CN102446036A - Object sensing device - Google Patents
Object sensing device Download PDFInfo
- Publication number
- CN102446036A CN102446036A CN2011102826652A CN201110282665A CN102446036A CN 102446036 A CN102446036 A CN 102446036A CN 2011102826652 A CN2011102826652 A CN 2011102826652A CN 201110282665 A CN201110282665 A CN 201110282665A CN 102446036 A CN102446036 A CN 102446036A
- Authority
- CN
- China
- Prior art keywords
- luminescence unit
- unit
- fluorescent lifetime
- image sensing
- output power
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000004020 luminiscence type Methods 0.000 claims description 158
- 238000009826 distribution Methods 0.000 claims description 63
- 238000005286 illumination Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 230000008676 import Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Image Input (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses an object sensing device which comprises an indicating plane, a first image sensing unit, a first light-emitting unit, a second light-emitting unit and a control unit. The first image sensing unit is arranged on a first side of the indication plane. The first light-emitting unit is arranged on the second side of the indication plane and is away from the first image sensing unit by a first distance. The second light-emitting unit is arranged on the second side of the indication plane and is away from the first image sensing unit by a second distance, and the second distance is larger than the first distance. The control unit controls the first image sensing unit to sense a first image related to the indication plane within a first exposure time, controls the first light emitting unit to emit light within the first exposure time to form a first light field intensity, and controls the second light emitting unit to emit light within the first exposure time to form a second light field intensity, wherein the second light field intensity is greater than the first light field intensity. Therefore, the object sensing device of the invention can provide uniform light field intensity of the image sensing unit.
Description
Technical field
The present invention relates to an object sensing device, particularly relates to an image sensing element to provide a uniform light intensity of the object field sensing device.
Background technology
Since present consumption electronic products all be with light, thin, short, little be the direction of design, therefore, do not had the space on the product and held like traditional input tools such as mouse, keyboard, pointer.Along with the contactor control device development of technology; In various consumption electronic products; For example (Personal Digital Assistant PDA) waits product to use the instrument of contactor control device as its data input widely for display, all-in-one (All in One), mobile phone, personal digital assistant.In addition, under contactor control device reaches its maturity, the electronic installation that has large scale and multi-point touch technology will become following main flow.At present, optical touch-control device is compared alternate manner, like resistance-type, condenser type, ultrasonic formula or projection image's formula etc., more low cost and the advantage that more is prone to reach is arranged.
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of the optical touch-control device 1 of prior art.As shown in Figure 1, optical touch-control device 1 comprises indication plane 10, image sensing unit 12, the first luminescence unit 14a, the second luminescence unit 14b, LGP 16 and control module 18.Image sensing unit 12 is arranged at the corner on indication plane 10.The first luminescence unit 14a and the second luminescence unit 14b are arranged at the two ends of LGP 16 respectively.The first luminescence unit 14a and image sensing unit 12 is at a distance of first distance B, 1, the second luminescence unit 14b and image sensing unit 12 second distance D2 apart, and second distance D2 is as shown in Figure 1 greater than first distance B 1.In other words, the first luminescence unit 14a is near image sensing unit 12, and the second luminescence unit 14b is away from image sensing unit 12.Control module 18 is electrically connected on image sensing unit 12, the first luminescence unit 14a and the second luminescence unit 14b.
When using optical touch-control device 1, control module 18 controls the first luminescence unit 14a with identical size of current and the second luminescence unit 14b is simultaneously luminous in identical fluorescent lifetime.At this moment, the light that the first luminescence unit 14a and the second luminescence unit 14b send gets into from the two ends of LGP 16 respectively, and indicates the direction on planes 10 via LGP 16 guiding.When the user utilizes object (for example, finger or pointer) on indication plane 10 during indicating positions, object will cover the first luminescence unit 14a and the second luminescence unit 14b sees through the part light that LGP 16 is launched.Then, control module 18 control image sensing units 12 sensings are about the side AB on indication plane 10, the image of AC.The image information that control module 18 is sensed according to image sensing unit 12 again calculates the indicated position coordinates of object or other article information.
Please refer to Fig. 2, Fig. 2 is the image illumination and the side AB on indication plane 10, the graph of a relation of AC of image sensing unit 12 sensings.If the fluorescent lifetime of the first luminescence unit 14a and the second luminescence unit 14b and output power (by the size of current decision of input) are all identical, then the distribution of light intensity that produced of the first luminescence unit 14a and the second luminescence unit 14b also can be identical.As shown in Figure 1; Because the distance between the first luminescence unit 14a and the second luminescence unit 14b and the image sensing unit 12 is inequality; If the first luminescence unit 14a and the second luminescence unit 14b produce identical distribution of light intensity, the image uneven illumination that then can cause image sensing unit 12 to be sensed.As shown in Figure 2, image sensing unit 12 senses the image illumination of the side AB on indication plane 10, demonstrates the great image illumination curve of high low head, and this uneven image illumination can influence the quality of image that is sensed, and makes the sensing accuracy reduce.
Summary of the invention
The present invention is to solve the technical problem: in order to compensate for deficiencies of the prior art, to provide an image sensing element to provide a uniform light intensity of the object field sensing device.
Object sensing apparatus of the present invention adopts following technical scheme:
The object sensing means comprises indicating plane, a first image sensing unit, a first light emitting unit, a second light-emitting unit and a control unit.The first image sensing unit disposed on a first side flat and instructions.The first light emitting unit is disposed on the second side of the plane indicated with the first image sensing element a first distance, and the second side opposite the first side.The second light emitting unit is disposed on the second side of the plane indicated with the first image sensing element a second distance apart, and the second distance is greater than the first distance.The control unit is electrically connected to the first image sensing unit, a first light emitting unit and the second light emitting unit.The control unit controls the first image sensing unit within the first exposure time for the indication of sensing a first image plane to control the first light emitting unit emits light at the first exposure time to form a first laser intensity, and controls the second light-emitting unit within the exposure time of the first light intensity to form a second light field, and the field intensity of the second light intensity greater than the first light field.
Said first luminescence unit has first output power; Said second luminescence unit has second output power; Set first fluorescent lifetime and second fluorescent lifetime in said first time shutter; It is luminous in said first fluorescent lifetime that said control module is controlled said first luminescence unit; And it is luminous in said second fluorescent lifetime to control said second luminescence unit, and said first distribution of light intensity is by said first output power and the decision of said first fluorescent lifetime, and said second distribution of light intensity is by said second output power and the decision of said second fluorescent lifetime.
When said first output power equaled said second output power, said second fluorescent lifetime was greater than said first fluorescent lifetime.
When said first fluorescent lifetime equaled said second fluorescent lifetime, said second output power was greater than said first output power.
Said first luminescence unit and said second luminescence unit are respectively light emitting diodes.
Said object sensing apparatus also comprises LGP, is arranged at said second side on said indication plane, and said first luminescence unit and said second luminescence unit are arranged at two ends of said LGP respectively.
Said object sensing apparatus also comprises second image sensing unit; Be electrically connected on said control module; Said second image sensing unit is arranged at said first side on said indication plane and with respect to said first image sensing unit; Said first luminescence unit and said second image sensing unit are at a distance of the 3rd distance; Said second luminescence unit and said second image sensing unit are at a distance of the 4th distance; Said the 3rd distance is greater than said the 4th distance, and said control module is controlled said second image sensing unit, and sensing is about second image on said indication plane in second time shutter, and it is luminous to form the 3rd distribution of light intensity in said second time shutter to control said first luminescence unit; And it is luminous to form the 4th distribution of light intensity in said second time shutter to control said second luminescence unit, and said the 3rd distribution of light intensity is greater than said the 4th distribution of light intensity.
Said first luminescence unit has first output power; Said second luminescence unit has second output power; Set the 3rd fluorescent lifetime and the 4th fluorescent lifetime in said second time shutter; It is luminous in said the 3rd fluorescent lifetime that said control module is controlled said first luminescence unit; And it is luminous in said the 4th fluorescent lifetime to control said second luminescence unit, and said the 3rd distribution of light intensity is by said first output power and the decision of said the 3rd fluorescent lifetime, and said the 4th distribution of light intensity is by said second output power and the decision of said the 4th fluorescent lifetime.
When said first output power equaled said second output power, said the 3rd fluorescent lifetime was greater than said the 4th fluorescent lifetime.
When said the 3rd fluorescent lifetime equaled said the 4th fluorescent lifetime, said first output power was greater than said second output power.
According to the above aspect, an object of the present invention the sensing means has at least the following benefits and advantages: The object of the present invention a sensing device using a second light-emitting unit (from the first image sensing unit, by far) the formation of the second light field strength greater than the first light emitting element (the image sensing unit from a first close by) the formation of a first light field intensity, to provide a first image sensing unit uniform light field intensity.Thus, the first image sensing unit of the image sensed more uniform illumination, to ensure that the first image sensing unit sensed image quality, so that the accuracy of the sensing object to be promoted.
Description of drawings
Fig. 1 is the synoptic diagram of the optical touch-control device of prior art;
Fig. 2 is the image illumination of image sensing unit sensing and the graph of a relation of the side on indication plane;
Fig. 3 is the synoptic diagram of the object sensing apparatus of one embodiment of the invention;
Fig. 4 is the image illumination of the first image sensing unit sensing and the graph of a relation of the side on indication plane;
Fig. 5 is the graph of a relation of time shutter, input current and the fluorescent lifetime of one embodiment of the invention;
Fig. 6 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention;
Fig. 7 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention;
Fig. 8 is the synoptic diagram of the object sensing apparatus of another embodiment of the present invention;
Fig. 9 is the image illumination of the second image sensing unit sensing and the graph of a relation of the side on indication plane;
Figure 10 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention;
Figure 11 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention;
Figure 12 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention.
Wherein, description of reference numerals is following:
1 optical touch-control device 3,3 ' object sensing apparatus
10,30 indication planes, 12 image sensing units
14a, the 34a first luminescence unit 14b, 34b second luminescence unit
16,36 LGPs, 18,38 control modules
The 32a first image sensing unit 32b second image sensing unit
T0-t7 time I1, I1 ' first electric current
I2, the I2 ' second electric current D1 first distance
D2 second distance D3 the 3rd distance
D4 the 4th is apart from S1 first side
The S2 second side AB, AC, side
BD
Embodiment
Please refer to Fig. 3, Fig. 3 is the synoptic diagram of the object sensing apparatus 3 of one embodiment of the invention.As shown in Figure 3, object sensing apparatus 3 comprises indication plane 30, the first image sensing unit 32a, the first luminescence unit 34a, the second luminescence unit 34b, LGP 36 and control module 38.In this embodiment, the first image sensing unit 32a is arranged at the corner of the first side S1 on indication plane 30.Luminescence unit 34a, the second luminescence unit 34b and LGP 36 all are arranged at the second side S2 on indication plane 30, and the second side S2 is relative with the first side S1.The first luminescence unit 34a and the second luminescence unit 34b are arranged at two ends of LGP 36 respectively; Light that win luminescence unit 34a and the second luminescence unit 34b send can be respectively got into from the two ends of LGP 36, and via the direction on LGP 36 guiding indication planes 30.
As shown in Figure 3, the first luminescence unit 34a and the first image sensing unit 32a be at a distance of first distance B 1, and the second luminescence unit 34b and first image sensing unit 32a second distance D2 apart, and wherein second distance D2 is greater than first distance B 1.In other words, the first luminescence unit 34a is near the first image sensing unit 32a, and the second luminescence unit 34b is away from the first image sensing unit 32a.Control module 38 is electrically connected on the first image sensing unit 32a, the first luminescence unit 34a and the second luminescence unit 34b.
When practical application, the first image sensing unit 32a can be Charged Coupled Device (Charge-coupled Device, CCD) sensor or complementary metal oxide semiconductor (Complementary Metal-Oxide Semiconductor, a CMOS) sensor.The first luminescence unit 34a and the second luminescence unit 34b can be respectively light emitting diodes.What need explanation is that the quantity of luminescence unit can determine according to practical application, is not exceeded with what Fig. 3 illustrated.Control module 38 can be the controller with data operation/processing capacity.
Generally speaking; The software and hardware assembly of necessity in the time of also can being provided with running in the object sensing apparatus 3; Like display panel, CPU (Central Processing Unit; CPU), internal memory (memory), memory storage (storage device), power supply unit, operating system etc., look practical application and decide.The function of said modules can be reached and used for having common knowledge the knowledgeable easily, gives unnecessary details no longer in detail at this.
When using object sensing apparatus 3, the control module 38 control first luminescence unit 34a and the second luminescence unit 34b are luminous in first time shutter.When the user utilizes object (for example, finger or pointer) on indication plane 30 during indicating positions, object will cover the part light that the first luminescence unit 34a and the second luminescence unit 34b are launched through LGP 36.Simultaneously, the control module 38 control first image sensing unit 32a in this first time shutter sensing about the side AB on indication plane 30, first image of AC.Control module 38 calculates the indicated position coordinates of object or other object information according to first image information that the first image sensing unit 32a is sensed again.
In this embodiment; In first time shutter; The light that the first luminescence unit 34a sends forms first distribution of light intensity through LGP 36, and the light that the second luminescence unit 34b sends forms second distribution of light intensity through LGP 36, and second distribution of light intensity is greater than first distribution of light intensity.In other words; In first time shutter; Formed second distribution of light intensity of the second luminescence unit 34b (distance first image sensing unit 32a person far away) is greater than formed first distribution of light intensity of the first luminescence unit 34a (the nearer person of the distance first image sensing unit 32a); So in first time shutter; Through suitably adjusting first distribution of light intensity and second distribution of light intensity, just can one uniform distribution of light intensity be provided, so that the image illumination that the first image sensing unit 32a is sensed is comparatively even to the first image sensing unit 32a.
Please refer to Fig. 4, Fig. 4 is the image illumination and the side AB on indication plane 30, the graph of a relation of AC of the first image sensing unit 32a sensing.As shown in Figure 4; Suitably adjust the distribution of light intensity and second distribution of light intensity through above-mentioned mode; The image illumination of side AB (the second side S2 just) that can make the first image sensing unit 32a sense indication plane 30 demonstrates image illumination curve comparatively uniformly, and just the image illumination that sensed of the first image sensing unit 32a is comparatively even.
Please refer to Fig. 5, Fig. 5 is the graph of a relation of time shutter, input current and the fluorescent lifetime of one embodiment of the invention.As shown in Figure 5, t0-t3 is the first above-mentioned time shutter.In the first time shutter t0-t3, import first electric current I 1 and give the first luminescence unit 34a, so that the first luminescence unit 34a is luminous with first output power; And import second electric current I 2 and give the second luminescence unit 34b, so that the second luminescence unit 34b is luminous with second output power.In addition, in the first time shutter t0-t3, set the first fluorescent lifetime t0-t1 and the second fluorescent lifetime t0-t2.The first luminescence unit 34a is luminous in the first fluorescent lifetime t0-t1 in control module 38 controls, and it is luminous in the second fluorescent lifetime t0-t2 to control the second luminescence unit 34b.In this embodiment, the first above-mentioned distribution of light intensity can be determined by first output power and the first fluorescent lifetime t0-t1, and the second above-mentioned distribution of light intensity can be by second output power and second fluorescent lifetime t0-t2 decision.
For example, first distribution of light intensity may be defined as the product of first output power and the first fluorescent lifetime t0-t1, and second distribution of light intensity may be defined as the product of second output power and the second fluorescent lifetime t0-t2.In other words; Through setting the first suitable output power, the first fluorescent lifetime t0-t1, second output power and the second fluorescent lifetime t0-t2; Just can in the first time shutter t0-t3, make formed second distribution of light intensity of the second luminescence unit 34b greater than formed first distribution of light intensity of the first luminescence unit 34a.
Please refer to Fig. 6, Fig. 6 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention.As shown in Figure 6, t0-t3 is the first above-mentioned time shutter.In the first time shutter t0-t3; When first electric current I 1 of the input first luminescence unit 34a is identical with second electric current I 2 of importing the second luminescence unit 34b (just first output power of the first luminescence unit 34a equals second output power of the second luminescence unit 34b); The second fluorescent lifetime t0-t2 of the second luminescence unit 34b need be set at the first fluorescent lifetime t0-t1 greater than the first luminescence unit 34a, so that first distribution of light intensity that second distribution of light intensity that the second luminescence unit 34b is produced is produced greater than the first luminescence unit 34a.
Please refer to Fig. 7, Fig. 7 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention.As shown in Figure 7, t0-t2 is the first above-mentioned time shutter.In the first time shutter t0-t2; When the second fluorescent lifetime t0-t1 of the first fluorescent lifetime t0-t1 of the first luminescence unit 34a and the second luminescence unit 34b is identical; Second electric current I 2 of importing the second luminescence unit 34b need be set at first electric current I 1 (just second output power of the second luminescence unit 34b is greater than first output power of the first luminescence unit 34a) greater than the input first luminescence unit 34a, so that first distribution of light intensity that second distribution of light intensity that the second luminescence unit 34b is produced is produced greater than the first luminescence unit 34a.
Please refer to Fig. 8, Fig. 8 be another embodiment of the present invention object sensing apparatus 3 ' synoptic diagram.Like Fig. 8 and shown in Figure 3, object sensing apparatus 3 ' and the main difference part of object sensing apparatus 3 be object sensing apparatus 3 ' also the comprise second image sensing unit 32b.The second image sensing unit 32b is electrically connected on control module 38.The second image sensing unit 32b be arranged at the indication plane 30 the first side S1 and with respect to the first image sensing unit 32a.As shown in Figure 8, the first luminescence unit 34a and the second image sensing unit 32b be at a distance of the 3rd distance B 3, and the second luminescence unit 34b and the second image sensing unit 32b the 4th distance B 4 apart, and wherein the 3rd distance B 3 is greater than the 4th distance B 4.In other words, the first luminescence unit 34a is away from the second image sensing unit 32b, and the second luminescence unit 34b is near the second image sensing unit 32b.The action principle of the action principle of the second image sensing unit 32b and the above-mentioned first image sensing unit 32a is roughly the same, so repeat no more in this.
In using 3 ' time of object sensing apparatus, the control module 38 control first luminescence unit 34a and the second luminescence unit 34b are luminous in first time shutter.When the user utilizes object (for example, finger or pointer) on indication plane 30 during indicating positions, object will cover the part light that the first luminescence unit 34a and the second luminescence unit 34b are launched through LGP 36.Simultaneously, the control module 38 control first image sensing unit 32a in this first time shutter sensing about the side AB on indication plane 30, first image of AC.Then, the control module 38 control first luminescence unit 34a and the second luminescence unit 34b are luminous in second time shutter.At this moment, object also can cover the part light that the first luminescence unit 34a and the second luminescence unit 34b are launched through LGP 36.Simultaneously, the control module 38 control second image sensing unit 32b in this second time shutter sensing about the side AB on indication plane 30, second image of BD.Second image information that first image information that control module 38 is sensed according to the first image sensing unit 32a again and/or the second image sensing unit 32b are sensed calculates the indicated position coordinates of object or other article information.
What need explanation is about the first image sensing unit 32a, the first luminescence unit 34a and the principle of operation of the second luminescence unit 34b in first time shutter as stated, to repeat no more at this.Below only do explanation with regard to the second image sensing unit 32b, the first luminescence unit 34a and the principle of operation of the second luminescence unit 34b in second time shutter.
In this embodiment; In second time shutter; The light that the first luminescence unit 34a sends forms the 3rd distribution of light intensity through LGP 36, and the light that the second luminescence unit 34b sends forms the 4th distribution of light intensity through LGP 36, and the 3rd distribution of light intensity is greater than the 4th distribution of light intensity.In other words; In second time shutter; Formed the 3rd distribution of light intensity of the first luminescence unit 34a (distance second image sensing unit 32b person far away) is greater than formed the 4th distribution of light intensity of the second luminescence unit 34b (the nearer person of the distance second image sensing unit 32b); So in second time shutter; Through suitably adjusting the 3rd distribution of light intensity and the 4th distribution of light intensity, just can uniform distribution of light intensity be provided, so that the image illumination that the second image sensing unit 32b is sensed is comparatively even to the second image sensing unit 32b.
Please refer to Fig. 9, Fig. 9 is the image illumination and the side AB on indication plane 30, the graph of a relation of BD of the second image sensing unit 32b sensing.As shown in Figure 9; Suitably adjust the 3rd distribution of light intensity and the 4th distribution of light intensity through above-mentioned mode; The image illumination of side AB (the second side S2 just) that can make the second image sensing unit 32b sense indication plane 30 demonstrates image illumination curve comparatively uniformly, and just the image illumination that sensed of the second image sensing unit 32b is comparatively even.
Please refer to Figure 10, Figure 10 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention.Shown in figure 10, t4-t7 is the second above-mentioned time shutter.In the second time shutter t4-t7, import first electric current I 1 ' give the first luminescence unit 34a, so that the first luminescence unit 34a is luminous with first output power; And import second electric current I 2 ' give the second luminescence unit 34b, so that the second luminescence unit 34b is luminous with second output power.In addition, in the second time shutter t4-t7, set the 3rd fluorescent lifetime t4-t6 and the 4th fluorescent lifetime t4-t5.The first luminescence unit 34a is luminous in the 3rd fluorescent lifetime t4-t6 in control module 38 controls, and it is luminous in the 4th fluorescent lifetime t4-t5 to control the second luminescence unit 34b.In this embodiment, the 3rd above-mentioned distribution of light intensity can be by first output power and the 3rd fluorescent lifetime t4-t6 decision, and the 4th distribution of light intensity can be by second output power and the 4th fluorescent lifetime t4-t5 decision.
For example, the 3rd distribution of light intensity may be defined as the product of first output power and the 3rd fluorescent lifetime t4-t6, and the 4th distribution of light intensity may be defined as the product of second output power and the 4th fluorescent lifetime t4-t5.In other words; Through setting the first suitable output power, the 3rd fluorescent lifetime t4-t6, second output power and the 4th fluorescent lifetime t4-t5; Just can in the second time shutter t4-t7, make formed the 3rd distribution of light intensity of the first luminescence unit 34a greater than formed the 4th distribution of light intensity of the second luminescence unit 34b.
Please refer to Figure 11, Figure 11 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention.Shown in figure 11, t4-t7 is the second above-mentioned time shutter.In the second time shutter t4-t7; When first electric current I 1 of the input first luminescence unit 34a ' (just first output power of the first luminescence unit 34a equals second output power of the second luminescence unit 34b) with second electric current I 2 of importing the second luminescence unit 34b ' identical; The 3rd fluorescent lifetime t4-t6 of the first luminescence unit 34a need be set at the 4th fluorescent lifetime t4-t5 greater than the second luminescence unit 34b, so that the 4th distribution of light intensity that the 3rd distribution of light intensity that the first luminescence unit 34a is produced is produced greater than the second luminescence unit 34b.
Please refer to Figure 12, Figure 12 is the graph of a relation of time shutter, input current and the fluorescent lifetime of another embodiment of the present invention.Shown in figure 12, t3-t5 is the second above-mentioned time shutter.In the second time shutter t3-t5; When the 4th fluorescent lifetime t3-t4 of the 3rd fluorescent lifetime t3-t4 of the first luminescence unit 34a and the second luminescence unit 34b is identical; Import first electric current I 1 of the first luminescence unit 34a ' need be set at second electric current I 2 ' (just first output power of the first luminescence unit 34a is greater than second output power of the second luminescence unit 34b), so that the 4th distribution of light intensity that the 3rd distribution of light intensity that the first luminescence unit 34a is produced is produced greater than the second luminescence unit 34b greater than the input second luminescence unit 34b.
According to technique scheme; Object sensing apparatus of the present invention has advantage and beneficial effect at least: object sensing apparatus of the present invention can be according to the time shutter of different images sensing cell; The distribution of light intensity size of the luminescence unit of collocation diverse location is to provide indivedual image sensing units uniform distribution of light intensity.Therefore, the image illumination that each image sensing unit was sensed in the time shutter of correspondence is comparatively even, can guarantee the quality of image that each image sensing unit senses, thereby the accuracy of object sensing is effectively promoted.
The above is merely the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. an object sensing apparatus is characterized in that, said object sensing apparatus comprises:
The indication plane;
First image sensing unit is arranged at first side on said indication plane;
First luminescence unit, be arranged at said indication plane second side and with said first image sensing unit at a distance of first distance, said second side is relative with said first side;
Second luminescence unit, be arranged at said indication plane said second side and with said first image sensing unit at a distance of second distance, said second distance is greater than said first distance; And
Control module; Be electrically connected on said first image sensing unit, said first luminescence unit and said second luminescence unit; Said control module control said first image sensing unit in first time shutter sensing about first image on said indication plane; It is luminous to form first distribution of light intensity in said first time shutter to control said first luminescence unit; And it is luminous to form second distribution of light intensity in said first time shutter to control said second luminescence unit, and said second distribution of light intensity is greater than said first distribution of light intensity.
2. object sensing apparatus as claimed in claim 1; It is characterized in that; Said first luminescence unit has first output power, and said second luminescence unit has second output power, sets first fluorescent lifetime and second fluorescent lifetime in said first time shutter; It is luminous in said first fluorescent lifetime that said control module is controlled said first luminescence unit; And it is luminous in said second fluorescent lifetime to control said second luminescence unit, and said first distribution of light intensity is by said first output power and the decision of said first fluorescent lifetime, and said second distribution of light intensity is by said second output power and the decision of said second fluorescent lifetime.
3. object sensing apparatus as claimed in claim 2 is characterized in that, when said first output power equaled said second output power, said second fluorescent lifetime was greater than said first fluorescent lifetime.
4. object sensing apparatus as claimed in claim 2 is characterized in that, when said first fluorescent lifetime equaled said second fluorescent lifetime, said second output power was greater than said first output power.
5. object sensing apparatus as claimed in claim 1 is characterized in that, said first luminescence unit and said second luminescence unit are respectively light emitting diodes.
6. object sensing apparatus as claimed in claim 1; It is characterized in that; Said object sensing apparatus also comprises LGP, is arranged at said second side on said indication plane, and said first luminescence unit and said second luminescence unit are arranged at two ends of said LGP respectively.
7. object sensing apparatus as claimed in claim 1; It is characterized in that; Said object sensing apparatus also comprises second image sensing unit; Be electrically connected on said control module, said second image sensing unit is arranged at said first side on said indication plane and with respect to said first image sensing unit, said first luminescence unit and said second image sensing unit are at a distance of the 3rd distance; Said second luminescence unit and said second image sensing unit are at a distance of the 4th distance; Said the 3rd distance is greater than said the 4th distance, and said control module is controlled said second image sensing unit, and sensing is about second image on said indication plane in second time shutter, and it is luminous to form the 3rd distribution of light intensity in said second time shutter to control said first luminescence unit; And it is luminous to form the 4th distribution of light intensity in said second time shutter to control said second luminescence unit, and said the 3rd distribution of light intensity is greater than said the 4th distribution of light intensity.
8. object sensing apparatus as claimed in claim 7; It is characterized in that; Said first luminescence unit has first output power, and said second luminescence unit has second output power, sets the 3rd fluorescent lifetime and the 4th fluorescent lifetime in said second time shutter; It is luminous in said the 3rd fluorescent lifetime that said control module is controlled said first luminescence unit; And it is luminous in said the 4th fluorescent lifetime to control said second luminescence unit, and said the 3rd distribution of light intensity is by said first output power and the decision of said the 3rd fluorescent lifetime, and said the 4th distribution of light intensity is by said second output power and the decision of said the 4th fluorescent lifetime.
9. object sensing apparatus as claimed in claim 8 is characterized in that, when said first output power equaled said second output power, said the 3rd fluorescent lifetime was greater than said the 4th fluorescent lifetime.
10. object sensing apparatus as claimed in claim 8 is characterized in that, when said the 3rd fluorescent lifetime equaled said the 4th fluorescent lifetime, said first output power was greater than said second output power.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099133264 | 2010-09-30 | ||
| TW99133264A TW201214244A (en) | 2010-09-30 | 2010-09-30 | Object sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102446036A true CN102446036A (en) | 2012-05-09 |
Family
ID=46008586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102826652A Pending CN102446036A (en) | 2010-09-30 | 2011-09-20 | Object sensing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102446036A (en) |
| TW (1) | TW201214244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967562A (en) * | 2019-11-27 | 2020-04-07 | 北京无线电计量测试研究所 | Method and device for measuring uniform domain of radiation sensitivity test field |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI496090B (en) | 2012-09-05 | 2015-08-11 | Ind Tech Res Inst | Method and apparatus for object positioning by using depth images |
| TWI489350B (en) * | 2012-10-01 | 2015-06-21 | 原相科技股份有限公司 | Optical touch apparatus and image capturing apparatus |
| CN103729091A (en) * | 2012-10-11 | 2014-04-16 | 原相科技股份有限公司 | Touch device and image acquisition device |
| CN106961557B (en) * | 2016-01-08 | 2020-01-31 | 中强光电股份有限公司 | Light field camera and image processing method thereof |
| US20180375513A1 (en) * | 2017-05-03 | 2018-12-27 | Sensortek Technology Corp. | Proximity Sensor and Proximity Sensing Module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488058A (en) * | 2008-01-14 | 2009-07-22 | 原相科技股份有限公司 | Optical sensing apparatus and its operation method |
| CN201562261U (en) * | 2009-07-28 | 2010-08-25 | 联想(北京)有限公司 | Electronic equipment |
| CN101847060A (en) * | 2009-03-27 | 2010-09-29 | 联想(北京)有限公司 | Optical touch system and optical touch positioning method |
-
2010
- 2010-09-30 TW TW99133264A patent/TW201214244A/en unknown
-
2011
- 2011-09-20 CN CN2011102826652A patent/CN102446036A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488058A (en) * | 2008-01-14 | 2009-07-22 | 原相科技股份有限公司 | Optical sensing apparatus and its operation method |
| CN101847060A (en) * | 2009-03-27 | 2010-09-29 | 联想(北京)有限公司 | Optical touch system and optical touch positioning method |
| CN201562261U (en) * | 2009-07-28 | 2010-08-25 | 联想(北京)有限公司 | Electronic equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967562A (en) * | 2019-11-27 | 2020-04-07 | 北京无线电计量测试研究所 | Method and device for measuring uniform domain of radiation sensitivity test field |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201214244A (en) | 2012-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102446036A (en) | Object sensing device | |
| CN102520810B (en) | Touch Pen, touch display system and touch display method | |
| US20190102030A1 (en) | Display device with touch detection function | |
| TWI511008B (en) | Touch detection method and optical touch system thereof | |
| US20110096034A1 (en) | Optical touch-sensing display | |
| CN103809815B (en) | Image sensor apparatus, optical touch control apparatus and moving tracing device | |
| KR101974126B1 (en) | Method for controlling a display unit and device thereof | |
| TW201324284A (en) | Frameless optical touch device and image processing method for frameless optical touch device | |
| CN101908301A (en) | Liquid crystal display device, backlight control method and program | |
| TW201435566A (en) | Displacement detecting device and power saving method thereof | |
| CN103870063B (en) | Optical touch system, touch detection method and correction method | |
| CN102236474B (en) | Optical touch device | |
| TWM379804U (en) | Optical position detecting device | |
| US9342164B2 (en) | Motion detecting device and the method for dynamically adjusting image sensing area thereof | |
| US9766687B2 (en) | Capacitive stylus with power saving apparatus | |
| TWI400641B (en) | Optical touch apparatus | |
| CN204790289U (en) | Laser projection device structure | |
| US20120169666A1 (en) | Optical touch-sensing liquid crystal panel, optical touch-sensing panel and method of determining touch position | |
| US20130162597A1 (en) | Optical touch control module | |
| US10114508B2 (en) | Display device and communication method | |
| CN202694299U (en) | Object sensing device and image sensing unit | |
| TWI498793B (en) | Optical touch system and control method | |
| CN202433871U (en) | Object sensing device | |
| TWI472971B (en) | An electronic device and sensing method | |
| JP2011257336A (en) | Optical position detection device, electronic apparatus and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120509 |