CN102759773A - Infrared light guide screen - Google Patents
Infrared light guide screen Download PDFInfo
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- CN102759773A CN102759773A CN2012102485065A CN201210248506A CN102759773A CN 102759773 A CN102759773 A CN 102759773A CN 2012102485065 A CN2012102485065 A CN 2012102485065A CN 201210248506 A CN201210248506 A CN 201210248506A CN 102759773 A CN102759773 A CN 102759773A
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- light guide
- guide screen
- infrared
- light
- leaded light
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Abstract
The invention relates to an infrared light guide screen, and belongs to the field of optical devices. Each of four circumferential sides comprises a plurality of same-size paraboloids, wherein the included angle of each paraboloid and the lower surface of the light guide screen is 45 degrees, and the cross section of each paraboloid in the horizontal direction is in a parabola shape. When the infrared light guide screen is used for carrying out transmission of light rays, infrared emitting tubes arranged on the focal points of the paraboloids of the light guide screen emit the light rays to the paraboloids of the light guide screen, the emitted light rays reach the paraboloids on the opposite sides of the light guide screen after being totally reflected by the paraboloids and then are totally reflected to be focused on an infrared receiver. Compared with the prior art that only light rays vertical to the light guide screen can be transmitted to the infrared receivers, the light guide screen provided by the invention can transmit not only the light rays vertical to the light guide screen but also light rays inclined to the light guide screen to the infrared receiver so that the light guide screen can be made to be ultrathin without influencing the intensity of other signals.
Description
Technical field
The present invention relates to a kind of infrared leaded light screen, belong to the optical device field.
Background technology
In the prior art; The infrared light reflection face of infrared leaded light screen four edges is generally the plane; Like the patent No. is US8, and " ON A SUBSTRATE FORMED OR RESTING DISPLAYARRANGEMENT " is said for the patent of 068,101 B2; The infrared light reflection face of its leaded light screen is the plane horizontal by 45, and there is following shortcoming in such reflecting surface:
1. the leaded light screen can only be with the receiving end that after 45 ° of reflecting surface reflections, is transferred to opposite side perpendicular to the light of leaded light screen; In order to strengthen the reflection ray of infrared light as far as possible; Need to enlarge light path; Promptly increase the thickness of leaded light screen, so both increased the material cost of leaded light screen, and increased the weight of supporting product (like mobile phone, computer etc.);
2. if for attractive in appearance, economical and reduce the thickness of leaded light screen, the light path of its IR transmission will narrow down, thereby causes a little less than the light, is subject to external interference, influences the signal of receiving terminal.
In view of this, the inventor studies this, develops a kind of infrared leaded light screen, and this case produces thus.
Summary of the invention
The purpose of this invention is to provide the strong infrared leaded light screen of a kind of thin thickness, light transmission signal.
To achieve these goals, solution of the present invention is following:
A kind of infrared leaded light screen, four edges respectively comprises several parabolas of the same size around it, and said parabola and leaded light screen lower surface angle are 45 °, and parabolic horizontal direction xsect is parabola shaped.
When above-mentioned infrared leaded light screen carries out the infrared light transmission; Be installed in leaded light and shield the parabola that the infrared transmitting tube on the paraboloidal focus shields light directive leaded light; Emission light focuses on after the total reflection and arrives infrared remote receiver through arriving the parabola of leaded light screen opposite side after the parabolic total reflection.With can only the light transmission perpendicular to leaded light screen be compared to infrared remote receiver in the prior art; Leaded light screen of the present invention can not only be with shielding perpendicular to leaded light; And the light transmission that can will favour the conduit screen arrives infrared remote receiver; Therefore can the leaded light screen be accomplished very thinly, and not influence its signal intensity.
Figure of description
Fig. 1 is the infrared leaded light screen stereographic map of present embodiment;
Fig. 2 is the infrared leaded light screen light transmission cross-sectional view of present embodiment;
Fig. 3 is the infrared leaded light screen center branch light path vertical view of present embodiment.
Label declaration:
Leaded light screen 1; Parabolic 11; Lower surface 12;
Circuit board 2; Infrared transmitting tube 3; Infrared remote receiver 4.
Embodiment :
As shown in Figure 1, a kind of infrared leaded light screen 1, four edges comprises that respectively several are of the same size parabolic 11 around it, and it is 45 ° that said parabola shields lower surface 12 angles with leaded light, and parabolic 11 horizontal direction xsects are parabola shaped.
As shown in Figures 2 and 3; When above-mentioned infrared leaded light screen 1 is applied on the corollary apparatus (like infrared touch panel); The infrared transmitting tube 3 that is installed on the circuit board 2 all is positioned on the focus of said leaded light screen 1 parabolic 11 with infrared remote receiver 4; Infrared transmitting tube 3 is with the parabola 11 of light directive leaded light screen 1, and emission light arrives infrared remote receiver 4 again through arriving the parabola 11 of opposite side after parabolic 11 total reflections after the total reflection.
Because infrared transmitting tube 3 all is positioned on the focus of leaded light screen 1 parabolic 11 with infrared remote receiver 4; Can with all of infrared transmitting tube 3 emission arrive parabolic 33 light all the infrared leaded light of horizontal sheaf shield the parabola 11 of 1 opposite side, and all light that the parabola 11 of opposite side will receive all gather in the infrared remote receiver 4.With can only the light transmission of shielding 1 perpendicular to leaded light be compared to infrared remote receiver 4 in the prior art; The present invention can not only be with shielding 1 perpendicular to leaded light; And can will favour the light transmission of conduit screen 1 to infrared remote receiver 4, therefore can leaded light be shielded 1 and accomplish very thinly, and do not influence its signal intensity.
Leaded light of the present invention screen can be applied in the multiple device that needs leaded light and optically focused, like infrared touch panel.
The foregoing description and non-limiting product form of the present invention and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from patent category of the present invention to its suitable variation or modification of doing.
Claims (1)
1. one kind infrared leaded light shields, and it is characterized in that: four edges respectively comprises several parabolas of the same size around the said infrared leaded light screen, and said parabola and leaded light screen lower surface angle are 45 °, and parabolic horizontal direction xsect is parabola shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248506.5A CN102759773B (en) | 2012-07-18 | 2012-07-18 | Infrared light guide screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248506.5A CN102759773B (en) | 2012-07-18 | 2012-07-18 | Infrared light guide screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102759773A true CN102759773A (en) | 2012-10-31 |
| CN102759773B CN102759773B (en) | 2015-02-25 |
Family
ID=47054279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210248506.5A Expired - Fee Related CN102759773B (en) | 2012-07-18 | 2012-07-18 | Infrared light guide screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102759773B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104461177A (en) * | 2014-11-12 | 2015-03-25 | 江苏特思达电子科技股份有限公司 | Touch panel and display device |
| CN105867683A (en) * | 2016-03-25 | 2016-08-17 | 浙江工力宝隆科技有限公司 | Touch control system with intelligent recognition function and control method of touch control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599895A (en) * | 2001-11-02 | 2005-03-23 | 内奥诺德瑞典股份有限公司 | On a substrate formed or resting display arrangement |
| CN101859207A (en) * | 2009-04-08 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | Touch panel and electronic device applying same |
-
2012
- 2012-07-18 CN CN201210248506.5A patent/CN102759773B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599895A (en) * | 2001-11-02 | 2005-03-23 | 内奥诺德瑞典股份有限公司 | On a substrate formed or resting display arrangement |
| CN101859207A (en) * | 2009-04-08 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | Touch panel and electronic device applying same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104461177A (en) * | 2014-11-12 | 2015-03-25 | 江苏特思达电子科技股份有限公司 | Touch panel and display device |
| CN104461177B (en) * | 2014-11-12 | 2018-10-19 | 江苏特思达电子科技股份有限公司 | A kind of touch panel and display device |
| CN105867683A (en) * | 2016-03-25 | 2016-08-17 | 浙江工力宝隆科技有限公司 | Touch control system with intelligent recognition function and control method of touch control system |
| CN105867683B (en) * | 2016-03-25 | 2019-01-04 | 浙江宝隆信息科技股份有限公司 | A kind of touch-control system and its control method with intelligent recognition function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102759773B (en) | 2015-02-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150225 Termination date: 20170718 |