CN203520360U - Light reflection type optical touch control device - Google Patents
Light reflection type optical touch control device Download PDFInfo
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- CN203520360U CN203520360U CN201320685148.4U CN201320685148U CN203520360U CN 203520360 U CN203520360 U CN 203520360U CN 201320685148 U CN201320685148 U CN 201320685148U CN 203520360 U CN203520360 U CN 203520360U
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- led lamp
- convex lens
- touch control
- type optical
- optical touch
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Abstract
The utility model discloses a light reflection type optical touch control device which comprises a plurality of LED light sources and at least one convex lens, wherein the at least one convex lens is arranged on light paths of the LED light sources and used for converging light rays emitted by the LED light sources; and the convex lens is arranged in front of the LED light sources and converges light emitted by the LED light sources, so that the brightness of light emitted by the LED light sources is improved, the light utilization rate is increased, and the illumination ranges of the LED light sources in the horizontal direction are enlarged to a certain extent. Through improvement of brightness of light illuminated to a light reflection film of the light reflection type optical touch control device by the LED light sources, the brightness of the peripheral light paths of the light reflection type optical touch control device is improved, and further, the touch control performance and the external light resistance of the light reflection type optical touch control device are improved.
Description
Technical field
The utility model relates to optical touch technical field, more particularly, relates to a kind of reflecting type optical touch control apparatus.
Background technology
Optical touch technology is to utilize plural infrared camera, and the shade that the object entering in touch area is produced under the effect of surrounding light path changes to flutter catches imaging, then by image, is processed with algorithm and is realized coordinate setting.The realization of surrounding light path, has two kinds of methods conventionally: a kind of is autoluminescence technology, at the two ends of the light-strip of optical touch control apparatus, places respectively LED lamp group, by LED lamp group, is coordinated formed surrounding light path with light-strip; Another kind of reflecting type technology,, in the position of the camera of optical touch control apparatus, LED lamp group is set, and place reflectorized material in the surrounding of touch area, design the position of all LED lamp groups, guarantee to utilize reflectorized material that the former road of light is reflexed to camera after LED lamp group emits beam to touch area, form surrounding light path.
Shown in Fig. 1 a and Fig. 1 b, Fig. 1 a is the vertical view of existing a kind of reflecting type optical touch control apparatus, and Fig. 1 b is the support turning inner structure schematic diagram of this reflecting type optical touch control apparatus.Touch area 1 surrounding of reflecting type optical touch control apparatus is provided with four reflective membranes 2, in the support turning 3 of reflecting type optical touch control apparatus, be provided with a camera 31, described camera 31 is positioned at flex point place, the both sides (being both sides, support turning) that are positioned at flex point are respectively arranged with LED lamp source, 32, two, a LED lamp source and irradiate respectively the vertical corresponding reflective membrane 2 of its place backing positions.The brightness of the surrounding light path of existing reflecting type optical touch control apparatus is low, makes the touch-control performance of reflecting type optical touch control apparatus and anti-ambient light performance low.
Utility model content
In view of this, the utility model provides a kind of reflecting type optical touch control apparatus, and the brightness of its surrounding light path is high, has improved touch-control performance and the anti-ambient light performance of reflecting type optical touch control apparatus.
For achieving the above object, the utility model provides following technical scheme:
A reflecting type optical touch control apparatus, comprising:
A plurality of LED lamps source, described LED lamp source comprises at least one LED lamp;
At least one is arranged in the light path in described LED lamp source, the convex lens that the light that described LED lamp source is sent is assembled.
Preferably, described convex lens are strip convex lens.
Preferably, described convex lens are circular cylindrical projection lens, elliptical cylinder-shape convex lens or plano-convex lens.
Preferably, described convex lens are resin convex lens or glass convex lens.
Preferably, described LED lamp source comprises a LED lamp, and the quantity of described convex lens is one, and described convex lens are arranged in the light path of described LED lamp.
Preferably, described LED lamp source comprises a plurality of LED lamps, and described a plurality of LED lamp is along setting gradually on the flex point bearing of trend of the described reflecting type optical touch control apparatus at its place, and the quantity of described convex lens is one, and described convex lens are arranged in the light path of described a plurality of LED lamps simultaneously.
Preferably, described LED lamp source comprises a plurality of LED lamps, and described a plurality of LED lamp is along setting gradually on the flex point bearing of trend of the described reflecting type optical touch control apparatus at its place, and the quantity of described convex lens is identical with the quantity of described LED lamp, the corresponding described convex lens of LED lamp described in each.
Preferably, described LED lamp source comprises a plurality of LED lamps, and described a plurality of LED lamp is along setting gradually on the flex point bearing of trend of the described reflecting type optical touch control apparatus at its place, and the quantity of described convex lens is less than the quantity of described LED lamp, a corresponding described LED lamp of described convex lens.
Compared with prior art, technical scheme provided by the utility model has the following advantages:
Reflecting type optical touch control apparatus provided by the utility model, comprises a plurality of LED lamps source, and at least one is arranged in the light path in LED lamp source, the convex lens that the light that LED lamp source is sent is assembled.Convex lens are arranged on to the place ahead, LED lamp source, by convex lens, assemble the light that send in LED lamp source, not only improved the brightness of the light sending in LED lamp source, improved the utilization factor of light, and expanded to a certain extent the range of exposures of the horizontal direction in LED lamp source.By improving LED lamp source, be irradiated to the brightness of the reflective membrane of reflecting type optical touch control apparatus, realize the raising of brightness of the surrounding light path of reflecting type optical touch control apparatus, and then improved touch-control performance and the anti-ambient light performance of reflecting type optical touch control apparatus.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 a is the vertical view of existing a kind of reflecting type optical touch control apparatus;
Fig. 1 b is the structural representation in the support turning of reflecting type optical touch control apparatus in Fig. 1 a;
Structural representation in the support turning of a kind of reflecting type optical touch control apparatus that Fig. 2 provides for the embodiment of the present application;
LED lamp and convex lens distribution schematic diagram that Fig. 3 a-3e provides for the embodiment of the present application.
Embodiment
As described in background, the brightness of the surrounding light path of existing reflecting type optical touch control apparatus is low, makes the touch-control performance of reflecting type optical touch control apparatus and anti-ambient light performance low.Inventor studies discovery, and existing reflecting type optical touch control apparatus is all directly to adopt LED lamp as light source, and the brightness that improves surrounding light path can only be by increasing the quantity of LED lamp or the power of raising LED lamp.The powering mode of reflecting type optical touch control apparatus is substantially all USB powering mode, has limited the lifting of LED lamp power; And be subject to the restriction of product structure, the quantity of the LED lamp in each LED lamp source is restricted, therefore, the brightness of the surrounding light path of existing reflecting type optical touch control apparatus is low, makes the touch-control performance of reflecting type optical touch control apparatus and anti-ambient light performance low.
Based on this, the utility model provides a kind of reflecting type optical touch control apparatus, and the problems referred to above that exist to overcome prior art, comprising:
A plurality of LED lamps source, described LED lamp source comprises at least one LED lamp;
At least one is arranged in the light path in described LED lamp source, the convex lens that the light that described LED lamp source is sent is assembled.
Reflecting type optical touch control apparatus provided by the utility model, comprises a plurality of LED lamps source, and at least one is arranged in the light path in LED lamp source, the convex lens that the light that LED lamp source is sent is assembled.Convex lens are arranged on to the place ahead, LED lamp source, by convex lens, assemble the light that send in LED lamp source, not only improved the brightness of the light sending in LED lamp source, improved the utilization factor of light, and expanded to a certain extent the range of exposures of the horizontal direction in LED lamp source.By improving LED lamp source, be irradiated to the brightness of the reflective membrane of reflecting type optical touch control apparatus, realize the raising of brightness of the surrounding light path of reflecting type optical touch control apparatus, and then improved touch-control performance and the anti-ambient light performance of reflecting type optical touch control apparatus.
Be more than core concept of the present utility model, for above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, embodiment of the present utility model be described in detail.
A lot of details have been set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that, so the utility model is not subject to the restriction of following public specific embodiment.
Secondly, the utility model is described in detail in conjunction with schematic diagram, when the utility model embodiment is described in detail in detail; for ease of explanation; the sectional view that represents device architecture can be disobeyed general ratio and be done local amplification, and described schematic diagram is example, and it should not limit the scope of the utility model protection at this.The three-dimensional space that should comprise in addition, length, width and the degree of depth in actual fabrication.
The present embodiment provides a kind of reflecting type optical touch control apparatus, comprises a plurality of LED lamps source; And at least one is arranged in the light path in described LED lamp source, the convex lens that the light that described LED lamp source is sent is assembled.
The convex lens that the present embodiment provides are strip convex lens, and strip convex lens can expand the range of exposures of the horizontal direction in LED lamp source to greatest extent.Strip convex lens can be the biconvex lens of strip, such as cylindrical lens, elliptical cylinder-shape lens etc.; Or be the plano-convex lens of strip, the lens that one side is plane for convex surface, another side.The convex lens that the present embodiment provides are resin convex lens or glass convex lens.
As shown in Figure 2, structural representation in the support turning of a kind of reflecting type optical touch control apparatus providing for the embodiment of the present application, in the support turning of optical touch control apparatus, comprise port and the camera 24 of wiring board 21, LED lamp source 22, convex lens 23, camera 24 is infrared camera.
Wherein, LED lamp source 22 is all electrically connected to wiring board 21 with camera 24, camera 24 is arranged at flex point place, and the both sides (being both sides, support turning) that are positioned at flex point are respectively arranged with LED lamp source, 22, two, a LED lamp source and irradiate respectively the vertical corresponding reflective membrane of its place backing positions.
LED lamp source 22 can comprise a LED lamp, and the quantity of convex lens is also one, convex lens 23 are arranged in the light path in LED lamp source 22, and the light that send in LED lamp source 22, by convex lens 23, converging is that a light belt is irradiated on the reflective membrane corresponding with it.Described in figure 3a, LED lamp source comprises a LED lamp 221, and convex lens 23 are arranged on the place ahead of LED lamp 221, and the light that LED lamp 221 is sent is irradiated to the reflective membrane corresponding with it after assembling.
Or LED lamp source 22 comprises a plurality of LED lamps, and a plurality of LED lamp sets gradually along the flex point bearing of trend of the reflecting type optical touch control apparatus at its place, and the quantity of convex lens 23 is one, and convex lens 23 are arranged in the light path of a plurality of LED lamps simultaneously.Shown in figure 3b, LED lamp source 22 comprises two LED lamps 221, and the quantity of convex lens 23 is one, and convex lens 23 are arranged on before two LED lamps 221 simultaneously, and the light simultaneously two LED lamps being sent is assembled.Shown in 3c, LED lamp source comprises three LED lamps 221, and the quantity of convex lens 23 is one, and convex lens 23 are arranged on before three LED lamps 221 simultaneously, and the light simultaneously three LED lamps being sent is assembled.
Or LED lamp source 22 comprises a plurality of LED lamps, and a plurality of LED lamp sets gradually along the flex point bearing of trend of the reflecting type optical touch control apparatus at its place, and the quantity of convex lens 23 is identical with the quantity of LED lamp, the corresponding convex lens 23 of each LED lamp.Shown in figure 3d, LED lamp source comprises two LED lamps 221, the quantity of convex lens 23 is also two, is provided with convex lens 23 before each LED lamp 221, and each convex lens 23 is assembled respectively and is all converted into a light belt after the light that its corresponding LED lamp 221 sends and irradiates reflective membrane.
Or LED lamp source 22 comprises a plurality of LED lamps, and a plurality of LED lamp sets gradually along the flex point bearing of trend of the reflecting type optical touch control apparatus at its place, and the quantity of convex lens 23 is less than the quantity of LED lamp, a corresponding LED lamp of convex lens 23.Shown in figure 3e, LED lamp source comprises three LED lamps, but the quantity of convex lens 23 is two.Before wherein only having two LED lamps, be respectively arranged with convex lens, the LED lamp of convex lens and the LED lamp acting in conjunction that two are provided with convex lens be not set, the reflective membrane that irradiation LED lamp source is corresponding.
It should be noted that, the just the most basic position relationship that the present embodiment provides, convex lens are arranged in the light path in LED lamp source.But the angle of putting between concrete LED lamp source and convex lens, and both distances, need to design according to the structure of actual reflecting type optical touch control apparatus.
The reflecting type optical touch control apparatus that the present embodiment provides, comprises a plurality of LED lamps source, and at least one is arranged in the light path in LED lamp source, the convex lens that the light that LED lamp source is sent is assembled.Convex lens are arranged on to the place ahead, LED lamp source, by convex lens, assemble the light that send in LED lamp source, not only improved the brightness of the light sending in LED lamp source, improved the utilization factor of light, and expanded to a certain extent the range of exposures of the horizontal direction in LED lamp source.
And by improving LED lamp source, be irradiated to the brightness of the reflective membrane of reflecting type optical touch control apparatus, realize the raising of brightness of the surrounding light path of reflecting type optical touch control apparatus, and then improved touch-control performance and the anti-ambient light performance of reflecting type optical touch control apparatus.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a reflecting type optical touch control apparatus, is characterized in that, comprising:
A plurality of LED lamps source, described LED lamp source comprises at least one LED lamp;
At least one is arranged in the light path in described LED lamp source, the convex lens that the light that described LED lamp source is sent is assembled.
2. reflecting type optical touch control apparatus according to claim 1, is characterized in that, described convex lens are strip convex lens.
3. reflecting type optical touch control apparatus according to claim 2, is characterized in that, described convex lens are the plano-convex lens of circular cylindrical projection lens, elliptical cylinder-shape convex lens or strip.
4. reflecting type optical touch control apparatus according to claim 1, is characterized in that, described convex lens are resin convex lens or glass convex lens.
5. reflecting type optical touch control apparatus according to claim 1, is characterized in that, described LED lamp source comprises a LED lamp, and the quantity of described convex lens is one, and described convex lens are arranged in the light path of described LED lamp.
6. reflecting type optical touch control apparatus according to claim 1, it is characterized in that, described LED lamp source comprises a plurality of LED lamps, and described a plurality of LED lamp is along setting gradually on the flex point bearing of trend of the described reflecting type optical touch control apparatus at its place, the quantity of described convex lens is one, and described convex lens are arranged in the light path of described a plurality of LED lamps simultaneously.
7. reflecting type optical touch control apparatus according to claim 1, it is characterized in that, described LED lamp source comprises a plurality of LED lamps, and described a plurality of LED lamp is along setting gradually on the flex point bearing of trend of the described reflecting type optical touch control apparatus at its place, the quantity of described convex lens is identical with the quantity of described LED lamp, the corresponding described convex lens of LED lamp described in each.
8. reflecting type optical touch control apparatus according to claim 1, it is characterized in that, described LED lamp source comprises a plurality of LED lamps, and described a plurality of LED lamp is along setting gradually on the flex point bearing of trend of the described reflecting type optical touch control apparatus at its place, the quantity of described convex lens is less than the quantity of described LED lamp, a corresponding described LED lamp of described convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685148.4U CN203520360U (en) | 2013-10-31 | 2013-10-31 | Light reflection type optical touch control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685148.4U CN203520360U (en) | 2013-10-31 | 2013-10-31 | Light reflection type optical touch control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203520360U true CN203520360U (en) | 2014-04-02 |
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ID=50379261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320685148.4U Expired - Fee Related CN203520360U (en) | 2013-10-31 | 2013-10-31 | Light reflection type optical touch control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203520360U (en) |
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2013
- 2013-10-31 CN CN201320685148.4U patent/CN203520360U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20191031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |