CN102637097A - Touch positioning device and touch projection display device with same - Google Patents
Touch positioning device and touch projection display device with same Download PDFInfo
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- CN102637097A CN102637097A CN2012100898862A CN201210089886A CN102637097A CN 102637097 A CN102637097 A CN 102637097A CN 2012100898862 A CN2012100898862 A CN 2012100898862A CN 201210089886 A CN201210089886 A CN 201210089886A CN 102637097 A CN102637097 A CN 102637097A
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- transparent plate
- positioning device
- display device
- touch
- touch positioning
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Abstract
The invention relates to a touch positioning device and touch projection display device with the same and belongs to the field of touch display. The touch positioning device comprises a display device, an infrared transmitting tube and an image capture device, wherein the image capture device is arranged at the back of the display device; the touch positioning device further comprises a transparent plate of which the length and the width are both larger than those of the display device; the transparent plate is arranged on the frontage of the display device; a groove is arranged at one side, facing the display device, on at least one end part of the transparent plate; and the infrared transmitting tube is arranged in the groove. By utilizing the scheme of the invention, the infrared transmitting tube is placed in the groove at the bottom surface of the end of the transparent plate, so that the infrared transmitting tube is protected certainly and has less possibility of being affected by human operation factors; the touch positioning device has a smooth surface without projecting side frames, is high in reliability and is easy to operate.
Description
Technical field
The invention belongs to and touch the demonstration field, be specifically related to a kind of touch positioning device and have the touch projection display equipment of this touch positioning device.
Background technology
Touch-screen is the simplest, convenient, natural at present a kind of man-machine interaction mode as a kind of new computer input equipment.It has given multimedia with brand-new looks, is extremely attractive brand-new multimedia interactive equipment.
For projection display apparatus, in the screen top edge infrared transmitting tube is set, and camera is set below screen; When touching the object touch; The diffuse reflection of dependence touch object is reflected the into camera of screen below with the IR of infrared transmitting tube emission, in the image that camera is taken, has a hot spot; According to the position of this hot spot, locate touch point position.
Utilize existing location technology,, can form protruding frame in the screen edge part for infrared transmitting tube is installed.When carrying out touch operation, need to note constantly protruding frame, in order to avoid make the infrared transmitting tube damage or influence its operate as normal, make the reliability that touches the location reduce, operate easy inadequately convenience.
Summary of the invention
The technical matters that the present invention solves is the deficiency that overcomes prior art, and a kind of touch positioning device high, simple to operation to touch point spot location reliability is provided.
The present invention also provides a kind of touch projection display equipment of having this touch positioning device high, simple to operation to touch point spot location reliability.
For solving the problems of the technologies described above, the technical scheme of first goal of the invention of the present invention is following:
A kind of touch positioning device; Comprise display device, infrared transmitting tube and image-capturing apparatus; Image-capturing apparatus is arranged on the display device back side, also comprises length and width all greater than the transparent plate of display device length and width, and said transparent plate is arranged on the display device front; To the one side of display device groove is set at least one end face of transparent plate, infrared transmitting tube is arranged in the groove.
In the such scheme, the side of said transparent plate is provided with reflectance coating.
In the such scheme, reflection horizon or light-absorption layer are set, corresponding to the zone outside the display device viewing area reflection horizon or light-absorption layer are set on the transparent plate surface at the opening part of groove.
In the such scheme, be provided with in the side of display device and be used to support and the fixing bracing frame of transparent plate.
In the such scheme, said groove is a rectangular recess.
In the such scheme, infrared transmitting tube is obliquely installed with respect to transparent plate, and the radiative plane of incidence of infrared transmitting tube is set to the inclined-plane.
In the such scheme, infrared transmitting tube vertically is provided with respect to transparent plate, and the radiative plane of incidence of infrared transmitting tube is set to the inclined-plane, and reflectance coating is set on the inclined-plane, and the side near the transparent plate side is provided with reflectance coating in groove.
In the such scheme, be provided with the infrared BPF. that is used to filter visible light in the said image-capturing apparatus.
In the such scheme, said transparent plate is that clear glass is dull and stereotyped.
The technical scheme of second goal of the invention of the present invention is following:
A kind of touch projection display equipment comprises projector, also comprises described touch positioning device, and the display device in the said touch positioning device is a projection screen, and projector is arranged on the projection screen back side.
Compared with prior art, the beneficial effect of technical scheme of the present invention is:
After the infrared light of the infrared transmitting tube emission among the present invention gets into transparent plate total reflection takes place, when touching object touch transparent plate surface, touch object and destroy the total reflection of light in transparent plate, light can leak, and forms hot spot; Image-capturing apparatus photographs this hot spot, judges the position that touches object according to the position of hot spot.Adopt scheme of the present invention, infrared transmitting tube is positioned in the bottom recesses of transparent plate end, receives certain protection, is not subject to the manual operation factor affecting.The touch positioning device surfacing, no raised border, reliability improves, and easy operating.
Description of drawings
Fig. 1 is the structural representation of a kind of touch positioning device among the present invention;
Fig. 2 is touch positioning device work synoptic diagram among the present invention;
Fig. 3 is the hot spot synoptic diagram of touch positioning device among the present invention;
Fig. 4 is the structural representation of specific embodiment 1 in the touch positioning device of the present invention;
Fig. 5 is the structural representation of specific embodiment 2 in the touch positioning device of the present invention;
Fig. 6 is the structural representation of specific embodiment 3 in the touch positioning device of the present invention;
Fig. 7 is the structural representation of specific embodiment 4 in the touch positioning device of the present invention;
Fig. 8 is for touching the structural representation of projection display equipment among the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is done further explanation.
As shown in Figure 1, be the structural representation of a kind of touch positioning device among the present invention.A kind of touch positioning device, display device 1, infrared transmitting tube 2, image-capturing apparatus 3, transparent plate 4, bracing frame 5;
Image-capturing apparatus 3 is arranged on display device 1 back side, and infrared BPF. 31 is set in the image-capturing apparatus 3, is used to filter visible light and lets infrared light pass through.The coverage of image-capturing apparatus 3 is the viewing area of display device.
Transparent plate 4 is that clear glass is dull and stereotyped, and it is arranged on display device 1 front.The length and width of transparent plate 4 make transparent plate 4 surfaces exceed the viewing area of display device 1 all greater than the length and width of display device 1.
One side towards display device 1 on transparent plate 4 at least one end is provided with groove 41, and infrared transmitting tube 2 is arranged in the groove 41.Be provided with reflectance coating 42 in the side of transparent plate 4.The infrared light of infrared transmitting tube 2 emissions carries out total reflection in transparent plate 4 inside, and when infrared light propagated into transparent plate 4 side surface, because the reflex of reflectance coating 42, infrared light can be reflected back toward transparent plate 4 inside, repeats total reflection.
As shown in Figures 2 and 3, when touching object touch transparent plate 4 surfaces, can destroy the total reflection of infrared light, cause the leakage of light phenomenon, form hot spot on these transparent plate 4 surfaces.The image-capturing apparatus 3 that is positioned at display device 1 back side photographs the existence of hot spot, according to the position of this hot spot in the view picture photographic images, confirms the horizontal ordinate and the ordinate of touch point, thereby positions touching object.
As shown in Figure 4; In order to increase the brightness of touch objects hot spot, make it caught identification by image-capturing apparatus 3 more easily, to the display device one side groove 41 is set all in four end face of transparent plate 4; In each groove 41, all place infrared transmitting tube 2; The light ray energy of then carrying out total reflection in transparent plate 4 inside becomes big, and when touching object touch transparent plate 4 surfaces, it is big that the light ray energy of leaking out in the touch point becomes; The touch hot spot brightens, and is caught by image-capturing apparatus 3 more easily and locatees.
As shown in Figure 5; In order to prevent that IR from getting into the image-capturing apparatus 3 that is positioned at display device 1 back side by escaping in the transparent plate 4 and making the hot spot of touch objects be difficult to identification; To improve the bearing accuracy of touch objects; Opening part at groove 41 is provided with reflection horizon or light-absorption layer 411, corresponding to the zone outside display device 1 viewing area reflection horizon or light-absorption layer 43 is set on transparent plate 4 surfaces.The opening part of groove 41 is divided into towards the opening part of transparent plate 4 sides and the opening part that is intended for the transparent plate bottom surface, towards the reflection horizon of the opening part of transparent plate bottom surface or the surface that light-absorption layer 411 is arranged on bracing frame or be arranged on opening part separately.Reflection horizon or light-absorption layer are set make and on the one hand the IR energy is fully used by the light transparent plate 4 of can not escaping out, improved hot spot brightness, can not cause interference on the other hand, be easier to identification hot spot.
Groove 41 is the groove of rectangular recess, trapezoidal groove or other shapes.
As shown in Figure 6, because the emission of infraluminescence pipe 2 only has certain angle, in order to improve the energy that total reflection takes place on transparent plate 4 surfaces light; According to infraluminescence pipe 2 luminous energy angle distribution characteristics, infrared transmitting tube 2 is obliquely installed with respect to transparent plate 4, and the infrared transmitting tube 2 radiative planes of incidence are set to the inclined-plane; Be that the face that infrared transmitting tube 2 emission light are incident in the groove is set to the inclined-plane; Make the energy that total reflection takes place on transparent plate 4 surfaces strengthen, when touching object contact transparent plate 4 surfaces, it is big that the light ray energy of leaking out in the touch point becomes; Hot spot brightens, and helps to judge the position that touches object.
As shown in Figure 7; Because the emission of infraluminescence pipe 2 only has certain angle; Make full use of at the energy of transparent plate 4 surface generation total reflections and the light that infrared transmitting tube 2 is launched in order to improve light, infrared transmitting tube 2 vertically is provided with respect to transparent plate 4, and the infrared transmitting tube 2 radiative planes of incidence are set to the inclined-plane; Reflectance coating 42 is set on the inclined-plane, and the side near transparent plate 4 sides is provided with reflectance coating 42 in groove 41.
As shown in Figure 8, be a kind of structural representation that touches projection display equipment among the present invention.A kind of touch projection display equipment comprises projector 6, comprises above-mentioned touch positioning device, and wherein the display device in the touch positioning device 1 is a projection screen, and projector 8 is arranged on the projection screen back side.
Claims (10)
1. touch positioning device; Comprise display device, infrared transmitting tube and image-capturing apparatus, image-capturing apparatus is arranged on the display device back side, it is characterized in that; Comprise that also length and width are all greater than the transparent plate of display device length and width; Said transparent plate is arranged on the display device front, to the one side of display device groove is set at least one end face of transparent plate, and infrared transmitting tube is arranged in the groove.
2. touch positioning device according to claim 1 is characterized in that the side of said transparent plate is provided with reflectance coating.
3. touch positioning device according to claim 1 is characterized in that, at the opening part of groove reflection horizon or light-absorption layer is set, and corresponding to the zone outside the display device viewing area reflection horizon or light-absorption layer is set on the transparent plate surface.
4. touch positioning device according to claim 1 is characterized in that, is provided with in the side of display device to be used to support and the fixing bracing frame of transparent plate.
5. touch positioning device according to claim 1 is characterized in that, said groove is a rectangular recess.
6. touch positioning device according to claim 1 is characterized in that infrared transmitting tube is obliquely installed with respect to transparent plate, and the radiative plane of incidence of infrared transmitting tube is set to the inclined-plane.
7. touch positioning device according to claim 1; It is characterized in that infrared transmitting tube vertically is provided with respect to transparent plate, the radiative plane of incidence of infrared transmitting tube is set to the inclined-plane; Reflectance coating is set on the inclined-plane, and the side near the transparent plate side is provided with reflectance coating in groove.
8. touch positioning device according to claim 1 is characterized in that, is provided with the infrared BPF. that is used to filter visible light in the said image-capturing apparatus.
9. according to each described touch positioning device of claim 1 to 8, it is characterized in that said transparent plate is that clear glass is dull and stereotyped.
10. one kind touches projection display equipment, comprises projector, it is characterized in that also comprise the described touch positioning device of claim 1, the display device in the said touch positioning device is a projection screen, and projector is arranged on the projection screen back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100898862A CN102637097A (en) | 2012-03-30 | 2012-03-30 | Touch positioning device and touch projection display device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100898862A CN102637097A (en) | 2012-03-30 | 2012-03-30 | Touch positioning device and touch projection display device with same |
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| Publication Number | Publication Date |
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| CN102637097A true CN102637097A (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100898862A Pending CN102637097A (en) | 2012-03-30 | 2012-03-30 | Touch positioning device and touch projection display device with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978076A (en) * | 2014-04-03 | 2015-10-14 | 联想(北京)有限公司 | Infrared optical touch screen system and electronic equipment |
| CN113168083A (en) * | 2018-12-10 | 2021-07-23 | 环球城市电影有限责任公司 | Animated window system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101231450A (en) * | 2008-02-25 | 2008-07-30 | 陈伟山 | Multipoint and object touch panel arrangement as well as multipoint touch orientation method |
| CN201191341Y (en) * | 2008-04-08 | 2009-02-04 | 北京汇冠新技术有限公司 | Backlight module applied to infrared touch screen |
| CN101859206A (en) * | 2009-04-08 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | Touch display device |
| CN202661982U (en) * | 2012-03-30 | 2013-01-09 | 广东威创视讯科技股份有限公司 | Touch locating device and touch projection display device with same |
-
2012
- 2012-03-30 CN CN2012100898862A patent/CN102637097A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231450A (en) * | 2008-02-25 | 2008-07-30 | 陈伟山 | Multipoint and object touch panel arrangement as well as multipoint touch orientation method |
| CN201191341Y (en) * | 2008-04-08 | 2009-02-04 | 北京汇冠新技术有限公司 | Backlight module applied to infrared touch screen |
| CN101859206A (en) * | 2009-04-08 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | Touch display device |
| CN202661982U (en) * | 2012-03-30 | 2013-01-09 | 广东威创视讯科技股份有限公司 | Touch locating device and touch projection display device with same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978076A (en) * | 2014-04-03 | 2015-10-14 | 联想(北京)有限公司 | Infrared optical touch screen system and electronic equipment |
| CN104978076B (en) * | 2014-04-03 | 2019-04-26 | 联想(北京)有限公司 | Infrared optics touch screen system and electronic equipment |
| CN113168083A (en) * | 2018-12-10 | 2021-07-23 | 环球城市电影有限责任公司 | Animated window system |
| CN113168083B (en) * | 2018-12-10 | 2023-05-05 | 环球城市电影有限责任公司 | Cartoon window system |
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Application publication date: 20120815 |