CN201548936U - Light source component for touch screen - Google Patents
Light source component for touch screen Download PDFInfo
- Publication number
- CN201548936U CN201548936U CN 200920222333 CN200920222333U CN201548936U CN 201548936 U CN201548936 U CN 201548936U CN 200920222333 CN200920222333 CN 200920222333 CN 200920222333 U CN200920222333 U CN 200920222333U CN 201548936 U CN201548936 U CN 201548936U
- Authority
- CN
- China
- Prior art keywords
- touch
- screen
- camera
- led
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The utility model discloses a light source component for touch screen, including a camera and at least two LED point-sources, characterized in that the primary optical axis of the at least two LED point-sources are at a same first plane, the first plane is parallel to the upper surface of the camera, the primary optical axis of the at least two LED point-sources are crossed only at a first crossing point, the straight-line located by the first crossing point and the optical centre of the lens is perpendicular to the touch screen. The shade region detected by the camera is in full accord with the actual screened region of the touch object in the utility model by improving the placing position of the LED point-sources, to improve the touch screen detection accuracy.
Description
Technical field
The utility model relates to the touch screen technology field, particularly a kind of light source assembly that is used for touch-screen
Background technology
Development along with multimedia information technology, people use human-computer interaction devices such as touch-screen more and more, touch-screen based on optical technology has obtained application more and more widely, as shown in Figure 1, structural representation for a kind of touch-screen of the prior art, this touch-screen is by framework 101, retroreflecting bar 102, first camera 103, second camera 104 and light-source system constitute, wherein light-source system comprises 4 identical LED (light emitting diode, light emitting diode) pointolite 105,106,107 and 108, LED pointolite 105, first camera 103 and LED pointolite 106 are in the same plane, and LED pointolite 105 and LED pointolite 106 lay respectively at the both sides of first camera 103.LED pointolite 107, second camera 104 and LED pointolite 108 also adopt said structure.As shown in Figure 1, when a touch object 109 touches touch-screen, part in the light that LED pointolite 105 the sends object 109 that is touched blocks, on retroreflecting bar 102, form a shadow region CD, part in the light that LED pointolite 106 the sends object 109 that is touched blocks, on retroreflecting bar 102, form a shadow region EF, the AB section is the zone that object 109 blocks and first camera 103 can't observe that is touched, as shown in Figure 2, the synoptic diagram of the shadow region that forms for the touch objects body.
There is following shortcoming at least in the light source that is used for touch-screen shown in Figure 1: shadow region EF connects together with shadow region CD and has formed a big shadow region ED, this shadow region ED for the camera actual detected to the shade that is used for determining touch location, and owing to the actual zone that causes camera to observe of blocking of touch object is AB, shadow region ED has reduced the accuracy of detection of touch-screen greater than AB as seen from Figure 2.
The utility model content
The utility model provides a kind of light source assembly that is used for touch-screen, comprise a camera and a LED pointolite, described LED pointolite is fixed on the upper surface of described camera, described camera is fixed on the touch-screen, and the straight line at the photocentre place of the photocentre of the lens of described LED pointolite and the lens of described camera is vertical with the plane at described touch-screen place.
Described LED pointolite is the infrared LED pointolite.
The utility model also provides a kind of light source assembly that is used for touch-screen, comprise a camera and at least two LED pointolites, the primary optical axis of described at least two LED pointolites is on same first plane, the upper surface of described first plane and described camera is parallel, the primary optical axis of described at least two LED pointolites only intersects at first intersection point, and the straight line at the photocentre place of the lens of described first intersection point and described camera is perpendicular to described touch-screen.
Described first plane is positioned on the upper surface of described camera.
The upper surface of described camera is close on described first plane.
Described first intersection point is arranged in any one the place ahead of lens of described at least two LED pointolites.
The distance of described first intersection point photocentre of the lens of any one in described at least two LED pointolites equates.
Described at least two LED pointolites are the infrared LED pointolite.
The utility model makes detected shadow region of camera and the touch actual area that object blocked in full accord by improving the placement location of LED pointolite, has improved the accuracy of detection of touch-screen.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model or prior art, to do to introduce simply to the accompanying drawing of required use in the utility model or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, 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 a kind of touch-screen of the prior art;
Fig. 2 is the synoptic diagram of the shadow region of touch objects body formation;
Fig. 3 is a kind of side view that is used for the light source assembly of touch-screen in the utility model;
Fig. 4 is a kind of front elevation that is used for the light source assembly of touch-screen among Fig. 3;
Fig. 5 is the synoptic diagram that uses the touch-screen of light source assembly shown in Figure 3 in the utility model;
Fig. 6 is a kind of structural representation that is used for the light source assembly of touch-screen in the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme in the utility model is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Be illustrated in figure 3 as a kind of side view that is used for the light source assembly of touch-screen in the utility model, this light source assembly comprises a LED pointolite 3000, LED pointolite 3000 is fixed on the upper surface of camera 4000, camera 4000 is fixed on the touch-screen 5000, LED pointolite 3000 front ends have lens 3001, camera 4000 has lens 4001, be illustrated in figure 4 as a kind of front elevation that is used for the light source assembly of touch-screen among Fig. 3, the straight line at the photocentre of the lens 3001 of LED pointolite 3000 and the photocentre place of the lens 4001 of camera 4000 is vertical with the plane at touch-screen 5000 places, and described LED pointolite can be the infrared LED pointolite.
Present embodiment provides optical radiation by using a LED pointolite, make the straight line at photocentre place of lens of the photocentre of lens of this LED pointolite and camera vertical with the plane at touch-screen place, be illustrated in figure 5 as the synoptic diagram of the touch-screen of the light source assembly shown in Figure 3 of use in the utility model, when a touch object 6000 is positioned at the touch area of touch-screen 5000, the actual area that camera 4000 detected shadow regions and touch object 6000 are blocked is in full accord, has improved the accuracy of detection of touch-screen 5000.
For large-sized touch-screen,, just need the light source that optical radiation is stronger, light distribution is bigger because the optical radiation that LED pointolite provides can not be satisfied the requirement of application.Be illustrated in figure 6 as a kind of structural representation that is used for the light source assembly of touch-screen in the utility model, this light source assembly is by LED pointolite 7100, LED pointolite 7200 and LED pointolite 7300 constitute, the primary optical axis of the lens 7101 of LED pointolite 7100, the primary optical axis of the primary optical axis of the lens 7201 of LED pointolite 7200 and the lens 7301 of LED pointolite 7300 is on same first plane, and this first plane is parallel with the upper surface of camera 8000, and this first plane is positioned on the upper surface of camera 8000, and the upper surface that camera 8000 is close on this first plane is better embodiment.The primary optical axis of the primary optical axis of the primary optical axis of the lens 7101 of LED pointolite 7100, the lens 7201 of LED pointolite 7200 and the lens 7301 of LED pointolite 7300 A (not drawing among the figure) that intersects at a point, and the photocentre of the lens of any one equates to the distance of this A in these three LED pointolites, this A is arranged in any one the place ahead of lens of these three LED pointolites, and the straight line at the photocentre place of the lens 8001 of this A and camera 8000 is perpendicular to plane, touch-screen place.In the present embodiment, LED pointolite 7100, LED pointolite 7200 and LED pointolite 7300 are identical LED pointolite, all can be the infrared LED pointolite.Only be that the light source assembly that is used for touch-screen that constitutes with 3 LED pointolites is an example in the present embodiment, wherein the quantity of LED pointolite is not the restriction to protection scope of the present invention, and as long as the quantity of LED pointolite in the present embodiment is greater than one.
The utility model makes detected shadow region of camera and the touch actual area that object blocked in full accord by improving the placement location of LED pointolite, has improved the accuracy of detection of touch-screen.
It will be appreciated by those skilled in the art that accompanying drawing is the synoptic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the utility model is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
Above-mentioned the utility model embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (8)
1. light source assembly that is used for touch-screen, comprise a camera and a LED pointolite, it is characterized in that, described LED pointolite is fixed on the upper surface of described camera, described camera is fixed on the touch-screen, and the straight line at the photocentre place of the photocentre of the lens of described LED pointolite and the lens of described camera is vertical with the plane at described touch-screen place.
2. the light source assembly that is used for touch-screen as claimed in claim 1 is characterized in that, described LED pointolite is the infrared LED pointolite.
3. light source assembly that is used for touch-screen, comprise a camera and at least two LED pointolites, it is characterized in that, the primary optical axis of described at least two LED pointolites is on same first plane, the upper surface of described first plane and described camera is parallel, the primary optical axis of described at least two LED pointolites only intersects at first intersection point, and the straight line at the photocentre place of the lens of described first intersection point and described camera is perpendicular to described touch-screen.
4. the light source assembly that is used for touch-screen as claimed in claim 3 is characterized in that, described first plane is positioned on the upper surface of described camera.
5. the light source assembly that is used for touch-screen as claimed in claim 4 is characterized in that the upper surface of described camera is close on described first plane.
6. the light source assembly that is used for touch-screen as claimed in claim 3 is characterized in that, described first intersection point is arranged in any one the place ahead of lens of described at least two LED pointolites.
7. the light source assembly that is used for touch-screen as claimed in claim 6 is characterized in that, the distance of described first intersection point photocentre of the lens of any one in described at least two LED pointolites equates.
8. as any described light source assembly that is used for touch-screen in the claim 3 to 7, it is characterized in that described at least two LED pointolites are the infrared LED pointolite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920222333 CN201548936U (en) | 2009-09-02 | 2009-09-02 | Light source component for touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920222333 CN201548936U (en) | 2009-09-02 | 2009-09-02 | Light source component for touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201548936U true CN201548936U (en) | 2010-08-11 |
Family
ID=42604112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920222333 Expired - Fee Related CN201548936U (en) | 2009-09-02 | 2009-09-02 | Light source component for touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201548936U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2524285A1 (en) * | 2010-01-14 | 2012-11-21 | SMART Technologies ULC | Interactive system with successively activated illumination sources |
| CN103389833A (en) * | 2012-05-10 | 2013-11-13 | 信泰光学(深圳)有限公司 | Light sensing type touch sensing device as well as light source module and optical lens of light sensing type touch sensing device |
| CN109143734A (en) * | 2010-12-02 | 2019-01-04 | 宁波舜宇光电信息有限公司 | A kind of optical touch screen camera shooting mould group and its manufacturing method |
-
2009
- 2009-09-02 CN CN 200920222333 patent/CN201548936U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2524285A1 (en) * | 2010-01-14 | 2012-11-21 | SMART Technologies ULC | Interactive system with successively activated illumination sources |
| EP2524285A4 (en) * | 2010-01-14 | 2014-06-04 | Smart Technologies Ulc | Interactive system with successively activated illumination sources |
| US9329700B2 (en) | 2010-01-14 | 2016-05-03 | Smart Technologies Ulc | Interactive system with successively activated illumination sources |
| CN109143734A (en) * | 2010-12-02 | 2019-01-04 | 宁波舜宇光电信息有限公司 | A kind of optical touch screen camera shooting mould group and its manufacturing method |
| CN103389833A (en) * | 2012-05-10 | 2013-11-13 | 信泰光学(深圳)有限公司 | Light sensing type touch sensing device as well as light source module and optical lens of light sensing type touch sensing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9063614B2 (en) | Optical touch screens | |
| US20140204048A1 (en) | Touch electrode device | |
| KR101956659B1 (en) | Non-contact input device and method | |
| CN102193686A (en) | Touch object and proximate object sensing apparatus by selectively radiating light | |
| KR200478512Y1 (en) | Touch panel | |
| KR101657216B1 (en) | Touch panel and touch position detection method of touch panel | |
| CN103455223A (en) | Touch sensing electrode structure and touch device | |
| US20130075765A1 (en) | Infrared light-emitting diode and touch screen | |
| CN102622133A (en) | Infrared touch screen for changing infrared light transmission paths and touch point recognizing method for infrared touch screen | |
| CN201548936U (en) | Light source component for touch screen | |
| US20150205442A1 (en) | Optical touch screen | |
| CN104517534A (en) | Image compensating element, display device and split display | |
| KR101615077B1 (en) | Input device | |
| CN201611477U (en) | Optical touch screen | |
| CN201803129U (en) | LED light source | |
| US8928616B2 (en) | Touch electrode device | |
| CN201622551U (en) | Large-size optical touch screen | |
| CN201465076U (en) | Light source for touch screen and touch screen | |
| WO2014197404A2 (en) | Optical touch screens | |
| CN103455211A (en) | Optical touch display panel | |
| CN104216040A (en) | Light guide plate and backlight module | |
| CN202372961U (en) | Infrared touch screen capable of changing transmission path of infrared light | |
| CN201628943U (en) | Frame for optical touch screen | |
| CN201489501U (en) | Device for fixing camera in touch screen and touch screen | |
| CN102163106B (en) | Touch sensing device and touch point detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Irtouch Systems Co.,Ltd. Document name: Notification to Pay the Fees |
|
| 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: 20100811 Termination date: 20180902 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Tang Haibo Document name: Notification of Termination of Patent Right |