CN201611477U - Optical touch screen - Google Patents
Optical touch screen Download PDFInfo
- Publication number
- CN201611477U CN201611477U CN2010201322103U CN201020132210U CN201611477U CN 201611477 U CN201611477 U CN 201611477U CN 2010201322103 U CN2010201322103 U CN 2010201322103U CN 201020132210 U CN201020132210 U CN 201020132210U CN 201611477 U CN201611477 U CN 201611477U
- Authority
- CN
- China
- Prior art keywords
- optical
- touch screen
- optical touch
- optical sensors
- light source
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an optical touch screen which comprises at least two optical sensors, a touch surface and a processing unit. At least two optical sensors have visual field overlapping area which covers the touch surface. At least two optical sensors obtain the image of the touched surface from different positions and generate the image data. At least one optical sensor in the at least two optical sensors is a compound eye camera with a plurality of lens. Each position on the touch surface is in the visual field range of at least two lens with different visual field directions in the same compound eye camera. The optical touch screen realizes multi-point touch through applying the compound eye camera.
Description
Technical field
The utility model relates to a kind of optical touch screen, relates in particular to a kind of optical touch screen that can realize multiple point touching.
Background technology
Along with the development of multimedia information technology, people use human-computer interaction devices such as touch-screen more and more, have obtained application more and more widely based on the optical touch screen of optical technology.Be illustrated in figure 1 as the structural representation of a kind of optical touch screen of the prior art, this optical touch screen comprises two optical sensors 101, framework 102, touch-surface 103, light source 104, retroreflecting bar 105 and processing unit, two optical sensors 101 are installed in two adjacent corners of framework 102 respectively, touch-surface 103 is positioned at the middle part of framework 102, light source 104 be installed in optical sensor 101 near, retroreflecting bar 105 is installed on the framework 102, and optical sensor 101 is for having the common camera of a camera lens.
This optical touch screen shown in Figure 1 can only realize touching the location to single touch objects, when the quantity of touch objects will produce false touch point during for two or more.Be illustrated in figure 2 as the synoptic diagram that optical touch screen shown in Figure 1 produces false touch point, A and B are in esse touch point, but optical touch screen shown in Figure 1 can obtain A, B, four touch points of a, b according to triangulation, and wherein a and b are false touch point.
The utility model content
At problems of the prior art, the utility model provides a kind of can realize multiple point touching, the optical touch screen that does not have false touch point, this optical touch screen comprises: at least two optical sensors, touch-surface and processing unit, described at least two optical sensors have the overlapping region, visual field that covers described touch-surface, described at least two optical sensors obtain the image of described touch-surface and produce view data from diverse location, having an optical sensor at least in described two optical sensors at least is the compound eye camera with a plurality of camera lenses, and each position on the described touch-surface is all dropped within the field range of the different camera lens of two visual field directions in the same compound eye camera at least.
According to an aspect of the present utility model, camera lens zero lap zone between the imaging region on the same imageing sensor that described at least two visual field directions are different.
According to an aspect of the present utility model, described optical touch screen has framework, and the quantity of described optical sensor is two, and two optical sensors are installed in two adjacent corners of described framework respectively.
According to an aspect of the present utility model, two optical sensors in described two optical sensors all are the compound eye camera.
According to an aspect of the present utility model, described optical touch screen also includes light source, described light source be installed in described at least two optical sensors near, described optical touch screen also includes indication body, described indication body is the touch objects that outside surface is provided with the retroreflecting bar.
According to an aspect of the present utility model, described optical touch screen also includes light source, described light source be installed in described at least two optical sensors near, described optical touch screen also includes the retroreflecting bar, described retroreflecting bar is installed on the described framework.
According to an aspect of the present utility model, described optical touch screen also includes light source, and described light source is installed on the leg of frame of described framework.
Others of the present utility model and/or advantage part are in the following description described, and wherein part is conspicuous in this explanation, perhaps can be by learning in the practice of the present utility model.
Description of drawings
By reading following detailed description the in detail with reference to the following drawings, can understand the utility model better.Be noted that each details in the accompanying drawing is not proportionally to draw.On the contrary, for the sake of clarity, each details is at random enlarged or is dwindled, in these accompanying drawings:
Fig. 1 is the structural representation of a kind of optical touch screen of the prior art;
Fig. 2 produces the synoptic diagram of false touch point for optical touch screen shown in Figure 1;
Fig. 3 is the structural representation according to a kind of embodiment of optical touch screen of the present utility model;
Fig. 4 is the synoptic diagram that optical touch screen shown in Figure 3 is realized multiple point touching;
Fig. 5 is the distribution schematic diagram of the imaging region of a plurality of camera lenses on imageing sensor on the compound eye camera in the optical touch screen shown in Figure 3; And
Fig. 6 is the structural representation to a kind of prioritization scheme of optical touch screen shown in Figure 3
Embodiment
To begin the detailed description of embodiment of the present utility model below, according to corresponding description of drawings embodiment, wherein identical in the whole text Reference numeral refers to components identical.Below will by with reference to description of drawings embodiment to explain the utility model.
Be illustrated in figure 3 as the structural representation according to a kind of embodiment of optical touch screen of the present utility model, this optical touch screen comprises two optical sensors: first optical sensor 301 and second optical sensor 302, framework 102, touch-surface 103, light source 104, retroreflecting bar 105 and processing unit.Wherein, framework 102 is a rectangular frame, and touch-surface 103 is positioned at the middle part of rectangular frame 102, light source 104 be installed in optical sensor 101 near, retroreflecting bar 105 is installed on the framework 102, and first optical sensor 301 all is connected with processing unit with second optical sensor 302.First optical sensor 301 and second optical sensor 302 all have the overlapping region, visual field that covers touch-surface 103, first optical sensor 301 and second optical sensor 302 are installed in two the adjacent corners on the rectangular frame 102 respectively, and two optical sensors obtain the image of touch-surface 103 and produce view data from diverse location.Though the quantity of optical sensor in Fig. 1, be illustrated as two in fact this optical touch screen also can have more optical sensor.Second optical sensor 302 is the common camera with a camera lens.First optical sensor 301 is the compound eye camera, and each position on the touch-surface 103 is all dropped within the field range of the different camera lens of two visual field directions in first optical sensor 301 at least.This optical touch screen can be realized multiple point touching owing to used the compound eye camera.Be illustrated in figure 4 as optical touch screen shown in Figure 3 and realize the synoptic diagram of multiple point touching, though can having more camera lens, first optical sensor 301 in Fig. 4, is illustrated as only having two camera lenses: first camera lens 401 and second camera lens 402, each position on the touch-surface 103 is all dropped within the field range of first camera lens 401 and second camera lens 402, on touch-surface 103, there are two touch objects: touch objects M and touch objects N simultaneously, first camera lens 401 and second optical sensor in first optical sensor 301 can obtain four touch point: M by triangulation, N, m and n, wherein these two touch points of m and n are false touch point, second camera lens 402 in first optical sensor 301 can obtain the image of touch objects from touch-surface 103 simultaneously, true touch point M and N can imagings on the imaging region on second camera lens, the 402 pairing imageing sensors, and false touch point m and n can imagings on the imaging region on second camera lens, the 402 pairing imageing sensors, thereby realized differentiation, and then realized multiple point touching true touch point and false touch point.Wherein, retroreflecting bar 105 can not installed, and need increase indicant in this optical touch screen, and indicant is the touch objects (as writing pencil etc.) that outside surface is pasted with the retroreflecting bar.Perhaps on the position at diagram retroreflecting bar 105 places tubular light source is installed, is removed simultaneously and be installed near first optical sensor 301 light source 104 with second optical sensor 302, this structure optical touch screen also can be realized multiple point touching.As a kind of preferred, first camera lens 401 in first optical sensor 301 and second camera lens 402 zero lap zone between the imaging region on the same imageing sensor (CCD), as shown in Figure 5, first camera lens 401 is an area E at the imaging region of imageing sensor 501, second camera lens 402 is regional F at the imaging region of imageing sensor 501, zero lap zone between area E and the regional F.
Be illustrated in figure 6 as structural representation to a kind of prioritization scheme of optical touch screen shown in Figure 3, can make second optical sensor 302 be the compound eye camera, because the compound eye camera is compared with the common camera with a camera lens and is had higher accuracy of detection, makes second optical sensor 302 can promote the accuracy of detection of whole optical touch screen for the compound eye camera.
Although embodiment of the present utility model has been made comparatively detailed explanation and description, but those skilled in the art should understand under the situation that does not break away from the utility model spirit and principle and can change these embodiments that its scope definition in the claims.
Claims (7)
1. optical touch screen, comprise at least two optical sensors, touch-surface and processing unit, described at least two optical sensors have the overlapping region, visual field that covers described touch-surface, described at least two optical sensors obtain the image of described touch-surface and produce view data from diverse location, it is characterized in that: having an optical sensor at least in described two optical sensors at least is the compound eye camera with a plurality of camera lenses, and each position on the described touch-surface is all dropped within the field range of the different camera lens of two visual field directions in the same compound eye camera at least.
2. optical touch screen as claimed in claim 1 is characterized in that: camera lens zero lap zone between the imaging region on the same imageing sensor that described at least two visual field directions are different.
3. optical touch screen as claimed in claim 2 is characterized in that: described optical touch screen has framework, and the quantity of described optical sensor is two, and two optical sensors are installed in two adjacent corners of described framework respectively.
4. optical touch screen as claimed in claim 3 is characterized in that: two optical sensors in described two optical sensors all are the compound eye camera.
5. as the described optical touch screen of one of claim 1 to 4, it is characterized in that: described optical touch screen also includes light source, described light source be installed in described at least two optical sensors near, described optical touch screen also includes indication body, and described indication body is the touch objects that outside surface is provided with the retroreflecting bar.
6. as the described optical touch screen of one of claim 1 to 4, it is characterized in that: described optical touch screen also includes light source, described light source be installed in described at least two optical sensors near, described optical touch screen also includes the retroreflecting bar, and described retroreflecting bar is installed on the described framework.
7. as the described optical touch screen of one of claim 1 to 4, it is characterized in that: described optical touch screen also includes light source, and described light source is installed on the leg of frame of described framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201322103U CN201611477U (en) | 2010-03-12 | 2010-03-12 | Optical touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201322103U CN201611477U (en) | 2010-03-12 | 2010-03-12 | Optical touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201611477U true CN201611477U (en) | 2010-10-20 |
Family
ID=42962110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201322103U Expired - Fee Related CN201611477U (en) | 2010-03-12 | 2010-03-12 | Optical touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201611477U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184060A (en) * | 2011-05-31 | 2011-09-14 | 无锡泰能科技有限公司 | Optic touch control device |
| CN102331889A (en) * | 2011-09-01 | 2012-01-25 | 广东威创视讯科技股份有限公司 | Image pick-up type touch control method and device |
| CN103631444A (en) * | 2012-08-20 | 2014-03-12 | 原相科技股份有限公司 | Optical touch control system and method |
| CN103763453A (en) * | 2013-01-25 | 2014-04-30 | 陈旭 | Image and text collection and recognition device |
| CN104835361A (en) * | 2014-02-10 | 2015-08-12 | 陈旭 | Electronic dictionary |
| CN103631444B (en) * | 2012-08-20 | 2016-11-30 | 原相科技股份有限公司 | Optical touch control system and method |
| CN107132953A (en) * | 2011-06-07 | 2017-09-05 | 上海科斗电子科技有限公司 | A kind of optical signal receives head and the touch-screen with light-filtering channels |
| US9766753B2 (en) | 2012-08-03 | 2017-09-19 | Pixart Imaging Inc. | Optical touch system and method having image sensors to detect objects over a touch surface |
-
2010
- 2010-03-12 CN CN2010201322103U patent/CN201611477U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184060A (en) * | 2011-05-31 | 2011-09-14 | 无锡泰能科技有限公司 | Optic touch control device |
| CN107132953A (en) * | 2011-06-07 | 2017-09-05 | 上海科斗电子科技有限公司 | A kind of optical signal receives head and the touch-screen with light-filtering channels |
| CN102331889A (en) * | 2011-09-01 | 2012-01-25 | 广东威创视讯科技股份有限公司 | Image pick-up type touch control method and device |
| CN102331889B (en) * | 2011-09-01 | 2014-07-23 | 广东威创视讯科技股份有限公司 | Image pick-up type touch control method and device |
| US9766753B2 (en) | 2012-08-03 | 2017-09-19 | Pixart Imaging Inc. | Optical touch system and method having image sensors to detect objects over a touch surface |
| CN103631444A (en) * | 2012-08-20 | 2014-03-12 | 原相科技股份有限公司 | Optical touch control system and method |
| CN103631444B (en) * | 2012-08-20 | 2016-11-30 | 原相科技股份有限公司 | Optical touch control system and method |
| CN103763453A (en) * | 2013-01-25 | 2014-04-30 | 陈旭 | Image and text collection and recognition device |
| CN103763453B (en) * | 2013-01-25 | 2019-09-10 | 陈旭 | A kind of graphics context collection identification device |
| CN104835361A (en) * | 2014-02-10 | 2015-08-12 | 陈旭 | Electronic dictionary |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201611477U (en) | Optical touch screen | |
| US20170010742A1 (en) | Touch-control display panel and touch-control display device | |
| US9454260B2 (en) | System and method for enabling multi-display input | |
| US20110199335A1 (en) | Determining a Position of an Object Using a Single Camera | |
| US9639221B2 (en) | Method of designing a conductive pattern with reduced channel break visibility | |
| CN105182676A (en) | Projection screen, and touch control screen projection display method and system | |
| CN102163108A (en) | Method and device for identifying multiple touch points | |
| CN201622551U (en) | Large-size optical touch screen | |
| US10037107B2 (en) | Optical touch device and sensing method thereof | |
| CN201583926U (en) | Optical touch screen | |
| CN201741134U (en) | Infrared transmitting tube and touch control screen | |
| CN204066012U (en) | A kind of projection arrangement | |
| TW201317858A (en) | Optical touch panel system, optical sensing module, and operation method thereof | |
| CN101819493B (en) | Interactive display screen and method thereof | |
| CN202443449U (en) | Photographic multi-point touch system | |
| CN101739177B (en) | Three-dimensional interactive display and method for detecting three-dimensional coordinate thereof | |
| CN201773382U (en) | Touch screen with camera | |
| CN201859424U (en) | Touch control system of display | |
| KR101252243B1 (en) | Microstructured optical film | |
| CN101446875A (en) | Interactive display screen and interactive display method | |
| CN202150098U (en) | Touch recognition device with infrared reflective pen | |
| CN203012678U (en) | Fly eye bionic touch screen | |
| CN104238734A (en) | three-dimensional interaction system and interaction sensing method thereof | |
| Wang et al. | A multi-touch platform based on four corner cameras and methods for accurately locating contact points | |
| CN103218088B (en) | Optical touch display device and optical touch screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Irtouch Systems Co.,Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Irtouch Systems Co.,Ltd. Document name: Notification of Termination of Patent Right |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101020 Termination date: 20180312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |