CN201622551U - Large-size optical touch screen - Google Patents
Large-size optical touch screen Download PDFInfo
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- CN201622551U CN201622551U CN2010201322090U CN201020132209U CN201622551U CN 201622551 U CN201622551 U CN 201622551U CN 2010201322090 U CN2010201322090 U CN 2010201322090U CN 201020132209 U CN201020132209 U CN 201020132209U CN 201622551 U CN201622551 U CN 201622551U
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- touch screen
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- optical touch
- large scale
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Abstract
The utility model discloses a large-size optical touch screen, which comprises at least three optical sensors, a frame, a large-size touch surface and a processing unit, wherein at least one optical sensor is mounted on one edge of the frame; and at least one of the optical sensors mounted on the edges of the frame and adopts a compound eye camera provided with a plurality of camera lenses. The large-size optical touch screen can be accurately positioned only through fewer optical sensors.
Description
Technical field
The utility model relates to a kind of touch-screen, relates in particular to a kind of large scale optical touch screen.
Background technology
Development along with multimedia information technology, people use human-computer interaction devices such as touch-screen more and more, optical touch screen based on optical technology has obtained application more and more widely, and the large scale optical touch screen is also along with the development of Optical touch screen technology is arisen at the historic moment.Be illustrated in figure 1 as the structural representation of a kind of large scale optical touch screen of the prior art, this optical touch screen comprises optical sensor 101, framework 102, large scale touch-surface 103, light source 104, retroreflecting bar 105 and processing unit, and wherein optical sensor 101 is for having the camera of a camera lens.Because this optical touch screen is the large scale optical touch screen, the size of touch-surface 103 is bigger, in order to guarantee the accuracy of detection of whole optical touch screen, and can only employed camera 101 quantity realize in this optical touch screen by increasing.Because the visual angle with camera of a camera lens generally is no more than 90 degree,, standard of touch-surface 103 every increases of this optical touch screen just needs to increase at least two cameras so touching area S (standard touches area can guarantee that for the optical touch screen of using two cameras with a camera lens and touching the location maximum that accurately detects touches area).The area of the touch-surface 103 of optical touch screen shown in Figure 1 is three times that standard touches area, and then this optical touch screen must contain at least 6 optical sensors 101.Though this large scale optical touch screen has guaranteed the accuracy of detection of whole optical touch screen, but because optical sensor quantity increases considerably and makes the structure complicated of this optical touch screen, production cost also sharply promotes, and this is that optical touch screen manufacturer hates the sight of.
The utility model content
At problems of the prior art, the utility model provides a kind of to need the optical sensor of lesser amt just can realize the precisely large scale optical touch screen of location, this large scale optical touch screen comprises at least three optical sensors, framework, large scale touch-surface and processing unit, at least one optical sensor is installed on the leg of frame of described framework, it is characterized in that: at least one optical sensor that is installed in the optical sensor on the described leg of frame is the compound eye camera with a plurality of camera lenses.
According to an aspect of the present utility model, at least two optical sensors are installed in the corner of described framework in described at least three optical sensors.
According to an aspect of the present utility model, the optical sensor that is installed in corner is the compound eye camera that has the camera of a camera lens or have a plurality of camera lenses.
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 three 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 three 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.
According to an aspect of the present utility model, at least two camera lenses that are installed in each the compound eye camera on the leg of frame have the overlapping region, visual field at described touch-surface.
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 large scale optical touch screen of the prior art;
Fig. 2 is the structural representation according to a kind of embodiment of large scale optical touch screen of the present utility model;
Fig. 3 is the structural representation of the another kind of embodiment of large scale optical touch screen shown in Figure 2;
Fig. 4 is a kind of prioritization scheme to large scale optical touch screen shown in Figure 2; And
Fig. 5 is the synoptic diagram according to a kind of prioritization scheme of the compound eye camera in the large scale optical touch screen of the present utility model.
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 2 as structural representation according to a kind of embodiment of large scale optical touch screen of the present utility model, this large scale optical touch screen comprises at least three optical sensors, framework 102, large scale touch-surface 103, light source 104, retroreflecting bar 105 and processing unit, optical sensor links to each other with processing unit, large scale touch-surface 103 is positioned at the middle part of framework 102, light source 104 is installed near the optical sensor, the retroreflecting bar is installed on the framework 102, has at least an optical sensor to be installed on the leg of frame of framework 102.Though the quantity of optical sensor that this optical touch screen has is at least three but be shown to have four optical sensors in Fig. 1: first optical sensor 201, second optical sensor 202, the 3rd optical sensor 203 and the 4th optical sensor 204, second optical sensor 202 and the 3rd optical sensor 203 are installed on the leg of frame of framework 102, and first optical sensor 201 and the 4th optical sensor 204 are installed in the corner of framework 102.The difference of this optical touch screen shown in Figure 2 and optical touch screen shown in Figure 1 is: at least one optical sensor that is installed in the optical sensor on the leg of frame of framework 102 is the compound eye camera with a plurality of camera lenses, promptly have at least one to be the compound eye camera in second optical sensor 202 and the 3rd optical sensor 203, the touch-surface of optical touch screen is identical with the touch-surface size of optical touch screen shown in Figure 1 as shown in Figure 2, and then second optical sensor 202 and the 3rd optical sensor 203 all are the compound eye camera.The compound eye camera is compared with the common camera with a camera lens has more camera lens, the higher detection precision can still possessed down with great visual angle, so the visual angle of compound eye camera is easy to reach 180 degree, its field range is at least the twice of the field range of the camera with a camera lens, only needs to increase a compound eye camera and gets final product so standard of touch-surface 103 every increases of this optical touch screen touches area S (standard touches area can guarantee that for the optical touch screen of using two cameras with a camera lens and touching the location maximum that accurately detects touches area).This large scale optical touch screen of having used the compound eye camera shown in Figure 2 is compared the usage quantity that has reduced optical sensor (as camera) with large scale optical touch screen shown in Figure 1, reduced production cost; Simplify the structure again simultaneously, be convenient to lay the connecting circuit of optical touch screen.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 near the light source 104 that is installed in the optical sensor simultaneously, the large scale optical touch screen of this structure also can realize touching the location to touch objects.Simultaneously, this large scale optical touch screen is not limited to structure shown in Figure 2, also can be arranged to the structure of optical touch screen as shown in Figure 3, the optical sensor 301 that is installed in the corner of framework 102 in Fig. 3 is the camera with a camera lens, be installed in optical sensor 302 on the leg of frame of framework 102 for having the compound eye camera of a plurality of camera lenses, light source 104 is a tubular light source, and light source 104 is installed on the framework 102.
Be illustrated in figure 4 as a kind of prioritization scheme to large scale optical touch screen shown in Figure 2, first optical sensor 201 and the 4th optical sensor 204 in the optical touch screen shown in Figure 3 are the compound eye camera.Because the accuracy of detection of compound eye camera is far above the camera with a camera lens, so make first optical sensor 201 and the 4th optical sensor 204 all can improve the accuracy of detection of whole optical touch screen for the compound eye camera.
In order to guarantee the accuracy of detection of the juncture area of any two adjacent standards touch areas on the touch-surface, can make at least two camera lenses in each the compound eye camera that is installed on the leg of frame have the overlapping region, visual field at touch-surface, and this overlapping region, visual field covers the juncture area that any two adjacent standards touch area, specifically can be with reference to Fig. 5.In Fig. 5,501 for any one is installed in compound eye camera on the leg of frame, compound eye camera 501 has two camera lenses: first camera lens 5011 and second camera lens 5012, the standard that the visual field of first camera lens 5011 and second camera lens 5012 respectively covers on the touch-surface 103 touches area S, the visual field of first camera lens 5011 and second camera lens 5012 has overlapping region, visual field 503, near the zone the boundary line 504 that overlapping region, visual field 503 two of the coverings standards of closing on touch area.
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. large scale optical touch screen, comprise at least three optical sensors, framework, large scale touch-surface and processing unit, at least one optical sensor is installed on the leg of frame of described framework, it is characterized in that: at least one optical sensor that is installed in the optical sensor on the described leg of frame is the compound eye camera with a plurality of camera lenses.
2. large scale optical touch screen as claimed in claim 1 is characterized in that: at least two optical sensors are installed in the corner of described framework in described at least three optical sensors.
3. large scale optical touch screen as claimed in claim 2 is characterized in that: the optical sensor that is installed in corner is the compound eye camera that has the camera of a camera lens or have a plurality of camera lenses.
4. large scale optical touch screen as claimed in claim 1, it is characterized in that: described optical touch screen also includes light source, described light source be installed in described at least three 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.
5. large scale optical touch screen as claimed in claim 1, it is characterized in that: described optical touch screen also includes light source, described light source be installed in described at least three optical sensors near, described optical touch screen also includes the retroreflecting bar, and described retroreflecting bar is installed on the described framework.
6. large scale optical touch screen as claimed in claim 1 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.
7. as the described large scale optical touch screen of one of claim 1 to 6, it is characterized in that: at least two camera lenses that are installed in each the compound eye camera on the leg of frame have the overlapping region, visual field at described touch-surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201322090U CN201622551U (en) | 2010-03-12 | 2010-03-12 | Large-size optical touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201322090U CN201622551U (en) | 2010-03-12 | 2010-03-12 | Large-size optical touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622551U true CN201622551U (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201322090U Expired - Fee Related CN201622551U (en) | 2010-03-12 | 2010-03-12 | Large-size optical touch screen |
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| CN (1) | CN201622551U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323867A (en) * | 2011-09-06 | 2012-01-18 | 苏州科雷芯电子科技有限公司 | Camera-based large touch screen |
| 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 |
| CN102364418A (en) * | 2011-09-19 | 2012-02-29 | 广东威创视讯科技股份有限公司 | Optical touch-control positioning system and method |
| CN104238797A (en) * | 2013-06-13 | 2014-12-24 | 纬创资通股份有限公司 | Multi-touch system and multi-touch signal processing method |
| CN106445253A (en) * | 2015-08-05 | 2017-02-22 | 纬创资通股份有限公司 | Optical touch system and optical touch device thereof |
-
2010
- 2010-03-12 CN CN2010201322090U patent/CN201622551U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102323867A (en) * | 2011-09-06 | 2012-01-18 | 苏州科雷芯电子科技有限公司 | Camera-based large touch screen |
| CN102364418A (en) * | 2011-09-19 | 2012-02-29 | 广东威创视讯科技股份有限公司 | Optical touch-control positioning system and method |
| CN102364418B (en) * | 2011-09-19 | 2014-07-02 | 广东威创视讯科技股份有限公司 | Optical touch-control positioning system and method |
| CN104238797A (en) * | 2013-06-13 | 2014-12-24 | 纬创资通股份有限公司 | Multi-touch system and multi-touch signal processing method |
| CN106445253A (en) * | 2015-08-05 | 2017-02-22 | 纬创资通股份有限公司 | Optical touch system and optical touch device thereof |
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Legal Events
| Date | Code | Title | Description |
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| 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 |
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| 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 |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20180312 |
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| CF01 | Termination of patent right due to non-payment of annual fee |