CN102117155A - Optical touch screen with concave surface - Google Patents
Optical touch screen with concave surface Download PDFInfo
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- CN102117155A CN102117155A CN 201110049536 CN201110049536A CN102117155A CN 102117155 A CN102117155 A CN 102117155A CN 201110049536 CN201110049536 CN 201110049536 CN 201110049536 A CN201110049536 A CN 201110049536A CN 102117155 A CN102117155 A CN 102117155A
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- touch panel
- touch screen
- concave surface
- optical touch
- surface optical
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Abstract
The invention discloses an optical touch screen with one concave surface, which comprises a frame, an optical sensor, a light source, a retroreflective bar and a touch panel, wherein the surface of the touch control surface is downward-convex. Compared with the prior art, the optical touch screen has the following benefits that as the touch panel with one downward-convex surface is mounted, a part of light rays is reflected to the retroreflective bar by the touch panel, so that the energy of retroreflective light is enhanced. Therefore, the optical touch screen with one concave surface has higher sensibility and detection precision.
Description
Technical field
The present invention relates to a kind of touch-screen, relate in particular to a kind of concave surface optical touch screen.
Background technology
Along with Development of Multimedia Technology, the touch-screen that is used to realize man-machine interaction obtains application more and more widely.The touching technique of current domestic main flow is when based on infrared, surface acoustic wave and resistance screen, but these several technology also all exist flaw, and clicking as the sound wave screen needs dynamics, resistance screen unstable properties or the like.In recent years, the appearance of concave surface optical touch screen has solved the difficult problem of numerous touch-screens substantially, and its reaction velocity is fast, and is highly sensitive, and required touching intensity is little.Fig. 1 is the structural representation of existing a kind of concave surface optical touch screen, described concave surface optical touch screen comprises framework 101, optical sensor 102, light source 103, retroreflecting bar 104 and touch panel 105, described framework 101 is a rectangular frame, is connected in sequence by first edge 1011, second edge 1012, the 3rd edge 1013 and the 4th edge 1014.When striking takes place in touch objects 106 on touch panel 105, will stop the light 107 that light source 103 is sent, on retroreflecting bar 104, produce shade 108, optical sensor 102 is analyzed the position that shade 108 just can calculate touch objects 106 places.Under perfect condition, described touch panel 105 is levels, but under actual conditions, described touch panel 105 generally all has uneven, is difficult to the horizontality that reaches desirable.Please participate in Fig. 4 a, when described touch panel 105 surperficial evaginations, part light 109 is reflected to outside the retroreflecting bar 104, and the luminous energy that usable reflection returns is just very weak.The luminous energy that reflection returns is low, signal just a little less than, make sensitivity of touch screen not high, accuracy of detection is low.
Summary of the invention
Embodiment of the invention technical matters to be solved is, a kind of sensitivity, concave surface optical touch screen that accuracy of detection is high are provided.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of concave surface optical touch screen, comprises framework, optical sensor, light source, retroreflecting bar and touch panel, and wherein, the surface of described touch panel is to lower recess.
Further, the centre of surface of described touch panel is to lower recess, the edge level, and the described edge of mind-set from described, all the other positions evenly draws high.
Further, the center on described touch panel surface is than the low 0.5mm to 5mm of marginal position.
Further, described touch panel is made by honeycomb aluminium sheet material.
Further, described touch panel is formed by the acrylic board material.
Further, described touch panel is formed by the tempered glass material.
Further, the touch panel of described tempered glass, when the manufacturing process tempering cooled off, the upper surface air pressure of described tempered glass was 920 ± 10MP, lower surface air pressure is 880 ± 10MP.
Implement the embodiment of the invention, has following beneficial effect: because the touch panel of surface to lower recess has been installed, part light is reflexed to the retroreflecting bar by described touch panel, strengthen the energy of the light of retroreflecting, made optical touch screen of the present invention have higher sensitivity and accuracy of detection.Compare particular matter being set on the retroreflecting bar or the technical scheme of special construction with the energy of the light of raising retroreflecting being set of other, the scheme of present embodiment is simple, has obtained unforeseeable technique effect.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is one embodiment of the present of invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of existing concave surface optical touch screen;
Fig. 2 is an example structure synoptic diagram of concave surface optical touch screen of the present invention;
Fig. 3 is the structural representation of the touch panel of the described concave surface optical touch screen of Fig. 2;
Fig. 4 a is that the light reflection in actual applications of existing concave surface optical touch screen returns synoptic diagram;
Fig. 4 b is that concave surface optical touch screen of the present invention light reflection in actual applications returns synoptic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is an one embodiment of the invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of concave surface optical touch screen, below in conjunction with Fig. 2 to Fig. 4 b the embodiment of this concave surface optical touch screen is described.
Fig. 2 is the first example structure synoptic diagram of concave surface optical touch screen of the present invention.As shown in Figure 2, the structure of the concave surface optical touch screen 1 of present embodiment comprises:
Concrete, see also Fig. 3, be the structural representation of the touch panel 15 of concave surface optical touch screen of the present invention.As shown in Figure 3, the centre of surface 151 of described touch panel 15 is to lower recess, edge 152 levels, and evenly draw high to described edge 152 from described center 151 at all the other positions.Preferably, 151 positions, center on described touch panel 15 surfaces are than marginal position 152 low 0.5mm to 5mm, to obtain reflecting effect preferably.
Please in conjunction with referring to Fig. 4 a and Fig. 4 b, Fig. 4 a returns synoptic diagram for the light reflection in actual applications of existing concave surface optical touch screen; Fig. 4 b is that concave surface optical touch screen of the present invention light reflection in actual applications returns synoptic diagram.
Shown in Fig. 4 a, when described touch panel 105 surperficial evaginations, the part light 109 that light source 103 sends is reflexed to outside the retroreflecting bar 104 by described touch panel 105, and it is just very weak that usable reflection returns the luminous energy of described optical sensor 102.The luminous energy that reflection returns is low, signal just a little less than, make sensitivity of touch screen not high, accuracy of detection is low.
Shown in Fig. 4 b, because the touch panel 15 of surface to lower recess has been installed, the part light 153 that light source 13 sends is reflexed to described retroreflecting bar 14 by described touch panel 15, again by the described optical sensor 12 of described retroreflecting bar 14 reflected backs, has strengthened the energy of the light of retroreflecting.The luminous energy height that reflection returns, signal are just strong, make sensitivity of touch screen improve, and accuracy of detection improves.
Concrete, described touch panel 15 is formed by honeycomb aluminium sheet material or acrylic board material.
Preferably, described touch panel 15 is formed by the tempered glass material.Described tempered glass is not usual normal process, notes CONTROL PROCESS during production, makes its centre to lower recess.Control method is: when described tempered glass tempering cooled off, two surfaces were provided with difference to the blast pressure that blows up and down, and controlling its upper surface air pressure is 920 ± 10MP, and lower surface air pressure is 880 ± 10MP, and then described tempered glass is to lower recess.
Implement the embodiment of the invention, has following beneficial effect: because the touch panel of surface to lower recess has been installed, part light is reflexed to the retroreflecting bar by described touch panel, strengthen the energy of the light of retroreflecting, made optical touch screen of the present invention have higher sensitivity and accuracy of detection.Compare particular matter being set on the retroreflecting bar or the technical scheme of special construction with the energy of the light of raising retroreflecting being set of other, the scheme of present embodiment is simple, has obtained unforeseeable technique effect.
Above disclosed is preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (7)
1. a concave surface optical touch screen comprises framework, optical sensor, light source, retroreflecting bar and touch panel, it is characterized in that the surface of described touch panel is to lower recess.
2. concave surface optical touch screen according to claim 1 is characterized in that: the centre of surface of described touch panel is to lower recess, the edge level, and the described edge of mind-set from described, all the other positions evenly draws high.
3. concave surface optical touch screen according to claim 2 is characterized in that: the center on described touch panel surface is than the low 0.5mm to 5mm of marginal position.
4. concave surface optical touch screen according to claim 2 is characterized in that: described touch panel is made by honeycomb aluminium sheet material.
5. concave surface optical touch screen according to claim 2 is characterized in that: described touch panel is formed by the acrylic board material.
6. concave surface optical touch screen according to claim 2 is characterized in that: described touch panel is formed by the tempered glass material.
7. concave surface optical touch screen according to claim 6 is characterized in that: the touch panel of described tempered glass, and when the manufacturing process tempering cooled off, the upper surface air pressure of described tempered glass was 920 ± 10MP, lower surface air pressure is 880 ± 10MP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110049536 CN102117155A (en) | 2011-03-02 | 2011-03-02 | Optical touch screen with concave surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110049536 CN102117155A (en) | 2011-03-02 | 2011-03-02 | Optical touch screen with concave surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102117155A true CN102117155A (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110049536 Pending CN102117155A (en) | 2011-03-02 | 2011-03-02 | Optical touch screen with concave surface |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615042A (en) * | 2013-11-28 | 2014-03-05 | 化工部长沙设计研究院 | Network type seepage discharging device in transverse direction, longitudinal direction and vertical direction |
| WO2015120003A1 (en) * | 2014-02-07 | 2015-08-13 | Enovate Medical Llc | Work platform for a wheeled medical cart |
| CN110114737A (en) * | 2016-12-07 | 2019-08-09 | 平蛙实验室股份公司 | Improved touching device |
| US11256371B2 (en) | 2017-09-01 | 2022-02-22 | Flatfrog Laboratories Ab | Optical component |
| US11281338B2 (en) | 2017-03-28 | 2022-03-22 | Flatfrog Laboratories Ab | Touch sensing apparatus and method for assembly |
| US11567610B2 (en) | 2018-03-05 | 2023-01-31 | Flatfrog Laboratories Ab | Detection line broadening |
| US11740741B2 (en) | 2017-02-06 | 2023-08-29 | Flatfrog Laboratories Ab | Optical coupling in touch-sensing systems |
| US11893189B2 (en) | 2020-02-10 | 2024-02-06 | Flatfrog Laboratories Ab | Touch-sensing apparatus |
| US11943563B2 (en) | 2019-01-25 | 2024-03-26 | FlatFrog Laboratories, AB | Videoconferencing terminal and method of operating the same |
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| CN101201710A (en) * | 2007-05-16 | 2008-06-18 | 丁小乐 | Optical mouse with embedded mouse pad |
| CN101650906A (en) * | 2009-04-21 | 2010-02-17 | 上海杰派展示制品有限公司 | Method and device of virtual space stereo imaging |
| CN201489500U (en) * | 2009-08-27 | 2010-05-26 | 北京汇冠新技术股份有限公司 | Touch screen |
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| CN101201710A (en) * | 2007-05-16 | 2008-06-18 | 丁小乐 | Optical mouse with embedded mouse pad |
| CN101650906A (en) * | 2009-04-21 | 2010-02-17 | 上海杰派展示制品有限公司 | Method and device of virtual space stereo imaging |
| CN201489500U (en) * | 2009-08-27 | 2010-05-26 | 北京汇冠新技术股份有限公司 | Touch screen |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615042A (en) * | 2013-11-28 | 2014-03-05 | 化工部长沙设计研究院 | Network type seepage discharging device in transverse direction, longitudinal direction and vertical direction |
| WO2015120003A1 (en) * | 2014-02-07 | 2015-08-13 | Enovate Medical Llc | Work platform for a wheeled medical cart |
| US11868568B2 (en) | 2016-12-07 | 2024-01-09 | Flatfrog Laboratories Ab | Touch device |
| US11914819B2 (en) | 2016-12-07 | 2024-02-27 | Flatfrog Laboratories | Touch device |
| US11281335B2 (en) * | 2016-12-07 | 2022-03-22 | Flatfrog Laboratories Ab | Touch device |
| JP2020512607A (en) * | 2016-12-07 | 2020-04-23 | フラットフロッグ ラボラトリーズ アーベーＦｌａｔＦｒｏｇ Ｌａｂｏｒａｔｏｒｉｅｓ ＡＢ | Improved touch device |
| JP2022088506A (en) * | 2016-12-07 | 2022-06-14 | フラットフロッグ ラボラトリーズ アーベー | Improved touch device |
| JP7165454B2 (en) | 2016-12-07 | 2022-11-04 | フラットフロッグ ラボラトリーズ アーベー | Improved touch device |
| US11907480B2 (en) | 2016-12-07 | 2024-02-20 | Flatfrog Laboratories Ab | Touch device |
| CN110114737A (en) * | 2016-12-07 | 2019-08-09 | 平蛙实验室股份公司 | Improved touching device |
| US11740741B2 (en) | 2017-02-06 | 2023-08-29 | Flatfrog Laboratories Ab | Optical coupling in touch-sensing systems |
| US11281338B2 (en) | 2017-03-28 | 2022-03-22 | Flatfrog Laboratories Ab | Touch sensing apparatus and method for assembly |
| US11966545B2 (en) | 2017-03-28 | 2024-04-23 | Flatfrog Laboratories Ab | Touch sensing apparatus and method for assembly |
| US11650699B2 (en) | 2017-09-01 | 2023-05-16 | Flatfrog Laboratories Ab | Optical component |
| US11256371B2 (en) | 2017-09-01 | 2022-02-22 | Flatfrog Laboratories Ab | Optical component |
| US11567610B2 (en) | 2018-03-05 | 2023-01-31 | Flatfrog Laboratories Ab | Detection line broadening |
| US11943563B2 (en) | 2019-01-25 | 2024-03-26 | FlatFrog Laboratories, AB | Videoconferencing terminal and method of operating the same |
| US11893189B2 (en) | 2020-02-10 | 2024-02-06 | Flatfrog Laboratories Ab | Touch-sensing apparatus |
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Application publication date: 20110706 |