CN201876855U - Optical touch screen - Google Patents
Optical touch screen Download PDFInfo
- Publication number
- CN201876855U CN201876855U CN2010206524188U CN201020652418U CN201876855U CN 201876855 U CN201876855 U CN 201876855U CN 2010206524188 U CN2010206524188 U CN 2010206524188U CN 201020652418 U CN201020652418 U CN 201020652418U CN 201876855 U CN201876855 U CN 201876855U
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- touch screen
- touch
- optical touch
- optical
- imageing sensor
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Abstract
The utility model discloses an optical touch screen, which comprises a control panel (2), a touch panel (9) and at least two image acquisition modules (11), wherein the two image acquisition modules (11) are arranged on the side frame of the touch panel (9) and are connected with the control panel. The optical touch screen additionally comprises retro-reflective strips (5) and shading bands (6). The retro-reflective strips (5) are arranged on inner walls on at least three sides of the touch panel (9). The shading bands (6) are arranged above the retro-reflective strips (5). The optical touch screen has the advantages that the structure is simple, the manufacturing cost is low, the optical touch screen is convenient to maintain, the application scope is wide, the optical touch screen is not apt to be affected by environmental conditions, the touch position can be tracked autonomously, the problems of error touches or touch failures can be effectively solved, all light rays coming from the touch panel can be effectively received and the touch position can be accurately positioned.
Description
Technical field
The utility model relates to a kind of optical touch screen, is specially a kind of touch-screen that utilizes optical characteristics work.
Background technology
The home market can be divided into resistance-type, capacitor induction type, infrared-type and surface acoustic wave type touch-screen according to the principle of work of touch-screen and the medium of transmission information at present.The resistance screen is to utilize pressure sensitive to control, and the touch screen surface coating material is had relatively high expectations; If it is many that capacitance touch screen touches object insulating medium content in use.It is insensitive to cause touching reaction, easily produces drift; Surface acoustic wave touch screen needs often to safeguard, because dust, the liquid of greasy dirt even beverage sticks to the surface of screen and blocks the guided wave groove of touch screen surface, make the ripple can not normal transmission, thereby or make the waveform change controller normally to discern, influence the normal use of touch-screen, infrared touch panel resolution is higher, stability is also better, and drift does not produce.
In the touch-screen of above kind, infrared touch panel is to adopt optical characteristics to make, but infrared touch panel also still has some shortcomings to be difficult to overcome, for example: infrared window is afraid of dirty, should not use at uncleanly environment, the occasion heavier as greasy dirts such as factory floor, mining areas, the public arena of outdoor openings such as cash dispenser can not be used.Infrared touch panel will be adorned infrared correlation pipe in the screen outside in addition, and inconvenience is adopted on the small-sized screen, be used for the screen of mobile phone and palm PC as inconvenience, and the production cost of infrared touch panel is also higher.
The utility model content
The utility model causes false touch to touch or touch the problem of inefficacy at existing optical touch screen owing to using for a long time, a kind of optical touch screen is provided, can independently follow the tracks of touch location, effectively receive all light, accurately locate touch location, prolong touch-screen serviceable life, improve resolution, function such as reduce production costs from touch pad.
For realizing above-mentioned purpose, the utility model by the following technical solutions:
A kind of optical touch screen, comprise touch pad, control panel and at least two image collecting module, image collecting module lays respectively at the touch pad frame, image collecting module is connected with control panel, at least three limit inwalls of touch pad are provided with the regression equation reflection bar, and the top of this regression equation reflection bar is provided with photo-shield strip.
Described image collecting module is made up of camera lens, light-emitting component, assistant controller, imageing sensor, and wherein, light-emitting component and assistant controller are connected with imageing sensor respectively, and camera lens and imageing sensor are adjacent and be positioned at sealed hollow.
Described imageing sensor is the planar array type imageing sensor.
Described light-emitting component adopts a led light source or an infrared word line LASER Light Source.
Described image collecting module the place ahead is provided with filter.
Described light-emitting component, camera lens and control panel are parallel with touch pad respectively.
Described touch pad adopts optical glass or organic glass, and touchpad surface is coated with the film of anti-dazzle and antireflection.
The touch operation of optical touch screen is to utilize coherent video to finish, and needs the image at least two image collecting module picked-up touch pad places, generates image information.Comprise coherent video in the image information, coherent video is meant the image information that the image relevant with touch operation presents.After described control panel receives described image information, analyze the information of coherent video, and generate relevant touch operation information and send to the external world,, finish touch operation as host computer.
The utility model is owing to adopt the regression equation reflection bar to be provided with the structure of photo-shield strip, image collecting module collects three light and dark stripe, write down these three light and dark stripe place line positions as responsive line position, when no touch took place, the initialization data of described light and dark three stripe is bit data as a comparison.When touch operation takes place, when touch action occurs near image collecting module, can on photo-shield strip, form bright zone; When touch action occurs in away from image collecting module, can be on reflection bar form dark zone, by with the touch location in the whole touch area of identification more effectively of bit data relatively.Even cause the position of camera lens, photo-sensitive cell, regression equation reflection bar that relative displacement has taken place when touch-screen rocks or uses for a long time, the responsive line position of light and dark three stripe that thereupon changes by the image collecting module collection, two line data and initialized relatively bit data relatively can accurately be obtained touch location equally about responsive row of corresponding extraction and this responsive row.
Compared with prior art, the utlity model has following advantage and beneficial effect:
(1) the utility model one-piece construction is simple, and cost of manufacture is low, and is easy to maintenance.
(2) the utility model can independently be followed the tracks of touch location in the course of the work, effectively receives all light from touch pad, accurately locatees touch location.
(3) the utility model can prolong touch-screen serviceable life, improves resolution, reduce production costs.
(4) the utility model can effectively solve false touch and touch or touch Problem of Failure.
(5) the utility model applied range does not allow to be subject to environmental influence, is easy to popularize.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Fig. 2 is the enlarged drawing of regression equation reflection bar and photo-shield strip in the utility model.
Fig. 3 is the structural representation of image collecting module in the utility model.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, touch pad 9 of the present utility model is a rectangular frame, form an optical touch zone 7, two image collecting module 11 lay respectively at touch pad 9 on one side two tops and be connected with control panel 2, its excess-three limit inwall 3 of touch pad 9 is equipped with the regression equation reflection bar that posts photo-shield strip.
Fig. 2 is the enlarged drawing that posts the regression equation reflection bar 3 of photo-shield strip, and wherein photo-shield strip 6 is positioned at regression equation reflection bar 5 tops.
As shown in Figure 3, image collecting module 11 is made up of camera lens 8, light-emitting component 4, assistant controller 10, imageing sensor 1, this light-emitting component 4 and assistant controller 10 are connected with planar array type imageing sensor 1, camera lens 8 is positioned at sealed hollow with planar array type imageing sensor 1, and image collecting module 11 the place aheads are provided with filter 12.
When no touch takes place, the view data of the regression equation reflection bar 5 that is provided with photo-shield strip 6 that image collecting module 11 collects is the stronger triplex row light and shade striped of contrast, control panel 2 receives this view data, write down these three light and dark stripe place line positions as responsive line position, and write down its primary data position as a comparison.
When touch operation takes place, when touch objects when camera lens 8 is far away, because blocking of touch objects, the light that light-emitting component 4 penetrates makes touch objects form the shadow region on regression equation reflection bar 5, imageing sensor sends to assistant controller 10 after with this image information collection, assistant controller 10 is passed to control panel 2 with image information, thereby the comparison position of image information and primary data formation is compared, and discerns touch location thus; When touch objects when camera lens 8 is nearer, because touch objects is subjected to the irradiation of light-emitting component 4, on photo-shield strip 6 positions, form lighted region, imageing sensor sends to assistant controller 10 after with this image information collection, assistant controller 10 is passed to control panel 2 with this image information and is compared with the comparison position that primary data forms, and discerns touch location thus.
Comprehensive above two kinds of recognition method, in the effective coverage 7 of touch pad 9, image collecting module 11 can be by gathering the view data on regression equation reflection bar 5 and the photo-shield strip 6 and sending to control panel 2, control panel 2 receive view data and with relatively produce touch information after the bit comparison, host terminal receives the touch information that control panel 2 sends and also feeds back on the display, thereby realizes that effectively touch action wants the function that realizes.
As mentioned above, just can implement the utility model preferably.
Claims (8)
1. optical touch screen, comprise control panel (2), touch pad (9), at least two image collecting module (11), image collecting module (11) is positioned on touch pad (9) frame, and be connected with control panel (2), the inwall (3) on touch pad (9) at least three limits is provided with regression equation reflection bar (5), it is characterized in that: the top of described regression equation reflection bar (5) is provided with photo-shield strip (6).
2. a kind of optical touch screen according to claim 1, it is characterized in that: described image collecting module (11) is made of camera lens (8), light-emitting component (4), assistant controller (10), imageing sensor (1), wherein, light-emitting component (4) and assistant controller (10) are connected with imageing sensor (1) respectively, and camera lens (8) is adjacent with imageing sensor (1) and be positioned at sealed hollow.
3. a kind of optical touch screen according to claim 2 is characterized in that: in image collecting module (11) the place ahead filter (12) is set.
4. a kind of optical touch screen according to claim 2 is characterized in that: described imageing sensor (1) is the planar array type imageing sensor.
5. a kind of optical touch screen according to claim 2 is characterized in that: described light-emitting component (4) is a led light source or an infrared word line LASER Light Source.
6. a kind of optical touch screen according to claim 2 is characterized in that: described light-emitting component (4), camera lens (8) and control panel (2) are parallel with described touch pad (9) respectively.
7. according to each described a kind of optical touch screen among the claim 1-6, it is characterized in that: described touch pad (9) adopts optical glass or organic glass.
8. a kind of optical touch screen according to claim 7 is characterized in that: described touch pad (9) surface is coated with the film of anti-dazzle and antireflection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206524188U CN201876855U (en) | 2010-12-10 | 2010-12-10 | Optical touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206524188U CN201876855U (en) | 2010-12-10 | 2010-12-10 | Optical touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876855U true CN201876855U (en) | 2011-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206524188U Expired - Fee Related CN201876855U (en) | 2010-12-10 | 2010-12-10 | Optical touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876855U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376200A (en) * | 2012-04-27 | 2013-10-30 | 纬创资通股份有限公司 | Testing device, detection system and automatic detection method thereof |
| CN103412684A (en) * | 2013-03-26 | 2013-11-27 | 南京瓦迪电子科技有限公司 | Section material strip having light-resistant function and optical touch frame |
| WO2016145968A1 (en) * | 2015-03-13 | 2016-09-22 | 京东方科技集团股份有限公司 | Touch control substrate and touch control display apparatus |
-
2010
- 2010-12-10 CN CN2010206524188U patent/CN201876855U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376200A (en) * | 2012-04-27 | 2013-10-30 | 纬创资通股份有限公司 | Testing device, detection system and automatic detection method thereof |
| CN103376200B (en) * | 2012-04-27 | 2015-12-09 | 纬创资通股份有限公司 | Testing device, detection system and automatic detection method thereof |
| CN103412684A (en) * | 2013-03-26 | 2013-11-27 | 南京瓦迪电子科技有限公司 | Section material strip having light-resistant function and optical touch frame |
| WO2016145968A1 (en) * | 2015-03-13 | 2016-09-22 | 京东方科技集团股份有限公司 | Touch control substrate and touch control display apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Lovetouch Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20151210 |