WO2021000795A1 - 触控光笔及投影*** - Google Patents

触控光笔及投影*** Download PDF

Info

Publication number
WO2021000795A1
WO2021000795A1 PCT/CN2020/098487 CN2020098487W WO2021000795A1 WO 2021000795 A1 WO2021000795 A1 WO 2021000795A1 CN 2020098487 W CN2020098487 W CN 2020098487W WO 2021000795 A1 WO2021000795 A1 WO 2021000795A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
touch
transmitting sheet
pen
sheet
Prior art date
Application number
PCT/CN2020/098487
Other languages
English (en)
French (fr)
Inventor
吴超
康瑞
张贤鹏
余新
李屹
Original Assignee
深圳光峰科技股份有限公司
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 深圳光峰科技股份有限公司 filed Critical 深圳光峰科技股份有限公司
Publication of WO2021000795A1 publication Critical patent/WO2021000795A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]

Definitions

  • the utility model relates to the field of optical projection, in particular to a touch light pen and a projection system.
  • the related art touch control system includes a screen, a projector for projecting images on the screen, a camera for acquiring the images, a computer for processing the images, and a touch control element for touch control.
  • the purpose of the utility model is to provide a touch light pen which is convenient to adjust the light output area and a projection system with high touch reliability.
  • the present invention provides a touch light pen, which includes a light pen body with an accommodating space, a touch light source arranged in the accommodating space, and a light-transmitting sheet arranged on the light pen body.
  • the touch light source projects a beam of light on the light-transmitting sheet
  • the touch light pen further includes a light output adjustment component installed between the touch light source and the light-transmitting sheet, and the light output adjustment The component adjusts the light-emitting area of the light beam through the light-transmitting sheet according to the pressure received by the light-transmitting sheet.
  • the light-emitting adjustment assembly includes a light-tight elastic sheet and a retractable light-transmitting sheet; the outer periphery of the elastic sheet is fixed to the light pen body, and the inner periphery of the elastic sheet is connected to the retractable sheet.
  • the light-transmitting sheet is connected, and the side of the retractable light-transmitting sheet away from the elastic sheet is connected to the light-transmitting sheet; the light beam passes through the inner periphery of the elastic sheet and passes through the light-transmitting sheet
  • the retractable light-transmitting sheet forms an angle with the light emitting direction of the touch light source, and the angle is adjusted by pressure to adjust the area of the inner periphery of the elastic sheet.
  • the light-transmitting sheet is made of elastic material, and the pressure deforms the light-transmitting sheet to drive the retractable light-transmitting sheet to shrink or expand to reduce or increase the included angle, thereby Adjust the decrease or increase of the inner peripheral area of the elastic sheet.
  • the geometric center of the retractable light-transmitting sheet is connected to the geometric center of the light-transmitting sheet.
  • the light output adjustment assembly includes a pressure sensor and an aperture
  • the pressure sensor is fixed to the light-transmitting sheet
  • the aperture is fixed to the light pen body
  • the aperture has a light-through hole
  • the light beam is transparent. Projecting on the light-transmitting sheet through the light-transmitting hole; the pressure sensor senses the pressure of the light-transmitting sheet and generates a pressure signal, and adjusts the light-transmitting hole of the diaphragm according to the pressure signal.
  • the light pen body includes a first light pen body part and a second light pen body part connected to each other, the touch light source is arranged on the first light pen body part, and the light-transmitting sheet is arranged on the first light pen body part.
  • the light output adjustment assembly includes a first convex lens fixed to the body of the first light pen and a second convex lens fixed to the body of the second light pen, the first convex lens and the second The convex lenses are spaced apart from each other and arranged opposite to each other. Press the light-transmitting sheet to make the first light pen body and the second light pen body move relative to each other, so as to adjust the gap between the first convex lens and the second convex lens.
  • the light output adjustment assembly further includes an elastic member connected to the first light pen body and the second light pen body at both ends, and the light transmissive sheet is forced to deform the elastic member to control the The relative movement between the first light pen body portion and the second light pen body portion further adjusts the distance between the first convex lens and the second convex lens.
  • the elastic member is a coil spring.
  • the utility model also provides a projection system, which includes a screen and an image acquisition and processing system, and is characterized in that the projection system also includes a touch light pen, the touch light pen includes a light output adjustment component, and the touch light pen and A contact force is generated between the screens, the light output adjustment component adjusts the light output area of the beam under the action of the contact force, the image acquisition and processing system acquires the light output area, and generates a touch control based on the light output area instruction.
  • the projection system further includes a projector installed on the back side of the screen to achieve rear projection.
  • a projector installed on the back side of the screen to achieve rear projection.
  • the touch stylus pen touches the touch screen.
  • Control light is projected from the front side of the screen toward the screen;
  • the image acquisition and processing system includes a camera and a computer electrically connected to the camera, and the camera is installed on the back side of the screen to obtain The image displayed on the screen.
  • the touch light pen of the present invention includes a light pen body with an accommodation space, a touch light source arranged in the accommodation space, a light-transmitting sheet arranged in the light pen body, and a light output adjusting component, so
  • the touch light source projects a light beam to the light-transmitting sheet;
  • the light-emitting adjustment component is installed between the touch light source and the light-transmitting sheet, and the light-emitting adjustment component is subject to the light-transmitting sheet.
  • the pressure adjusts the light-emitting area of the light beam through the light-transmitting sheet, and the light-emitting area of the stylus pen can be controlled by controlling the force of pressing the light-transmitting sheet, so that the light stylus pen is convenient to adjust the light-emitting area.
  • the projection system of the present invention generates touch commands according to the light output area of the light beam projected on the screen by the touch light pen, and the adjustment of the light output area of the light beam needs to be realized by adjusting the force of pressing the touch light pen, which effectively avoids
  • the problems of wrong touch, wrong touch, and insensitive induction, etc. make the projection system have high touch reliability.
  • FIG. 1 is a schematic structural diagram of the first embodiment of the touch light pen of the present invention in an initial state
  • FIG. 2 is a schematic structural diagram of the first embodiment of the present invention in a pressed state
  • FIG. 3 is a schematic structural diagram of the first embodiment of the present invention in a state of maximum pressing
  • FIG. 4 is a schematic structural diagram of the second embodiment of the touch light pen of the present invention.
  • Fig. 5 is a schematic structural diagram of the third embodiment of the stylus pen of the present invention.
  • Figure 6 is a schematic diagram of the structure of the projection system of the present invention.
  • the utility model provides a touch light pen, which comprises a light pen body, a touch light source, a light transmission sheet and a light output adjusting component.
  • the light pen body has an accommodating space, the touch light source is arranged in the accommodating space, and the light-transmitting sheet is arranged on the light pen body; specifically, the touch light source is fixed to the light pen body At one end, the light-transmitting sheet is fixed to the other end of the light pen body, and the light output adjustment component is installed between the touch light source and the light-transmitting sheet.
  • the touch light source projects a light beam to the light-transmitting sheet, and the light beam may be visible light or invisible light, and the light beam is projected outward through the light-emitting adjustment component and the light-transmitting sheet in sequence.
  • the light pen body is an integral structure or a split structure, which can be specifically set according to the needs of the application.
  • the light-emitting adjustment component may be connected to the light-transmitting sheet, or may be spaced apart from the light-transmitting sheet, and the specific positional relationship and connection relationship between the two may be specifically set according to actual applications.
  • “interval setting” refers to setting at a certain distance.
  • the light beam first irradiates the light-emitting adjustment component, and the light-emitting adjustment component adjusts the light-emitting area of the light beam through the light-transmitting sheet according to the pressure on the light-transmitting sheet, so that the The pressing force on the light-transmitting sheet is used to control the light-emitting area of the light beam projected outward.
  • the structure of the light output adjustment component has a variety of optional implementations.
  • three optional options are listed below.
  • the touch light source 2 is provided in the touch light pen body 1, the light-transmitting sheet 3 constitutes the tip part of the touch light pen 100, and the light output adjustment component 4 is located at the light source 2 In the light path of the light beam, the light beam is emitted from the light-transmitting sheet 3 after being adjusted by the light-emitting adjusting component 4.
  • the light-emitting adjustment assembly 4 includes an opaque elastic sheet 41 and a retractable light-transmitting sheet 42; the outer periphery of the elastic sheet 41 is fixed on the inner side of the light pen body 1, and the elastic sheet 41
  • the inner periphery of the retractable light-transmitting sheet 42 is connected to the retractable light-transmitting sheet 42, and the side of the retractable light-transmitting sheet 42 away from the elastic sheet 41 is connected to the light-transmitting sheet 3; further, the retractable light-transmitting sheet 42
  • the geometric center of the transparent sheet 42 is connected to the geometric center of the transparent sheet 3.
  • the retractable light-transmitting sheet 42 has an inverted cone structure, and the retractable light-transmitting sheet 42 forms an angle ⁇ with the light emitting direction of the touch light source 2, and the light-transmitting sheet is adjusted and pressed 3 to adjust the included angle ⁇ , thereby adjusting the retractable state of the retractable light-transmitting sheet 42.
  • the light-transmitting sheet 3 is made of an elastic material, and the light-transmitting sheet is deformed by pressure to drive the retractable light-transmitting sheet 42 to shrink or expand to reduce the included angle ⁇ Or increase, so as to adjust the decrease or increase of the inner peripheral area of the elastic sheet 41.
  • the light beam passes through the inner periphery of the elastic sheet 41, and then is projected on the light-transmitting sheet 3 through the retractable light-transmitting sheet 42, and exits through the light-transmitting sheet 3.
  • This structure can change the area of the inner peripheral edge of the elastic sheet 41 within a certain range by controlling the retractable light-transmitting sheet 42 to be in different retracted states, thereby changing the area that passes through the inner periphery Luminous flux.
  • the light-transmitting sheet 3 is a retractable light-transmitting sheet, and the retractable light-transmitting sheet is connected to the retractable light-transmitting sheet 42. The retractable light-transmitting sheet is moved closer to the touch panel under the action of pressing force.
  • the direction of the pen body 1 shrinks, and at the same time the contraction drives the retractable light-transmitting sheet 42 to expand.
  • the elastic sheet 41 Under the action of the retractable light-transmitting sheet 42, the elastic sheet 41 is compressed so that its inner periphery becomes larger.
  • the light output area of the light beam of the sheet 41 becomes larger, that is, the light flux increases, and the emitted light spot becomes larger.
  • the adjustment range of the included angle ⁇ can be specifically set according to actual use conditions.
  • the range of the included angle ⁇ is preferably 0 to 90 degrees.
  • the initial area of the inner periphery of the elastic sheet 41 may be zero. That is, in the unused state, no light beam will be emitted even if the touch light source 2 is turned on, and only when the user presses it on a touch object such as a screen, the light beam will be emitted.
  • the elastic sheet 41 is made of light-shielding material, and the light irradiated on the elastic sheet 41 is absorbed, which provides conditions for the elastic sheet 41 to shield the light beam; the elastic sheet 41 protects the
  • the containing space is divided into a first optical cavity 101 and a second optical cavity 102, the touch light source 2 is located in the first optical cavity 101, and the light beam generated by the touch light source 2 fills the entire first optical cavity 101.
  • the transparent sheet 3 and the retractable transparent sheet 42 are located in the second optical cavity 102.
  • the light stylus 100 When the light stylus 100 is in the initial state, the light-transmitting sheet 3 is not pressed on the pressing plane, the retractable light-transmitting sheet 42 is completely closed, the angle ⁇ is 0°, and the The elastic sheet 41 is closed with the expandable light-transmitting sheet 42. At this time, the area of the inner peripheral edge of the elastic sheet 41 is 0, and the elastic sheet 41 separates the first optical cavity 101 and the second The optical cavity 102 is completely separated, and the light beams in the first optical cavity 101 are all shielded by the elastic sheet 41, that is, no light beams are projected outward.
  • the light-transmitting sheet 3 When the light-transmitting sheet 3 is pressed on the pressing plane, the light-transmitting sheet 3 is elastically deformed to drive the retractable light-transmitting sheet 42 to move so that the elastic sheet 41 opens a light-transmitting channel 410.
  • the retractable light-transmitting sheet 42 When the pressing force continues to increase, the retractable light-transmitting sheet 42 is continuously expanded toward the direction of the light pen body 1 to drive the elastic sheet 41 to shrink continuously, and the angle of the included angle ⁇ is continuously increased , The light transmission channel 410 increases accordingly; and when the pressing force is continuously reduced, the retractable light transmission sheet 42 continuously shrinks away from the light pen body 1, so as to drive the elastic sheet 41 continuously Unfolding, and the angle of the included angle ⁇ continues to decrease, and the light transmission channel 410 decreases accordingly.
  • Part of the light beam enters the second optical cavity 102 through the light-transmitting channel 410, and sequentially passes through the retractable light-transmitting sheet 42 and the light-trans
  • the light-transmitting sheet 3 When the light-transmitting sheet 3 is pressed to be parallel to the pressing plane, the light-transmitting sheet 3 reaches the maximum pressing state, and the angle ⁇ is 90°. At this time, the retractable light-transmitting sheet 42 In contact with the light-transmitting sheet 3, and the elastic member 41 reaches the maximum compressed state, which maximizes the area of the inner circumference of the elastic sheet 41, that is, the light-transmitting channel 410 reaches the maximum, and The light output area of the light beam projected outward then reaches the maximum.
  • the angle of the included angle ⁇ is controlled, thereby controlling the size of the light-transmitting channel 410, and then adjusting the light beam to pass through the light-emitting adjustment
  • the transmittance of the component 4 effectively controls the light output area of the light beam projected outward to adjust the light flux.
  • the inner periphery of the elastic sheet in addition to preset the area of the inner periphery of the elastic sheet to 0, as a second alternative of the first embodiment, in the natural state (without applying pressure), can also be The initial area of is set to a certain threshold, which is greater than zero. That is, when it is not pressed, the area of the inner periphery of the elastic sheet is the set threshold, which limits the size of the light spot in the initial state.
  • the principle of adjusting the light-emitting area in the second alternative is the same as the above-mentioned first alternative. The principle of the area is the same, and will not be repeated here. When the user presses it to a touch object such as a screen, the greater the pressing force, the larger the light-emitting area, and the larger the light spot generated.
  • the light output adjustment assembly 4a includes a pressure sensor 41a, an aperture controller 42a, and an aperture 43a.
  • the pressure sensor 41a is fixed to the light-transmitting sheet 3, and the aperture controller 42a is fixed to In the light pen body 1, the diaphragm 43 a is fixed to the light pen body 1.
  • the position of the pressure sensor is not limited.
  • the pressure sensor 41a is arranged on the light-transmitting sheet. The geometric center position of slice 3.
  • the aperture 43a divides the housing space 10a into a first optical cavity 101a and a second optical cavity 102a, the touch light source 2 is located in the first optical cavity 101a, and the touch The light beam generated by the light source 2 fills the entire first optical cavity 101a; the aperture 43a has a light through hole 430a, and the first light cavity 101a communicates with the second light cavity 102a through the light through hole 430a The light beam is projected on the light-transmitting sheet 3 through the light-passing hole 430a.
  • the stylus pen 100a when the stylus pen 100a is in the initial state, the light-transmitting sheet 3 is not pressed on the pressing plane, and the pressure sensor 41a has no pressure signal. At this time, the The aperture 43a is completely closed, that is, the light-passing hole 430a is completely closed, the aperture of the light-passing hole 430a is 0, and the light beams in the first optical cavity 101a are all shielded by the aperture 43a, that is, there is nothing. The beam is projected outward.
  • the pressure sensor 41a collects the pressure signal of the light-transmitting sheet 3 and transmits it to the diaphragm controller 42a.
  • the diaphragm controller 42a The signal controls the aperture 43a to open the light-passing hole 430a, and part of the light beam located in the first optical cavity 101a enters the second light cavity 102a through the light-passing hole 430a, and passes through the light-passing hole 430a.
  • the light sheet 3 is projected outward; the greater the pressure on the light-transmitting sheet 3, the larger the aperture of the light-passing hole 430a, and the larger the light exit area of the light beam passing through the aperture 43a, that is, the light flux increases ,
  • the emitted light spot becomes larger, on the contrary, the smaller the pressing force on the light-transmitting sheet 3 is, the light emitting area becomes smile, the luminous flux decreases and the light spot becomes smaller.
  • the pressure sensor 41a senses the pressure received by the light-transmitting sheet 3 and generates a pressure signal to transmit to the diaphragm controller 42a.
  • the diaphragm controller 42a adjusts the pressure signal according to the received pressure signal.
  • the aperture size of the light-passing hole 430a of the diaphragm 43a is adjusted so as to adjust the amount of transmission of the light beam through the light output adjusting component 4, and effectively control the light output area of the light beam projected outward.
  • the aperture of the light-passing hole in addition to presetting the aperture of the light-passing hole to 0, as the second alternative of the second embodiment, in a natural state (without applying pressure), can also be set Set to a certain threshold, which is greater than zero. That is, when it is not pressed, the aperture of the light-passing hole is the set threshold, thereby limiting the size of the light spot in the initial state.
  • the principle of adjusting the light-emitting area in the second alternative is the same as that of the first alternative. The principle is the same and will not be repeated here. When the user presses it to a touch object such as a screen, the greater the pressing force, the larger the light emitting area, and the larger the light spot generated.
  • the light pen body 1b includes a first light pen body portion 11b and a second light pen body portion 12b that are spaced apart from each other, and the touch light source 2 is provided on the first On the light pen body portion 11b, the light-transmitting sheet 3 is provided on the second light pen body portion 12b, and the light emission adjusting assembly 4b is provided on the first light pen body portion 11b and the second light pen body portion 12b. between.
  • the light output adjusting assembly 4b includes a first convex lens 41b and a second convex lens 42b connected to each other; the first convex lens 41b is fixed to the first light pen body portion 11b, the second convex lens 42b and the first convex lens 41b Spaced apart and set directly opposite each other.
  • the light output adjusting component 4b partitions the receiving space 10b into a first optical cavity 101b, a second optical cavity 102b, and a third optical cavity 103b; the first optical cavity 101b is located in the first optical cavity 101b.
  • the light beam generated by the touch light source 2 fills the entire first optical cavity 101b;
  • the second optical cavity 102b is located between the first convex lens 41b and the Between the second convex lens 42b;
  • the third optical cavity 103b is located between the second convex lens 42b and the light-transmitting sheet 3.
  • the first convex lens 41b and the second convex lens 42b respectively have the function of light converging. Further, the first convex lens 41b and the second convex lens 42b are both oriented toward the light emitting direction of the touch light source 2.
  • the light-transmitting sheet 3 protrudes.
  • the first light pen body portion 11b and the second light pen body portion 12b are relatively moved to adjust the first convex lens 41b and the The distance between the second convex lenses 42b is used to adjust the area size of the light beam converging on the transparent sheet 3.
  • the light-emitting adjustment assembly 4b further includes the first light pen body portion 11b and The elastic member 43b between the second light pen body portion 12b; specifically, two ends of the elastic member 43b are respectively connected to the first light pen body 11b and the second light pen body portion 12b.
  • the elastic member 43b is a coil spring. When one end of the light-transmitting sheet 3 is pressed, the elastic member 43b shrinks. When the pressing force is greater, the elastic member 43b shrinks more. The closer the distance between the first convex lens 41b and the second convex lens 42b, the larger the light exit area of the beam projected outwards. Conversely, when the pressing force is reduced, the light exit area of the beam projected outwards is smaller.
  • the light-transmitting sheet 3 is stressed and deforms the elastic member 43b to control the first light pen body portion 11b and
  • the relative movement between the second light pen body 12b further adjusts the distance between the first convex lens 41b and the second convex lens 42b; in practical applications, the light-transmitting sheet 3 is pressed against the pressing plane
  • the area of the light beam converged on the light-transmitting sheet 3 is changed, and the contact is effectively improved.
  • the light stylus pen of the above three embodiments can adjust the light output area of the beam projected outward by controlling the force of pressing the light-transmitting sheet, so that the light stylus pen is convenient to adjust the light output area, so that the touch The light pen is convenient to use and has a good user experience.
  • the present invention also provides a projection system 200, which includes a screen 5, an image acquisition and processing system 6, the touch stylus 100 and a projector 7 of the present invention.
  • the screen 5 serves as a pressing plane of the touch light pen 100, and a contact force is generated between the touch light pen 100 and the screen 5, and the touch
  • the light pen 100 projects the light beam from the front side of the screen 5 toward the screen 5; the light output adjustment component of the light stylus pen 100 adjusts the light output area of the light beam under the action of the contact force, and the image acquisition and The processing system 6 obtains the light-emitting area, and generates a touch command according to the light-emitting area.
  • the projector 7 is installed on the back side of the screen 5 to realize back projection.
  • the image acquisition and processing system 6 includes a camera 61 and a computer 62 electrically connected to the camera 61.
  • the camera 61 is installed at The back side of the screen 5; the camera 61 is used as an image acquisition device to acquire images displayed on the screen 5, and the computer 62 is used as an image processing device, which analyzes and processes the images through positioning touch software, and Make the touch response function according to the analysis result.
  • the projector 7 is electrically connected to the computer 62 and the display screen is projected from the back side of the screen 5 to the screen 5;
  • the touch stylus 100 is from the front of the screen 5 Side press on the screen 5, and project a light beam from the side to the screen 5, the light beam is projected on the screen 5 to produce a light spot;
  • the camera 61 is electrically connected to the computer, and from the The back side of the screen 5 acquires an image with a light spot in the display area (that is, the display area of the screen 5), and then sends the image to the computer 62, and the computer 62 has the center coordinates of the light spot in the image , Area size, residence time, etc., and make multiple touch response functions such as mouse clicks and pen writing based on the analysis results.
  • the calibration can be achieved in two forms: automatic calibration and manual calibration, among which:
  • Automatic calibration that is, using the checkerboard or circular grid method, by hitting a regular-shaped checkerboard or circular grid on the screen 5, the camera 61 is used to obtain the image of the screen 5, and the computer 62 automatically After detecting the corner points of the checkerboard or the center of the circle that meet the specified number and distribution, the camera parameters of the camera 61 and the matrix parameters of the perspective transformation are calculated and obtained, and the calibration is completed.
  • Manual calibration that is, by drawing squares or circles with a known distribution to the screen 5 one by one, the user clicks all the correct positions one by one with the stylus pen 100, and then calculates and obtains the camera parameters and perspective transformation of the camera 61 Complete the calibration of the matrix parameters.
  • mouse mode or pen mode the user can select mouse mode or pen mode:
  • the computer 62 needs to obtain the coordinates and stay time of the light spot in the image to complete functions such as left-click, slide, double-click, and right-click.
  • the computer 62 In the pen mode, the computer 62 not only needs the coordinates and stay time of the light spot in the image, but also needs to analyze the area of the light spot to complete more operation functions. Specifically, under the maximum light spot area, long press is the eraser/ Writing mode switching; long press in the small light spot writing mode to switch the pen type; in writing or eraser mode, the larger the light spot, the thicker the handwriting or the larger the eraser surface.
  • the projector 7 and the camera 61 are both located on the back side of the screen 5, which can effectively avoid the user’s body or other objects from occluding the light spot during the touch use process, and at the same time avoid the interference of external light. , which greatly reduces the problems of false touch, false touch, and insensitive induction, so that the reliability of the projection system 200 is high; in addition, in practical applications, the projector 7 and the camera 61 are installed on the screen The back side of 5, after the two are installed, will not move due to the influence of external factors, thus avoiding repeated calibration during use, so that the accuracy and sensitivity of the touch are high, and the User experience.
  • the positional relationship between the projector and the camera is not limited.
  • the projector 7 and the camera 61 are separately set up on the screen 5.
  • the camera can be embedded in the projector, so that the camera and the projector become an integrated structure, which effectively improves the accuracy of the camera's calibration of the screen image. Ensure the reliability of the projection system, and further improve the accuracy and sensitivity of touch.
  • a touch command is generated according to the light output area of the light beam projected by the stylus pen 100 on the screen 5, and the light beam
  • the adjustment of the light output area needs to be realized by adjusting the force of pressing the stylus pen 100, which effectively avoids the problems of mistouch, mistouch, and insensitive sensing, so that the projection system has high touch reliability; at the same time, through
  • the control of the pressing force allows the user to draw lines of different thickness that are more in line with writing habits or produce different ranges of eraser erase.
  • the pen mode switching and other operations can be completed in accordance with the pressing time, making the projection system 200 touch More convenient, making the user experience better.
  • the touch light pen of the present invention includes a light pen body with an accommodation space, a touch light source arranged in the accommodation space, a light-transmitting sheet arranged in the light pen body, and a light output adjusting component, so
  • the touch light source projects a light beam to the light-transmitting sheet;
  • the light-emitting adjustment component is installed between the touch light source and the light-transmitting sheet, and the light-emitting adjustment component is subject to the light-transmitting sheet.
  • the pressure adjusts the light-emitting area of the light beam through the light-transmitting sheet, and the light-emitting area of the stylus pen can be controlled by controlling the force of pressing the light-transmitting sheet, so that the light stylus pen is convenient to adjust the light-emitting area.
  • the projection system of the present invention generates touch commands according to the light output area of the light beam projected on the screen by the touch light pen, and the adjustment of the light output area of the light beam needs to be realized by adjusting the force of pressing the touch light pen, which effectively avoids
  • the problems of wrong touch, wrong touch, and insensitive induction, etc. make the projection system have high touch reliability.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种触控光笔，其包括具有收容空间的光笔本体、设置于收容空间内的触控光光源以及设置于光笔本体的透光片，触控光光源向透光片投射光束；触控光笔还包括装设于触控光光源和透光片之间的出光调节组件，出光调节组件根据透光片受到的压力大小调节光束经透光片的出光面积大小。一种投影***，其包括屏幕、图像获取与处理***和触控光笔，触控光笔包括出光调节组件，触控光笔与屏幕之间产生接触力，出光调节组件在接触力的作用下调节光束的出光面积，图像获取与处理***获取出光面积，并根据出光面积生成触控指令。与相关技术相比，本方案的触控光笔便于调整出光面积，本方案的投影***触控可靠性高。

Description

触控光笔及投影*** 【技术领域】
本实用新型涉及光学投影领域，尤其涉及一种触控光笔及投影***。
【背景技术】
随着投影机应用领域的不断拓展，其友好便捷的交互需求与日俱增。传统的交互方式一般通过遥控、鼠标或带有红外发射和接收器的特制电子白板等实现，对大尺寸大空间的应用场景并不是很方便。为了适应灵活多样的应用场景，近几年出现了很多针对正面投影的正投触控***。
相关技术的触控***包括屏幕、用以向所述屏幕投射画面的投影仪、用以获取所述画面的摄像头、用以处理所述画面的计算机以及用以触控控制的触控件。
然而，相关技术中，经常会出现误触、错触和感应不灵敏等问题，大大降低了所述正投触控***的触控可靠性低。
因此，实有必要提供一种新的触控光笔及投影***解决上述技术问题。
【实用新型内容】
本实用新型的目的在于提供一种便于调整出光面积的触控光笔及触控可靠性高的投影***。
为达到上述目的，本实用新型提供一种触控光笔，其包括具有收容空间的光笔本体、设置于所述收容空间内的触控光光源以及设置于所述光笔本体的透光片，所述触控光光源向所述透光片投射光束，其特征在于，所述触控光笔还包括装设于所述触控光光源和所述透光片之间的出光调节组件，所述出光调节组件根据所述透光片受到的压力大小调节所述光束经所述透光片的出光面积大小。
优选的，所述出光调节组件包括不透光的弹性片和可收张透光片；所述弹性片的外周缘固定于所述光笔本体，所述弹性片的内周缘与所述可收 张透光片连接，所述可收张透光片远离所述弹性片的一侧与所述透光片连接；所述光束从所述弹性片的内周缘透过，并经所述透光片出射，所述可收张透光片与所述触控光源的出光方向形成夹角，通过压力调整所述夹角的大小以调节所述弹性片的内周缘的面积大小。
优选的，所述透光片为弹性材料制成，压力使所述透光片产生形变，以带动所述可收张透光片收缩或展开以使所述夹角减小或增大，从而调节所述弹性片的内周缘面积的减小或增大。
优选的，所述可收张透光片的几何中心位置与所述透光片的几何中心处连接。
优选的，所述出光调节组件包括压力传感器和光阑，所述压力传感器固定于所述透光片，所述光阑固定于所述光笔本体；所述光阑具有通光孔，所述光束透过所述通光孔投射在所述透光片上；所述压力传感器感应所述透光片受到的压力大小并产生压力信号，根据该压力信号调节所述光阑的通光孔大小。
优选的，所述光笔本体包括相互连接的第一光笔本体部和第二光笔本体部，所述触控光光源设置于所述第一光笔本体部上，所述透光片设置于所述第二光笔本体部上；所述出光调节组件包括固定于所述第一光笔本体部的第一凸透镜以及固定于所述第二光笔本体部的第二凸透镜，所述第一凸透镜与所述第二凸透镜相互间隔且正对设置，按压所述透光片，使所述第一光笔本体部与所述第二光笔本体部作相对运动，以调节所述第一凸透镜与所述第二凸透镜之间的距离，从而调节聚合在所述透光片的光束的面积大小。优选的，所述出光调节组件还包括两端分别连接所述第一光笔本体和所述第二光笔本体部的弹性件，所述透光片受力并使所述弹性件产生形变以控制所述第一光笔本体部与所述第二光笔本体部之间的相对运动，进而调节所述第一凸透镜与所述第二凸透镜之间的距离。
优选的，所述弹性件为螺旋弹簧。
本实用新型还提供一种投影***，其包括屏幕和图像获取与处理***，其特征在于，所述投影***还包括触控光笔，所述触控光笔包括出光调节 组件，所述触控光笔与所述屏幕之间产生接触力，所述出光调节组件在所述接触力的作用下调节光束的出光面积，所述图像获取与处理***获取所述出光面积，并根据所述出光面积生成触控指令。
优选的，所述投影***还包括投影仪装设于所述屏幕的背侧用以实现背面投影的投影仪，所述触控光笔与所述屏幕接触时，所述触控光笔将所述触控光从所述屏幕的正侧朝向所述屏幕投射；所述图像获取与处理***包括摄像头和与所述摄像头电连接的计算机，所述摄像头装设于所述屏幕的背侧，用以获取所述屏幕显示的图像。
与相关技术相比，本实用新型的触控光笔包括具有收容空间的光笔本体、设置于所述收容空间内的触控光光源、设置于所述光笔本体的透光片以及出光调节组件，所述触控光光源向所述透光片投射光束；所述出光调节组件装设于所述触控光光源和所述透光片之间，所述出光调节组件根据所述透光片受到的压力大小调节所述光束经所述透光片的出光面积大小，通过控制按压所述透光片的力度便能控制所述触控光笔的出光面积，使得所述触控光笔便于调整出光面积。本实用新型的投影***根据触控光笔投射在屏幕的光束的出光面积生成触控指令，而所述光束的出光面积的调整需要通过调整按压所述触控光笔的力度的来实现，有效地避免了误触、错触和感应不灵敏等问题，使得所述投影***触控可靠性高。
【附图说明】
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，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它的附图，其中：
图1为本实用新型触控光笔的实施例一处于初始状态的结构示意图；
图2为本实用新型触控光笔的实施例一处于按压状态的结构示意图；
图3为本实用新型触控光笔的实施例一处于最大按压状态的结构示意图；
图4为本实用新型触控光笔的实施例二的结构示意图；
图5为本实用新型触控光笔的实施例三的结构示意图；
图6为本实用新型投影***的结构示意图。
【具体实施方式】
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，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它实施例，都属于本实用新型保护的范围。
本实用新型提供一种触控光笔，其包括光笔本体、触控光光源、透光片以及出光调节组件。
所述光笔本体具有收容空间，所述触控光光源设置于所述收容空间内，所述透光片设置于所述光笔本体上；具体的，所述触控光光源固定于所述光笔本体其中一端，所述透光片固定于所述光笔本体另外一端，而所述出光调节组件装设于所述触控光光源和所述透光片之间。
所述触控光光源向所述透光片投射光束，所述光束可以为可见光或不可见光，所述光束依次透过所述出光调节组件和所述透光片向外投射。
值得一提的是，所述光笔本体为一体结构，也可以为分体结构，其可以根据应用的需要进行具体的设置。
进一步的，所述出光调节组件可以与所述透光片连接，也可以与所述透光片间隔设置，两者之间的具***置关系和连接关系可以根据实际应用进行具体的设置。其中，“间隔设置”是指间隔一段距离设置。
上述结构中，所述光束首先照射在所述出光调节组件，所述出光调节组件根据所述透光片受到的压力大小调节所述光束经所述透光片的出光面积大小，使得可以通过控制对所述透光片的按压力度以达到控制向外投射的光束的出光面积。
而在实际应中，所述出光调节组件的结构形式具有多种可选的实施方案，为了方便理解所述出光调节组件控制所述光束的出光面积的原理，下 面将举出三种可选的实施方案展开说明：
实施方式一
请参阅图1-3所示，触控光笔本体1内设置有触控光光源2，透光片3构成了触控光笔100的笔头部分，出光调节组件4位于触控光光源2所发出的光束的光路中，光束经所述出光调节组件4调节后从所述透光片3射出。
本实施方式中，所述出光调节组件4包括不透光的弹性片41和可收张透光片42；所述弹性片41的外周缘固定于所述光笔本体1内侧，所述弹性片41的内周缘与所述可收张透光片42连接，所述可收张透光片42远离所述弹性片41的一侧与所述透光片3连接；进一步的，所述可收张透光片42的几何中心位置与所述透光片3的几何中心处连接。
进一步的，所述可收张透光片42呈倒锥形结构，所述可收张透光片42与所述触控光源2的出光方向形成夹角α，通过调整按压所述透光片3的压力以调整所述夹角α，从而调节所述可收张透光片42的收张状态。
更进一步的，所述透光片3为弹性材料制成，通过压力使所述透光片产生形变，以带动所述可收张透光片42收缩或展开以使所述夹角α减小或增大，从而调节所述弹性片41的内周缘面积的减小或增大。
上述结构中，所述光束从所述弹性片41的内周缘透过，然后通过所述可收张透光片42投射在所述透光片3上，并经所述透光片3向外出射，该结构可以通过控制所述可收张透光片42处于不同的收张状态，从而在一定范围内改变所述弹性片41的内周缘的面积的大小，进而改变通过内周缘透过的光通量。更具体的，所述透光片3为可伸缩透光片，可伸缩透光片与可收张透光片42连接，可伸缩透光片在按压力的作用下，向靠近所述触控笔本体1的方向收缩，收缩的同时带动可收张透光片42展开，在可收张透光片42的作用下，弹性片41被压缩从而使其内周缘变大，而通过所述弹性片41的光束的出光面积变大，即光通量增加，出射的光斑变大。
值得一提的是，所述夹角α的调整范围可以根据实际使用的情况进行具体的设置，比如，在本实施方式一中，为了增大所述出光调节组件4对 光束的出光面积的调节范围，将所述夹角α的范围优选为0到90度。
作为该实施方式一的第一可选方案，在自然状态下(未施加按压力的情况下)，所述弹性片41的内周缘的初始面积可以为0。即未使用状态下，即使打开触控光光源2也不会有光束射出，仅仅当使用者将其按压至屏幕等触控对象时，才有光束出射。下面根据各种情况展开说明该可选的方案：
在说明之前应该指出，所述弹性片41为遮光材料制成，照射在所述弹性片41上的光被吸收，为所述弹性片41遮蔽光束提供了条件；所述弹性片41将所述收容空间分隔成第一光腔101和第二光腔102，所述触控光光源2位于所述第一光腔101，所述触控光光源2产生的光束充满整个所述第一光腔101，所述透光片3和所述可收张透光片42位于所述第二光腔102。
当所述触控光笔100处于初始状态时，所述透光片3未被按压在按压平面上，所述可收张透光片42完全闭合，所述夹角α为0°，而所述弹性片41随所述可收张透光片42闭合，此时，所述弹性片41的内周缘的面积为0，而所述弹性片41将所述第一光腔101和所述第二光腔102完全分开，处于所述第一光腔101的光束全部被所述弹性片41遮蔽，即无光束向外投射。
当所述透光片3被按压在按压平面上时，所述透光片3发生弹性形变，以带动所述可收张透光片42运动使所述弹性片41打开一个透光通道410。在按压力度不断增加时，使所述可收张透光片42向靠近所述光笔本体1的方向不断展开，以带动所述弹性片41不断收缩，且所述夹角α的角度不断增大，所述透光通道410的随之增大；而在按压力度不断减小时，所述可收张透光片42向远离所述光笔本体1的方向不断收缩，以带动所述弹性片41不断展开，且所述夹角α的角度不断减小，所述透光通道410的随之减小。部分所述光束通过该透光通道410进入到所述第二光腔102，并依次透过所述可收张透光片42和所述透光片3向外投射。
当所述透光片3被按压到与按压平面平行时，所述透光片3达到最大按压状态，所述夹角α的角度为90°，此时，所述可收张透光片42与所 述透光片3相抵接，而所述弹性件41达到最大的被压缩状态，实现了所述弹性片41的内周延的面积最大化，即使得所述透光通道410达到最大，而向外投射的所述光束的出光面积随之达到了最大值。
上述结构中，通过控制向按压平面按压所述透光片3的力度，以控制所述夹角α的角度大小，从而控制透光通道410的大小，进而调整所述光束透过所述出光调节组件4的透过量，有效地控制向外投射的所述光束的出光面积，以调节光通量。
当然，除了将弹性片内周缘的面积预设为0外，作为该实施方式一的第二可选方案，在自然状态下(未施加按压力的情况下)，也可以将弹性片的内周缘的初始面积设定为一定的阈值，该阈值大于0。即在未按压时，弹性片的内周缘的面积大小为设定的阈值，限定了初始状态下光斑的尺寸，该第二可选方案调整出光面积的原理与上述的第一可选方案调整出光面积的原理相同，在此不再赘述，当使用者将其按压至屏幕等触控对象时，按压力越大，出光面积越大，从而使得产生的光斑越大。
实施方式二
请参阅图4所示，所述出光调节组件4a包括压力传感器41a、光阑控制器42a和光阑43a，所述压力传感器41a固定于所述透光片3，所述光阑控制器42a固定于所述光笔本体1，所述光阑43a固定于所述光笔本体1。
值得一提的是，压力传感器设置的位置是不限的，为了保证压力传感器能够更将灵敏地感应透光片的压力，在本实施方式二中，所述压力传感器41a设于所述透光片3的几何中心位置。
本实施方式中，所述光阑43a将所述收容空间10a分隔成第一光腔101a和第二光腔102a，所述触控光光源2位于所述第一光腔101a，所述触控光光源2产生的光束充满整个所述第一光腔101a；所述光阑43a具有通光孔430a，所述第一光腔101a通过所述通光孔430a与所述第二光腔102a连通，所述光束透过所述通光孔430a投射在所述透光片3上。
作为该实施方式二的第一可选方案，当触控光笔100a处于初始状态 时，所述透光片3未被按压在按压平面上，所述压力传感器41a无压力信号，此时，所述光阑43a完全闭合，即所述通光孔430a被完全关闭，所述通光孔430a的孔径为0，处于所述第一光腔101a的光束全部被所述光阑43a遮蔽，即无所述光束向外投射。
当所述透光片3被按压在按压平面上时，所述压力传感器41a采集所述透光片3的压力信号并传送给所述光阑控制器42a，所述光阑控制器42a根据压力信号控制所述光阑43a打开所述通光孔430a，位于所述第一光腔101a的部分所述光束通过该通光孔430a进入到所述第二光腔102a，并透过所述透光片3向外投射；对所述透光片3的按压力度越大，所述通光孔430a的孔径随之增大，通过所述光阑43a的光束的出光面积变大，即光通量增加，出射的光斑变大，反之，对所述透光片3的按压力度越小，出光面积变笑，则光通量减少，光斑变小。
上述结构中，所述压力传感器41a感应所述透光片3受到的压力大小并产生压力信号传送至所述光阑控制器42a，所述光阑控制器42a根据接收的所述压力信号调节所述光阑43a的通光孔430a的孔径大小，从而调整所述光束透过所述出光调节组件4的透过量，有效地控制向外投射的所述光束的出光面积。
当然，除了将通光孔的孔径预设为0外，作为该实施方式二的第二可选方案，在自然状态下(未施加按压力的情况下)，也可以将通光孔的孔径设定为一定的阈值，该阈值大于0。即在未按压时，通光孔的孔径为设定的阈值，从而限定了初始状态下光斑的尺寸，该第二可选方案调整出光面积的原理与上述的第一可选方案调整出光面积的原理相同，在此不再赘述，当使用者将其按压至屏幕等触控对象时，按压力越大，出光面积越大，从而使得产生的光斑越大。
实施方式三
请参阅图5所示，在本实施方式中，所述光笔本体1b包括相互间隔设置的第一光笔本体部11b和第二光笔本体部12b，所述触控光光源2设置 于所述第一光笔本体部11b上，所述透光片3设置于所述第二光笔本体部12b上，所述出光调节组件4b设于所述第一光笔本体部11b和所述第二光笔本体部12b之间。
所述出光调节组件4b包括相互连接的第一凸透镜41b和第二凸透镜42b；所述第一凸透镜41b固定于所述第一光笔本体部11b，所述第二凸透镜42b与所述第一凸透镜41b相互间隔且正对设置。
在本实施方式中，所述出光调节组件4b将所述收容空间10b分隔成第一光腔101b、第二光腔102b和第三光腔103b；所述第一光腔101b位于所述第一凸透镜41b与所述触控光光源2之间，所述触控光光源2产生的光束充满整个所述第一光腔101b；所述第二光腔102b位于所述第一凸透镜41b和所述第二凸透镜42b之间；所述第三光腔103b位于所述第二凸透镜42b和所述透光片3之间。
所述第一凸透镜41b和所述第二凸透镜42b分别具有光线聚合的功能，进一步的，所述第一凸透镜41b和所述第二凸透镜42b均沿所述触控光光源2的出光方向朝向所述透光片3凸出。当所述触控光光源2被打开时，处于所述第一光腔101b的光束透过所述第一凸透镜41b时发生第一次的光线聚合，经过第一次光线聚合后的光束进入所述第二光腔102b后透过所述第二凸透镜42b时发生第二次光线聚合，经过第二次光线聚合后的光束进入所述第三光腔103b，并透过所述透光片3向外投射。
上述结构中，通过将所述透光片3按压在按压平面，使所述第一光笔本体部11b与所述第二光笔本体部12b作相对运动，以调节所述第一凸透镜41b与所述第二凸透镜42b之间的距离，进而以调节聚合在所述透光片3的光束的面积大小。
更进一步的，为了使所述第一凸透镜41b与所述第二凸透镜42b之间的距离的调节更加方便，优选的，所述出光调节组件4b还包括设置于所述第一光笔本体部11b和所述第二光笔本体部12b之间的弹性件43b；具体的，所述弹性件43b的两端分别与所述第一光笔本体11b和所述第二光笔本体部12b连接。
需要说明的是，所述弹性件43b为螺旋弹簧，当按压所述透光片3一端时，所述弹性件43b收缩，当按压力度越大，所述弹性件43b收缩量越多，所述第一凸透镜41b和所述第二凸透镜42b的距离越近，向外投射的光束的出光面积也越大，反之，当按压力度减小时，向外投射的光束的出光面积越小。
通过所述弹性件43b的设置，通过将所述透光片3按压在按压平面，所述透光片3受力并使所述弹性件43b产生形变以控制所述第一光笔本体部11b与所述第二光笔本体部12b之间的相对运动，进而调节所述第一凸透镜41b与所述第二凸透镜42b之间的距离；在实际应用中，通过所述透光片3按压在按压平面的力度的大小，以调节所述第一凸透镜41b与所述第二凸透镜42b之间的距离大小，从而改变聚合在所述透光片3上的光束的面积大小，有效地提高了所述触控光笔100b操作的便利性及对出光面积调节的灵活性。
需要说明的是，上述三种实施方式的触控光笔均能通过控制对透光片按压的力度，以调整向外投射的光束的出光面积，使得触控光笔便于调整出光面积，从而使得触控光笔的使用便利且使用体验好。
请参阅图6所示，本实用新型还提供一种投影***200，其包括屏幕5、图像获取与处理***6、本实用新型所述的触控光笔100和投影仪7。
所述触控光笔100向所述屏幕5接触时，所述屏幕5作为所述触控光笔100的按压平面，所述触控光笔100与所述屏幕5之间产生接触力，所述触控光笔100将所述光束从所述屏幕5的正侧朝向所述屏幕5投射；所述触控光笔100的出光调节组件在所述接触力的作用下调节光束的出光面积，所述图像获取与处理***6获取所述出光面积，并根据所述出光面积生成触控指令。
所述投影仪7装设于所述屏幕5的背侧用以实现背面投影所述图像获取与处理***6包括摄像头61和与所述摄像头61电连接的计算机62，所述摄像头61装设于所述屏幕5的背侧；所述摄像头61作为图像获取装置，用以获取所述屏幕5显示的图像，所述计算机62作为图像处理装置，其通 过定位触控软件对图像进行分析处理，并根据分析的结果做出触控响应功能。
为了方便理解，下面对所述投影***200的工作原理展开说明：
在本实施方式中，所述投影仪7与所述计算机62电连接并将显示画面从所述屏幕5的背侧投射至所述屏幕5；所述触控光笔100从所述屏幕5的正侧按压在所述屏幕5上，并从该侧向所述屏幕5投射的光束，所述光束投射在所述屏幕5上产生光斑；所述摄像头61与所述计算机电连接，并从所述屏幕5的背侧获取显示区域内(即所述屏幕5的显示区域)的具有光斑的图像，然后将该图像发送至所述计算机62中，所述计算机62对该图像中的光斑的中心坐标、面积大小、停留时间等进行分析，并根据分析的结果做出鼠标点击和画笔书写等多种触控响应功能。
需要说明的是，所述摄像头61在获取光斑图像前，需要对该摄像头61对需要检测的屏幕5进行标定，可采用自动标定和手动标定两种形式实现标定，其中：
自动标定，即采用棋盘格或圆形网格法，通过向所述屏幕5打出形状规则的棋盘格或圆形网格，使用所述摄像头61获取所述屏幕5的图像，所述计算机62自动检测出满足规定数量和分布的棋盘格角点或圆圈中心后，计算并获取所述摄像头61的摄像参数以及透视变换的矩阵参数，完成标定。
手动标定，即通过逐一向所述屏幕5打出分布已知的方格或圆圈，使用者用所述触控光笔100逐一点击所有正确位置后，再计算获取所述摄像头61的摄像参数以及透视变换的矩阵参数，完成标定。
进一步的，在使用过程中，使用者可以选择鼠标模式或画笔模式：
在鼠标模式下，所述计算机62需要获取图像中的光斑的坐标与停留时长，以完成左击，滑动，双击和右击等功能。
在画笔模式下，所述计算机62不仅需要图像中的光斑的坐标与停留时长，还需要分析该光斑的面积，以完成更多的操作功能，具体为，最大光斑面积下，长按为橡皮/书写模式切换；小光斑书写模式下长按为画笔类型 切换；书写或橡皮模式下，光斑越大笔迹越粗或橡皮擦除面越大。
上述结构中，所述投影仪7和所述摄像头61均位于所述屏幕5的背侧，可以有效避免用户在触控使用过程中身体或其他物体对光斑的遮挡，同时避免了外界光照的干扰，大大减少了误触、错触和感应不灵敏等问题，使得所述投影***200的可靠性高；另外，而在实际应用中，所述投影仪7和所述摄像头61安装在所述屏幕5的背侧，在该两者完成安装后，不会因外界因素影响而产生位置的挪动，从而避免了在使用过程出现反复标定的情况，从而使得触控的准确度和灵敏度高，保证了使用者的操作体验。
需要说明的是，投影仪和摄像头的位置关系是不限的，比如，在本实施方式中，如图6所示，所述投影仪7和所述摄像头61分别单独设立在所述屏幕5的背侧；当然，为了进一步提高投影仪和摄像头安装的稳定性，可以将摄像头嵌入投影仪中，使摄像头和投影仪成为一体结构，有效地提高了摄像头对屏幕的图像进行标定时的准确性，保证了投影***的可靠性，且进一步提高触控的准确度和灵敏度。
值得一提的是，上述结构中，所述触控光笔100在所述投影***200的应用时，根据触控光笔100投射在屏幕5的光束的出光面积生成触控指令，而所述光束的出光面积的调整需要通过调整按压所述触控光笔100的力度的来实现，有效地避免了误触、错触和感应不灵敏等问题，使得所述投影***触控可靠性高；同时，通过按压力度的控制，使得使用者可以画出更符合书写习惯的不同粗细的线条或产生不同范围的橡皮擦除，同时配合按压时间也可完成画笔的模式切换等操作，使得投影***200的触控更加方便，使得使用者的体验更佳。
与相关技术相比，本实用新型的触控光笔包括具有收容空间的光笔本体、设置于所述收容空间内的触控光光源、设置于所述光笔本体的透光片以及出光调节组件，所述触控光光源向所述透光片投射光束；所述出光调节组件装设于所述触控光光源和所述透光片之间，所述出光调节组件根据所述透光片受到的压力大小调节所述光束经所述透光片的出光面积大小，通过控制按压所述透光片的力度便能控制所述触控光笔的出光面积，使得 所述触控光笔便于调整出光面积。本实用新型的投影***根据触控光笔投射在屏幕的光束的出光面积生成触控指令，而所述光束的出光面积的调整需要通过调整按压所述触控光笔的力度的来实现，有效地避免了误触、错触和感应不灵敏等问题，使得所述投影***触控可靠性高。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (10)

  1. 一种触控光笔，其包括具有收容空间的光笔本体、设置于所述收容空间内的触控光光源以及设置于所述光笔本体的透光片，所述触控光光源向所述透光片投射光束，其特征在于，所述触控光笔还包括装设于所述触控光光源和所述透光片之间的出光调节组件，所述出光调节组件根据所述透光片受到的压力大小调节所述光束经所述透光片的出光面积大小。
  2. 根据权利要求1所述的触控光笔，其特征在于，所述出光调节组件包括不透光的弹性片和可收张透光片；所述弹性片的外周缘固定于所述光笔本体，所述弹性片的内周缘与所述可收张透光片连接，所述可收张透光片远离所述弹性片的一侧与所述透光片连接；所述光束从所述弹性片的内周缘透过，并经所述透光片出射，所述可收张透光片与所述触控光源的出光方向形成夹角，通过压力调整所述夹角的大小以调节所述弹性片的内周缘的面积大小。
  3. 根据权利要求2所述的触控光笔，其特征在于，所述透光片为弹性材料制成，压力使所述透光片产生形变，以带动所述可收张透光片收缩或展开以使所述夹角减小或增大，从而调节所述弹性片的内周缘面积的减小或增大。
  4. 根据权利要求3所述的触控光笔，其特征在于，所述可收张透光片的几何中心位置与所述透光片的几何中心处连接。
  5. 根据权利要求1所述的触控光笔，其特征在于，所述出光调节组件包括压力传感器和光阑，所述压力传感器固定于所述透光片，所述光阑固定于所述光笔本体；所述光阑具有通光孔，所述光束透过所述通光孔投射在所述透光片上；所述压力传感器感应所述透光片受到的压力大小并产生压力信号，根据该压力信号调节所述光阑的通光孔大小。
  6. 根据权利要求1所述的触控光笔，其特征在于，所述光笔本体包括相互连接的第一光笔本体部和第二光笔本体部，所述触控光光源设置于所述第一光笔本体部上，所述透光片设置于所述第二光笔本体部上；所述出 光调节组件包括固定于所述第一光笔本体部的第一凸透镜以及固定于所述第二光笔本体部的第二凸透镜，所述第一凸透镜与所述第二凸透镜相互间隔且正对设置，按压所述透光片，使所述第一光笔本体部与所述第二光笔本体部作相对运动，以调节所述第一凸透镜与所述第二凸透镜之间的距离，从而调节聚合在所述透光片的光束的面积大小。
  7. 根据权利要求6所述的触控光笔，其特征在于，所述出光调节组件还包括两端分别连接所述第一光笔本体和所述第二光笔本体部的弹性件，所述透光片受力并使所述弹性件产生形变以控制所述第一光笔本体部与所述第二光笔本体部之间的相对运动，进而调节所述第一凸透镜与所述第二凸透镜之间的距离。
  8. 根据权利要求7所述的触控光笔，其特征在于，所述弹性件为螺旋弹簧。
  9. 一种投影***，其包括屏幕和图像获取与处理***，其特征在于，所述投影***还包括触控光笔，所述触控光笔包括出光调节组件，所述触控光笔与所述屏幕之间产生接触力，所述出光调节组件在所述接触力的作用下调节光束的出光面积，所述图像获取与处理***获取所述出光面积，并根据所述出光面积生成触控指令。
  10. 根据权利要求9所述的投影***，其特征在于，所述投影***还包括投影仪装设于所述屏幕的背侧用以实现背面投影的投影仪，所述触控光笔与所述屏幕接触时，所述触控光笔将所述触控光从所述屏幕的正侧朝向所述屏幕投射；所述图像获取与处理***包括摄像头和与所述摄像头电连接的计算机，所述摄像头装设于所述屏幕的背侧，用以获取所述屏幕显示的图像。
PCT/CN2020/098487 2019-07-03 2020-06-28 触控光笔及投影*** WO2021000795A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201921027966.9 2019-07-03
CN201921027966.9U CN210006018U (zh) 2019-07-03 2019-07-03 触控光笔及投影***

Publications (1)

Publication Number Publication Date
WO2021000795A1 true WO2021000795A1 (zh) 2021-01-07

Family

ID=69310373

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/098487 WO2021000795A1 (zh) 2019-07-03 2020-06-28 触控光笔及投影***

Country Status (2)

Country Link
CN (1) CN210006018U (zh)
WO (1) WO2021000795A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210006018U (zh) * 2019-07-03 2020-01-31 深圳光峰科技股份有限公司 触控光笔及投影***
CN111522474B (zh) * 2020-04-20 2023-11-07 歌尔光学科技有限公司 触控结构和触控***
CN113848659B (zh) * 2021-09-26 2023-11-10 京东方科技集团股份有限公司 光擦除组件、书写***及其控制方法
CN113885720B (zh) * 2021-10-13 2024-01-30 Tcl华星光电技术有限公司 触控发生器、光触控***以及触控方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101963871A (zh) * 2010-10-21 2011-02-02 广州视源电子科技有限公司 基于识别红外点光源的光学触控***及其实现方法
US20120287041A1 (en) * 2011-04-15 2012-11-15 Saint Louis University Input device
CN102968198A (zh) * 2012-09-28 2013-03-13 友达光电股份有限公司 触控笔
CN102999188A (zh) * 2013-01-06 2013-03-27 友达光电股份有限公司 一种用于触控面板的光学输入设备
CN210006018U (zh) * 2019-07-03 2020-01-31 深圳光峰科技股份有限公司 触控光笔及投影***

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101963871A (zh) * 2010-10-21 2011-02-02 广州视源电子科技有限公司 基于识别红外点光源的光学触控***及其实现方法
US20120287041A1 (en) * 2011-04-15 2012-11-15 Saint Louis University Input device
CN102968198A (zh) * 2012-09-28 2013-03-13 友达光电股份有限公司 触控笔
CN102999188A (zh) * 2013-01-06 2013-03-27 友达光电股份有限公司 一种用于触控面板的光学输入设备
CN210006018U (zh) * 2019-07-03 2020-01-31 深圳光峰科技股份有限公司 触控光笔及投影***

Also Published As

Publication number Publication date
CN210006018U (zh) 2020-01-31

Similar Documents

Publication Publication Date Title
WO2021000795A1 (zh) 触控光笔及投影***
US10620712B2 (en) Interactive input system and method
CN101231450B (zh) 多点及物体触摸屏装置及多点触摸的定位方法
US9582119B2 (en) Interactive input system and method
US6979087B2 (en) Display system with interpretable pattern detection
JP2011216088A (ja) タッチ検出投影像を有する投影システム
US20140354602A1 (en) Interactive input system and method
US20140139668A1 (en) Projection capture system and method
KR20110005737A (ko) 광학 베즐을 가진 대화형 입력 시스템
US10831288B2 (en) Projector, projection system, and detection light radiator
CN104423731A (zh) 坐标检测设备、坐标检测的方法及电子信息板***
JP2011128991A (ja) 座標入力装置およびその制御方法
KR101375056B1 (ko) 적외선펜의 좌표를 인식하는 터치스크린시스템
CN103092357A (zh) 一种扫描定位的实现方法及投影键盘装置
KR101359731B1 (ko) 반사부를 이용한 터치인식 시스템
KR101430334B1 (ko) 표시 시스템
KR20040014763A (ko) 레이저와 카메라를 이용한 포인팅장치
JP2006012039A (ja) プレゼンテーションシステム
TWI521413B (zh) 光學式觸控裝置
US20170357336A1 (en) Remote computer mouse by camera and laser pointer
JP2003069767A (ja) 表示システムおよび表示プログラム
CN203276195U (zh) 利用光学笔的光学触控***装置
US9239635B2 (en) Method and apparatus for graphical user interface interaction on a domed display
CN207992664U (zh) 交互式投影光学***及交互式投影光学设备
KR200389840Y1 (ko) 레이저와 카메라를 이용한 포인팅장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20834894

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20834894

Country of ref document: EP

Kind code of ref document: A1