CN202694301U - Infrared touch screen with lens type light-conducting unit - Google Patents
Infrared touch screen with lens type light-conducting unit Download PDFInfo
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- CN202694301U CN202694301U CN 201220275274 CN201220275274U CN202694301U CN 202694301 U CN202694301 U CN 202694301U CN 201220275274 CN201220275274 CN 201220275274 CN 201220275274 U CN201220275274 U CN 201220275274U CN 202694301 U CN202694301 U CN 202694301U
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- infrared
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Abstract
The utility model discloses an infrared touch screen with a lens type light-conducting unit, comprising an infrared emission unit and an infrared receiving unit, and further comprising an emission light-conducting unit and a receiving light-conducting unit, wherein each one of the emission light-conducting unit and the receiving light-conducting unit at least comprises a curve-surface light-transmitting surface, so that a lens structure is formed by the emission light-conducting unit and the receiving light-conducting unit. According to the infrared touch screen, light beam energy of a light beam in a vertical direction of a touch face is concentrated, an emission angle is small, stray light is inhibited and a suspension height is reduced; and in the direction of the touch face, the optical light-conducting unit of the lens structure can disperse the light beam for a certain angle and the receiving unit can receive infrared light in a larger angle range, so that the structure of the infrared touch screen is simplified and the touch detection performance is improved.
Description
Technical field
The utility model relates to a kind of infrared touch panel, relates in particular to a kind of infrared touch panel with lens type light element.
Background technology
Existing infrared touch system, its sample mode all is by by being installed in X, Y-direction arrange uniform infrared emission unit and infrared receiver around along the touch area, driving circuits drives infrared emission unit and infrared receiver under the control of MCU control module, the noctovisor scan matrix that corresponding formation directions X and Y-direction are intersected anyhow.When touch was arranged, finger or other object will block the anyhow infrared ray through this point, were detected by control module and judged the position of touch point on touch-screen.
At present in the infrared touch panel field, be 200820109789.4 " a kind of catoptron that is applied on the touch-screen " such as the patent No., this utility model fundamental purpose is: utilize principle of reflection that the element number that transmits and receives on the infrared touch panel is reduced half; The cardinal principle that such as the patent No. is " a kind of multi-point touch panel of pure flat structure " this utility model of 201020271758.6 is: increased a light guide plate on the basis of common infrared touch panel, be used for filling the cavity on the common touch-screen body touch face, seem pure flat effect thereby reach the surface.
Patent US20070165008A1 discloses a kind of " COMPACT INFRARED TOUCH SCREEN APPARATATUS ", and utilize optical element that light path is transferred, change the direction of propagation of light, change that touch-screen receives, the installation site of transmitter unit, make the infrared touch panel contour structures can design compactlyer, attractive in appearance.Adopt the infrared touch panel of this invention both can realize low narrow frame, reduce the hoverheight of touch-screen, can reach again and suppress the ambient light interference, raising touches the accuracy that detects.
Above-mentioned technology has changed the installation site of reception, transmitter unit, changed the transmission path of light, increased the equivalent transmission path of light, lost the energy of part light, simultaneously, light-guide device has limited the transmission pore size of light, has also weakened the energy size of the light of actual propagation, cause touching detection signal and weaken, be unfavorable for improving detection sensitivity and the sensing range of touch-screen.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that existing infrared touch panel exists, a kind of infrared touch panel with lens type light element is provided, the utility model makes light beam concentrate at the face of touch vertical direction beam energy, the angle of divergence is little, suppress parasitic light, reduce hoverheight, and in the face of touch direction, the optics light element angle that beam divergence is certain with lens arrangement, receiving element can receive the infrared light than polarizers of big angle scope, both simplified infrared touching screen structure, and improved again to touch and detect performance.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of infrared touch panel with lens type light element, comprise infrared emission unit and infrared receiver, it is characterized in that: also comprise the emission light element and receive light element, described emission light element and reception light element all comprise a curved surface transparent surface at least, make the emission light element and receive light element to form lens arrangement.
When transmitting illuminant was pointolite, described emission light element was finite value at the equivalent object space focal length perpendicular to the face of touch direction, and focus in object space overlaps with pointolite, and emergent light is directional light.
When transmitting illuminant is pointolite, described emission light element, for infinitely great, emergent light does not change direction at the equivalent object space focal length that is parallel to touch face direction.
When transmitting illuminant was source of parallel light, described emission light element was in the face of touch direction, and the object space focal length is finite value, and light source is split into the emergent light with angle of divergence after launching light element.
When transmitting illuminant was source of parallel light, described emission light element had been infinitely great perpendicular to the face of touch direction equivalent focal length, and emergent light does not change direction.
Described reception light element is finite value at the equivalent focal length that touches face direction and vertical touch face direction, and incident light converges on the receiving plane that receives light element through receiving light element.
Described emission light element is monolithic construction, and the reception light element is monolithic construction.
Described emission light element comprises a plurality of emission leaded light subelements, and a plurality of emission leaded light subelements are combined to form the emission light element.
Described reception light element comprises a plurality of reception leaded light subelements, and a plurality of reception leaded light subelements are combined to form the reception light element.
Described curved surface transparent surface is the combination of one or more curved surfaces.
Employing the utility model has the advantage of:
One, in the utility model, emission light element and the existing light path turnover of reception light element function have again the optical lens function, by changing the position of infrared emission, reception original paper, reduce the seal ring thickness of traditional infrared screen on the one hand, can accomplish ultralow super narrow frame; On the other hand, can become specific Beam Control lens according to light source design again, satisfy touching the scanning detection to the requirement of light source.
Two, in the utility model, to the infrared light of pointolite infrared emission unit emission, because emission light element and to the convergence of light beam, at vertical touch face direction horizontal infection, keep the less angle of divergence, beam energy is concentrated, and signal strengthens, good directionality, to propagating light beam selection is arranged, be conducive to improve detection sensitivity, suppress interference of stray light, reduce hoverheight.
Three, in the utility model, infrared light to the emission of pointolite infrared emission unit, in the face of touch direction, because the emission light element does not have converging action to light beam, make the infrared light of infrared emission unit emission keep the larger angle of divergence in the face of touch direction, be conducive to single transmitter unit in a big way irradiation, and to receiving light element, can receive the more incident light of polarizers of big angle scope, increase sensing range.
Four, in the utility model, when transmitting illuminant was source of parallel light, described emission light element was in the face of touch direction, light source is dispersed, be conducive to single transmitter unit in a big way irradiation, and to receiving light element, can receive the more incident light of polarizers of big angle scope, increase sensing range.
Five, in the utility model, when transmitting illuminant is source of parallel light, described emission light element is perpendicular to touching face direction keeping parallelism, do not produce scattering, because the optics light element is to the restriction of infrared light beam, and being close to glass surface (the thick approximately 2-3mm of reflective medium) installs, the transmission of light is constrained on very little altitude range, only have when the touch body touches glass surface, touch screen controller just has touch-responsive, thereby further reduced the too high problem of infrared touch panel ubiquitous hoverheight (the traditional infrared screen just can cause touch-responsive when touch body also not during the touch screen surface).
Six, in the utility model, for receiving light element, incident light is converged on the receiving plane with vertical touch face direction in the face of touch direction, both can strengthen the reception signal, can receive again incident light in a big way.
Seven, in the utility model, when the emission light element, when the reception light element is monolithic construction, the position is fixed each other, and high conformity is convenient to the batch production of approved product.
Eight, in the utility model, when the emission light element, when the reception light element is split-type structural, light element and infrared emission, the mutual position of receiving element can be adjusted separately when assembling, are suitable for the production of short run multi-assortment production.
Nine, in the utility model, the transparent curved of light element by one or more surface compositions, forms accurate lens unit according to actual needs, improves to touch and detects performance.
Ten, because the touch face of infrared reception, transmitter unit installed surface and touch-screen body is not same plane, can effectively avoid hand or other materials to the infringement of infrared reception, transmitter unit, improve the protective of product.
Description of drawings
Fig. 1 is that the utility model adopts pointolite light path synoptic diagram;
Fig. 2 is that the utility model adopts source of parallel light light path synoptic diagram;
Fig. 3 is embodiment 3 usefulness figure of the present utility model;
Fig. 4 is embodiment 4 usefulness figure of the present utility model.
Be labeled as among the figure: 1, infrared emission unit, 2, the emission light element, 3, the curved surface transparent surface, 4, touch face, 5, infrared light, 6, infrared receiver, 7, receive light element.
Embodiment
Example 1
Such as Fig. 1, infrared emission unit 1 is that the infrared light 5 that sends of pointolite transmitter unit becomes parallel thin plate with the light element equivalence here through emission light element 2() the curved surface transparent surface of end face assembles, (with the face of touch perpendicular direction direction) converts directional light in the vertical direction, and (with the face of touch direction parallel direction) keeps certain angle in the horizontal direction.The curved surface transparent surface 3 of emission light element 2 end faces, the light that pointolite is sent keeps larger emission angle in touch face 4 directions.
Example 2
Such as Fig. 2, here see the optical element equivalence when approximately parallel infrared light that infrared transmitter unit 1 sends through emission light element 2(and become parallel thin plate) after curved surface transparent surface 3 curved surfaces of end face disperse, (with the face of touch direction parallel direction) converts the certain angle light beam in the horizontal direction, the approximate directional light that light source sends in the vertical direction (with the face of touch perpendicular direction direction) is not assembled keeping parallelism by light element.
Example 3
Present embodiment is side-mounted reflective structure, as shown in Figure 3, after the infrared light that infrared emission unit 1 sends is injected emission light element 2 perpendicular to glass or transparent plastic material, poly-loose by 3 pairs of infrared lights of curved surface transparent surface, (with the face of touch perpendicular direction direction) converts directional light in the vertical direction, and in the horizontal direction (with touching face direction parallel direction), emission light element 2 end faces be designed to curved surface, the light that pointolite is sent keeps larger emission angle in the face of touch direction.Adopt this structure infrared emission unit 1 and infrared receiver 6 in touch-screen body bottom, can reduce to shield the width of body.
Example 4
Present embodiment is the back-positioned type reflective structure, as shown in Figure 4, after the infrared light that infrared emission unit 1 sends is directly injected emission light element 2, converge by 3 pairs of infrared lights of curved surface transparent surface, (with the face of touch perpendicular direction direction) converts directional light in the vertical direction, and in the horizontal direction (with touching face direction parallel direction), the light element end face be designed to curved surface, the light that pointolite is sent keeps larger emission angle in the face of touch direction.Adopt this structure infrared emission unit in glass sides, can reduce to shield the thickness of body.
Embodiment 5
A kind of infrared touch panel with lens type light element, comprise infrared emission unit 1 and infrared receiver 6, also comprise emission light element 2 and receive light element 7, described emission light element 2 and reception light element 7 all comprise a curved surface transparent surface 3 at least, make emission light element 2 and receive light element 7 to form lens arrangement.
In the utility model, when transmitting illuminant was pointolite, described emission light element 2 was finite value at the equivalent object space focal length perpendicular to touch face 4 directions, and focus in object space overlaps with pointolite, and emergent light is directional light.
Embodiment 6
Present embodiment and above-described embodiment are basic identical, and the key distinction is: when transmitting illuminant is pointolite, and described emission light element 2, for infinitely great, emergent light does not change direction at the equivalent object space focal length that is parallel to touch face 4 directions.
Embodiment 8
Present embodiment and above-described embodiment are basic identical, the key distinction is: when transmitting illuminant is source of parallel light, described emission light element 2 is in the face of touch direction, and the object space focal length is finite value, and light source is split into the emergent light with angle of divergence after launching light element 2.
Embodiment 9
Present embodiment and above-described embodiment are basic identical, and the key distinction is: when transmitting illuminant was source of parallel light, described emission light element 2 had been infinitely great perpendicular to touch face 4 direction equivalent focal lengths, and emergent light does not change direction.
Embodiment 10
Present embodiment and above-described embodiment are basic identical, the key distinction is: described reception light element 7, equivalent focal length in touch face 4 directions and vertical touch face 4 directions is finite value, and incident light converges on the receiving plane that receives light element 7 through receiving light element 7.
Embodiment 11
Present embodiment and above-described embodiment are basic identical, and the key distinction is: described emission light element 2 is monolithic construction, and receiving light element 7 is monolithic construction.
Embodiment 12
Present embodiment and above-described embodiment are basic identical, and the key distinction is: described emission light element 2 comprises a plurality of emission leaded light subelements, and a plurality of emission leaded light subelements are combined to form the emission light element.
Embodiment 13
Present embodiment and above-described embodiment are basic identical, and the key distinction is: described reception light element 7 comprises a plurality of reception leaded light subelements, and a plurality of reception leaded light subelements are combined to form the reception light element.
Embodiment 14
Present embodiment and above-described embodiment are basic identical, and the key distinction is: described curved surface transparent surface 3 is the combination of one or more curved surfaces.
Claims (10)
1. infrared touch panel with lens type light element, comprise infrared emission unit (1) and infrared receiver (6), it is characterized in that: also comprise emission light element (2) and receive light element (7), described emission light element (2) and reception light element (7) all comprise a curved surface transparent surface (3) at least, make emission light element (2) and receive light element (7) to form lens arrangement.
2. the infrared touch panel with lens type light element according to claim 1, it is characterized in that: when transmitting illuminant is pointolite, described emission light element (2), be finite value at the equivalent object space focal length perpendicular to touch face (4) direction, focus in object space overlaps with pointolite, and emergent light is directional light.
3. the infrared touch panel with lens type light element according to claim 1, it is characterized in that: when transmitting illuminant is pointolite, described emission light element (2), for infinitely great, emergent light does not change direction at the equivalent object space focal length that is parallel to touch face (4) direction.
4. the infrared touch panel with lens type light element according to claim 1, it is characterized in that: when transmitting illuminant is source of parallel light, described emission light element (2) is in touch face (4) direction, the object space focal length is finite value, and light source is split into the emergent light with angle of divergence after launching light element (2).
5. the infrared touch panel with lens type light element according to claim 1, it is characterized in that: when transmitting illuminant is source of parallel light, described emission light element (2) is being infinitely great perpendicular to touch face (4) direction equivalent focal length, and emergent light does not change direction.
6. arbitrary described infrared touch panel with lens type light element according to claim 1-5, it is characterized in that: described reception light element (7), equivalent focal length in touch face (4) direction and vertical touch face (4) direction is finite value, incident light converges on the receiving plane that receives light element (7) through receiving light element (7).
7. the infrared touch panel with lens type light element according to claim 6 is characterized in that: described emission light element (2) is monolithic construction, and receiving light element (7) is monolithic construction.
8. the infrared touch panel with lens type light element according to claim 6, it is characterized in that: described emission light element (2) comprises a plurality of emission leaded light subelements, a plurality of emission leaded light subelements are combined to form the emission light element.
9. according to claim 7 or 8 described infrared touch panels with lens type light element, it is characterized in that: described reception light element (7) comprises a plurality of reception leaded light subelements, and a plurality of reception leaded light subelements are combined to form the reception light element.
10. according to claim 1,2,3,4,5,7 or 8 described infrared touch panels with lens type light element, it is characterized in that: described curved surface transparent surface (3) is the combination of one or more curved surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220275274 CN202694301U (en) | 2012-06-12 | 2012-06-12 | Infrared touch screen with lens type light-conducting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220275274 CN202694301U (en) | 2012-06-12 | 2012-06-12 | Infrared touch screen with lens type light-conducting unit |
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| Publication Number | Publication Date |
|---|---|
| CN202694301U true CN202694301U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220275274 Expired - Lifetime CN202694301U (en) | 2012-06-12 | 2012-06-12 | Infrared touch screen with lens type light-conducting unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113226077A (en) * | 2019-06-14 | 2021-08-06 | 韩国烟草人参公社 | Optical module and aerosol-generating device comprising an optical module |
| WO2023056765A1 (en) * | 2021-10-08 | 2023-04-13 | 深圳市华胜软件技术有限公司 | Infrared touch screen and display apparatus |
-
2012
- 2012-06-12 CN CN 201220275274 patent/CN202694301U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113226077A (en) * | 2019-06-14 | 2021-08-06 | 韩国烟草人参公社 | Optical module and aerosol-generating device comprising an optical module |
| CN113226077B (en) * | 2019-06-14 | 2024-03-15 | 韩国烟草人参公社 | Optical module and aerosol-generating device comprising an optical module |
| US11944129B2 (en) | 2019-06-14 | 2024-04-02 | Kt&G Corporation | Optical module and aerosol generating device including the same |
| WO2023056765A1 (en) * | 2021-10-08 | 2023-04-13 | 深圳市华胜软件技术有限公司 | Infrared touch screen and display apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |
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| CX01 | Expiry of patent term |