CN202120237U - High-sensitivity optical imaging touch screen - Google Patents
High-sensitivity optical imaging touch screen Download PDFInfo
- Publication number
- CN202120237U CN202120237U CN2011201768848U CN201120176884U CN202120237U CN 202120237 U CN202120237 U CN 202120237U CN 2011201768848 U CN2011201768848 U CN 2011201768848U CN 201120176884 U CN201120176884 U CN 201120176884U CN 202120237 U CN202120237 U CN 202120237U
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- China
- Prior art keywords
- light
- camera
- touch
- eyeglass
- sensitive screen
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- 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.)
- Expired - Lifetime
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- 238000012634 optical imaging Methods 0.000 title abstract 2
- 230000003287 optical effect Effects 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract 4
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model discloses a high sensitivity's optical imaging touch-sensitive screen, including the touch-sensitive screen body, set up in camera, neighbouring each on one side two corners of touch-sensitive screen body frame the light emitting component of camera and set up in the reflection of light strip on the other trilateral of touch-sensitive screen body frame, wherein, each the place ahead of camera is equipped with a lens, just one deck printing opacity membrane is plated on the surface of lens, and the light that makes light emitting component launch passes after the reflection of light strip take the lens of printing opacity membrane and get into in the camera that corresponds. The utility model discloses high sensitivity's optics formation of image touch-sensitive screen, the lens that is equipped with through the place ahead at the camera plates one deck printing opacity membrane on the surface, utilizes this printing opacity membrane to see through the light that is reflected back by the reflection strip and prevents simultaneously that external light from seeing through and getting into the camera to prevent that external light can be to producing the interference by the light that the reflection strip reflected back, reach the effect that improves optics formation of image touch-sensitive screen sensitivity and stability.
Description
Technical field
The utility model relates to the touch system field, relates in particular to a kind of highly sensitive optical imagery touch-screen.
Background technology
We know; The optical principle that existing optical imagery touch-screen generally utilizes is following: the CCD/CMOS camera that is installed in the upper left corner, top; Launch light through the LED lamp,, get in the CCD/CMOS camera in the upper left corner through reflection bar reflection all around.In like manner, the light of the LED in upper right corner emission imports in the CCD camera on right side.The light that gathers forms a reticule in the touch area, through the space between the light that repeatedly reflects in 1MM.When touch is a bit; Left side LED is transmitted into the light of this point and light that reflectance coating reflects back all is blocked; LED simultaneously is transmitted into the light of changing the time and also is blocked; The straight line that constitutes between the CCD/CMOS camera at two ends and this two light and two cameras like this can be formed two angles again, and this accurate coordinate Be Controlled device typing like this realizes touching reaction.Single-point, multiple point touching have been realized.
Existing optical imagery touch-screen; In order to protect its CCD/CMOS camera to prevent that dust, steam and foreign material etc. from getting into and influence the use of CCD/CMOS camera; Often outside the CCD/CMOS camera, coat a sealing mechanism; Simultaneously an eyeglass (like transparent PMMA sheet) is set, makes the light that reflects by reflection bar see through eyeglass and get into the CCD/CMOS camera in the place ahead of CCD/CMOS camera (over against the one side of touch-screen).But; Not enough below this design exists: (1) is because use transparent PMMA eyeglass; It both can see through the light that is reflected by reflection bar, ambient light is seen through get in the CCD/CMOS camera, like this; Ambient light can produce the light that is reflected by reflection bar and disturb, and influences the normal use of CCD/CMOS camera; (2) in addition, owing to adopt transparent PMMA eyeglass, can know that seeing through this eyeglass sees CCD/CMOS camera, PCB circuit board and infrared LED lamp etc., causes outward appearance not attractive in appearance.
The utility model content
The purpose of the utility model provides a kind of highly sensitive optical imagery touch-screen; Plate one deck light-transmissive film on the lens surface that is provided with through the place ahead at camera; Utilize this light-transmissive film to prevent simultaneously also that through the light that reflects by reflection bar ambient light from seeing through in the entering camera; Thereby prevent that ambient light from can produce interference to the light that is reflected by reflection bar, reaches the effect that improves optical imagery sensitivity of touch screen and stability.
For realizing above-mentioned purpose; The utility model embodiment provides a kind of highly sensitive optical imagery touch-screen; Comprise touch screen body, be arranged at the light-emitting component of the camera on two jiaos on one side of said touch screen body frame, contiguous each said camera and be arranged at the reflecting strips on other three limits of said touch screen body frame; Wherein, The place ahead of each said camera is provided with an eyeglass, and the surface of said eyeglass plates one deck light-transmissive film, and the light that light-emitting component is launched gets in the corresponding camera through passing the eyeglass of said band light-transmissive film after the reflection of reflecting strips.
Preferably, said light-emitting component places the top of each said camera.
Preferably, said light-emitting component is the LED lamp.
Preferably, each camera is provided with a printing opacity packoff, and said eyeglass places outside the said printing opacity packoff.
Preferably, the light-transmissive film on the said eyeglass is different and to change according to the incident angle of light.
Compared with prior art; Plate one deck light-transmissive film on the lens surface that the highly sensitive optical imagery touch-screen of the utility model is provided with through the place ahead at camera; Utilize this light-transmissive film to prevent simultaneously also that through the light that reflects by reflection bar ambient light from seeing through in the entering camera; Thereby prevent that ambient light from can produce interference to the light that is reflected by reflection bar, reaches the effect that improves optical imagery sensitivity of touch screen and stability, and reach the purpose of beautifying outward appearance simultaneously.
Description of drawings
Fig. 1 is the structural representation of the highly sensitive optical imagery touch-screen of the utility model.
Fig. 2 is the partial enlarged drawing of highly sensitive optical imagery touch-screen among Fig. 1.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done to describe in detail further below.
Shown in Fig. 1 ~ 2; The utility model provides a kind of highly sensitive optical imagery touch-screen, comprises touch screen body 10, and said touch screen body 10 comprises four frames and the display screen that is fenced up by four frames; These four frames comprise first frame 11, second frame 12, the 3rd frame 13 and the 4th frame 14; Wherein, first frame 11 is relative with the 3rd frame 13, second frame 12 is relative with the 4th frame 14, second frame 12, the 4th frame 14 are adjacent with first frame 11 respectively.Be respectively arranged with camera 20 on two jiaos of said first frame 11, the top of each said camera 20 is equipped with light-emitting component 30, and said light-emitting component 30 is the infrared LED lamp.Said second frame 12, the 3rd frame 13 and the 4th frame 14 are equipped with reflecting strips (figure does not show), are used for the light that reflection is sent from said light-emitting component 30 (infrared LED lamp), and the light correspondence that is reflected is received by said camera 20.
In the present embodiment; Each said camera 20 is provided with a printing opacity packoff (figure does not show); The outer one side over against said touch-screen of said printing opacity packoff is provided with an eyeglass 40; And the surface of said eyeglass 40 plates one deck light-transmissive film 41; The light that light-emitting component 30 (infrared LED lamp) is launched gets in the corresponding camera 20 through passing the eyeglass of said band light-transmissive film 41 after the reflection of reflecting strips, and prevents that simultaneously ambient light from seeing through in the entering camera 20, thereby prevents that ambient light from can produce interference to the light that is reflected by reflection bar; In addition, the light-transmissive film on the said eyeglass 40 41 is different and to change (shown in thickness shade among the figure) according to the incident angle of the light that reflects.
In sum; Plate one deck light-transmissive film 41 on eyeglass 40 surfaces that the highly sensitive optical imagery touch-screen of the utility model is provided with through the place ahead at camera 20; Utilize this light-transmissive film 41 to see through the light that reflects by reflection bar and prevent simultaneously that also ambient light from seeing through in the entering camera; Thereby prevent that ambient light from can produce interference to the light that is reflected by reflection bar, reaches the effect that improves optical imagery sensitivity of touch screen and stability, and reach the purpose of beautifying outward appearance simultaneously.
The above is the preferred implementation of the utility model; Certainly can not limit the interest field of the utility model with this; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and change, these improvement and change also are regarded as the protection domain of the utility model.
Claims (5)
1. highly sensitive optical imagery touch-screen; Comprise touch screen body, be arranged at the light-emitting component of the camera on two jiaos on one side of said touch screen body frame, contiguous each said camera and be arranged at the reflecting strips on other three limits of said touch screen body frame; It is characterized in that: the place ahead of each said camera is provided with an eyeglass; And the surface of said eyeglass plates one deck light-transmissive film, and the light that light-emitting component is launched gets in the corresponding camera through passing the eyeglass of said band light-transmissive film after the reflection of reflecting strips.
2. highly sensitive optical imagery touch-screen according to claim 1, it is characterized in that: said light-emitting component places the top of each said camera.
3. highly sensitive optical imagery touch-screen according to claim 1 is characterized in that: said light-emitting component is the infrared LED lamp.
4. highly sensitive optical imagery touch-screen according to claim 1 is characterized in that: each said camera is provided with a printing opacity packoff, and said eyeglass places outside the said printing opacity packoff.
5. highly sensitive optical imagery touch-screen according to claim 1 is characterized in that: the light-transmissive film on the said eyeglass is different and to change according to the incident angle of light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201768848U CN202120237U (en) | 2011-05-30 | 2011-05-30 | High-sensitivity optical imaging touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201768848U CN202120237U (en) | 2011-05-30 | 2011-05-30 | High-sensitivity optical imaging touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202120237U true CN202120237U (en) | 2012-01-18 |
Family
ID=45461286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201768848U Expired - Lifetime CN202120237U (en) | 2011-05-30 | 2011-05-30 | High-sensitivity optical imaging touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202120237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814745A (en) * | 2018-05-06 | 2019-05-28 | 柯梦天 | Reduce the electronic whiteboard and LCD all-in-one machine of touch-control interference |
-
2011
- 2011-05-30 CN CN2011201768848U patent/CN202120237U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109814745A (en) * | 2018-05-06 | 2019-05-28 | 柯梦天 | Reduce the electronic whiteboard and LCD all-in-one machine of touch-control interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |
|
| CX01 | Expiry of patent term |