CN203453994U - Light guiding device for implementing light path of optical touch panel and optical touch panel - Google Patents
Light guiding device for implementing light path of optical touch panel and optical touch panel Download PDFInfo
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- CN203453994U CN203453994U CN201320422589.5U CN201320422589U CN203453994U CN 203453994 U CN203453994 U CN 203453994U CN 201320422589 U CN201320422589 U CN 201320422589U CN 203453994 U CN203453994 U CN 203453994U
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- light
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- guiding device
- optical touch
- led lamp
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Abstract
The utility model discloses a light guiding device for implementing a light path of an optical touch panel and the optical touch panel. The light guiding device for implementing the light path of the optical touch panel comprises a closed shell, a light guiding strip, focusing lenses and LED lamp modules, wherein the light guiding strip is arranged in an inner cavity of the closed shell, the focusing lenses are arranged at the two ends of the light guiding strip respectively, the LED lamp modules are arranged at the two ends of the closed shell respectively, the focusing lenses and the LED lamp modules are arranged in the closed shell, light emitted by the LED lamp modules generate direct beams through the focusing lenses, and the direct beams enter the light guiding strip. According to the light guiding device for implementing the light path of the optical touch panel and the optical touch panel, due to the facts that the light emitted by the LED lamp modules generate the direct beams through the focusing lenses, and the LED lamp modules are placed in the lightproof closed shell, loss of the light cannot happen, when the direct beams are transmitted in the light guiding strip, attenuation can be reduced, the brightness of the portion, in the middle area of the light guiding strip, of the light path can be consistent with the brightness of the portions, at the two ends of the light guiding strip, of the light path, the brightness and the consistency of the light guiding strip can be improved, and locating accuracy can be ensured.
Description
Technical field
The utility model relates to optical touch technical field, in particular, relates to a kind of guiding device and optical touch screen of realizing optical touch screen light path.
Background technology
At present, it is mainly to utilize light source directly to inject a kind of light-strip that the light path of optical touch technical products realizes, thereby make this light-strip send the self-luminous technology of required light, at light-strip two ends, directly add LED lamp as light source, light is injected light-strip, make light-strip send required light formation camera from light face and flutter the light path of catching image, therefore, the brightness of light-strip is most important on the impact of touch-control properties of product.
At the LED of above-mentioned use lamp, there is the problem of incident angle, light is decayed because multiple reflections meeting is quick in light-strip transmission, produce light losing, a little less than causing the light path brightness of light-strip zone line, be difficult to accomplish high brightness and the uniformity of light-strip, concrete principle, ask for an interview accompanying drawing 1, the structural representation of realizing for the light path of light-strip in light touch technology product in prior art, because LED light source is arranged on light-strip both sides, light is through light-strip internal reflection decay, cause light-strip two ends and middle brightness inconsistent, there is the dark situation in bright centre, two ends, and optical touch technology is to use camera to flutter to catch the shade of light path to change to produce image calculation shelter position, the dark place of light path can affect positioning precision.
Therefore, the utility model provides a kind of guiding device and optical touch screen of realizing optical touch screen light path, a little less than in solution prior art, light attenuation causes the light path brightness of light-strip zone line, be difficult to accomplish high brightness and the uniformity of light-strip, thereby raising positioning precision is those skilled in the art's problem demanding prompt solutions.
Utility model content
In view of this, the utility model provides a kind of guiding device and optical touch screen of realizing optical touch screen light path, a little less than in solution prior art, light attenuation causes the light path brightness of light-strip zone line, be difficult to accomplish high brightness and the uniformity of light-strip, thereby improve the problem of positioning precision.
For achieving the above object, the utility model provides following technical scheme:
A kind of guiding device of realizing optical touch screen light path, comprise: closure casing, be arranged on light-strip in described closure casing inner chamber, be arranged on the amasthenic lens at described light-strip two ends and be arranged on the LED lamp assembly at described closure casing two ends, described amasthenic lens and described LED lamp assembly are arranged in described closure casing, and described LED lamp assembly emits beam and after described amasthenic lens, produces direct beam and enter in described light-strip.
Wherein, described closure casing is lighttight closed structure.
Wherein, described light-strip comprises: leaded light carrier, reflective sheeting and heat-shrink tube, and described reflective sheeting is U-shaped, an opening is exiting surface.
Wherein, the bar that the cross section of described leaded light carrier is square or rectangular, its material is PMMA material, its covering surface or parcel reflectorized material.
Wherein, the length of described reflective sheeting and/or heat-shrink tube is longer than described leaded light carrier, forms the cavity that holds light source, break-even the entering in described leaded light carrier of light that described light source is sent.
Wherein, described leaded light carrier is provided with white MARK point as diffuse reflection light source back to exiting surface outer surface.
The invention also discloses a kind of optical touch screen, comprising: the display unit of display frame, also comprises the guiding device of realizing optical touch screen light path described above.
Known via above-mentioned technical scheme, compared with prior art, the utility model openly provides a kind of guiding device and optical touch screen of realizing optical touch screen light path, this guiding device comprises: closure casing, be arranged on light-strip in described closure casing inner chamber, be arranged on the amasthenic lens at described light-strip two ends and be arranged on the LED lamp assembly at described closure casing two ends, described amasthenic lens and described LED lamp assembly are arranged in described closure casing, and described LED lamp assembly emits beam and after described amasthenic lens, produces direct beam and enter in described light-strip.The LED lamp assembly of this guiding device emits beam after line focus camera lens and produces direct beam, and LED lamp assembly is positioned in lighttight closure casing, make light can not produce loss, when light beam transmits in light-strip, decay can diminish, light path brightness and the two ends of light-strip zone line are consistent, improve brightness and the uniformity of light-strip, and then guarantee positioning precision.
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 of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the structural representation that in prior art, in light touch technology product, the light path of light-strip realizes;
Fig. 2 is the disclosed a kind of structural representation of realizing the guiding device of optical touch screen light path of the utility model embodiment;
Fig. 3 is the sectional structure schematic diagram of the disclosed light-strip of the utility model embodiment;
Fig. 4 is the main TV structure schematic diagram of the disclosed light-strip of the utility model embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model openly provides a kind of guiding device and optical touch screen of realizing optical touch screen light path, this guiding device comprises: closure casing, be arranged on light-strip in closure casing inner chamber, be arranged on the amasthenic lens at light-strip two ends and be arranged on the LED lamp assembly at closure casing two ends, amasthenic lens and LED lamp assembly are arranged in closure casing, and LED lamp assembly emits beam and produces direct beam after line focus camera lens and enter in light-strip.The LED lamp assembly of this guiding device emits beam after line focus camera lens and produces direct beam, and LED lamp assembly is positioned in lighttight closure casing, make light can not produce loss, when light beam transmits in light-strip, decay can diminish, light path brightness and the two ends of light-strip zone line are consistent, improve brightness and the uniformity of light-strip, and then guarantee positioning precision.
Referring to accompanying drawing 2, is the disclosed a kind of structural representation of realizing the guiding device of optical touch screen light path of the utility model embodiment.The utility model embodiment discloses a kind of guiding device of realizing optical touch screen light path, this guiding device comprises: closure casing 1, be arranged on light-strip 2 in closure casing 1 inner chamber, be arranged on the amasthenic lens 3 at light-strip 2 two ends and be arranged on the LED lamp assembly 4 at closure casing 1 two ends, amasthenic lens 3 and LED lamp assembly 4 are arranged in closure casing 1, and the LED lamp assembly 4 rear generation direct beam of line focus camera lens 3 that emits beam enters in light-strip 2.The LED lamp assembly of this guiding device emits beam after line focus camera lens and produces direct beam, and LED lamp assembly is positioned in lighttight closure casing, make light can not produce loss, when light beam transmits in light-strip, decay can diminish, light path brightness and the two ends of light-strip zone line are consistent, improve brightness and the uniformity of light-strip, and then guarantee positioning precision.
Preferably, closure casing 1 described above is opaque closed structure, guarantees that the light that LED lamp sends all passes through amasthenic lens, prevents the LED loss that emits beam, maximum become straight line light, inject in light-strip.
Preferably, refer to accompanying drawing 3 and accompanying drawing 4, Fig. 3 is the sectional structure schematic diagram of the disclosed light-strip of the utility model embodiment, and Fig. 4 is the main TV structure schematic diagram of the disclosed light-strip of the utility model embodiment.Light-strip 2 described above comprises: leaded light carrier 5, reflective sheeting 6 and heat-shrink tube 7, reflective sheeting 6 is U-shaped, an opening is exiting surface, the cross section of leaded light carrier 5 is the bar of square or rectangular, its material is PMMA material or other high light transmissive materials, its covering surface or parcel reflectorized material, the length of reflective sheeting 6 and/or heat-shrink tube 7 is longer than to leaded light carrier 5, the cavity of light source is held in formation, break-even the entering in leaded light carrier 5 of light that light source is sent, leaded light carrier 5 back to exiting surface outer surface, be provided with white MARK point as diffuse reflection light source.
The above-mentioned disclosed principle that realizes the guiding device of optical touch screen light path: LED lamp assembly emits beam after line focus camera lens and produces direct beam, and LED lamp assembly is positioned in lighttight closure casing, make light can not produce loss, when light beam transmits in light-strip, decay can diminish, light path brightness and the two ends of light-strip zone line are consistent, improve brightness and the uniformity of light-strip, and then guarantee positioning precision.
On the basis of above-mentioned disclosed a kind of guiding device of realizing optical touch screen light path, the invention also discloses a kind of optical touch screen, this optical touch screen comprises: the display unit of display frame, also comprises the guiding device of realizing optical touch screen light path described above.
In sum, the utility model openly provides a kind of guiding device and optical touch screen of realizing optical touch screen light path, this guiding device comprises: closure casing, be arranged on light-strip in closure casing inner chamber, be arranged on the amasthenic lens at light-strip two ends and be arranged on the LED lamp assembly at closure casing two ends, amasthenic lens and LED lamp assembly are arranged in closure casing, and LED lamp assembly emits beam and produces direct beam after line focus camera lens and enter in light-strip.The LED lamp assembly of this guiding device emits beam after line focus camera lens and produces direct beam, and LED lamp assembly is positioned in lighttight closure casing, make light can not produce loss, when light beam transmits in light-strip, decay can diminish, light path brightness and the two ends of light-strip zone line are consistent, improve brightness and the uniformity of light-strip, and then guarantee positioning precision.
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 (7)
1. a guiding device of realizing optical touch screen light path, it is characterized in that, comprise: closure casing, be arranged on light-strip in described closure casing inner chamber, be arranged on the amasthenic lens at described light-strip two ends and be arranged on the LED lamp assembly at described closure casing two ends, described amasthenic lens and described LED lamp assembly are arranged in described closure casing, and described LED lamp assembly emits beam and after described amasthenic lens, produces direct beam and enter in described light-strip.
2. guiding device according to claim 1, is characterized in that, described closure casing is lighttight closed structure.
3. guiding device according to claim 1, is characterized in that, described light-strip comprises: leaded light carrier, reflective sheeting and heat-shrink tube, and described reflective sheeting is U-shaped, an opening is exiting surface.
4. guiding device according to claim 3, is characterized in that, the bar that the cross section of described leaded light carrier is square or rectangular, and its material is PMMA material, its covering surface or parcel reflectorized material.
5. guiding device according to claim 3, is characterized in that, the length of described reflective sheeting and/or heat-shrink tube is longer than described leaded light carrier, forms the cavity that holds light source, break-even the entering in described leaded light carrier of light that described light source is sent.
6. guiding device according to claim 3, is characterized in that, described leaded light carrier back to exiting surface outer surface, be provided with white MARK point as diffuse reflection light source.
7. an optical touch screen, comprising: the display unit of display frame, it is characterized in that, and also comprise the guiding device of realizing optical touch screen light path described in the claims 1-6 any one claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320422589.5U CN203453994U (en) | 2013-07-16 | 2013-07-16 | Light guiding device for implementing light path of optical touch panel and optical touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320422589.5U CN203453994U (en) | 2013-07-16 | 2013-07-16 | Light guiding device for implementing light path of optical touch panel and optical touch panel |
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| CN203453994U true CN203453994U (en) | 2014-02-26 |
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| CN201320422589.5U Expired - Fee Related CN203453994U (en) | 2013-07-16 | 2013-07-16 | Light guiding device for implementing light path of optical touch panel and optical touch panel |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452719A (en) * | 2019-04-11 | 2020-07-28 | 上海安珂麟汽车科技有限公司 | L ED car atmosphere lamp module |
| US11016605B2 (en) | 2017-03-22 | 2021-05-25 | Flatfrog Laboratories Ab | Pen differentiation for touch displays |
| US11029783B2 (en) | 2015-02-09 | 2021-06-08 | Flatfrog Laboratories Ab | Optical touch system comprising means for projecting and detecting light beams above and inside a transmissive panel |
| US11182023B2 (en) | 2015-01-28 | 2021-11-23 | Flatfrog Laboratories Ab | Dynamic touch quarantine frames |
| US11256371B2 (en) | 2017-09-01 | 2022-02-22 | Flatfrog Laboratories Ab | Optical component |
| US11269460B2 (en) | 2017-03-28 | 2022-03-08 | Flatfrog Laboratories Ab | Touch sensing apparatus and method for assembly |
| US11474644B2 (en) | 2017-02-06 | 2022-10-18 | Flatfrog Laboratories Ab | Optical coupling in touch-sensing systems |
| US11567610B2 (en) | 2018-03-05 | 2023-01-31 | Flatfrog Laboratories Ab | Detection line broadening |
| US11579731B2 (en) | 2016-12-07 | 2023-02-14 | Flatfrog Laboratories Ab | Touch device |
| 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 |
-
2013
- 2013-07-16 CN CN201320422589.5U patent/CN203453994U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11182023B2 (en) | 2015-01-28 | 2021-11-23 | Flatfrog Laboratories Ab | Dynamic touch quarantine frames |
| US11029783B2 (en) | 2015-02-09 | 2021-06-08 | Flatfrog Laboratories Ab | Optical touch system comprising means for projecting and detecting light beams above and inside a transmissive panel |
| US11579731B2 (en) | 2016-12-07 | 2023-02-14 | Flatfrog Laboratories Ab | Touch device |
| US11474644B2 (en) | 2017-02-06 | 2022-10-18 | Flatfrog Laboratories Ab | Optical coupling in touch-sensing systems |
| US11740741B2 (en) | 2017-02-06 | 2023-08-29 | Flatfrog Laboratories Ab | Optical coupling in touch-sensing systems |
| US11016605B2 (en) | 2017-03-22 | 2021-05-25 | Flatfrog Laboratories Ab | Pen differentiation for touch displays |
| US11099688B2 (en) | 2017-03-22 | 2021-08-24 | Flatfrog Laboratories Ab | Eraser for touch displays |
| US11269460B2 (en) | 2017-03-28 | 2022-03-08 | Flatfrog Laboratories Ab | Touch sensing apparatus and method for assembly |
| US11281338B2 (en) | 2017-03-28 | 2022-03-22 | 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 |
| CN111452719A (en) * | 2019-04-11 | 2020-07-28 | 上海安珂麟汽车科技有限公司 | L ED car atmosphere lamp module |
| US11893189B2 (en) | 2020-02-10 | 2024-02-06 | Flatfrog Laboratories Ab | Touch-sensing apparatus |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20140226 Termination date: 20190716 |