WO2023232146A1 - Crossed optical waveguide light switch module - Google Patents

Crossed optical waveguide light switch module Download PDF

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Publication number
WO2023232146A1
WO2023232146A1 PCT/CN2023/098119 CN2023098119W WO2023232146A1 WO 2023232146 A1 WO2023232146 A1 WO 2023232146A1 CN 2023098119 W CN2023098119 W CN 2023098119W WO 2023232146 A1 WO2023232146 A1 WO 2023232146A1
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WO
WIPO (PCT)
Prior art keywords
light
optical
guide plate
light guide
optical waveguide
Prior art date
Application number
PCT/CN2023/098119
Other languages
French (fr)
Chinese (zh)
Inventor
陈�峰
Original Assignee
陈�峰
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 陈�峰 filed Critical 陈�峰
Publication of WO2023232146A1 publication Critical patent/WO2023232146A1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/968—Switches controlled by moving an element forming part of the switch using opto-electronic devices
    • H03K17/969—Switches controlled by moving an element forming part of the switch using opto-electronic devices having a plurality of control members, e.g. keyboard

Definitions

  • the present invention relates to optical switch modules, in particular to optical switch modules used in PC keyboards, notebook keyboards, etc., and to input devices that illuminate characters on keycaps, and in particular to optical switch keyboards mounted on input devices as electronic instruments.
  • each light area is equipped with a photosensitive tube, and 101 LEDs and 6 photosensitive tubes (a total of 107 transmitting and receiving components) can be used to detect 101 The triggering state of a keycap.
  • the large size of the PCB board causes the cost of the keyboard to remain high.
  • the market price of the PCB board is 250 yuan/m 2 (simple circuit and few electronic components) - 300 yuan/m 2 (complex circuit and many electronic components), 101
  • the area of the PCB board of the mechanical keyboard is 435mm*130mm, and its cost is 14 yuan/piece to 18 yuan/piece;
  • PCB board is about 18 yuan/piece
  • the price of 104 LEDs is 6.24 yuan (the market price of LED is 0.06 yuan/piece)
  • the total of the two items is 24.24 yuan (not counting the cost of purchasing 104 resistors, not counting (including installation process costs).
  • the object of the present invention is to provide an optical switch module with greatly reduced cost, especially an optical switch module used in PC keyboards, notebook keyboards, etc.
  • a cross optical waveguide optical switch module includes an optical transmitter, an optical receiver, a circuit chip, a light guide plate, and an optical switch.
  • the optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch.
  • the optical switch When the optical switch When triggered, the light path between the light transmitter and the light receiver is switched on and off; the light guide plate is composed of I light guide plate 6 and II light guide plate 7, in which the II light guide plate 7 is composed of multiple II light waveguides, and the I light guide plate 6 is composed of It consists of multiple I optical waveguides; the angle between the II optical waveguides and the I optical waveguides arranged in rows is &; an optical switch is arranged at the intersection of the II optical waveguide and the I optical waveguide, and the optical switches are arranged in rows.
  • the I light guide plate 6 is a Y light guide plate 11, the I light waveguide is a Y-direction light waveguide 11-1, the II light guide plate 7 is an X-direction light guide plate 12, and the II light waveguide is an X-direction light waveguide 12-1; light emission
  • the detector and optical receiver are arranged on the circuit chip.
  • the circuit chip is composed of Y-PCBA13 and X-PCBA10.
  • the length of X-PCBA10 is arranged along the length direction of the light guide plate, and the length of Y-PCBA13 is arranged along the width direction of the light guide plate;
  • X-PCBA10 is a light-receiving PCBA
  • the light receiver is on X-PCBA10
  • Y-PCBA13 is a light-emitting PCBA
  • the light emitter is on Y-PCBA13 or
  • X-PCBA10 is a light-emitting PCBA
  • the light emitter is on X-PCBA10
  • Y-PCBA13 is a light receiving PCBA
  • the light receiver is located on Y-PCBA13.
  • optical transmitter includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch.
  • the optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch.
  • the optical switch is triggered, the optical transmitter and the optical switch are connected.
  • the light path of the light receiver is switched on and off; the light guide plate is provided with multiple optical waveguides, and the optical waveguide is provided with multiple blocking through holes and multiple light conversion windows that penetrate the board surface; the light guide plate is composed of I light guide plate 6 and II
  • the optical waveguide of the I light guide plate 6 is composed of multiple X-direction optical waveguides 12-1, and the optical waveguide of the II light guide plate 7 is composed of multiple Y-direction optical waveguides 11-1;
  • the X-direction optical waveguide 12 -1 are arranged in rows, the angle between the Y-direction optical waveguide 11-1 and the X-direction optical waveguide 12-1 is &;
  • the light conversion window is located in the blocking through hole, and the blocking through hole and the X-direction optical waveguide 12-1, Y
  • the optical path of the directional optical waveguide 11-1 is conducted; the optical switches are arranged in rows, and the blocking through holes are arranged in rows. At most one blocking through hole is provided at the intersection of the X
  • the optical transmitter includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch.
  • the optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch.
  • the optical switch is triggered, the optical transmitter and the optical switch are connected.
  • the optical path of the light receiver is switched on and off; the light guide plate is composed of I light guide plate 6 and II light guide plate 7.
  • I light guide plate 6 is composed of multiple X-direction optical waveguides 12-1, and II light guide plate 7 is composed of multiple Y-direction optical waveguides.
  • the optical switches are arranged in rows, and at most one optical switch is provided at the intersection of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1; the X-direction optical waveguides 12-1 are arranged in rows, and the Y-direction optical waveguide 11-1 The angle between the X-direction optical waveguide 12-1 and the The optical path with the X-direction optical waveguide 12-1 or the optical path with the Y-direction optical waveguide 11-1 is blocked.
  • the circuit chip is composed of Y-PCBA13 and X-PCBA10, wherein the length of X-PCBA10 is arranged along the length direction of the light guide plate, and the length of Y-PCBA13 is arranged along the width direction of the light guide plate; the light receiver is aligned with the X-direction
  • the optical path of the optical waveguide 12-1 is connected, and the optical transmitter and the Y-direction optical waveguide 11-1 are connected, or the optical receiver and the Y-direction optical waveguide 11-1 are connected, and the optical transmitter and the X-direction optical waveguide 12-1 are connected.
  • the optical path is connected; the optical receiver is set on X-PCBA10 and the optical transmitter is set on Y-PCBA13 or the optical receiver is set on Y-PCBA13 and the optical transmitter is set on X-PCBA10.
  • the light emitter is the side LED13-2
  • the light receiver is the photosensitive tube 10-2
  • the Y light guide plate 11 is located above the X light guide plate 12
  • the X-PCBA10 is the light receiving PCBA
  • the Y-PCBA13 is the light emitting PCBA.
  • Photosensitive tube 10-2 on the -1 optical path is turned on, and the light emitted by the side LED13-2 on the Y-PCBA13 is incident on the X-directional light waveguide 12-1.
  • the light emitter is the side LED13-2
  • the light receiver is the photosensitive tube 10-2
  • the Y light guide plate 11 is located above the X light guide plate 12
  • the X-PCBA10 is the light emitting PCBA
  • the Y-PCBA13 is the light receiving PCBA.
  • the light emitted by the side LED13-2 on the X-PCBA10 is incident on the end face of the Y-direction optical waveguide 11-1.
  • the photosensitive tube 10-2 on the Y-PCBA13 is located in the through hole of the X-direction optical waveguide 12-1.
  • the Y-PCBA13 is located on between the two ends of the X light guide plate 12 along the length direction.
  • the light receiver is a photosensitive tube 10-2
  • the X light guide plate 12 is located above the Y light guide plate 11
  • the Y-PCBA13 is a light receiving PCBA
  • the X-PCBA10 is a light emitting PCBA
  • the Y-PCBA13 is located along the X light guide plate 12
  • the photosensitive tube 10-2 on the Y-PCBA13 is located in the through hole between the two Y-direction optical waveguides 11-1.
  • the photosensitive tube 10-2 passes the light of the X-direction optical waveguide 12-1.
  • the incident window is connected to the optical path of the X-directional light waveguide 12-1.
  • the light emitter is the side LED13-2
  • the X light guide plate 12 is located above the Y light guide plate 11
  • the light emission PCBA is composed of 2 Y-PCBA13
  • the 2 Y-PCBA13 are respectively located on the X light guide plate 12 along the length direction.
  • the optical signal emitted by the side LED13-2 is incident on the X-ray waveguide 12-1; the X-ray guide plate 12 is divided into multiple X-ray waveguides 12-1 arranged along the positive X direction, and the side LED13-2 Located at both ends of the X-direction optical waveguide 12-1 respectively, the X-PCBA10 is a light-receiving PCBA, and the X-PCBA10 is located between the two ends of the Y light guide plate 11 along the width direction.
  • the light emitter is the side LED13-2
  • the light receiver is the photosensitive tube 10-2
  • the photosensitive tube 10-2 corresponds to the Y-direction optical waveguide 11-1
  • the side LED13-2 and the Y-direction optical waveguide 11 -1 corresponds to one-to-one.
  • the optical switch module also includes a circuit chip and a light transmitter.
  • the circuit chip is composed of a light receiving PCBA and a light transmitting PCBA.
  • the circuit chip is located under the X light guide plate 12 or Y light guide plate 11 and their combination.
  • the light transmitter is from The Y-direction optical waveguide 11-1 is incident on the end surface of the Y-direction optical waveguide 11-1.
  • the present invention provides an optical switch module with greatly reduced cost.
  • the present invention can reduce the area of the PCB board by about 85%-90%, and reduce the number of transmitting and receiving electronic components from a total of 107 to a total of 35 (the number of transmitting and receiving electronic components is reduced by approximately 70%);
  • PCB board is about 3.6 yuan
  • LED is about 1.87 yuan
  • the total material cost reduction of each keyboard is about 18.8 yuan/unit, which does not include the cost of reducing the pads when producing the PCB board after the LED is reduced, and does not include the LED
  • the cost of welding reduction Comparing the present invention with the existing technology: only two light guide plates (transparent plastic-PC sheets) are added and multiple PET films are added for the production of reflective films.
  • the cost calculation result is: considering the production of the keyboard of the present invention The cost is reduced by 14 yuan/piece to 18 yuan/piece (the cost advantage of the present invention is very obvious); the present invention can be widely used in PC keyboards, thin membrane keyboards, and thin notebook keyboards; thin membrane keyboards are widely used in medical equipment, Industrial control equipment, household appliances such as washing machines, microwave ovens, etc.
  • Figure 1 is a front view of a keyboard using the optical switch module 9 of the present invention.
  • Figure 2 is a partial enlarged view of Figure 1;
  • Figure 3 is a top perspective view of the blocking body 5 used in the optical switch
  • Figure 4 is a lower perspective view of the blocking body 5 used in the optical switch
  • Figure 5 is a perspective view of an optical switch module in which the light conversion window of a key unit adopts light guide points 7-1;
  • Figure 6 is a cross-sectional view of the keycap of Figure 2 in the upper extreme position
  • Figure 7 is a cross-sectional view of the keycap of Figure 2 being triggered and in the lower limit position
  • Figure 8 is a partial enlarged view of Figure 6;
  • Figure 9 is a partial enlarged view of Figure 7;
  • Figure 10 is a cross-sectional view of the keyboard using another light conversion window in Figure 2 when the keycap is in the highest position;
  • Figure 11 is a cross-sectional view of the keyboard using another light conversion window in Figure 2 with the keycap in the lowest position;
  • Figure 12 is a partial enlarged view of Figure 10;
  • Figure 13 is a partial enlarged view of Figure 11;
  • Figure 14 is a perspective view of an optical switch module using lens 7-2 for the optical conversion window of a key unit
  • Figure 15 is a perspective view of Figure 1;
  • Figure 16 is an exploded view of Figure 15;
  • Figure 17 is a perspective view of the optical switch module 9 used in the present invention.
  • Figure 18 is an exploded view of the optical switch module 9 used in the present invention.
  • Figure 19 is a partial enlarged view of the electronic circuit of Figure 18;
  • Figure 20 is a perspective view of the I light guide plate 6 used in the optical switch module 9 of the present invention.
  • Figure 21 is a perspective view of the II light guide plate 7 used in the optical switch module 9 of the present invention.
  • Figure 22 is a partial enlarged view of Figure 21;
  • Figure 23 is a front view of Figure 17;
  • Figure 24 is a perspective view of another structural optical switch module 9 adopted in the present invention.
  • Figure 25 is an exploded view of Figure 24;
  • Figure 26 is a partial enlarged view of the electronic circuit of Figure 25;
  • Figure 27 is a position diagram of the assembly structure of Figure 25;
  • Figure 28 is a partial enlarged view of Figure 26;
  • Figure 29 is an exploded view of another structural optical switch module 9 adopted in the present invention.
  • Figure 30 is a perspective view of Figure 29;
  • Figure 31 is a partial enlarged view of Figure 30;
  • Figure 32 is a perspective view of Figure 31 with the blocking body 5 and the reflective film 11-3 on the Y removed;
  • Figure 33 is a perspective view of Figure 32 with the Y light guide plate 11 removed;
  • Figure 34 is a perspective view of Figure 33 with the lower Y reflective film 11-4 removed;
  • Figure 35 is a perspective view of Figure 34 with the upper reflective film 12-3 removed;
  • Figure 36 is a perspective view of Figure 35 with the X light guide plate 12 and the X lower reflective film 12-4 removed;
  • Figure 37 is an exploded view of another structural optical switch module 9 adopted in the present invention.
  • Figure 38 is a perspective view of Figure 37;
  • Figure 39 is a partial enlarged view of Figure 38;
  • Figure 40 is a perspective view of Figure 39 with the blocking body 5 and the reflective film 12-3 on the X removed;
  • Figure 41 is a perspective view of Figure 40 with the X light guide plate 12 removed;
  • Figure 42 is a perspective view of Figure 41 with the X-lower reflective film 12-4 removed;
  • Figure 43 is a perspective view of Figure 42 with the reflective film 11-3 on Y removed;
  • Figure 44 is a perspective view of Figure 42 with the Y light guide plate 11 and the Y lower reflective film 11-4 removed;
  • Figure 45 is an exploded view of another structural optical switch module 9 adopted in the present invention.
  • the circuit chip is composed of a light receiving PCBA and a light emitting PCBA.
  • the circuit chip is located below the X light guide plate 12 or the Y light guide plate 11 and their combination; this technical solution: light receiving PCBA and light emitting PCBA PCBA electrical connection is more convenient, and the light-receiving PCBA and the light-emitting PCBA can even be welded together; (see Embodiment 1, Embodiment 2) avoids the need for the circuit chip to be made into a special shape to avoid interference with the blocking body 5; avoid Circuit chips need to be made differently, resulting in material waste.
  • Y-PCBA13 uses a double-sided PCB board.
  • the side LED13-2 or the photosensitive tube 10-2 is installed on the front side.
  • the MCU and its peripheral circuits can be installed on the back side, further reducing the number of PCB boards. area.
  • the optical transmitter is incident on the Y-direction optical waveguide 11-1 from the end face of the Y-direction optical waveguide 11-1. Only 6 optical receivers are needed. Since the signal received by the optical receiver is relatively small, Weak, an amplification circuit is required to amplify the signal before connecting to the MCU. If the technical solution in Figure 18 is adopted, 23 optical receivers are required, and accordingly 23 amplification circuits are required, resulting in an increase in the cost of the circuit chip.
  • Embodiment 1 As shown in Figures 1 to 9, Figure 1 and Figure 2, this embodiment uses a 104-key keyboard (using 104 optical switches) to describe the optical switch module of the present invention in detail, wherein, Figure 2 This is a partial enlarged view of Figure 1.
  • each optical switch in this embodiment uses an elastic blocking body 5.
  • the blocking body 5 in this embodiment is made of silicone rubber.
  • the blocking body 5 can also be stamped and formed from metal sheets.
  • the blocking body 5 is composed of a light guide blocking part 5-1, a blocking elastic arm 5-2, a blocking mounting surface 5-3, and a blocking light guide hole 5-4.
  • the light guide blocking part 5- The height direction of 1 is perpendicular to the blocking installation surface 5-3, and the blocking light guide hole 5-4 penetrates the light guide blocking portion 5-1 along the height direction of the light guide blocking portion 5-1 and is located in the light guide blocking portion At the middle position of 5-1, one end of the blocking elastic arm 5-2 is connected to the light guide blocking part 5-1, and the other end of the blocking elastic arm 5-2 is connected to the blocking installation surface 5-3 to form a ring. Elastic arm.
  • the optical switch module 9 used in this embodiment consists of a blocking body 5 (not shown in the figure), an I light guide plate 6 that can efficiently guide light, an II light guide plate 7 that can efficiently guide light, and a light-emitting PCBA (Fig. (not shown in the figure) and a light-receiving PCBA (not shown in the figure), in which the I light guide plate 6 is located above the II light guide plate 7, and a blocking through hole penetrating its surface is provided on the I light guide plate 6.
  • This embodiment adopts
  • the blocking through hole is composed of a window through hole 6-1, and a light conversion window is provided on the II light guide plate 7.
  • the light conversion window in this embodiment adopts the method of setting light guide mesh points 7-1 on the upper surface of the II light guide plate 7 (this embodiment uses N concave microlenses are hot-pressed on the light guide plate); the light guide dots 7-1 of the light guide plate can also be screen-printed on the light guide plate using light-guiding ink.
  • N concave microlenses are hot-pressed on the light guide plate.
  • the light conversion window is located on the light guide node 7-1, the light guide node 7-1 converts the light signal emitted mainly along the z direction into a light signal mainly transmitted along the xy plane; It should be ensured that: the light guide point 7-1 is located in the window through hole 6-1; it should be ensured that the side wall of the window through hole 6-1 is smooth and free of burrs.
  • Figure 6 is a cross-sectional view of a key with the keycap of Figure 2 in the upper limit position;
  • the key device of a key position as shown in Figure 6 consists of a keycap 1, a keyboard upper shell 2, a key sliding body 3, a compression spring 4, an optical
  • the switch module 9 and the keyboard lower shell 8 are composed of the key cap 1 and the key sliding body 3, which are in sliding fit with the keyboard upper shell 2.
  • the compression spring 4 presses the key sliding body 3 to the upper limit position ( At this time, the keycap 1 is at the highest position); the upper and lower sides of the light guide plate are respectively affixed with an upper reflective film (shown in the attached figure, but not numbered) and a lower reflective film (shown in the attached figure, but not numbered).
  • the optical signal transmitted in the II light guide plate 7 passes through the light guide points 7-1, the blocking light guide holes 5-4, the key sliding body contact pillar 3-1 and the character light path on the key cap 1; it should be ensured that : The optical signal propagated in the II light guide plate 7 is connected to the side wall optical path of the window through hole 6-1 through the light guide node 7-1, so that the optical signal propagated in the II light guide plate 7 is propagated in the I light guide plate 6.
  • the optical signal emitted by the light transmitter (not shown in the figure) is efficiently incident on the II light guide plate 7, and at the same time, the optical receiver (not shown in the figure) is connected to the optical path of the I light guide plate 6 ;
  • This embodiment uses: the I light guide plate 6 provided with the window through hole 6-1 is located above the II light guide plate 7, the optical signal emitted by the light transmitter (not shown in the figure) is incident on the II light guide plate 7, and at the same time, the light receiver (not shown in the figure) is connected to the optical path of the I light guide plate 6; due to the reversibility of light, it can also be used: the optical signal emitted by the light transmitter (not shown in the figure) is incident on the I light guide plate 6, and at the same time, the light receiver ( (not shown in the figure) is connected to the optical path of II light guide plate 7.
  • the key sliding body 3 overcomes the elastic force of the compression spring 4 and slides downward for a certain distance.
  • the key sliding body 3 continues to move downward, and the key sliding body 3-1 overcomes the elastic force of the compression spring 4. Block the elastic force of the elastic arm 5-2 and push the light guide blocking part 5-1 to move downward.
  • the key sliding body 3 moves downward to the lower limit position (at this time, the key cap 1 is at the lowest position ), the lower end of the light guide blocking part 5-1 is infinitely close to the upper surface of the II light guide plate 7, and the lower end of the light guide blocking part 5-1 covers the light guide mesh points 7-1 on the II light guide plate 7, blocking The optical path between the light guide node 7-1 and the side wall of the window through hole 6-1.
  • the optical signal emitted by the optical transmitter (not shown in the figure) is blocked, and the optical receiver (not shown in the figure) cannot receive it.
  • the light-guiding blocking part 5-1 together with the key sliding body 3 and the keycap 1 are reset upward to the upper limit position under the action of elastic force.
  • this technical solution uses a lens 7-2 on the upper surface of the II light guide plate 7.
  • the light conversion window is located on the arc surface of the lens 7-2.
  • the lens 7-2 is made of highly transparent materials, which is the most cost-effective during production.
  • the best solution is to add light-conducting powder to a highly transparent material to cause light to scatter when it passes through lens 7-2 (when light passes through lens 7-2, the whole body of lens 7-2 will be illuminated, that is, lens 7-2 will be able to emit light all around) ;
  • the optical path of lens 7-2 and window through hole 6-1 is connected; lens 7-2 converts the light signal mainly emitted along the z direction into mainly transmitted along the xy plane.
  • Lens 7-2 can be installed on the II light guide plate using a dispensing machine. 7 points of glue are formed.
  • the diameter of the lens 7-2 is smaller than the diameter of the blocking light guide hole 5-4, thereby ensuring that when the keycap 1 moves to the lower limit position, the lens 7-2 can be located in the hole of the blocking light guide hole 5-4. within the space formed.
  • the keyboard ( Figure 15 is a perspective view of Figure 1, using 104 optical switches) is composed of keycap 1, keyboard upper shell 2, and keyboard lower shell 8.
  • the optical switch module 9 is located between the keyboard upper shell 2 and the keyboard lower shell 8, and the keycap 1 corresponds to the optical switches on the optical switch module 9. After installation, the optical switch module 9 is enclosed in the keyboard. In the upper shell 2 and the keyboard lower shell 8.
  • the length direction of the optical switch module 9 coincides with the X coordinate
  • the width direction of the optical switch module 9 coincides with the Y coordinate
  • the thickness direction of the optical switch module 9 coincides with the Z coordinate
  • the positive X direction , the positive Y direction, and the positive Z direction coincide with the X coordinate, the Y coordinate, and the Z coordinate respectively;
  • the upper and lower sides of the I light guide plate 6 are respectively affixed with upper reflective films ( (not numbered in Figure 18) and a lower reflective film (not numbered in Figure 18).
  • the upper and lower sides of the II light guide plate 7 are respectively affixed with an upper reflective film (not numbered in Figure 18) and a lower reflective film (not shown in the figure). ), when the light guide plate is small or the LED uses an infrared chip (high light radiation), the light guide plate does not need to be attached with a reflective film.
  • This embodiment adopts the solution of attaching a reflective film to the light guide plate, but in order to simplify the drawings, Example 1 does not attach the reflective film to the light guide plate.
  • the optical switch module 9 is composed of the same number of blocking bodies 5 as the keycap 1, I light guide plate 6, II light guide plate 7, X-PCBA10, Y-PCBA13, among which, the I light guide plate 6 in this embodiment
  • the Y light guide plate 11 is used, and the II light guide plate 7 is used in this embodiment.
  • the X light guide plate 12 is used.
  • the optical switch is composed of a window through hole 6-1 located on the light guide plate, a light conversion window located on the light guide plate, a blocking body 5, a light emitter, and a light emitter;
  • I light guide plate 6 Located above the II light guide plate 7, the window through hole 6-1 is located on the I light guide plate 6, the light conversion window is located on the II light guide plate 7, the I light waveguide is composed of the Y light guide plate 11, and the II light waveguide is composed of the X light guide plate 12.
  • the X light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive X direction by X guide plate light shielding grooves 12-2 along the positive 11-2 is divided into multiple Y-direction optical waveguides 11-1 arranged along the Y direction; Y-direction optical waveguides 11-1 arranged along the Y direction: Y-direction optical waveguides 11-1 can be arranged along the positive Y direction, The waveguide 11-1 can also be arranged at a certain angle with the positive Y direction (adopted in this embodiment); the optical switch consists of a window through hole 6-1 located on the light guide plate, a light conversion window located on the light guide plate, and a blocking Body 5 is composed of a light emitter that is connected to the light path of the light guide plate and a light emitter that is connected to the light path of the light guide plate; an optical switch is provided at the intersection of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1. Arrange in rows
  • the X light guide plate 12 is divided into multiple X-direction optical waveguides 12-1 arranged along the positive X direction, and the Y light guide plate 11 is divided into multiple Y-direction optical waveguides 11-1 arranged along the Y direction; the blocking through hole is The window through hole 6-1 is formed, and the light conversion window is located on the light guide node 7-1; this embodiment adopts: when the keyboard has a 104-key key position, the Y light guide plate 11 is divided into 23 Y-direction light waveguides 11-1; When the keyboard has 87 keys (not shown in the figure), the Y light guide plate 11 is divided into 13 Y-direction light waveguides 11-1; the X light guide plate 12 is divided into 6 X-direction light waveguides 12-1, arranged in rows.
  • the X-direction optical waveguide 12-1 is arranged along the positive X direction.
  • the light emitter is a side LED13-2 that emits side light
  • the side LED13-2 has 2 LED chips, one of which is a color LED chip and the other is an infrared LED chip
  • the light receiver is a photosensitive tube 10-2, which is an infrared photosensitive tube.
  • the infrared LED chip of the side LED 13-2 emits infrared light and is connected to the light path of the infrared photosensitive tube 10-2; the color light of the side LED 13-2 The light emitted by the LED chip is connected to the character optical path on the keycap.
  • an X-guide plate emission hole 12-3 is provided that penetrates the plate surface of the X-direction optical waveguide 12-1.
  • This embodiment adopts: along the X-direction optical waveguide 12
  • An X guide plate emission hole 12-3 is provided near the middle between the two end faces in the length direction of -1 and runs through the board surface.
  • the side LED13-2 is located in the X guide plate emission hole 12-3. The light signal emitted by the side LED13-2 , respectively incident on the X-directional light waveguide 12-1 on the left and the X-directional light waveguide 12-1 on the right.
  • the two side LEDs 13-2 are respectively located at both ends along the length direction of the Phototropic waveguide 12-1.
  • this embodiment uses: Y light guide plate 11 is located above the X light guide plate 12, X-PCBA 10 and blocking body 5 are located above the Y light guide plate 11, Y-PCBA 13 is located below the X light guide plate 12; long
  • the strip-shaped X guide plate light isolating grooves 12-2 are through holes that penetrate the X light guide plate 12.
  • the five X guide plate light isolating grooves 12-2 along the positive X direction divide the X light guide plate 12 into six X-direction light waveguides 12. -1.
  • Each X-direction optical waveguide 12-1 is provided with an X-guide plate emission hole 12-3 penetrating its plate near the middle along the X-direction, and the X-direction optical waveguides 12-1 are arranged in rows.
  • the photosensitive tube 10-2 corresponds to the Y-direction optical waveguide 11-1 one by one; it should be ensured that: the optical paths of each X-direction optical waveguide 12-1 of the X-direction light guide plate 12 are isolated from each other to prevent each optical path from leaking light from each other;
  • the light plate 11 is provided with 23 Y-direction optical waveguides 11-1.
  • the included angle between the Y-direction optical waveguide 11-1 and the X-direction optical waveguides 12-1 arranged in rows is &, and the included angle & is 30 degrees to 90 degrees, but The included angle & is 50 degrees to 90 degrees; it should be ensured that: the optical paths of each Y-direction optical waveguide 11-1 of the Y-light guide plate 11 are isolated from each other to prevent each optical path from leaking light from each other; it should be ensured that: the X-direction optical waveguide 12- The number of rows of 1's is equal to the number of rows of optical switches.
  • each Y-direction optical waveguide 11-1 are isolated from each other to prevent light leakage from each other; in this embodiment, a long Y-guide plate light isolation groove 11-2 is used to divide the Y-light guide plate 11 into 23 Y-paths Light-oriented waveguide 11-1; the light receiver adopts a photosensitive tube 10-2 for light detection.
  • the light-receiving PCBA of this embodiment is composed of X-PCBA10, and the X-PCBA10 is composed of a long X-PCB board 10-1 , photosensitive tube 10-2 and its peripheral circuits and peripheral components (not shown in the figure), wherein the photosensitive tube 10-2 and peripheral electronic components are welded on the X-PCB board 10-1, and the peripheral circuit is located on the X-PCB On the board 10-1, the photosensitive tube 10-2 and peripheral electronic components (not shown in the figure) are welded on the X-PCB board 10-1, and the peripheral circuit X-PCB board 10-1 is located on the X-PCB board 10 -1 is arranged along the positive X direction, and the X-PCBA 10 is located above the Y light guide plate 11, and its length is similar to and slightly smaller than the size of the Y light guide plate 11 along the
  • a set of light receivers is composed of at least one photosensitive tube 10-2.
  • the photosensitive tube 10-2 is located near the middle between the two end faces in the width direction of the Y-direction optical waveguide 11-1, and the length direction of the X-PCB board 10-1 is arranged along the positive X direction; it should be ensured that: the photosensitive tube 10 -2 is located in the Y through hole near the middle between the two end faces in the width direction of the Y-direction optical waveguide 11-1; it should be ensured that: the photosensitive tube 10-2 is connected to the optical path of the Y-direction optical waveguide 11-1 through the Y-direction optical waveguide 11-1 ; It should be ensured that: the number of Y-direction optical waveguides 11-1 is equal to the number of photosensitive tubes 10-2;
  • a light guide point can also be provided near the middle between the two end faces of the Y-direction optical waveguide 11-1, and the photosensitive tube 10-2 can also be connected to the optical path of the Y-direction optical waveguide 11-1 through the light guide point.
  • the light-emitting PCBA is composed of Y-PCBA13, and Y-PCBA13 is composed of Y-PCB board 13-1, light emitter, peripheral circuit and peripheral electronic components (not shown in the figure); the light emitter of this embodiment adopts LED light source.
  • side-emitting side LEDs 13-2 Two back-to-back side-emitting side LEDs 13-2 are located in the X-guide plate emission hole 12-3 on the X-light guide plate 12 (II light guide plate 7).
  • Y-PCBA13 Located below the X light guide plate 12; the length of the Y-PCBA 13 is arranged along the Y direction, and the PCB board 13-1 is arranged along the Y direction.
  • the light-receiving PCBA can also be composed of Y-PCBA13.
  • Y-PCBA13 is composed of Y-PCB board 13-1, light transmitter, peripheral circuits and peripheral electronic components (not shown in the figure);
  • the light-emitting PCBA is composed of X-PCBA10 is composed of a long X-PCB board 10-1, a photosensitive tube 10-2 and its peripheral circuits and peripheral components (not shown in the figure).
  • the cross optical waveguide optical switch module includes an optical transmitter, an optical receiver, a circuit chip, a light guide plate, and an optical switch.
  • the optical signal emitted by the optical transmitter is guided through the optical switch and the optical path of the optical receiver.
  • the light guide plate is composed of I light guide plate 6 and II light guide plate 7, where II light guide plate 7 is composed of multiple II light waveguides.
  • the I light guide plate 6 is composed of multiple I optical waveguides; the angle between the II optical waveguides and the I optical waveguides arranged in rows is &; an optical switch is provided at the intersection of the II optical waveguide and the I optical waveguide, and the optical switches are arranged in rows.
  • the I light guide plate 6 is a Y light guide plate 11, the I optical waveguide is a Y-direction optical waveguide 11-1, the II light guide plate 7 is an X-direction light guide plate 12, and the II optical waveguide is an X-direction optical waveguide 12-1;
  • the circuit chip is made of Y-PCBA13 ,
  • X-PCBA10 is composed of, among which, the length of X-PCBA10 is arranged along the length direction of the light guide plate, and the length of Y-PCBA13 is arranged along the width direction of the light guide plate;
  • Y-PCBA13 is a light-emitting PCBA, the light emitter is located on Y-PCBA13 or X-PCBA10 is a light-emitting PCBA, the light emitter is on X-PCBA10, Y-PCBA13 is a light-receiving PCBA, the light receiver is located on Y-PCBA13 superior.
  • optical transmitter includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch.
  • the optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch.
  • the optical switch is triggered, the optical transmitter and the optical switch are connected.
  • the light path of the light receiver is switched on and off; the light guide plate is provided with multiple optical waveguides, and the optical waveguide is provided with multiple blocking through holes and multiple light conversion windows that penetrate the board surface; the light guide plate is composed of I light guide plate 6 and II
  • the optical waveguide of the I light guide plate 6 is composed of multiple X-direction optical waveguides 12-1, and the optical waveguide of the II light guide plate 7 is composed of multiple Y-direction optical waveguides 11-1;
  • the X-direction optical waveguide 12 -1 are arranged in rows, the angle between the Y-direction optical waveguide 11-1 and the X-direction optical waveguide 12-1 is &;
  • the light conversion window is located in the blocking through hole, and the blocking through hole and the X-direction optical waveguide 12-1, Y
  • the optical path of the directional optical waveguide 11-1 is conducted; the optical switches are arranged in rows, and the blocking through holes are arranged in rows. At most one blocking through hole is provided at the intersection of the X
  • the optical transmitter includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch.
  • the optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch.
  • the optical switch is triggered, the optical transmitter and the optical switch are connected.
  • the optical path of the light receiver is switched on and off; the light guide plate is composed of I light guide plate 6 and II light guide plate 7.
  • I light guide plate 6 is composed of multiple X-direction optical waveguides 12-1, and II light guide plate 7 is composed of multiple Y-direction optical waveguides.
  • the optical switches are arranged in rows, and at most one optical switch is provided at the intersection of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1; the X-direction optical waveguides 12-1 are arranged in rows, and the Y-direction optical waveguide 11-1 The angle between the X-direction optical waveguide 12-1 and the The optical paths of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1 are blocked.
  • the present invention provides an optical switch module with greatly reduced cost.
  • the present invention can reduce the area of the PCB board by about 85%-90% and the number of transmitting and receiving electronic components by about 70%).
  • Scanning detection method of cross optical waveguide optical switch module See Figure 23, MCU (not shown in the figure) in order to improve the scanning speed of the optical switch module, the present invention adopts the frequency scanning method, so that the coordinates are Y1, Y2, Y3 ...
  • the six LED13-2 at Y6 respectively emit light signals of different frequencies (the frequencies are f1, f2, f3,...f6 respectively), and the coordinates are Y1, Y2, Y3...
  • the frequencies of the optical signals propagated in the 6-channel X-direction optical waveguide 12-1 of Y6 are f1, f2, f3,...f6 respectively;
  • the MCU (not shown in the figure) scans the 23 photosensitive tubes one by one The input signal of 10-2; when the optical switch is not triggered, the 19 photosensitive tubes 10-2 with coordinates X1, X2, X3...X19 all receive 6 types of f1, f2, f2,. . . f6 different frequency optical signals; the four photosensitive tubes 10-2 with coordinates X20, X21...X23 all receive 5 different frequencies of f2, f3,...f6 light signal;
  • the photosensitive tube 10-2 at coordinates X3 will not receive the optical signal with frequency f5.
  • the photosensitive tube 10-2 at coordinates It receives optical signals with frequencies f1, f2, f3, f4, and f6, thereby determining that the optical switch at the coordinates
  • the -2 coordinate determines the optical switch state of the column (Y direction).
  • Embodiment 2 As shown in Figure 24 to Figure 28, this embodiment: the upper and lower sides of the light guide plate are not affixed with upper and lower reflective films.
  • This embodiment uses: X light guide plate 12 is located above the Y light guide plate 11, Y-PCBA 13 and blocking The body 5 is located above the X light guide plate 12, and the 7, the I optical waveguide is composed of the X light guide plate 12, and the II optical waveguide is composed of the Y light guide plate 11.
  • the X light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive X direction.
  • the Y light guide plate 11 is divided into multiple Y-direction light waveguides 11-1.
  • the photosensitive tube 10-2 connected with its light path; the side LED 13-2 is located at one end of the Y-direction optical waveguide 11-1.
  • the light-emitting PCBA is composed of X-PCBA10.
  • the light receiving PCBA is composed of Y-PCBA13
  • Y-PCBA13 is composed of Y-PCB board 13-1, photosensitive tube 10-2, peripheral circuits and peripheral electronic components (not shown in the figure).
  • a lens 7-2 is provided on the surface of the Y-direction optical waveguide 11-1, and the light conversion window is located on the lens 7-2.
  • the light receiving PCBA can also be composed of X-PCBA10.
  • X-PCBA10 consists of a long X-PCB board 10-1, a photosensitive tube 10-2 and its peripheral circuits. and peripheral electronic components (not shown in the figure);
  • the light-emitting PCBA can also be composed of Y-PCBA13, which is composed of Y-PCB board 13-1, side LED13-2 and its peripheral circuits and peripheral electronic components (not shown in the figure) means) composition.
  • Embodiment 3 As shown in Figure 29 to Figure 31, the Y light guide plate 11 is located above the X light guide plate 12, X-PCBA10 and Y-PCBA13 are both located below the light guide plate, and the upper and lower surfaces of the X light guide plate 12 are respectively affixed with X upper reflective films. 12-3, X lower reflective film 12-4, Y upper reflective film 11-3 and Y lower reflective film 11-4 are respectively attached to the upper and lower surfaces of the Y light guide plate 11, X-PCBA10 is a light receiving PCBA, and Y-PCBA13 is Light emitting PCBA.
  • the window through hole 6-1 (blocking through hole) is located on the Y light guide plate 11
  • the light conversion window (lens 7-2 is used in this embodiment) is located on the X light guide plate 12
  • the lens 7- 2 is located in the window through hole 6-1, and the light conversion window is located on the outer surface of the lens 7-2.
  • the Y light guide plate 11 is divided into multiple Y-direction optical waveguides 11-1 arranged along the Y direction by the Y guide plate light-isolating grooves 11-2 along the Y direction.
  • the X light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive X direction by the X guide plate light isolation groove 12-2.
  • the photosensitive tube 10-2 on the X-PCBA10 is located in the through hole between the two X-direction optical waveguides 12-1.
  • the through hole is composed of the X guide plate light isolation groove 12-2 and the rough surface through hole (not shown in the figure);
  • the through hole between the two X-directional light waveguides 12-1 is the X guide plate light isolation groove 12-2, and the X guide plate
  • the light isolation groove 12-2 separates the X light guide plate 12 into multiple X-directional light waveguides 12-1.
  • the photosensitive tube 10-2 is located in the X guide plate light isolation groove 12-2; it can also be used on the X light guide plate 12, along the The rough surface is hot-pressed in the (not shown in));
  • the photosensitive tube 10-2 (the upper surface of the photosensitive tube 10-2) is located near the bottom of the lower plate surface of the Y-direction optical waveguide 11-1 or the photosensitive tube 10-2 is located in the through hole on the Y-direction optical waveguide 11-1.
  • the incident window is set on the lower plate surface of the Y-direction optical waveguide 11-1 or in the through hole of the Y-direction optical waveguide 11-1.
  • the photosensitive tube 10-2 passes through the light incident window on the lower plate surface of the Y-direction optical waveguide 11-1.
  • the light incident window is used in this embodiment to heat-form N concave microlenses on the lower surface of the Y-direction optical waveguide 11-1 (it can also be used in the Y-direction optical waveguide 11-1)
  • Silk-printed light guide ink on the lower surface of the light waveguide 11-1 the photosensitive tube 10-2 corresponds to the Y-directional light waveguide 11-1
  • the photosensitive tube 10-2 corresponds to the light incident window
  • the The light emitted by the side LED 13-2 is incident on the X-directional light waveguide 12-1.
  • X-PCBA10 is a light-emitting PCBA
  • Y-PCBA13 is a light-receiving PCBA
  • the side LED13-2 is located on the X-PCBA10
  • the side LED13-2 on the X-PCBA10 emits Light is incident on the end face of the Y-direction optical waveguide 11-1 (the positional relationship between the side LED13-2 and the Y-direction optical waveguide 11-1 can be seen in Figure 25- Figure 26);
  • the photosensitive tube 10-2 is located on the Y-PCBA13
  • Y -The photosensitive tube 10-2 on the PCBA13 is located in the through hole of the X-ray waveguide 12-1 (not shown in the figure), so that the photosensitive tube 10-2 is connected to the optical path of the X-ray waveguide 12-1, and a
  • the Y-PCBA 13 of the photosensitive tube 10-23 is located between the two ends of the X light guide plate 12 along the length direction.
  • Embodiment 4 As shown in Figures 37 to 44 , the X light guide plate 12 is located above the Y light guide plate 11, X-PCBA10 and Y-PCBA13 are both located below the light guide plate, Y-PCBA13 is a light-receiving PCBA, and X-PCBA10 is a light-emitting PCBA. , the Y-PCBA 13 is located between the two ends along the length direction of the X light guide plate 12 . In this embodiment, the Y-PCBA 13 is located near the middle between the two ends along the length direction of the X light guide plate 12 .
  • the photosensitive tube 10-2 on the Y-PCBA13 is located in the through hole between the two Y-direction optical waveguides 11-1, and the through-hole between the two Y-direction optical waveguides 11-1 is Y
  • the light-isolating groove 11-2 of the guide plate and the photosensitive tube 10-2 are located in the light-isolating groove 11-2 of the Y guide plate.
  • the rough surface hot-pressed along the Y direction on the Y light guide plate 11 can also be used. This rough surface will form the Y light guide plate 11.
  • the photosensitive tube 10-2 is located in the rough surface through hole (not shown in the figure);
  • the photosensitive tube 10- on the Y-PCBA13 2 are respectively located in the two Y-guide plate light-isolating grooves 11-2 (used in this embodiment);
  • the photosensitive tube 10-2 is located below the lower plate surface of the X-direction light waveguide 12-1, or the photosensitive tube 10-2 is located in the through hole on the X-direction light waveguide 12-1, and the light incident window is set on the X-direction light waveguide 12-1.
  • the lower plate surface of 1 may be arranged in the through hole of the X-direction optical waveguide 12-1.
  • the photosensitive tube 10-2 passes through the light incident window (not shown in the figure) on the lower plate surface of the X-direction optical waveguide 12-1, and is in contact with the X-direction optical waveguide 12-1.
  • the optical path of the optical waveguide 12-1 is connected, and the light incident window is used.
  • N concave microlenses are formed by hot pressing on the lower surface of the X-directional optical waveguide 12-1 (it can also be used on the lower surface of the X-directional optical waveguide 12-1 Silk screen light guide ink), the side LED 13-2 corresponds to the end face of the Y-direction optical waveguide 11-1 one by one.
  • Embodiment 5 As shown in Figure 45 , the X light guide plate 12 is located above the Y light guide plate 11. Along the two ends of the X-ray guide plate 12 in the length direction and located below the X-ray guide plate 12, the optical signals emitted by the side LEDs 13-2 are incident inwardly into the X-ray waveguide 12-1 from the end faces of the X-ray waveguide 12-1.
  • the X light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive
  • the PCBA 10 is a light receiving PCBA, and the X-PCBA 10 is located near the middle between the two ends of the Y light guide plate 11 along the width direction.
  • the invention can be widely used in PC keyboards, thin membrane keyboards, and thin notebook keyboards; thin membrane keyboards are widely used in medical equipment, industrial control equipment, and the like.

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  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

A crossed optical waveguide light switch module, comprising a light emitter, a light receiver, a circuit wafer, a light guide plate, and light switches, wherein a light signal emitted by the light emitter is connected to an optical path of the light receiver by means of the light switches, and when the light switches are triggered, the optical path of the light emitter and the light receiver is switched on or off; the light guide plate is composed of a first light guide plate (6) and a second light guide plate (7), wherein the second light guide plate (7) is composed of a plurality of second light waveguides, and the first light guide plate (6) is composed of a plurality of first light waveguides; an included angle between the second light waveguides arranged in a row and the first light waveguides arranged in a row is &; and one light switch is arranged at an intersection between each of the second light waveguide and each of the first light waveguide, and the light switches are arranged in a row. The present invention has an obvious cost advantage, and can be widely applied to PC keyboards, thin film keyboards, and thin notebook keyboards. The thin film keyboards are widely used in medical devices, industrial control devices, household appliances such as washing machines, microwave ovens, etc.

Description

一种交叉光波导光开关模块A cross optical waveguide optical switch module
优先权声明：本发明的权利要求3、权利要求4分别要求申请日为2022-06-03，申请号为2022106238925的权利要求2、权利要求3及其相应实施例的优先权。Priority statement: Claims 3 and 4 of the present invention respectively claim priority over claims 2, 3 and their corresponding embodiments with the filing date of 2022-06-03 and the application number 2022106238925.
技术领域Technical field
本发明涉及光开关模块，特别是应用于PC键盘、笔记本键盘等的光开关模块，同时涉及使键帽的字符发光的输入装置，特别涉及装载在作为电子仪器的输入装置的光开关键盘。The present invention relates to optical switch modules, in particular to optical switch modules used in PC keyboards, notebook keyboards, etc., and to input devices that illuminate characters on keycaps, and in particular to optical switch keyboards mounted on input devices as electronic instruments.
背景技术Background technique
参见专利申请号为CN2020800786431，发明名称为一种导光板光开关及导光板阵列光开关模块的技术方案；该技术方案的导光板阵列光开关模块应用于键盘，以101个键位的键盘为例，该技术方案采用了101个LED及6个光敏管（导光板分为6个光区），其导光板与PCB板的尺寸相近并略小于键盘尺寸；及6个光敏管均被焊接在PCB板，其中101个LED的位置与101个键帽一一对应。该技术方案的最大优点是：通过将导光板分为6个光区，每个光区设置1个光敏管，采用101个LED及6个光敏管(发射接收组件总计107个)就能检测101个键帽的触发状态。See the patent application number CN2020800786431, and the name of the invention is a technical solution for a light guide plate optical switch and a light guide plate array optical switch module; the light guide plate array optical switch module of this technical solution is applied to a keyboard, taking a keyboard with 101 key positions as an example , this technical solution uses 101 LEDs and 6 photosensitive tubes (the light guide plate is divided into 6 light zones). The size of the light guide plate and the PCB board are similar and slightly smaller than the keyboard size; and the 6 photosensitive tubes are welded to the PCB board, in which the positions of 101 LEDs correspond to 101 keycaps. The biggest advantage of this technical solution is that by dividing the light guide plate into 6 light areas, each light area is equipped with a photosensitive tube, and 101 LEDs and 6 photosensitive tubes (a total of 107 transmitting and receiving components) can be used to detect 101 The triggering state of a keycap.
技术问题technical problem
现有技术方案的最大缺点是：The biggest shortcomings of existing technical solutions are:
1. PCB板的尺寸大导致键盘成本的居高不下，PCB板的市场价为250元/m 2（电路简单且电子元件少）-300元/m 2（电路复杂且电子元件多），101键的机械键盘的PCB板的面积为435mm*130mm，其成本为14元/个-18元/个； 1. The large size of the PCB board causes the cost of the keyboard to remain high. The market price of the PCB board is 250 yuan/m 2 (simple circuit and few electronic components) - 300 yuan/m 2 (complex circuit and many electronic components), 101 The area of the PCB board of the mechanical keyboard is 435mm*130mm, and its cost is 14 yuan/piece to 18 yuan/piece;
2. 增加了购买101个LED成本及增加了购买101个LED的***电路元件成本；2. Increased cost of purchasing 101 LEDs and increased cost of peripheral circuit components of purchasing 101 LEDs;
3. 电子元件越多，PCB板的电路走线越复杂，PCB板电路越复杂使PCB板制造成本升高；3. The more electronic components there are, the more complex the circuit routing of the PCB board will be, and the more complex the PCB board circuit will be, the higher the manufacturing cost of the PCB board will be;
4. PCB板制造时焊盘越多其成本越高，101个LED、101个电阻（***电路元件）合计增加404个PCB上的焊盘；4. The more pads on the PCB board, the higher the cost. 101 LEDs and 101 resistors (peripheral circuit components) add a total of 404 pads on the PCB;
5.安装101个LED及101个电阻时，合计增加404焊点的焊接工艺；5. When installing 101 LEDs and 101 resistors, a total of 404 solder points will be added to the welding process;
6.大幅降低了键帽可靠性：键帽使用的电子元件越多，可能的故障点就越多。6. Significantly reduces keycap reliability: The more electronic components a keycap uses, the more possible failure points there are.
现有技术方案的生产成本测算： PCB板约18元/个，104个LED的价格为6.24元（LED市价为0.06元/个），两项总计24.24元（未计购买104个电阻成本，未计安装工艺成本）。The production cost calculation of the existing technical solution: PCB board is about 18 yuan/piece, the price of 104 LEDs is 6.24 yuan (the market price of LED is 0.06 yuan/piece), the total of the two items is 24.24 yuan (not counting the cost of purchasing 104 resistors, not counting (including installation process costs).
技术解决方案Technical solutions
本发明的目的在于：提供一种成本大幅降低的光开关模块，特别是应用于PC键盘、笔记本键盘等的光开关模块。The object of the present invention is to provide an optical switch module with greatly reduced cost, especially an optical switch module used in PC keyboards, notebook keyboards, etc.
 一种交叉光波导光开关模块，包括光发射器、光接收器、电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断； 导光板由Ⅰ导光板6、Ⅱ导光板7构成，其中，Ⅱ导光板7由多路Ⅱ光波导构成，Ⅰ导光板6由多路Ⅰ光波导构成；成行排列的Ⅱ光波导与Ⅰ光波导的夹角为&；Ⅱ光波导、Ⅰ光波导交汇处设置一个光开关，光开关成行排列。A cross optical waveguide optical switch module includes an optical transmitter, an optical receiver, a circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch. When the optical switch When triggered, the light path between the light transmitter and the light receiver is switched on and off; the light guide plate is composed of I light guide plate 6 and II light guide plate 7, in which the II light guide plate 7 is composed of multiple II light waveguides, and the I light guide plate 6 is composed of It consists of multiple I optical waveguides; the angle between the II optical waveguides and the I optical waveguides arranged in rows is &; an optical switch is arranged at the intersection of the II optical waveguide and the I optical waveguide, and the optical switches are arranged in rows.
进一步的是：Ⅰ导光板6为Y导光板11，Ⅰ光波导为Y向光波导11-1，Ⅱ导光板7为X导光板12，Ⅱ光波导为X向光波导12-1；光发射器、光接收器设置在电路片上，电路片由Y-PCBA13、X-PCBA10构成，其中，X-PCBA10的长度沿导光板的长度方向布置，Y-PCBA13的长度沿导光板的宽度方向布置；X-PCBA10为光接收PCBA，光接收器于X-PCBA10上，Y-PCBA13为光发射PCBA，光发射器位于Y-PCBA13上或X-PCBA10为光发射PCBA，光发射器于X-PCBA10上，Y-PCBA13为光接收PCBA，光接收器位于Y-PCBA13上。Further, the I light guide plate 6 is a Y light guide plate 11, the I light waveguide is a Y-direction light waveguide 11-1, the II light guide plate 7 is an X-direction light guide plate 12, and the II light waveguide is an X-direction light waveguide 12-1; light emission The detector and optical receiver are arranged on the circuit chip. The circuit chip is composed of Y-PCBA13 and X-PCBA10. The length of X-PCBA10 is arranged along the length direction of the light guide plate, and the length of Y-PCBA13 is arranged along the width direction of the light guide plate; X-PCBA10 is a light-receiving PCBA, the light receiver is on X-PCBA10, Y-PCBA13 is a light-emitting PCBA, the light emitter is on Y-PCBA13 or X-PCBA10 is a light-emitting PCBA, and the light emitter is on X-PCBA10 , Y-PCBA13 is a light receiving PCBA, and the light receiver is located on Y-PCBA13.
包括光发射器、光接收器、电子电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断；导光板设置有多路光波导，光波导上设置有贯穿其板面的多个阻断贯穿孔、多个光转换窗口；导光板由Ⅰ导光板6、Ⅱ导光板7构成，其中，Ⅰ导光板6的光波导由多路X向光波导12-1构成，Ⅱ导光板7的光波导由多路Y向光波导11-1构成；X向光波导12-1成行排列，Y向光波导11-1与X向光波导12-1的夹角为&；光转换窗口位于阻断贯穿孔内，阻断贯穿孔与X向光波导12-1、Y向光波导11-1光路导通；光开关成行排列，阻断贯穿孔成行排列，X向光波导12-1与Y向光波导11-1交汇处设置最多一个阻断贯穿孔。It includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch. When the optical switch is triggered, the optical transmitter and the optical switch are connected. The light path of the light receiver is switched on and off; the light guide plate is provided with multiple optical waveguides, and the optical waveguide is provided with multiple blocking through holes and multiple light conversion windows that penetrate the board surface; the light guide plate is composed of I light guide plate 6 and II The optical waveguide of the I light guide plate 6 is composed of multiple X-direction optical waveguides 12-1, and the optical waveguide of the II light guide plate 7 is composed of multiple Y-direction optical waveguides 11-1; the X-direction optical waveguide 12 -1 are arranged in rows, the angle between the Y-direction optical waveguide 11-1 and the X-direction optical waveguide 12-1 is &; the light conversion window is located in the blocking through hole, and the blocking through hole and the X-direction optical waveguide 12-1, Y The optical path of the directional optical waveguide 11-1 is conducted; the optical switches are arranged in rows, and the blocking through holes are arranged in rows. At most one blocking through hole is provided at the intersection of the X-directional optical waveguide 12-1 and the Y-directional optical waveguide 11-1.
包括光发射器、光接收器、电子电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断；导光板由Ⅰ导光板6、Ⅱ导光板7构成，Ⅰ导光板6由多路X向光波导12-1构成，Ⅱ导光板7由多路Y向光波导11-1构成；光开关成行排列，X向光波导12-1与Y向光波导11-1交汇处设置最多一个光开关；X向光波导12-1成行排列，Y向光波导11-1与X向光波导12-1的夹角为&；光开关的光转换窗口使X向光波导12-1、Y向光波导11-1光路导通；当光开关被触发时，光转换窗口与X向光波导12-1的光路或Y向光波导11-1的光路被阻隔。It includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch. When the optical switch is triggered, the optical transmitter and the optical switch are connected. The optical path of the light receiver is switched on and off; the light guide plate is composed of I light guide plate 6 and II light guide plate 7. I light guide plate 6 is composed of multiple X-direction optical waveguides 12-1, and II light guide plate 7 is composed of multiple Y-direction optical waveguides. 11-1 is constituted; the optical switches are arranged in rows, and at most one optical switch is provided at the intersection of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1; the X-direction optical waveguides 12-1 are arranged in rows, and the Y-direction optical waveguide 11-1 The angle between the X-direction optical waveguide 12-1 and the The optical path with the X-direction optical waveguide 12-1 or the optical path with the Y-direction optical waveguide 11-1 is blocked.
进一步的是：电路片由Y-PCBA13、X-PCBA10构成，其中，X-PCBA10的长度沿导光板的长度方向布置，Y-PCBA13的长度沿导光板的宽度方向布置；光接收器与X向光波导12-1光路导通，光发射器与Y向光波导11-1光路导通或光接收器与Y向光波导11-1光路导通，光发射器与X向光波导12-1光路导通；光接收器设置在X-PCBA10上，光发射器设置在Y-PCBA13上或光接收器设置在Y-PCBA13上，光发射器设置在X-PCBA10上。Further: the circuit chip is composed of Y-PCBA13 and X-PCBA10, wherein the length of X-PCBA10 is arranged along the length direction of the light guide plate, and the length of Y-PCBA13 is arranged along the width direction of the light guide plate; the light receiver is aligned with the X-direction The optical path of the optical waveguide 12-1 is connected, and the optical transmitter and the Y-direction optical waveguide 11-1 are connected, or the optical receiver and the Y-direction optical waveguide 11-1 are connected, and the optical transmitter and the X-direction optical waveguide 12-1 are connected. The optical path is connected; the optical receiver is set on X-PCBA10 and the optical transmitter is set on Y-PCBA13 or the optical receiver is set on Y-PCBA13 and the optical transmitter is set on X-PCBA10.
进一步的是：光发射器为侧LED13-2，光接收器为光敏管10-2，Y导光板11位于X导光板12上方，X-PCBA10为光接收PCBA，Y-PCBA13为光发射PCBA，X-PCBA10上的光敏管10-2位于2个X向光波导12-1之间的贯穿孔内，光敏管10-2通过Y向光波导11-1的光入射窗口与Y向光波导11-1光路导通，Y-PCBA13上的侧LED13-2发出的光入射X向光波导12-1。Further: the light emitter is the side LED13-2, the light receiver is the photosensitive tube 10-2, the Y light guide plate 11 is located above the X light guide plate 12, the X-PCBA10 is the light receiving PCBA, and the Y-PCBA13 is the light emitting PCBA. Photosensitive tube 10-2 on the -1 optical path is turned on, and the light emitted by the side LED13-2 on the Y-PCBA13 is incident on the X-directional light waveguide 12-1.
进一步的是：光发射器为侧LED13-2，光接收器为光敏管10-2，Y导光板11位于X导光板12上方，X-PCBA10为光发射PCBA，Y-PCBA13为光接收PCBA，X-PCBA10上的侧LED13-2发出的光入射Y向光波导11-1的端面，Y-PCBA13上的光敏管10-2位于X向光波导12-1的贯穿孔内，Y-PCBA13位于X导光板12沿长度方向的两端之间。Further: the light emitter is the side LED13-2, the light receiver is the photosensitive tube 10-2, the Y light guide plate 11 is located above the X light guide plate 12, the X-PCBA10 is the light emitting PCBA, and the Y-PCBA13 is the light receiving PCBA. The light emitted by the side LED13-2 on the X-PCBA10 is incident on the end face of the Y-direction optical waveguide 11-1. The photosensitive tube 10-2 on the Y-PCBA13 is located in the through hole of the X-direction optical waveguide 12-1. The Y-PCBA13 is located on between the two ends of the X light guide plate 12 along the length direction.
进一步的是：光接收器为光敏管10-2，X导光板12位于Y导光板11上方，Y-PCBA13为光接收PCBA，X-PCBA10为光发射PCBA，Y-PCBA13位于沿X导光板12长度方向的两端之间，Y-PCBA13上的光敏管10-2位于2个Y向光波导11-1之间的贯穿孔内，光敏管10-2通过X向光波导12-1的光入射窗口，与X向光波导12-1光路导通。Further: the light receiver is a photosensitive tube 10-2, the X light guide plate 12 is located above the Y light guide plate 11, the Y-PCBA13 is a light receiving PCBA, the X-PCBA10 is a light emitting PCBA, and the Y-PCBA13 is located along the X light guide plate 12 Between the two ends in the length direction, the photosensitive tube 10-2 on the Y-PCBA13 is located in the through hole between the two Y-direction optical waveguides 11-1. The photosensitive tube 10-2 passes the light of the X-direction optical waveguide 12-1. The incident window is connected to the optical path of the X-directional light waveguide 12-1.
进一步的是：光发射器为侧LED13-2，X导光板12位于Y导光板11上方，光发射PCBA由2个Y-PCBA13构成，2个Y-PCBA13分别位于沿长度方向的X导光板12的两端，侧LED13-2发射的光信号向内入射X向光波导12-1；X导光板12被分隔成多路沿正X方向布置的X向光波导12-1，侧LED13-2分别位于X向光波导12-1的两端，X-PCBA10为光接收PCBA，X-PCBA10位于Y导光板11沿宽度方向的两端之间。Further: the light emitter is the side LED13-2, the X light guide plate 12 is located above the Y light guide plate 11, the light emission PCBA is composed of 2 Y-PCBA13, and the 2 Y-PCBA13 are respectively located on the X light guide plate 12 along the length direction. At both ends, the optical signal emitted by the side LED13-2 is incident on the X-ray waveguide 12-1; the X-ray guide plate 12 is divided into multiple X-ray waveguides 12-1 arranged along the positive X direction, and the side LED13-2 Located at both ends of the X-direction optical waveguide 12-1 respectively, the X-PCBA10 is a light-receiving PCBA, and the X-PCBA10 is located between the two ends of the Y light guide plate 11 along the width direction.
进一步的是：光发射器为侧LED13-2，光接收器为光敏管10-2，光敏管10-2与Y向光波导11-1一一对应，侧LED13-2与Y向光波导11-1一一对应。Further: the light emitter is the side LED13-2, the light receiver is the photosensitive tube 10-2, the photosensitive tube 10-2 corresponds to the Y-direction optical waveguide 11-1, and the side LED13-2 and the Y-direction optical waveguide 11 -1 corresponds to one-to-one.
进一步的是：光开关模块还包括电路片、光发射器，电路片由光接收PCBA、光发射PCBA构成，电路片位于X导光板12或Y导光板11及其组合的下方，光发射器从Y向光波导11-1的端面入射Y向光波导11-1。Further: the optical switch module also includes a circuit chip and a light transmitter. The circuit chip is composed of a light receiving PCBA and a light transmitting PCBA. The circuit chip is located under the X light guide plate 12 or Y light guide plate 11 and their combination. The light transmitter is from The Y-direction optical waveguide 11-1 is incident on the end surface of the Y-direction optical waveguide 11-1.
有益效果beneficial effects
本发明提供一种成本大幅降低的光开关模块，本发明可将PCB板的面积减少了约85%-90%，发射接收电子元件由总计107个减少为总计35个(发射接收电子元件的数量减少约70%)；The present invention provides an optical switch module with greatly reduced cost. The present invention can reduce the area of the PCB board by about 85%-90%, and reduce the number of transmitting and receiving electronic components from a total of 107 to a total of 35 (the number of transmitting and receiving electronic components is reduced by approximately 70%);
本发明成本测算：PCB板约3.6元，LED约1.87元，键盘每个总计减少材料成本约18.8元/个，其中，未包括LED减少后，生产PCB板时焊盘减少的成本、未计LED焊接减少的成本；本发明与现有技术比较：仅增加了两张导光板（透明塑料--PC片）及增加了多张PET薄膜生产的反射膑，成本测算结果:考本发明键盘的生产成本下降了14元/个-18/个（本发明的成本优势非常明显）；本发明可广泛应用于PC键盘、薄型的薄膜键盘、薄型的笔记本键盘；薄型的薄膜键盘广泛应用于医疗设备、工控设备、家用电器如洗衣机、微波炉等。Cost calculation of the present invention: PCB board is about 3.6 yuan, LED is about 1.87 yuan, the total material cost reduction of each keyboard is about 18.8 yuan/unit, which does not include the cost of reducing the pads when producing the PCB board after the LED is reduced, and does not include the LED The cost of welding reduction; Comparing the present invention with the existing technology: only two light guide plates (transparent plastic-PC sheets) are added and multiple PET films are added for the production of reflective films. The cost calculation result is: considering the production of the keyboard of the present invention The cost is reduced by 14 yuan/piece to 18 yuan/piece (the cost advantage of the present invention is very obvious); the present invention can be widely used in PC keyboards, thin membrane keyboards, and thin notebook keyboards; thin membrane keyboards are widely used in medical equipment, Industrial control equipment, household appliances such as washing machines, microwave ovens, etc.
附图说明Description of the drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are: For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.
 图1是采用本发明的光开关模块9的键盘的主视图；Figure 1 is a front view of a keyboard using the optical switch module 9 of the present invention;
图2是图1的局部放大图；Figure 2 is a partial enlarged view of Figure 1;
图3是光开关采用的阻断体5的上立体图；Figure 3 is a top perspective view of the blocking body 5 used in the optical switch;
图4是光开关采用的阻断体5的下立体图；Figure 4 is a lower perspective view of the blocking body 5 used in the optical switch;
图5是一个键单元的光转换窗口采用导光网点7-1的光开关模块的立体图；Figure 5 is a perspective view of an optical switch module in which the light conversion window of a key unit adopts light guide points 7-1;
图6是图2的键帽处于上极限位的剖视图；Figure 6 is a cross-sectional view of the keycap of Figure 2 in the upper extreme position;
图7是图2的键帽被触发并处于下极限位的剖视图；Figure 7 is a cross-sectional view of the keycap of Figure 2 being triggered and in the lower limit position;
图8是图6的局部放大图；Figure 8 is a partial enlarged view of Figure 6;
图9是图7的局部放大图；Figure 9 is a partial enlarged view of Figure 7;
图10是图2的采用另一种光转换窗口的键盘，键帽处于最高位时的剖视图；Figure 10 is a cross-sectional view of the keyboard using another light conversion window in Figure 2 when the keycap is in the highest position;
图11是图2的采用另一种光转换窗口的键盘，键帽处于最低位时的剖视图；Figure 11 is a cross-sectional view of the keyboard using another light conversion window in Figure 2 with the keycap in the lowest position;
图12是图10的局部放大图；Figure 12 is a partial enlarged view of Figure 10;
图13是图11的局部放大图；Figure 13 is a partial enlarged view of Figure 11;
图14是一个键单元的光转换窗口采用透镜7-2的光开关模块的立体图；Figure 14 is a perspective view of an optical switch module using lens 7-2 for the optical conversion window of a key unit;
图15是图1的立体图；Figure 15 is a perspective view of Figure 1;
图16是图15的的***图；Figure 16 is an exploded view of Figure 15;
图17是本发明采用的光开关模块9的立体图；Figure 17 is a perspective view of the optical switch module 9 used in the present invention;
图18是本发明采用的光开关模块9的***图；Figure 18 is an exploded view of the optical switch module 9 used in the present invention;
图19是图18的电子电路的局部放大图；Figure 19 is a partial enlarged view of the electronic circuit of Figure 18;
图20是本发明的光开关模块9采用的Ⅰ导光板6的立体图；Figure 20 is a perspective view of the I light guide plate 6 used in the optical switch module 9 of the present invention;
图21是本发明的光开关模块9采用的Ⅱ导光板7的立体图；Figure 21 is a perspective view of the II light guide plate 7 used in the optical switch module 9 of the present invention;
图22是图21的局部放大图；Figure 22 is a partial enlarged view of Figure 21;
图23是图17的主视图；Figure 23 is a front view of Figure 17;
图24是本发明采用的另一种结构的光开关模块9的立体图；Figure 24 is a perspective view of another structural optical switch module 9 adopted in the present invention;
图25是图24的***图；Figure 25 is an exploded view of Figure 24;
图26是图25的电子电路的局部放大图；Figure 26 is a partial enlarged view of the electronic circuit of Figure 25;
图27是图25的装配结构位置图；Figure 27 is a position diagram of the assembly structure of Figure 25;
图28是图26的局部放大图；Figure 28 is a partial enlarged view of Figure 26;
图29是本发明采用的另一种结构的光开关模块9的***图；Figure 29 is an exploded view of another structural optical switch module 9 adopted in the present invention;
图30是图29的的立体图；Figure 30 is a perspective view of Figure 29;
图31是图30的局部放大图；Figure 31 is a partial enlarged view of Figure 30;
图32是图31去除阻断体5及Y上反射膜11-3的立体图；Figure 32 is a perspective view of Figure 31 with the blocking body 5 and the reflective film 11-3 on the Y removed;
图33是图32去除Y导光板11的立体图；Figure 33 is a perspective view of Figure 32 with the Y light guide plate 11 removed;
图34是图33去除Y下反射膜11-4的立体图；Figure 34 is a perspective view of Figure 33 with the lower Y reflective film 11-4 removed;
图35是图34去除X上反射膜12-3的立体图；Figure 35 is a perspective view of Figure 34 with the upper reflective film 12-3 removed;
图36是图35去除X导光板12及X下反射膜12-4的立体图；Figure 36 is a perspective view of Figure 35 with the X light guide plate 12 and the X lower reflective film 12-4 removed;
图37是本发明采用的另一种结构的光开关模块9的***图；Figure 37 is an exploded view of another structural optical switch module 9 adopted in the present invention;
图38是图37的的立体图；Figure 38 is a perspective view of Figure 37;
图39是图38的局部放大图；Figure 39 is a partial enlarged view of Figure 38;
图40是图39去除阻断体5及X上反射膜12-3的立体图；Figure 40 is a perspective view of Figure 39 with the blocking body 5 and the reflective film 12-3 on the X removed;
图41是图40去除X导光板12的立体图；Figure 41 is a perspective view of Figure 40 with the X light guide plate 12 removed;
图42是图41去除X下反射膜12-4的立体图；Figure 42 is a perspective view of Figure 41 with the X-lower reflective film 12-4 removed;
图43是图42去除Y上反射膜11-3的立体图；Figure 43 is a perspective view of Figure 42 with the reflective film 11-3 on Y removed;
图44是图42去除Y导光板11及Y下反射膜11-4的立体图；Figure 44 is a perspective view of Figure 42 with the Y light guide plate 11 and the Y lower reflective film 11-4 removed;
图45是本发明采用的另一种结构的光开关模块9的***图。Figure 45 is an exploded view of another structural optical switch module 9 adopted in the present invention.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
本发明的最佳实施方式Best Mode of Carrying Out the Invention
参见实施例3--实施例5、电路片由光接收PCBA、光发射PCBA构成，电路片位于X导光板12或Y导光板11及其组合的下方；此技术方案:光接收PCBA与光发射PCBA电气连接更方便，甚至可以将光接收PCBA与光发射PCBA焊接在一起；(参见实施例1、实施例2)避免了电路片需做成异形，以避免与阻断体5干涉；避免了电路片需做成异而形造成材料浪费，Y-PCBA13采用双面PCB板，正面安装侧LED13-2或正面安装光敏管10-2，反面可安装MCU及其***电路，进一步减少了PCB板的面积。Referring to Embodiment 3 - Embodiment 5, the circuit chip is composed of a light receiving PCBA and a light emitting PCBA. The circuit chip is located below the X light guide plate 12 or the Y light guide plate 11 and their combination; this technical solution: light receiving PCBA and light emitting PCBA PCBA electrical connection is more convenient, and the light-receiving PCBA and the light-emitting PCBA can even be welded together; (see Embodiment 1, Embodiment 2) avoids the need for the circuit chip to be made into a special shape to avoid interference with the blocking body 5; avoid Circuit chips need to be made differently, resulting in material waste. Y-PCBA13 uses a double-sided PCB board. The side LED13-2 or the photosensitive tube 10-2 is installed on the front side. The MCU and its peripheral circuits can be installed on the back side, further reducing the number of PCB boards. area.
参见图25、以104键的键盘为例，光发射器从Y向光波导11-1的端面入射Y向光波导11-1, 仅需6个光接收器，由于光接收器接收的信号较弱，需放大电路放大信号后, 才与MCU连接，如采用图18的技术方案，需23个光接收器，相应的需23路放大电路，导致电路片成本上升。See Figure 25. Taking a 104-key keyboard as an example, the optical transmitter is incident on the Y-direction optical waveguide 11-1 from the end face of the Y-direction optical waveguide 11-1. Only 6 optical receivers are needed. Since the signal received by the optical receiver is relatively small, Weak, an amplification circuit is required to amplify the signal before connecting to the MCU. If the technical solution in Figure 18 is adopted, 23 optical receivers are required, and accordingly 23 amplification circuits are required, resulting in an increase in the cost of the circuit chip.
本发明的实施方式Embodiments of the invention
实施例1 ：如图1-图9、如图1、图2、本实施例以104个键位的键盘（使用了104个光开关），详细说明本发明的光开关模块，其中，图2是图1的局部放大图。如图3、图4、本实施例的每个光开关采一个有弹性的阻断体5，本实施例的阻断体5采用硅橡胶制作，阻断体5也可采用金属薄片冲压成型，阻断体5由导光阻断部5-1、阻断弹力臂5-2构成、阻断安装面5-3、阻断导光孔5-4构成，其中，导光阻断部5-1的高度方向与阻断安装面5-3垂直，阻断导光孔5-4沿导光阻断部5-1的高度方向贯穿导光阻断部5-1并位于导光阻断部5-1中部位置，阻断弹力臂5-2的一端与导光阻断部5-1连接，阻断弹力臂5-2的另一端与阻断安装面5-3连接，形成环状的弹力臂。 Embodiment 1: As shown in Figures 1 to 9, Figure 1 and Figure 2, this embodiment uses a 104-key keyboard (using 104 optical switches) to describe the optical switch module of the present invention in detail, wherein, Figure 2 This is a partial enlarged view of Figure 1. As shown in Figure 3 and Figure 4, each optical switch in this embodiment uses an elastic blocking body 5. The blocking body 5 in this embodiment is made of silicone rubber. The blocking body 5 can also be stamped and formed from metal sheets. The blocking body 5 is composed of a light guide blocking part 5-1, a blocking elastic arm 5-2, a blocking mounting surface 5-3, and a blocking light guide hole 5-4. The light guide blocking part 5- The height direction of 1 is perpendicular to the blocking installation surface 5-3, and the blocking light guide hole 5-4 penetrates the light guide blocking portion 5-1 along the height direction of the light guide blocking portion 5-1 and is located in the light guide blocking portion At the middle position of 5-1, one end of the blocking elastic arm 5-2 is connected to the light guide blocking part 5-1, and the other end of the blocking elastic arm 5-2 is connected to the blocking installation surface 5-3 to form a ring. Elastic arm.
 如图5、本实施例采用的光开关模块9由阻断体5(图中未表示)、可高效导光的Ⅰ导光板6、可高效导光的Ⅱ导光板7、光发射PCBA(图中未表示)、光接收PCBA(图中未表示)构成，其中，Ⅰ导光板6位于Ⅱ导光板7上方，在Ⅰ导光板6设置贯穿其板面的阻断贯穿孔，本实施例采用的阻断贯穿孔由窗口贯穿孔6-1构成，在Ⅱ导光板7设置光转换窗口，本实施例的光转换窗口采用在Ⅱ导光板7上表面设置导光网点7-1(本实施例采用在导光板上热压成型N个凹微透镜)；导光板的导光网点7-1也可采用导光油墨丝印在导光板上，现更多采用在导光板上热压成型N个凹微透镜(本实施例采用)，光转换窗口位于导光网点7-1上，导光网点7-1将主要沿z方向射出的光信号转换为主要沿xy平面传导；  应确保：导光网点7-1位于窗口贯穿孔6-1内；应确保：窗口贯穿孔6-1的侧壁光滑无毛剌。 As shown in Figure 5, the optical switch module 9 used in this embodiment consists of a blocking body 5 (not shown in the figure), an I light guide plate 6 that can efficiently guide light, an II light guide plate 7 that can efficiently guide light, and a light-emitting PCBA (Fig. (not shown in the figure) and a light-receiving PCBA (not shown in the figure), in which the I light guide plate 6 is located above the II light guide plate 7, and a blocking through hole penetrating its surface is provided on the I light guide plate 6. This embodiment adopts The blocking through hole is composed of a window through hole 6-1, and a light conversion window is provided on the II light guide plate 7. The light conversion window in this embodiment adopts the method of setting light guide mesh points 7-1 on the upper surface of the II light guide plate 7 (this embodiment uses N concave microlenses are hot-pressed on the light guide plate); the light guide dots 7-1 of the light guide plate can also be screen-printed on the light guide plate using light-guiding ink. Nowadays, N concave microlenses are hot-pressed on the light guide plate. Lens (used in this embodiment), the light conversion window is located on the light guide node 7-1, the light guide node 7-1 converts the light signal emitted mainly along the z direction into a light signal mainly transmitted along the xy plane; It should be ensured that: the light guide point 7-1 is located in the window through hole 6-1; it should be ensured that the side wall of the window through hole 6-1 is smooth and free of burrs.
 图6是图2的键帽处于上极限位的一个键的剖视图；如图6所示的一个键位的键装置由键帽1、键盘上壳2、键滑动体3、压缩弹簧4、光开关模块9、键盘下壳8构成，其中，键帽1与键滑动体3固定连接，键滑动体3与键盘上壳2滑动配合，压缩弹簧4将键滑动体3顶压在上极限位(此时键帽1位于最高位置)；导光板的上下面分别贴有上反射膜（附图中已表示，但未编号）、下反射膜（附图中已表示，但未编号）。Figure 6 is a cross-sectional view of a key with the keycap of Figure 2 in the upper limit position; the key device of a key position as shown in Figure 6 consists of a keycap 1, a keyboard upper shell 2, a key sliding body 3, a compression spring 4, an optical The switch module 9 and the keyboard lower shell 8 are composed of the key cap 1 and the key sliding body 3, which are in sliding fit with the keyboard upper shell 2. The compression spring 4 presses the key sliding body 3 to the upper limit position ( At this time, the keycap 1 is at the highest position); the upper and lower sides of the light guide plate are respectively affixed with an upper reflective film (shown in the attached figure, but not numbered) and a lower reflective film (shown in the attached figure, but not numbered).
 应确保：Ⅱ导光板7内传播的光信号通过导光网点7-1、阻断导光孔5-4、键滑动体触柱3-1与键帽1上的字符光路导通；应确保：Ⅱ导光板7内传播的光信号通过导光网点7-1与窗口贯穿孔6-1的侧壁光路导通，从而使Ⅱ导光板7内传播的光信号在Ⅰ导光板6内传播。It should be ensured that: the optical signal transmitted in the II light guide plate 7 passes through the light guide points 7-1, the blocking light guide holes 5-4, the key sliding body contact pillar 3-1 and the character light path on the key cap 1; it should be ensured that : The optical signal propagated in the II light guide plate 7 is connected to the side wall optical path of the window through hole 6-1 through the light guide node 7-1, so that the optical signal propagated in the II light guide plate 7 is propagated in the I light guide plate 6.
 如图6--图9、应确保：光发射器(图中未表示)发射的光信号高效入射Ⅱ导光板7，同时，光接收器(图中未表示)与Ⅰ导光板6光路导通；本实施例采用：设置有窗口贯穿孔6-1的Ⅰ导光板6位于Ⅱ导光板7上方，光发射器(图中未表示)发射的光信号入射Ⅱ导光板7，同时，光接收器(图中未表示)与Ⅰ导光板6光路导通；由于光的可逆性，也可采用：光发射器(图中未表示)发射的光信号入射Ⅰ导光板6，同时，光接收器(图中未表示)与Ⅱ导光板7光路导通。As shown in Figure 6 to Figure 9, it should be ensured that: the optical signal emitted by the light transmitter (not shown in the figure) is efficiently incident on the II light guide plate 7, and at the same time, the optical receiver (not shown in the figure) is connected to the optical path of the I light guide plate 6 ; This embodiment uses: the I light guide plate 6 provided with the window through hole 6-1 is located above the II light guide plate 7, the optical signal emitted by the light transmitter (not shown in the figure) is incident on the II light guide plate 7, and at the same time, the light receiver (not shown in the figure) is connected to the optical path of the I light guide plate 6; due to the reversibility of light, it can also be used: the optical signal emitted by the light transmitter (not shown in the figure) is incident on the I light guide plate 6, and at the same time, the light receiver ( (not shown in the figure) is connected to the optical path of II light guide plate 7.
如图6-图9、当键帽1被触发时，键滑动体3克服压缩弹簧4的弹力向下滑动移动一段距离，键滑动体3继续向下移动，键滑动体触柱3-1克服阻断弹力臂5-2的弹力，推动导光阻断部5-1向下移动，如图7、图9、键滑动体3向下移动至下极限位(此时键帽1位于最低位置)时，导光阻断部5-1的下端无限接近Ⅱ导光板7的上表面，导光阻断部5-1的下端覆盖Ⅱ导光板7上的导光网点7-1，阻断了导光网点7-1与窗口贯穿孔6-1的侧壁之间的光路，此时光发射器(图中未表示)发射的光信号被阻断，光接收器(图中未表示)不能接收到光发射器发射的光信号；当外力去除时，在弹力作用下导光阻断部5-1连同键滑动体3及键帽1向上复位至上极限位。As shown in Figure 6 to Figure 9, when the key cap 1 is triggered, the key sliding body 3 overcomes the elastic force of the compression spring 4 and slides downward for a certain distance. The key sliding body 3 continues to move downward, and the key sliding body 3-1 overcomes the elastic force of the compression spring 4. Block the elastic force of the elastic arm 5-2 and push the light guide blocking part 5-1 to move downward. As shown in Figure 7 and Figure 9, the key sliding body 3 moves downward to the lower limit position (at this time, the key cap 1 is at the lowest position ), the lower end of the light guide blocking part 5-1 is infinitely close to the upper surface of the II light guide plate 7, and the lower end of the light guide blocking part 5-1 covers the light guide mesh points 7-1 on the II light guide plate 7, blocking The optical path between the light guide node 7-1 and the side wall of the window through hole 6-1. At this time, the optical signal emitted by the optical transmitter (not shown in the figure) is blocked, and the optical receiver (not shown in the figure) cannot receive it. to the optical signal emitted by the light emitter; when the external force is removed, the light-guiding blocking part 5-1 together with the key sliding body 3 and the keycap 1 are reset upward to the upper limit position under the action of elastic force.
 如图10--图14、本技术方案采用在Ⅱ导光板7上表面设置透镜7-2，光转换窗口位于透镜7-2的圆弧表面，透镜7-2采用高透明材料，制作时最佳方案是在高透明材料中添加导光粉，使光通过透镜7-2时产生散射(光通过透镜7-2时，使透镜7-2通体发光，即实现透镜7-2向四周发光)；透镜7-2与窗口贯穿孔6-1光路导通；透镜7-2将主要沿z方向射出的光信号转换为主要沿xy平面传导，透镜7-2可采用点胶机在Ⅱ导光板7点胶形成。As shown in Figure 10 to Figure 14, this technical solution uses a lens 7-2 on the upper surface of the II light guide plate 7. The light conversion window is located on the arc surface of the lens 7-2. The lens 7-2 is made of highly transparent materials, which is the most cost-effective during production. The best solution is to add light-conducting powder to a highly transparent material to cause light to scatter when it passes through lens 7-2 (when light passes through lens 7-2, the whole body of lens 7-2 will be illuminated, that is, lens 7-2 will be able to emit light all around) ; The optical path of lens 7-2 and window through hole 6-1 is connected; lens 7-2 converts the light signal mainly emitted along the z direction into mainly transmitted along the xy plane. Lens 7-2 can be installed on the II light guide plate using a dispensing machine. 7 points of glue are formed.
 应确保：透镜7-2的直径小于阻断导光孔5-4的直径，从而确保：键帽1移动至下极限位时，透镜7-2能位于阻断导光孔5-4的孔形成的空间内。It should be ensured that the diameter of the lens 7-2 is smaller than the diameter of the blocking light guide hole 5-4, thereby ensuring that when the keycap 1 moves to the lower limit position, the lens 7-2 can be located in the hole of the blocking light guide hole 5-4. within the space formed.
 参见图15、键盘（图15是图1的立体图，使用了104个光开关）由键帽1、键盘上壳2、键盘下壳8构成。Referring to Figure 15, the keyboard (Figure 15 is a perspective view of Figure 1, using 104 optical switches) is composed of keycap 1, keyboard upper shell 2, and keyboard lower shell 8.
 参见图16、光开关模块9位于键盘上壳2、键盘下壳8之间，且键帽1与光开关模块9上的光开关一一对应，安装完后，光开关模块9被封闭在键盘上壳2及键盘下壳8内。Referring to Figure 16, the optical switch module 9 is located between the keyboard upper shell 2 and the keyboard lower shell 8, and the keycap 1 corresponds to the optical switches on the optical switch module 9. After installation, the optical switch module 9 is enclosed in the keyboard. In the upper shell 2 and the keyboard lower shell 8.
 参见图17--图18、光开关模块9的长度方向与X座标重合，光开关模块9的宽度方向与Y座标重合，光开关模块9的厚度方向与Z座标重合，正X方向、正Y方向、正Z方向分别与X座标重合、Y座标重合、Z座标重合；为提高光在导光板内的传播效率，Ⅰ导光板6的上下面分别贴有上反射膜（附图18中未编号）、下反射膜（附图18中未编号），Ⅱ导光板7的上下面分别贴有上反射膜（附图18中未编号）、下反射膜（图中未表示），当导光板较小或LED采用红外芯片（光辐射高）时，导光板也可不贴反射膜，本实施例采用了导光板贴反射膜方案，但为简化附图实施例1未对反射膜进行编号；光开关模块9由与键帽1数量相等的阻断体5、Ⅰ导光板6、Ⅱ导光板7、X-PCBA10、Y-PCBA13、构成，其中，Ⅰ导光板6本实施例采用Y导光板11，Ⅱ导光板7本实施例采用X导光板12。Refer to Figure 17--Figure 18. The length direction of the optical switch module 9 coincides with the X coordinate, the width direction of the optical switch module 9 coincides with the Y coordinate, the thickness direction of the optical switch module 9 coincides with the Z coordinate, and the positive X direction , the positive Y direction, and the positive Z direction coincide with the X coordinate, the Y coordinate, and the Z coordinate respectively; in order to improve the propagation efficiency of light in the light guide plate, the upper and lower sides of the I light guide plate 6 are respectively affixed with upper reflective films ( (not numbered in Figure 18) and a lower reflective film (not numbered in Figure 18). The upper and lower sides of the II light guide plate 7 are respectively affixed with an upper reflective film (not numbered in Figure 18) and a lower reflective film (not shown in the figure). ), when the light guide plate is small or the LED uses an infrared chip (high light radiation), the light guide plate does not need to be attached with a reflective film. This embodiment adopts the solution of attaching a reflective film to the light guide plate, but in order to simplify the drawings, Example 1 does not attach the reflective film to the light guide plate. The films are numbered; the optical switch module 9 is composed of the same number of blocking bodies 5 as the keycap 1, I light guide plate 6, II light guide plate 7, X-PCBA10, Y-PCBA13, among which, the I light guide plate 6 in this embodiment The Y light guide plate 11 is used, and the II light guide plate 7 is used in this embodiment. The X light guide plate 12 is used.
 参见图18-图23、光开关由位于导光板上的窗口贯穿孔6-1、由位于导光板上的光转换窗口、阻断体5、光发射器、光发射器构成；Ⅰ导光板6位于Ⅱ导光板7上方，窗口贯穿孔6-1位于Ⅰ导光板6上，光转换窗口位于Ⅱ导光板7上，Ⅰ光波导由Y导光板11构成，Ⅱ光波导由X导光板12构成。Referring to Figures 18 to 23, the optical switch is composed of a window through hole 6-1 located on the light guide plate, a light conversion window located on the light guide plate, a blocking body 5, a light emitter, and a light emitter; I light guide plate 6 Located above the II light guide plate 7, the window through hole 6-1 is located on the I light guide plate 6, the light conversion window is located on the II light guide plate 7, the I light waveguide is composed of the Y light guide plate 11, and the II light waveguide is composed of the X light guide plate 12.
 X导光板12被沿正X方向的X导板隔光槽12-2分隔成多路沿正X方向布置的X向光波导12-1，Y导光板11被沿Y方向的Y导板隔光槽11-2分隔成多路沿Y方向布置的Y向光波导11-1；沿Y方向布置的Y向光波导11-1：Y向光波导11-1可以沿正Y方向布置，Y向光波导11-1也可以沿与正Y方向成一定夹角布置（本实施例采用）；光开关由位于导光板上的窗口贯穿孔6-1、由位于导光板上的光转换窗口、阻断体5、与导光板光路导通的光发射器、与导光板光路导通的光发射器构成；X向光波导12-1、Y向光波导11-1交汇处设置一个光开关，光开关成行排列。The X light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive X direction by X guide plate light shielding grooves 12-2 along the positive 11-2 is divided into multiple Y-direction optical waveguides 11-1 arranged along the Y direction; Y-direction optical waveguides 11-1 arranged along the Y direction: Y-direction optical waveguides 11-1 can be arranged along the positive Y direction, The waveguide 11-1 can also be arranged at a certain angle with the positive Y direction (adopted in this embodiment); the optical switch consists of a window through hole 6-1 located on the light guide plate, a light conversion window located on the light guide plate, and a blocking Body 5 is composed of a light emitter that is connected to the light path of the light guide plate and a light emitter that is connected to the light path of the light guide plate; an optical switch is provided at the intersection of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1. Arrange in rows.
 X导光板12被分隔成多路沿正X方向布置的X向光波导12-1，Y导光板11被分隔成多路沿Y方向布置的Y向光波导11-1；阻断贯穿孔由窗口贯穿孔6-1构成，光转换窗口位于导光网点7-1上；本实施例采用：键盘为104键键位时，Y导光板11被分隔成23路Y向光波导11-1；键盘为87键位时（图中未表示），Y导光板11被分隔成13路Y向光波导11-1；X导光板12被分隔成6路X向光波导12-1，成行排列的X向光波导12-1沿正X方向布置。The X light guide plate 12 is divided into multiple X-direction optical waveguides 12-1 arranged along the positive X direction, and the Y light guide plate 11 is divided into multiple Y-direction optical waveguides 11-1 arranged along the Y direction; the blocking through hole is The window through hole 6-1 is formed, and the light conversion window is located on the light guide node 7-1; this embodiment adopts: when the keyboard has a 104-key key position, the Y light guide plate 11 is divided into 23 Y-direction light waveguides 11-1; When the keyboard has 87 keys (not shown in the figure), the Y light guide plate 11 is divided into 13 Y-direction light waveguides 11-1; the X light guide plate 12 is divided into 6 X-direction light waveguides 12-1, arranged in rows. The X-direction optical waveguide 12-1 is arranged along the positive X direction.
 参见图18-图19、本实施例采用：光发射器为侧发光的侧LED13-2，侧LED13-2有2颗LED芯片，其中一颗为色光LED芯片，另一颗为红外LED芯片；光接收器为光敏管10-2，光敏管10-2为红外光敏管，侧LED13-2的红外LED芯片发射红外光，并与红外光敏管10-2光路导通；侧LED13-2的色光LED芯片发射的光与键帽上的字符光路导通。Referring to Figures 18 and 19, this embodiment adopts: the light emitter is a side LED13-2 that emits side light, and the side LED13-2 has 2 LED chips, one of which is a color LED chip and the other is an infrared LED chip; The light receiver is a photosensitive tube 10-2, which is an infrared photosensitive tube. The infrared LED chip of the side LED 13-2 emits infrared light and is connected to the light path of the infrared photosensitive tube 10-2; the color light of the side LED 13-2 The light emitted by the LED chip is connected to the character optical path on the keycap.
X向光波导12-1沿其长度方向的两个端面之间，设置有贯穿X向光波导12-1板面的X导板发射孔12-3，本实施例采用：沿X向光波导12-1长度方向的两个端面之间的中部附近设置有贯穿其板面的X导板发射孔12-3，侧LED13-2位于X导板发射孔12-3内，侧LED13-2发射的光信号，分别入射左侧的X向光波导12-1、右侧的X向光波导12-1。Between the two end surfaces of the X-direction optical waveguide 12-1 along its length direction, an X-guide plate emission hole 12-3 is provided that penetrates the plate surface of the X-direction optical waveguide 12-1. This embodiment adopts: along the X-direction optical waveguide 12 An X guide plate emission hole 12-3 is provided near the middle between the two end faces in the length direction of -1 and runs through the board surface. The side LED13-2 is located in the X guide plate emission hole 12-3. The light signal emitted by the side LED13-2 , respectively incident on the X-directional light waveguide 12-1 on the left and the X-directional light waveguide 12-1 on the right.
 也可采用（此方案图中未表示）：2个侧LED13-2分别位于沿X向光波导12-1长度方向的的两端，2个侧LED13-2发射的光信号分别向内入射X向光波导12-1。It can also be adopted (this solution is not shown in the figure): the two side LEDs 13-2 are respectively located at both ends along the length direction of the Phototropic waveguide 12-1.
 参见图18--图22、本实施例采用：Y导光板11位于X导光板12上方，X-PCBA10及阻断体5位于Y导光板11上方，Y-PCBA13位于X导光板12下方；长条形的X导板隔光槽12-2为贯穿X导光板12的通孔，5条沿正X方向的X导板隔光槽12-2将X导光板12分割为6路X向光波导12-1，每一路X向光波导12-1的沿X方向的中部附近设置有贯穿其板的X导板发射孔12-3，X向光波导12-1成行排列。Referring to Figures 18 to 22, this embodiment uses: Y light guide plate 11 is located above the X light guide plate 12, X-PCBA 10 and blocking body 5 are located above the Y light guide plate 11, Y-PCBA 13 is located below the X light guide plate 12; long The strip-shaped X guide plate light isolating grooves 12-2 are through holes that penetrate the X light guide plate 12. The five X guide plate light isolating grooves 12-2 along the positive X direction divide the X light guide plate 12 into six X-direction light waveguides 12. -1. Each X-direction optical waveguide 12-1 is provided with an X-guide plate emission hole 12-3 penetrating its plate near the middle along the X-direction, and the X-direction optical waveguides 12-1 are arranged in rows.
 应确保：光敏管10-2与Y向光波导11-1一一对应；应确保：X导光板12的每一路X向光波导12-1的光路彼此隔离以杜绝各光路彼此漏光；Y导光板11设置有23路Y向光波导11-1，Y向光波导11-1与成行排列的X向光波导12-1的夹角为&，夹角&为30度—90度，但以夹角&为50度—90度为最佳；应确保：Y导光板11的每一路Y向光波导11-1的光路彼此隔离以杜绝各光路彼此漏光；应确保：X向光波导12-1的行数与光开关的行数相等。It should be ensured that: the photosensitive tube 10-2 corresponds to the Y-direction optical waveguide 11-1 one by one; it should be ensured that: the optical paths of each X-direction optical waveguide 12-1 of the X-direction light guide plate 12 are isolated from each other to prevent each optical path from leaking light from each other; The light plate 11 is provided with 23 Y-direction optical waveguides 11-1. The included angle between the Y-direction optical waveguide 11-1 and the X-direction optical waveguides 12-1 arranged in rows is &, and the included angle & is 30 degrees to 90 degrees, but The included angle & is 50 degrees to 90 degrees; it should be ensured that: the optical paths of each Y-direction optical waveguide 11-1 of the Y-light guide plate 11 are isolated from each other to prevent each optical path from leaking light from each other; it should be ensured that: the X-direction optical waveguide 12- The number of rows of 1's is equal to the number of rows of optical switches.
 应确保：每一路Y向光波导11-1的光路彼此隔离以杜绝各光路彼此漏光；本实施例采用：长条形的Y导板隔光槽11-2将Y导光板11分割为23路Y向光波导11-1；光接收器采用于光检测的光敏管10-2，本实施例的光接收PCBA由X-PCBA10构成，X-PCBA10由呈长条型的X-PCB板10-1、光敏管10-2及其***电路及***组件（图中未表示）构成，其中，光敏管10-2及***电子元件被焊接在X-PCB板10-1上，***电路位于X-PCB板10-1上，光敏管10-2、***电子元件（图中未表示）被焊接在X-PCB板10-1上，***电路X-PCB板10-1位于上，X-PCB板10-1沿正X方向布置，X-PCBA10位于Y导光板11上方，其长度与Y导光板11沿X方向的尺寸相近并略小；每一路沿Y方向布置的Y向光波导11-1设置一组光接收器，一组光接收器由最少一个光敏管10-2构成。It should be ensured that the optical paths of each Y-direction optical waveguide 11-1 are isolated from each other to prevent light leakage from each other; in this embodiment, a long Y-guide plate light isolation groove 11-2 is used to divide the Y-light guide plate 11 into 23 Y-paths Light-oriented waveguide 11-1; the light receiver adopts a photosensitive tube 10-2 for light detection. The light-receiving PCBA of this embodiment is composed of X-PCBA10, and the X-PCBA10 is composed of a long X-PCB board 10-1 , photosensitive tube 10-2 and its peripheral circuits and peripheral components (not shown in the figure), wherein the photosensitive tube 10-2 and peripheral electronic components are welded on the X-PCB board 10-1, and the peripheral circuit is located on the X-PCB On the board 10-1, the photosensitive tube 10-2 and peripheral electronic components (not shown in the figure) are welded on the X-PCB board 10-1, and the peripheral circuit X-PCB board 10-1 is located on the X-PCB board 10 -1 is arranged along the positive X direction, and the X-PCBA 10 is located above the Y light guide plate 11, and its length is similar to and slightly smaller than the size of the Y light guide plate 11 along the A set of light receivers is composed of at least one photosensitive tube 10-2.
应确保：光敏管10-2位于Y向光波导11-1宽度方向的两个端面之间的中部附近，X-PCB板10-1的长度方向沿正X方向布置；应确保：光敏管10-2位于Y向光波导11-1宽度方向的两个端面之间的中部附近的Y贯穿孔内；应确保：光敏管10-2通过Y贯穿孔与Y向光波导11-1光路导通；应确保：Y向光波导11-1的数量与光敏管10-2的数量相等；It should be ensured that: the photosensitive tube 10-2 is located near the middle between the two end faces in the width direction of the Y-direction optical waveguide 11-1, and the length direction of the X-PCB board 10-1 is arranged along the positive X direction; it should be ensured that: the photosensitive tube 10 -2 is located in the Y through hole near the middle between the two end faces in the width direction of the Y-direction optical waveguide 11-1; it should be ensured that: the photosensitive tube 10-2 is connected to the optical path of the Y-direction optical waveguide 11-1 through the Y-direction optical waveguide 11-1 ; It should be ensured that: the number of Y-direction optical waveguides 11-1 is equal to the number of photosensitive tubes 10-2;
也可在Y向光波导11-1上的两个端面之间的中部附近设置导光网点，光敏管10-2也可通过该导光网点与Y向光波导11-1光路导通。A light guide point can also be provided near the middle between the two end faces of the Y-direction optical waveguide 11-1, and the photosensitive tube 10-2 can also be connected to the optical path of the Y-direction optical waveguide 11-1 through the light guide point.
 光发射PCBA由Y-PCBA13构成，Y-PCBA13由Y-PCB板13-1、光发射器、***电路及***电子元件（图中未表示）构成；本实施例的光发射器采用LED光源，但以采用侧发光的侧LED13-2为最佳，2个背靠背的侧发光的侧LED13-2位于X导光板12(Ⅱ导光板7)上的X导板发射孔12-3内，Y-PCBA13位于X导光板12下方；Y-PCBA13的长度沿Y方向布置，PCB板13-1沿Y方向布置。The light-emitting PCBA is composed of Y-PCBA13, and Y-PCBA13 is composed of Y-PCB board 13-1, light emitter, peripheral circuit and peripheral electronic components (not shown in the figure); the light emitter of this embodiment adopts LED light source. However, it is best to use side-emitting side LEDs 13-2. Two back-to-back side-emitting side LEDs 13-2 are located in the X-guide plate emission hole 12-3 on the X-light guide plate 12 (II light guide plate 7). Y-PCBA13 Located below the X light guide plate 12; the length of the Y-PCBA 13 is arranged along the Y direction, and the PCB board 13-1 is arranged along the Y direction.
 由于光的可逆性，光接收PCBA也可Y-PCBA13构成，Y-PCBA13由Y-PCB板13-1、光发射器、***电路及***电子元件（图中未表示）构成；光发射PCBA由X-PCBA10构成，X-PCBA10由呈长条型的X-PCB板10-1、光敏管10-2及其***电路及***组件（图中未表示）构成。Due to the reversibility of light, the light-receiving PCBA can also be composed of Y-PCBA13. Y-PCBA13 is composed of Y-PCB board 13-1, light transmitter, peripheral circuits and peripheral electronic components (not shown in the figure); the light-emitting PCBA is composed of X-PCBA10 is composed of a long X-PCB board 10-1, a photosensitive tube 10-2 and its peripheral circuits and peripheral components (not shown in the figure).
如图1-图22、交叉光波导光开关模块，包括光发射器、光接收器、电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断；导光板由Ⅰ导光板6、Ⅱ导光板7构成，其中，Ⅱ导光板7由多路Ⅱ光波导构成，Ⅰ导光板6由多路Ⅰ光波导构成；成行排列的Ⅱ光波导与Ⅰ光波导的夹角为&；Ⅱ光波导、Ⅰ光波导交汇处设置一个光开关，光开关成行排列。As shown in Figure 1 to Figure 22, the cross optical waveguide optical switch module includes an optical transmitter, an optical receiver, a circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is guided through the optical switch and the optical path of the optical receiver. When the light switch is triggered, the light path between the light transmitter and the light receiver is switched on and off; the light guide plate is composed of I light guide plate 6 and II light guide plate 7, where II light guide plate 7 is composed of multiple II light waveguides. The I light guide plate 6 is composed of multiple I optical waveguides; the angle between the II optical waveguides and the I optical waveguides arranged in rows is &; an optical switch is provided at the intersection of the II optical waveguide and the I optical waveguide, and the optical switches are arranged in rows.
 Ⅰ导光板6为Y导光板11，Ⅰ光波导为Y向光波导11-1，Ⅱ导光板7为X导光板12，Ⅱ光波导为X向光波导12-1；电路片由Y-PCBA13、X-PCBA10构成，其中，X-PCBA10的长度沿导光板的长度方向布置，Y-PCBA13的长度沿导光板的宽度方向布置；X-PCBA10为光接收PCBA，光接收器于X-PCBA10上，Y-PCBA13为光发射PCBA，光发射器位于Y-PCBA13上或X-PCBA10为光发射PCBA，光发射器于X-PCBA10上，Y-PCBA13为光接收PCBA，光接收器位于Y-PCBA13上。The I light guide plate 6 is a Y light guide plate 11, the I optical waveguide is a Y-direction optical waveguide 11-1, the II light guide plate 7 is an X-direction light guide plate 12, and the II optical waveguide is an X-direction optical waveguide 12-1; the circuit chip is made of Y-PCBA13 , X-PCBA10 is composed of, among which, the length of X-PCBA10 is arranged along the length direction of the light guide plate, and the length of Y-PCBA13 is arranged along the width direction of the light guide plate; , Y-PCBA13 is a light-emitting PCBA, the light emitter is located on Y-PCBA13 or X-PCBA10 is a light-emitting PCBA, the light emitter is on X-PCBA10, Y-PCBA13 is a light-receiving PCBA, the light receiver is located on Y-PCBA13 superior.
 包括光发射器、光接收器、电子电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断；导光板设置有多路光波导，光波导上设置有贯穿其板面的多个阻断贯穿孔、多个光转换窗口；导光板由Ⅰ导光板6、Ⅱ导光板7构成，其中，Ⅰ导光板6的光波导由多路X向光波导12-1构成，Ⅱ导光板7的光波导由多路Y向光波导11-1构成；X向光波导12-1成行排列，Y向光波导11-1与X向光波导12-1的夹角为&；光转换窗口位于阻断贯穿孔内，阻断贯穿孔与X向光波导12-1、Y向光波导11-1光路导通；光开关成行排列，阻断贯穿孔成行排列，X向光波导12-1与Y向光波导11-1交汇处设置最多一个阻断贯穿孔。It includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch. When the optical switch is triggered, the optical transmitter and the optical switch are connected. The light path of the light receiver is switched on and off; the light guide plate is provided with multiple optical waveguides, and the optical waveguide is provided with multiple blocking through holes and multiple light conversion windows that penetrate the board surface; the light guide plate is composed of I light guide plate 6 and II The optical waveguide of the I light guide plate 6 is composed of multiple X-direction optical waveguides 12-1, and the optical waveguide of the II light guide plate 7 is composed of multiple Y-direction optical waveguides 11-1; the X-direction optical waveguide 12 -1 are arranged in rows, the angle between the Y-direction optical waveguide 11-1 and the X-direction optical waveguide 12-1 is &; the light conversion window is located in the blocking through hole, and the blocking through hole and the X-direction optical waveguide 12-1, Y The optical path of the directional optical waveguide 11-1 is conducted; the optical switches are arranged in rows, and the blocking through holes are arranged in rows. At most one blocking through hole is provided at the intersection of the X-directional optical waveguide 12-1 and the Y-directional optical waveguide 11-1.
 包括光发射器、光接收器、电子电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断；导光板由Ⅰ导光板6、Ⅱ导光板7构成，Ⅰ导光板6由多路X向光波导12-1构成，Ⅱ导光板7由多路Y向光波导11-1构成；光开关成行排列，X向光波导12-1与Y向光波导11-1交汇处设置最多一个光开关；X向光波导12-1成行排列，Y向光波导11-1与X向光波导12-1的夹角为&；光开关的光转换窗口使X向光波导12-1、Y向光波导11-1光路导通；当光开关被触发时，光转换窗口使X向光波导12-1、Y向光波导11-1的光路被阻隔。It includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch. When the optical switch is triggered, the optical transmitter and the optical switch are connected. The optical path of the light receiver is switched on and off; the light guide plate is composed of I light guide plate 6 and II light guide plate 7. I light guide plate 6 is composed of multiple X-direction optical waveguides 12-1, and II light guide plate 7 is composed of multiple Y-direction optical waveguides. 11-1 is constituted; the optical switches are arranged in rows, and at most one optical switch is provided at the intersection of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1; the X-direction optical waveguides 12-1 are arranged in rows, and the Y-direction optical waveguide 11-1 The angle between the X-direction optical waveguide 12-1 and the The optical paths of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1 are blocked.
本发明提供一种成本大幅降低的光开关模块，本发明可将PCB板的面积减少了约85%-90%，发射接收电子元件的数量减少约70%)。The present invention provides an optical switch module with greatly reduced cost. The present invention can reduce the area of the PCB board by about 85%-90% and the number of transmitting and receiving electronic components by about 70%).
  [0047] 交叉光波导光开关模块的扫描检测方式：参见图23、MCU（图中未表示）为提高光开关模块的扫描速度，本发明采用频率扫描法，使座标为Y1、Y2、Y3......Y6处的6个LED13-2分别发射不同频率的光信号（频率分别为f1、f2、f3、......f6），座标为Y1、Y2、Y3......Y6的6路X向光波导12-1内传播光信号的频率分别为f1、f2、f3、......f6；MCU（图中未表示）逐个扫描23个光敏管10-2的输入信号；当光开关未被触发时，座标为X1、X2、X3......X19的19个光敏管10-2均收到6种f1、f2、f2、......f6不同频率光信号；座标为X20、X21......X23的4个光敏管10-2均收到5种f2、f3、......f6不同频率光信号； [0047] Scanning detection method of cross optical waveguide optical switch module: See Figure 23, MCU (not shown in the figure) in order to improve the scanning speed of the optical switch module, the present invention adopts the frequency scanning method, so that the coordinates are Y1, Y2, Y3 ...The six LED13-2 at Y6 respectively emit light signals of different frequencies (the frequencies are f1, f2, f3,...f6 respectively), and the coordinates are Y1, Y2, Y3... ....The frequencies of the optical signals propagated in the 6-channel X-direction optical waveguide 12-1 of Y6 are f1, f2, f3,...f6 respectively; the MCU (not shown in the figure) scans the 23 photosensitive tubes one by one The input signal of 10-2; when the optical switch is not triggered, the 19 photosensitive tubes 10-2 with coordinates X1, X2, X3...X19 all receive 6 types of f1, f2, f2,. .....f6 different frequency optical signals; the four photosensitive tubes 10-2 with coordinates X20, X21...X23 all receive 5 different frequencies of f2, f3,...f6 light signal;
假设座标为X3Y5处的光开关被触发，座标为X3处的光敏管10-2将收不到频率为f5的光信号，此时，座标为X3处的光敏管10-2只能收到频率为f1、f2、f3、f4、f6的光信号，从而确定座标为X3Y5处的光开关被触发；MCU根据收到频率确定行（X方向）的光开关状态，根据光敏管10-2座标确定列（Y方向）的光开关状态。Assuming that the optical switch at coordinates X3Y5 is triggered, the photosensitive tube 10-2 at coordinates X3 will not receive the optical signal with frequency f5. At this time, the photosensitive tube 10-2 at coordinates It receives optical signals with frequencies f1, f2, f3, f4, and f6, thereby determining that the optical switch at the coordinates The -2 coordinate determines the optical switch state of the column (Y direction).
 实施例2：如图24-图28、本实施例：导光板的上下面均未贴有上下反射膜，本实施例采用：X导光板12位于Y导光板11上方，Y-PCBA13及阻断体5位于X导光板12上方，X-PCBA10位于Y导光板11下方；Ⅰ导光板6位于Ⅱ导光板7上方，窗口贯穿孔6-1位于Ⅰ导光板6上，光转换窗口位于Ⅱ导光板7上，Ⅰ光波导由X导光板12构成，Ⅱ光波导由Y导光板11构成。Embodiment 2: As shown in Figure 24 to Figure 28, this embodiment: the upper and lower sides of the light guide plate are not affixed with upper and lower reflective films. This embodiment uses: X light guide plate 12 is located above the Y light guide plate 11, Y-PCBA 13 and blocking The body 5 is located above the X light guide plate 12, and the 7, the I optical waveguide is composed of the X light guide plate 12, and the II optical waveguide is composed of the Y light guide plate 11.
 如图25、X导光板12被分隔成多路沿正X方向布置的X向光波导12-1，Y导光板11被分隔成多路Y向光波导11-1，侧LED13-2与Y向光波导11-1一一对应；侧LED13-2发射的光信号从Y向光波导11-1的端面入射Y向光波导11-1；每路X向光波导12-1设置最少一组与其光路导通的光敏管10-2；侧LED13-2位于Y向光波导11-1的一端。As shown in Figure 25, the X light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive X direction. The Y light guide plate 11 is divided into multiple Y-direction light waveguides 11-1. There is a one-to-one correspondence with the direction optical waveguides 11-1; the optical signal emitted by the side LED 13-2 is incident on the Y-direction optical waveguide 11-1 from the end face of the Y-direction optical waveguide 11-1; at least one set of each X-direction optical waveguide 12-1 is provided The photosensitive tube 10-2 connected with its light path; the side LED 13-2 is located at one end of the Y-direction optical waveguide 11-1.
 如图25、图26、光发射PCBA由X-PCBA10构成，X-PCBA10由呈长条型的X-PCB板10-1、侧LED13-2及其***电路及***电子元件（图中未表示）构成；光接收PCBA由Y-PCBA13构成，Y-PCBA13由Y-PCB板13-1、光敏管10-2、***电路及***电子元件（图中未表示）构成。As shown in Figure 25 and Figure 26, the light-emitting PCBA is composed of X-PCBA10. ); the light receiving PCBA is composed of Y-PCBA13, and Y-PCBA13 is composed of Y-PCB board 13-1, photosensitive tube 10-2, peripheral circuits and peripheral electronic components (not shown in the figure).
 如图28、Y向光波导11-1的表面设置有透镜7-2，光转换窗口位于透镜7-2上。As shown in Figure 28, a lens 7-2 is provided on the surface of the Y-direction optical waveguide 11-1, and the light conversion window is located on the lens 7-2.
 由于光的可逆性，此技术方案图中未表示，光接收PCBA也可由X-PCBA10构成，X-PCBA10由呈长条型的X-PCB板10-1、光敏管10-2及其***电路及***电子元件（图中未表示）构成；光发射PCBA也可由Y-PCBA13构成，Y-PCBA13由Y-PCB板13-1、侧LED13-2及其***电路及***电子元件（图中未表示）构成。Due to the reversibility of light, this technical solution is not shown in the diagram. The light receiving PCBA can also be composed of X-PCBA10. X-PCBA10 consists of a long X-PCB board 10-1, a photosensitive tube 10-2 and its peripheral circuits. and peripheral electronic components (not shown in the figure); the light-emitting PCBA can also be composed of Y-PCBA13, which is composed of Y-PCB board 13-1, side LED13-2 and its peripheral circuits and peripheral electronic components (not shown in the figure) means) composition.
 其余与实施例1同。The rest is the same as in Example 1.
 实施例3：如图29--图31、Y导光板11位于X导光板12上方，X-PCBA10及Y-PCBA13均位于导光板下方，X导光板12的上下表面分别贴有X上反射膜12-3、X下反射膜12-4，Y导光板11的上下表面分别贴有Y上反射膜11-3、Y下反射膜11-4，X-PCBA10为光接收PCBA，Y-PCBA13为光发射PCBA。Embodiment 3: As shown in Figure 29 to Figure 31, the Y light guide plate 11 is located above the X light guide plate 12, X-PCBA10 and Y-PCBA13 are both located below the light guide plate, and the upper and lower surfaces of the X light guide plate 12 are respectively affixed with X upper reflective films. 12-3, X lower reflective film 12-4, Y upper reflective film 11-3 and Y lower reflective film 11-4 are respectively attached to the upper and lower surfaces of the Y light guide plate 11, X-PCBA10 is a light receiving PCBA, and Y-PCBA13 is Light emitting PCBA.
 如图32--图34、窗口贯穿孔6-1（阻断贯穿孔）位于Y导光板11上，光转换窗口（本实施例采用透镜7-2）位于X导光板12上，透镜7-2位于窗口贯穿孔6-1内，光转换窗口位于透镜7-2的外表面。As shown in Figure 32 to Figure 34, the window through hole 6-1 (blocking through hole) is located on the Y light guide plate 11, the light conversion window (lens 7-2 is used in this embodiment) is located on the X light guide plate 12, and the lens 7- 2 is located in the window through hole 6-1, and the light conversion window is located on the outer surface of the lens 7-2.
 如图32、Y导光板11被沿Y方向的Y导板隔光槽11-2分隔成多路沿Y方向布置的Y向光波导11-1。As shown in Figure 32, the Y light guide plate 11 is divided into multiple Y-direction optical waveguides 11-1 arranged along the Y direction by the Y guide plate light-isolating grooves 11-2 along the Y direction.
 如图35、X导光板12被X导板隔光槽12-2分隔成多路沿正X方向布置的X向光波导12-1。As shown in Figure 35, the X light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive X direction by the X guide plate light isolation groove 12-2.
 如图29及图32--图36、X-PCBA10上的光敏管10-2位于2个X向光波导12-1之间的贯穿孔内，2个X向光波导12-1之间的贯穿孔由X导板隔光槽12-2及糙面贯穿孔（图中未表示）构成；2个X向光波导12-1之间的贯穿孔为X导板隔光槽12-2，X导板隔光槽12-2将X导光板12分隔成多路X向光波导12-1，光敏管10-2位于X导板隔光槽12-2内；也可采用在X导光板12上，沿X方向热压的粗糙面，该粗糙面将X导光板12分隔成多路X向光波导12-1，并在粗糙面开设粗糙面贯穿孔，光敏管10-2位于糙面贯穿孔（图中未表示）内；As shown in Figure 29 and Figure 32--Figure 36, the photosensitive tube 10-2 on the X-PCBA10 is located in the through hole between the two X-direction optical waveguides 12-1. The through hole is composed of the X guide plate light isolation groove 12-2 and the rough surface through hole (not shown in the figure); the through hole between the two X-directional light waveguides 12-1 is the X guide plate light isolation groove 12-2, and the X guide plate The light isolation groove 12-2 separates the X light guide plate 12 into multiple X-directional light waveguides 12-1. The photosensitive tube 10-2 is located in the X guide plate light isolation groove 12-2; it can also be used on the X light guide plate 12, along the The rough surface is hot-pressed in the (not shown in));
光敏管10-2（光敏管10-2的上表面）位于Y向光波导11-1的下板面下方附近或光敏管10-2位于Y向光波导11-1上的通孔内，光入射窗口设置在Y向光波导11-1的下板面或设置在Y向光波导11-1的通孔内，光敏管10-2通过Y向光波导11-1下板面的光入射窗口（图中未表示）与Y向光波导11-1光路导通，光入射窗口本实施例采用在Y向光波导11-1下板面热压成型N个凹微透镜（也可采用在Y向光波导11-1下板面丝印导光油墨），光敏管10-2与Y向光波导11-1一一对应，光敏管10-2与光入射窗口一一对应，Y-PCBA13上的侧LED13-2发出的光入射X向光波导12-1。The photosensitive tube 10-2 (the upper surface of the photosensitive tube 10-2) is located near the bottom of the lower plate surface of the Y-direction optical waveguide 11-1 or the photosensitive tube 10-2 is located in the through hole on the Y-direction optical waveguide 11-1. The incident window is set on the lower plate surface of the Y-direction optical waveguide 11-1 or in the through hole of the Y-direction optical waveguide 11-1. The photosensitive tube 10-2 passes through the light incident window on the lower plate surface of the Y-direction optical waveguide 11-1. (not shown in the figure) is connected to the optical path of the Y-direction optical waveguide 11-1, and the light incident window is used in this embodiment to heat-form N concave microlenses on the lower surface of the Y-direction optical waveguide 11-1 (it can also be used in the Y-direction optical waveguide 11-1) Silk-printed light guide ink on the lower surface of the light waveguide 11-1), the photosensitive tube 10-2 corresponds to the Y-directional light waveguide 11-1, the photosensitive tube 10-2 corresponds to the light incident window, and the The light emitted by the side LED 13-2 is incident on the X-directional light waveguide 12-1.
 由于光的可逆性，上述技术方案也可采用：X-PCBA10为光发射PCBA，Y-PCBA13为光接收PCBA，侧LED13-2位于X-PCBA10上，X-PCBA10上的侧LED13-2发出的光入射Y向光波导11-1的端面（侧LED13-2与Y向光波导11-1的位置关系可参看如图25--图26）；光敏管10-2位于Y-PCBA13上，Y-PCBA13上的光敏管10-2位于X向光波导12-1的贯穿孔内（图中未表示），使光敏管10-2与X向光波导12-1光路导通，其上安装有光敏管10-23的Y-PCBA13位于X导光板12沿长度方向的两端之间，本实施例采用：光敏管10-23位于X导光板12沿长度方向的两端之间的中部附近，Y-PCBA13位于X导光板12沿长度方向的两端之间的中部附近。Due to the reversibility of light, the above technical solution can also be adopted: X-PCBA10 is a light-emitting PCBA, Y-PCBA13 is a light-receiving PCBA, the side LED13-2 is located on the X-PCBA10, and the side LED13-2 on the X-PCBA10 emits Light is incident on the end face of the Y-direction optical waveguide 11-1 (the positional relationship between the side LED13-2 and the Y-direction optical waveguide 11-1 can be seen in Figure 25-Figure 26); the photosensitive tube 10-2 is located on the Y-PCBA13, Y -The photosensitive tube 10-2 on the PCBA13 is located in the through hole of the X-ray waveguide 12-1 (not shown in the figure), so that the photosensitive tube 10-2 is connected to the optical path of the X-ray waveguide 12-1, and a The Y-PCBA 13 of the photosensitive tube 10-23 is located between the two ends of the X light guide plate 12 along the length direction. In this embodiment, the photosensitive tube 10-23 is located near the middle between the two ends of the X light guide plate 12 along the length direction. The Y-PCBA 13 is located near the middle between the two ends of the X light guide plate 12 along the length direction.
 其余与实施例1同。The rest is the same as in Example 1.
 实施例4：如图37-图44 、X导光板12位于Y导光板11上方，X-PCBA10及Y-PCBA13均位于导光板下方，Y-PCBA13为光接收PCBA，X-PCBA10为光发射PCBA，Y-PCBA13位于沿X导光板12长度方向的两端之间，本实施例采用：Y-PCBA13位于沿X导光板12长度方向的两端之间的中部附近。 Embodiment 4: As shown in Figures 37 to 44 , the X light guide plate 12 is located above the Y light guide plate 11, X-PCBA10 and Y-PCBA13 are both located below the light guide plate, Y-PCBA13 is a light-receiving PCBA, and X-PCBA10 is a light-emitting PCBA. , the Y-PCBA 13 is located between the two ends along the length direction of the X light guide plate 12 . In this embodiment, the Y-PCBA 13 is located near the middle between the two ends along the length direction of the X light guide plate 12 .
 如图42-图44 、Y-PCBA13上的光敏管10-2位于2个Y向光波导11-1之间的贯穿孔内，2个Y向光波导11-1之间的贯穿孔为Y导板隔光槽11-2，光敏管10-2位于Y导板隔光槽11-2内，也可采用在Y导光板11上，沿Y方向热压的粗糙面，该粗糙面将Y导光板11分隔成多路Y向光波导11-1，并在粗糙面开设粗糙面贯穿孔，光敏管10-2位于糙面贯穿孔（图中未表示）内；Y-PCBA13上的光敏管10-2分别位于2个Y导板隔光槽11-2内（本实施例采用）； As shown in Figure 42-Figure 44 , the photosensitive tube 10-2 on the Y-PCBA13 is located in the through hole between the two Y-direction optical waveguides 11-1, and the through-hole between the two Y-direction optical waveguides 11-1 is Y The light-isolating groove 11-2 of the guide plate and the photosensitive tube 10-2 are located in the light-isolating groove 11-2 of the Y guide plate. The rough surface hot-pressed along the Y direction on the Y light guide plate 11 can also be used. This rough surface will form the Y light guide plate 11. 11 is divided into multiple Y-direction optical waveguides 11-1, and a rough surface through hole is opened on the rough surface, and the photosensitive tube 10-2 is located in the rough surface through hole (not shown in the figure); the photosensitive tube 10- on the Y-PCBA13 2 are respectively located in the two Y-guide plate light-isolating grooves 11-2 (used in this embodiment);
光敏管10-2位于X向光波导12-1的下板面下方，或光敏管10-2位于X向光波导12-1上的通孔内，光入射窗口设置在X向光波导12-1的下板面或设置在X向光波导12-1的通孔内，光敏管10-2通过X向光波导12-1下板面的光入射窗口（图中未表示），与X向光波导12-1光路导通，光入射窗口本实施例采用在X向光波导12-1下板面热压成型N个凹微透镜（也可采用在X向光波导12-1下板面丝印导光油墨），侧LED13-2与Y向光波导11-1的端面一一对应。The photosensitive tube 10-2 is located below the lower plate surface of the X-direction light waveguide 12-1, or the photosensitive tube 10-2 is located in the through hole on the X-direction light waveguide 12-1, and the light incident window is set on the X-direction light waveguide 12-1. The lower plate surface of 1 may be arranged in the through hole of the X-direction optical waveguide 12-1. The photosensitive tube 10-2 passes through the light incident window (not shown in the figure) on the lower plate surface of the X-direction optical waveguide 12-1, and is in contact with the X-direction optical waveguide 12-1. The optical path of the optical waveguide 12-1 is connected, and the light incident window is used. In this embodiment, N concave microlenses are formed by hot pressing on the lower surface of the X-directional optical waveguide 12-1 (it can also be used on the lower surface of the X-directional optical waveguide 12-1 Silk screen light guide ink), the side LED 13-2 corresponds to the end face of the Y-direction optical waveguide 11-1 one by one.
 其余与实施例1同。The rest is the same as in Example 1.
 实施例5：如图45 、X导光板12位于Y导光板11上方，X-PCBA10及Y-PCBA13均位于导光板下方，光发射PCBA由2个Y-PCBA13构成，2个Y-PCBA13分别位于沿长度方向的X导光板12的两端，并位于X导光板12的下方，侧LED13-2发射的光信号从的X向光波导12-1端面向内入射X向光波导12-1。 Embodiment 5: As shown in Figure 45 , the X light guide plate 12 is located above the Y light guide plate 11. Along the two ends of the X-ray guide plate 12 in the length direction and located below the X-ray guide plate 12, the optical signals emitted by the side LEDs 13-2 are incident inwardly into the X-ray waveguide 12-1 from the end faces of the X-ray waveguide 12-1.
 X导光板12被X导板隔光槽12-2分隔成多路沿正X方向布置的X向光波导12-1，侧LED13-2分别位于X向光波导12-1的两端，X-PCBA10为光接收PCBA，X-PCBA10位于Y导光板11沿宽度方向的两端之间的中部附近。The X light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive The PCBA 10 is a light receiving PCBA, and the X-PCBA 10 is located near the middle between the two ends of the Y light guide plate 11 along the width direction.
 其余与实施例1同。The rest is the same as in Example 1.
 以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在发明的保护范围之内。The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. within.
工业实用性Industrial applicability
本发明可广泛应用于PC键盘、薄型的薄膜键盘、薄型的笔记本键盘；薄型的薄膜键盘广泛应用于医疗设备、工控设备等。The invention can be widely used in PC keyboards, thin membrane keyboards, and thin notebook keyboards; thin membrane keyboards are widely used in medical equipment, industrial control equipment, and the like.
序列表自由内容Sequence Listing Free Content
光接收PCBA、光发射PCBA、光发射器、光接收器、电路片、导光板、光开关，键帽1、键盘上壳2、键滑动体3、压缩弹簧4、阻断体5，、导光阻断部5-1、阻断弹力臂5-2、阻断安装面5-3、阻断导光孔5-4构成、Ⅰ导光板6、窗口贯穿孔6-1、Ⅱ导光板7、导光网点7-1、透镜7-2、键盘下壳8、光开关模块9、X-PCBA10、X-PCB板10-1、光敏管10-2、Y导光板11、Y向光波导11-1、Y导板隔光槽11-2、Y上反射膜11-3、Y下反射膜11-4、X导光板12、X向光波导12-1、X导板隔光槽12-2、X上反射膜12-3、X下反射膜12-4、X导板发射孔12-3、Y-PCBA13、Y-PCBA13、Y-PCB板13-1、侧LED13-2。Light receiving PCBA, light transmitting PCBA, light transmitter, light receiver, circuit chip, light guide plate, light switch, key cap 1, keyboard upper shell 2, key sliding body 3, compression spring 4, blocking body 5, and guide Light blocking part 5-1, blocking elastic arm 5-2, blocking mounting surface 5-3, blocking light guide hole 5-4, I light guide plate 6, window through hole 6-1, II light guide plate 7 , light guide outlets 7-1, lens 7-2, keyboard lower shell 8, optical switch module 9, X-PCBA10, X-PCB board 10-1, photosensitive tube 10-2, Y light guide plate 11, Y-direction optical waveguide 11-1, Y guide plate light isolation groove 11-2, Y upper reflective film 11-3, Y lower reflective film 11-4, X light guide plate 12, X-directional light waveguide 12-1, X guide plate light isolation groove 12-2 , X upper reflective film 12-3, X lower reflective film 12-4, X guide plate emission hole 12-3, Y-PCBA13, Y-PCBA13, Y-PCB board 13-1, side LED13-2.

Claims (11)

  1. 一种交叉光波导光开关模块，包括光发射器、光接收器、电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断；其特征是：所述导光板由Ⅰ导光板6、Ⅱ导光板7构成，其中，所述Ⅱ导光板7由多路Ⅱ光波导构成，所述Ⅰ导光板6由多路Ⅰ光波导构成；成行排列的所述Ⅱ光波导与所述Ⅰ光波导的夹角为&；所述Ⅱ光波导、所述Ⅰ光波导交汇处设置一个所述光开关，所述光开关成行排列。A cross optical waveguide optical switch module includes an optical transmitter, an optical receiver, a circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch. When the optical switch When triggered, the light path between the light transmitter and the light receiver is switched on and off; the characteristic is: the light guide plate is composed of I light guide plate 6 and II light guide plate 7, wherein the II light guide plate 7 is composed of multiple II light The I light guide plate 6 is composed of multiple I optical waveguides; the angle between the II optical waveguides and the I optical waveguides arranged in rows is &; the intersection of the II optical waveguide and the I optical waveguide One of the optical switches is provided, and the optical switches are arranged in rows.
  2. 如权利要求1所述的一种交叉光波导光开关模块，其特征是：所述Ⅰ导光板6为Y导光板11，所述Ⅰ光波导为Y向光波导11-1，所述Ⅱ导光板7为X导光板12，所述Ⅱ光波导为X向光波导12-1；所述光发射器、所述光接收器设置在所述电路片上，所述电路片由Y-PCBA13、X-PCBA10构成，其中，所述X-PCBA10的长度沿所述导光板的长度方向布置，所述Y-PCBA13的长度沿所述导光板的宽度方向布置；所述X-PCBA10为光接收PCBA，所述光接收器于所述X-PCBA10上，所述Y-PCBA13为光发射PCBA，所述光发射器位于所述Y-PCBA13上或所述X-PCBA10为光发射PCBA，所述光发射器于所述X-PCBA10上，所述Y-PCBA13为光接收PCBA，所述光接收器位于所述Y-PCBA13上。A cross optical waveguide optical switch module according to claim 1, characterized in that: the I light guide plate 6 is a Y light guide plate 11, the I optical waveguide is a Y-direction optical waveguide 11-1, and the II guide The light plate 7 is an X light guide plate 12, and the II optical waveguide is an X-directional optical waveguide 12-1; the optical transmitter and the optical receiver are arranged on the circuit chip, and the circuit chip is composed of Y-PCBA13, -PCBA10 is formed, wherein the length of the X-PCBA10 is arranged along the length direction of the light guide plate, and the length of the Y-PCBA13 is arranged along the width direction of the light guide plate; the X-PCBA10 is a light-receiving PCBA, The light receiver is on the X-PCBA10, the Y-PCBA13 is a light-emitting PCBA, the light emitter is located on the Y-PCBA13 or the X-PCBA10 is a light-emitting PCBA, and the light-emitting PCBA is installed on the X-PCBA10, the Y-PCBA13 is a light receiving PCBA, and the light receiver is located on the Y-PCBA13.
  3. 一种交叉光波导光开关模块，包括光发射器、光接收器、电子电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断；其特征是：所述导光板设置有多路光波导，所述光波导上设置有贯穿其板面的多个阻断贯穿孔、多个光转换窗口；所述导光板由Ⅰ导光板6、Ⅱ导光板7构成，其中，所述Ⅰ导光板6的光波导由多路X向光波导12-1构成，所述Ⅱ导光板7的光波导由多路Y向光波导11-1构成；所述X向光波导12-1成行排列，所述Y向光波导11-1与所述X向光波导12-1的夹角为&；所述光转换窗口位于所述阻断贯穿孔内，所述阻断贯穿孔与所述X向光波导12-1、所述Y向光波导11-1光路导通；所述光开关成行排列，所述阻断贯穿孔成行排列，所述X向光波导12-1与所述Y向光波导11-1交汇处设置最多一个所述阻断贯穿孔。A cross optical waveguide optical switch module includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch. When the light When the switch is triggered, the optical path between the light transmitter and the light receiver is switched on and off; its characteristic is: the light guide plate is provided with multiple optical waveguides, and the optical waveguide is provided with multiple blocking penetrations penetrating the plate surface. holes and multiple light conversion windows; the light guide plate is composed of I light guide plate 6 and II light guide plate 7, wherein the optical waveguide of the I light guide plate 6 is composed of multiple X-direction light waveguides 12-1, and the II light guide plate The optical waveguide of the light guide plate 7 is composed of multiple Y-direction optical waveguides 11-1; the X-direction optical waveguides 12-1 are arranged in rows, and the distance between the Y-direction optical waveguide 11-1 and the X-direction optical waveguide 12-1 is The included angle is &; the light conversion window is located in the blocking through hole, and the blocking through hole is in optical path conduction with the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1; so The optical switches are arranged in rows, and the blocking through holes are arranged in rows. At most one blocking through hole is provided at the intersection of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1.
  4. 一种交叉光波导光开关模块，包括光发射器、光接收器、电子电路片、导光板、光开关，其中，光发射器发射的光信号通过光开关与光接收器光路导通，当光开关被触发时，光发射器与光接收器的光路产生通断；其特征是：A cross optical waveguide optical switch module includes an optical transmitter, an optical receiver, an electronic circuit chip, a light guide plate, and an optical switch. The optical signal emitted by the optical transmitter is connected to the optical path of the optical receiver through the optical switch. When the light When the switch is triggered, the optical path between the optical transmitter and the optical receiver is switched on and off; its characteristics are:
    所述导光板由Ⅰ导光板6、Ⅱ导光板7构成，所述Ⅰ导光板6由多路X向光波导12-1构成，所述Ⅱ导光板7由多路Y向光波导11-1构成；所述光开关成行排列，所述X向光波导12-1与所述Y向光波导11-1交汇处设置最多一个所述光开关；所述X向光波导12-1成行排列，所述Y向光波导11-1与所述X向光波导12-1的夹角为&；所述光开关的光转换窗口使所述X向光波导12-1、所述Y向光波导11-1光路导通；当所述光开关被触发时，所述光转换窗口与所述X向光波导12-1的光路或所述Y向光波导11-1的光路被阻隔。The light guide plate is composed of I light guide plate 6 and II light guide plate 7. The I light guide plate 6 is composed of multiple X-direction light waveguides 12-1, and the II light guide plate 7 is composed of multiple Y-direction light waveguides 11-1. Composed; the optical switches are arranged in rows, and at most one optical switch is provided at the intersection of the X-direction optical waveguide 12-1 and the Y-direction optical waveguide 11-1; the X-direction optical waveguides 12-1 are arranged in rows, The angle between the Y-direction optical waveguide 11-1 and the X-direction optical waveguide 12-1 is &; the optical conversion window of the optical switch makes the X-direction optical waveguide 12-1 and the Y-direction optical waveguide The optical path 11-1 is turned on; when the optical switch is triggered, the optical conversion window and the optical path of the X-directional optical waveguide 12-1 or the optical path of the Y-directional optical waveguide 11-1 are blocked.
  5. 如权利要求4所述的一种交叉光波导光开关模块，其特征是：所述电路片由Y-PCBA13、X-PCBA10构成，其中，所述X-PCBA10的长度沿所述导光板的长度方向布置，所述Y-PCBA13的长度沿所述导光板的宽度方向布置；A cross optical waveguide light switch module as claimed in claim 4, characterized in that: the circuit chip is composed of Y-PCBA13 and X-PCBA10, wherein the length of the X-PCBA10 is along the length of the light guide plate direction, the length of the Y-PCBA13 is arranged along the width direction of the light guide plate;
    所述光接收器与所述X向光波导12-1光路导通，所述光发射器与所述Y向光波导11-1光路导通或所述光接收器与所述Y向光波导11-1光路导通，所述光发射器与所述X向光波导12-1光路导通；The optical receiver is connected to the optical path of the X-direction optical waveguide 12-1, the optical transmitter is connected to the optical path of the Y-direction optical waveguide 11-1, or the optical receiver is connected to the Y-direction optical waveguide 11-1. The optical path 11-1 is connected, and the light transmitter and the X-directional optical waveguide 12-1 are connected;
    所述光接收器设置在所述X-PCBA10上，所述光发射器设置在所述Y-PCBA13上或所述光接收器设置在所述Y-PCBA13上，所述光发射器设置在所述X-PCBA10上。The light receiver is set on the X-PCBA10, the light transmitter is set on the Y-PCBA13, or the light receiver is set on the Y-PCBA13, and the light emitter is set on the Y-PCBA13. Above X-PCBA10.
  6. 如权利要求2或5所述的一种交叉光波导光开关模块，其特征是：所述光发射器为侧LED13-2，所述光接收器为光敏管10-2，所述Y导光板11位于所述X导光板12上方，所述X-PCBA10为光接收PCBA，所述Y-PCBA13为光发射PCBA，所述X-PCBA10上的所述光敏管10-2位于2个所述X向光波导12-1之间的贯穿孔内，所述光敏管10-2通过所述Y向光波导11-1的光入射窗口与Y向光波导11-1光路导通，所述Y-PCBA13上的侧LED13-2发出的光入射所述X向光波导12-1。A cross optical waveguide light switch module as claimed in claim 2 or 5, characterized in that: the light emitter is a side LED 13-2, the light receiver is a photosensitive tube 10-2, and the Y light guide plate 11 is located above the X light guide plate 12, the X-PCBA 10 is a light-receiving PCBA, the Y-PCBA 13 is a light-emitting PCBA, and the photosensitive tube 10-2 on the X-PCBA 10 is located on the two X In the through hole between the Y-directional optical waveguides 12-1, the photosensitive tube 10-2 is connected to the optical path of the Y-directional optical waveguide 11-1 through the light incident window of the Y-directional optical waveguide 11-1. The light emitted by the side LED 13-2 on the PCBA 13 is incident on the X-directional light waveguide 12-1.
  7. 如权利要求2或5所述的一种交叉光波导光开关模块，其特征是：所述光发射器为侧LED13-2，所述光接收器为光敏管10-2，所述Y导光板11位于所述X导光板12上方，所述X-PCBA10为光发射PCBA，所述Y-PCBA13为光接收PCBA，所述X-PCBA10上的侧LED13-2发出的光入射所述Y向光波导11-1的端面，所述Y-PCBA13上的所述光敏管10-2位于X向光波导12-1的贯穿孔内，所述Y-PCBA13位于X导光板12沿长度方向的两端之间。A cross optical waveguide light switch module as claimed in claim 2 or 5, characterized in that: the light emitter is a side LED 13-2, the light receiver is a photosensitive tube 10-2, and the Y light guide plate 11 is located above the X light guide plate 12, the X-PCBA 10 is a light-emitting PCBA, the Y-PCBA 13 is a light-receiving PCBA, and the light emitted by the side LED 13-2 on the X-PCBA 10 is incident on the Y-direction light. The end face of the waveguide 11-1, the photosensitive tube 10-2 on the Y-PCBA 13 is located in the through hole of the X-ray waveguide 12-1, the Y-PCBA 13 is located at both ends of the X-light guide plate 12 along the length direction between.
  8. 如权利要求2或5所述的一种交叉光波导光开关模块，其特征是：所述光接收器为光敏管10-2，所述X导光板12位于所述Y导光板11上方，所述Y-PCBA13为光接收PCBA，所述X-PCBA10为光发射PCBA，所述Y-PCBA13位于沿X导光板12长度方向的两端之间，所述Y-PCBA13上的所述光敏管10-2位于2个所述Y向光波导11-1之间的贯穿孔内，所述光敏管10-2通过所述X向光波导12-1的光入射窗口，与所述X向光波导12-1光路导通。A cross optical waveguide light switch module as claimed in claim 2 or 5, characterized in that: the light receiver is a photosensitive tube 10-2, and the X light guide plate 12 is located above the Y light guide plate 11, so The Y-PCBA13 is a light-receiving PCBA, and the X-PCBA10 is a light-emitting PCBA. The Y-PCBA13 is located between the two ends along the length direction of the X light guide plate 12. The photosensitive tube 10 on the Y-PCBA13 -2 is located in the through hole between the two Y-direction optical waveguides 11-1. The photosensitive tube 10-2 passes through the light incident window of the X-direction optical waveguide 12-1 and is connected to the X-direction optical waveguide. 12-1 The optical path is turned on.
  9. 如权利要求2或5所述的一种交叉光波导光开关模块，其特征是：所述光发射器为侧LED13-2，所述X导光板12位于所述Y导光板11上方，所述光发射PCBA由2个所述Y-PCBA13构成，2个所述Y-PCBA13分别位于沿长度方向的X导光板12的两端，所述侧LED13-2发射的光信号向内入射所述X向光波导12-1；所述X导光板12被分隔成多路沿正X方向布置的所述X向光波导12-1，所述侧LED13-2分别位于所述X向光波导12-1的两端，所述X-PCBA10为光接收PCBA，所述X-PCBA10位于Y导光板11沿宽度方向的两端之间。A cross optical waveguide light switch module as claimed in claim 2 or 5, characterized in that: the light emitter is a side LED 13-2, the X light guide plate 12 is located above the Y light guide plate 11, and the The light-emitting PCBA is composed of two Y-PCBAs 13. The two Y-PCBAs 13 are respectively located at both ends of the X light guide plate 12 along the length direction. The light signals emitted by the side LEDs 13-2 are incident into the X The X-direction light waveguide 12-1; the X-direction light guide plate 12 is divided into multiple X-direction light waveguides 12-1 arranged along the positive X direction, and the side LEDs 13-2 are respectively located in the X-direction light waveguide 12- At both ends of 1, the X-PCBA 10 is a light-receiving PCBA, and the X-PCBA 10 is located between the two ends of the Y light guide plate 11 along the width direction.
  10. 如权利要求2或5所述的一种交叉光波导光开关模块，其特征是：所述光发射器为侧LED13-2，所述光接收器为光敏管10-2，所述光敏管10-2与所述Y向光波导11-1一一对应，所述侧LED13-2与所述Y向光波导11-1一一对应。A cross optical waveguide light switch module as claimed in claim 2 or 5, characterized in that: the light emitter is a side LED 13-2, the light receiver is a photosensitive tube 10-2, and the photosensitive tube 10 -2 corresponds to the Y-direction optical waveguide 11-1 one-to-one, and the side LED 13-2 corresponds to the Y-direction optical waveguide 11-1 one-to-one.
  11. 如权利要求1或2或3或4或5所述的一种交叉光波导光开关模块，其特征是：所述光开关模块还包括电路片、光发射器，所述电路片由光接收PCBA、光发射PCBA构成，所述电路片位于X导光板12或Y导光板11及其组合的下方，所述光发射器从Y向光波导11-1的端面入射Y向光波导11-1。A cross optical waveguide optical switch module as claimed in claim 1 or 2 or 3 or 4 or 5, characterized in that: the optical switch module further includes a circuit chip and an optical transmitter, and the circuit chip is composed of a light receiving PCBA , light-emitting PCBA, the circuit chip is located below the X light guide plate 12 or the Y light guide plate 11 and their combination, and the light emitter is incident on the Y-direction optical waveguide 11-1 from the end surface of the Y-direction optical waveguide 11-1.
PCT/CN2023/098119 2022-06-03 2023-06-02 Crossed optical waveguide light switch module WO2023232146A1 (en)

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CN1780147A (en) * 2004-11-17 2006-05-31 陈�峰 Photoelectric and photoconductive inputting device
CN101256911A (en) * 2008-04-11 2008-09-03 精模电子科技（深圳）有限公司 Luminous keyboard with light conducting plate
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