CN201927010U - Touch screen, touch system and light source - Google Patents

Touch screen, touch system and light source Download PDF

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Publication number
CN201927010U
CN201927010U CN2009202469155U CN200920246915U CN201927010U CN 201927010 U CN201927010 U CN 201927010U CN 2009202469155 U CN2009202469155 U CN 2009202469155U CN 200920246915 U CN200920246915 U CN 200920246915U CN 201927010 U CN201927010 U CN 201927010U
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CN
China
Prior art keywords
light conductor
described light
touch
rectangular cross
reflector element
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
Application number
CN2009202469155U
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Chinese (zh)
Inventor
叶新林
刘建军
刘新斌
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Beijing Unitop New Technology Co Ltd
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Beijing Unitop New Technology Co Ltd
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Publication date
Application filed by Beijing Unitop New Technology Co Ltd filed Critical Beijing Unitop New Technology Co Ltd
Priority to CN2009202469155U priority Critical patent/CN201927010U/en
Priority to PCT/CN2010/078665 priority patent/WO2011057572A1/en
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Publication of CN201927010U publication Critical patent/CN201927010U/en
Anticipated expiration legal-status Critical
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    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/003—Lens or lenticular sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The utility model discloses a touch screen, comprising a light source which comprises a light-emitting body, a light guide body and a reflection unit, wherein the light-emitting body is disposed at the port of the light guide body; the reflection unit is formed at the side in the light guide body far away a touch detection area; the lights emitted by the light-emitting body are irradiated into the light guide body and transmitted in the light guide body; after being reflected by the reflection unit, partial lights transmitted in the light guide body are distributed in the touch detection area. The utility model further discloses a touch system. The system enables the enhancements of the uniformity of the lights distributed on the touch detection area of the touch screen to be possible. The utility model further discloses a light source, wherein the uniformity of the lights emitted by the light source is possible to be enhanced.

Description

A kind of touch-screen, touch system and light source
Technical field
The utility model relates to photoelectric detecting technology, relates in particular to a kind of touch-screen, touch system and light source.
Background technology
In the prior art, the touch-screen that uses photoelectric technology to carry out detecting the touch point mainly contains two kinds: a kind of infrared touch panel that is to use infrared emission and receiving tube array to constitute the noctovisor scan grid; Another kind is to use the optical touch screen of the first-class optical sensing of shooting unit as detecting element.
Wherein, in above-mentioned optical touch screen, need to provide light source, think that described optical sensing unit provides detection light.The distribution of light that described light source sends is on the touch detection zone of touch panel, and the optical sensing unit is in order to obtain the touch data that betides on the described touch detection zone.
Along with the improvement and the progress on using thereof of material, the light source of various different shapes also is accompanied by different demands and is developed, improves, and all is substantially to advance to the direction of saving the energy, enhancement brightness.
Yet, find in the practice, although after carrying out the light source improvement, the touch-screen operational excellence under most conditions of work that comprises described light source, still, when the frame frequency of optical sensing unit (as camera) is higher, a little variation of testing environment all may have influence on the judgement of described optical sensing unit to touching, in other words, when the frame frequency of optical sensing unit was higher, the reliability of testing result was relatively poor.Therefore, current, industry generally is devoted to how to improve the stability of testing environment, particularly, as, how to strengthen the homogeneity of light source irradiation.
But, find in the practice that when using existing technical scheme enhancing light homogeneity, actual effect still remains to be improved, industry needs a kind of new inhomogeneity technical scheme of strengthened light.
The utility model content
At problems of the prior art, the utility model provides a kind of touch-screen, is beneficial to strengthen to be distributed in the homogeneity that touches the light on the detection zone in it; The utility model provides a kind of touch system, is beneficial to strengthen to be distributed in the homogeneity that touches the light on the detection zone in it in the touch-screen; The utility model provides a kind of light source, is beneficial to the homogeneity of enhancing by its light that sends.
A kind of touch-screen that the utility model provides, comprise light source, touch detection zone, optical sensing unit and control module, described light source places at least one side of described touch detection zone, described optical sensing unit is in order to obtain the touch data that betides on the described touch detection zone, and described control module is coupled to described optical sensing unit and utilizes the described touch data that obtains from described optical sensing unit to determine touch location; Described light source comprises luminophor, light conductor and reflector element, described luminophor places the port of described light conductor, described reflector element is formed at the interior place, side away from described touch detection zone of described light conductor, the light that described luminophor sends is injected described light conductor and is transmitted in described light conductor, and the part light that transmits in described light conductor is distributed in described touch detection zone after reflecting via described reflector element.
Alternatively, described reflector element is a reflecting plate, and described reflecting plate and described light conductor are discrete or be attached to the interior side away from described touch detection zone of described light conductor, and the side towards described light conductor in the described reflecting plate is formed with reflecting surface; Or
Described reflector element is a reflectance coating, and described reflectance coating adheres to or is formed in the described light conductor side away from described touch detection zone.
Alternatively, when described reflector element was reflectance coating, the side away from described touch detection zone in the described light conductor comprised at least two inclined-plane groups, and each described inclined-plane group comprises two inclined-planes with angle, and each described inclined-plane group is arranged continuously;
Adjacent described inclined-plane group has identical angle, perhaps, described inclined-plane group is during along the profile direction of described light conductor, the angle of each described inclined-plane group is reduced gradually by port to the center of described light conductor, described inclined-plane group is during along the square section direction of described light conductor, the angle of each described inclined-plane group is reduced gradually by both sides to the center away from the side of described touch detection zone in the described light conductor, and the straight line that is parallel to each described inclined-plane also is parallel to described touch detection zone;
Alternatively, each described inclined-plane group is contour; Perhaps, described inclined-plane group is during along the profile direction of described light conductor, the height of each described inclined-plane group is increased gradually by port to the center of described light conductor and/or described reflecting plate, described inclined-plane group is during along the square section direction of described light conductor, and the height of each described inclined-plane group is by increasing gradually away from the side of described touch detection zone and/or both sides to the center of described reflecting surface in the described light conductor.
Alternatively, when described reflector element was reflectance coating, the side away from described touch detection zone in the described light conductor comprised at least two cambered surfaces, and each described cambered surface is arranged continuously;
Adjacent described cambered surface has identical arc length and radian, perhaps, each described cambered surface is during along the profile direction of described light conductor, radian with each described cambered surface of identical arc length is increased gradually by port to the center of described light conductor, arc length with each described cambered surface of identical radian measure is reduced gradually by port to the center of described light conductor, each described cambered surface is during along the square section direction of described light conductor, and the radian with each described cambered surface of identical arc length is increased gradually by both sides to the center away from the side of described touch detection zone in the described light conductor; Arc length with each described cambered surface of identical radian measure is reduced gradually by both sides to the center away from the side of described touch detection zone in the described light conductor, and the straight line that is parallel to each described cambered surface central shaft also is parallel to described touch detection zone;
Alternatively, when described reflector element was reflectance coating, the side away from described touch detection zone in the described light conductor comprised at least two rectangular cross sections, and each described rectangular cross section is arranged continuously;
Distance equates between adjacent described rectangular cross section, and perhaps, each described rectangular cross section is during along the profile direction of described light conductor, and distance is reduced gradually by port to the center of described light conductor between adjacent described rectangular cross section; Each described rectangular cross section is during along the square section direction of described light conductor, distance is reduced gradually by both sides to the center away from the side of described touch detection zone in the described light conductor between adjacent described rectangular cross section, and the straight line that is parallel to each described rectangular cross section central shaft also is parallel to described touch detection zone;
Alternatively, each described rectangular cross section is contour, and perhaps, each described rectangular cross section is during along the profile direction of described light conductor, and the height of each described rectangular cross section is increased by port to the center of described light conductor and/or described reflecting plate; Each described rectangular cross section is during along the square section direction of described light conductor, and the height of each described rectangular cross section is by increasing gradually away from the side of described touch detection zone and/or both sides to the center of described reflecting surface in the described light conductor.
Alternatively, when described reflector element was reflectance coating, the side away from described touch detection zone in the described light conductor was the plane, and the angle of described plane and described touch detection zone is less than 90 degree;
Alternatively, described reflector element covers the end face and the bottom surface of described light conductor.
Alternatively, described light source also comprises astigmatic material, described astigmatic material is between described reflector element and described light conductor, the part light that transmits in described light conductor arrives described reflector element through described astigmatic material, is distributed in described touch detection zone again after the described reflector element reflection behind described astigmatic material, light conductor.
Alternatively, described luminophor is light emitting diode or cold-cathode fluorescence lamp.
Alternatively, described light conductor is a kind of in glass, optical fiber or the acrylic.
Alternatively, adhere in the port of described light conductor or be formed with astigmatic material, the light that described luminophor sends is injected described light conductor via described astigmatic material.
A kind of touch system, described touch system comprises above-mentioned touch-screen.
A kind of light source, described light source comprises luminophor, light conductor and reflector element, described luminophor places the port of described light conductor, described reflector element is formed at the place, side of described light conductor, the light that described luminophor sends is injected described light conductor and is transmitted in described light conductor, the part light that in described light conductor, transmits through described reflector element reflection back by described light conductor in away from the side ejaculation of described reflector element.
Alternatively, described reflector element is a reflecting plate, and described reflecting plate and described light conductor are discrete or be attached to the side of described light conductor, and the side towards described light conductor in the described reflecting plate is formed with reflecting surface; Or
Described reflector element is a reflectance coating, and described reflectance coating adheres to or be formed at the side of described light conductor.
Alternatively, when described reflector element was reflectance coating, the side near described reflector element in the described light conductor comprised at least two inclined-plane groups, and each described inclined-plane group comprises two inclined-planes with angle, and each described inclined-plane group is arranged continuously;
Adjacent described inclined-plane group has identical angle, perhaps, described inclined-plane group is during along the profile direction of described light conductor, the angle of each described inclined-plane group is reduced gradually by port to the center of described light conductor, described inclined-plane group is during along the square section direction of described light conductor, the angle of each described inclined-plane group is reduced gradually by both sides to the center near the side of described reflector element in the described light conductor, and the straight line that is parallel to each described inclined-plane also is parallel to the axle of described light conductor;
When described reflector element was reflecting plate, the side near described reflector element in described reflecting surface and/or the described light conductor comprised at least two inclined-plane groups, and each described inclined-plane group comprises two inclined-planes with angle, and each described inclined-plane group is arranged continuously;
Adjacent described inclined-plane group has identical angle, perhaps, described inclined-plane group is during along the profile direction of described light conductor, the angle of each described inclined-plane group is reduced gradually by port to the center of described light conductor and/or described reflecting plate, described inclined-plane group is during along the square section direction of described light conductor, the angle of each described inclined-plane group is by reducing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor, and the straight line that is parallel to each described inclined-plane also is parallel to the axle of described light conductor.
Alternatively, each described inclined-plane group is contour, perhaps, described inclined-plane group is during along the profile direction of described light conductor, the height of each described inclined-plane group is increased gradually by port to the center of described light conductor and/or described reflecting plate, described inclined-plane group is during along the square section direction of described light conductor, and the height of each described inclined-plane group is by increasing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor.
Alternatively, when described reflector element was reflectance coating, the side near described reflector element in the described light conductor comprised at least two cambered surfaces, and each described cambered surface is arranged continuously; Adjacent described cambered surface has identical arc length and radian, perhaps, each described cambered surface is during along the profile direction of described light conductor, radian with each described cambered surface of identical arc length is increased gradually by port to the center of described light conductor, arc length with each described cambered surface of identical radian measure is reduced gradually by port to the center of described light conductor, each described cambered surface is during along the square section direction of described light conductor, and the radian with each described cambered surface of identical arc length is increased gradually by both sides to the center near the side of described reflector element in the described light conductor; Arc length with each described cambered surface of identical radian measure is reduced gradually by both sides to the center near the side of described reflector element in the described light conductor, and the straight line that is parallel to each described cambered surface central shaft also is parallel to the axle of described light conductor;
When described reflector element was reflecting plate, the side near described reflector element in described reflecting surface and/or the described light conductor comprised at least two cambered surfaces, and each described cambered surface is arranged continuously;
Adjacent described cambered surface has identical arc length and radian, perhaps, each described cambered surface is during along the profile direction of described light conductor, radian with each described cambered surface of identical arc length is increased gradually by port to the center of described light conductor and/or described reflecting plate, arc length with each described cambered surface of identical radian measure is reduced gradually by port to the center of described light conductor and/or described reflecting plate, each described cambered surface is during along the square section direction of described light conductor, and the radian of each described cambered surface with identical arc length is by increasing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor; The arc length of each described cambered surface with identical radian measure is by reducing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor, and the straight line that is parallel to each described cambered surface central shaft also is parallel to the axle of described light conductor.
Alternatively, when described reflector element was reflectance coating, the side near described reflector element in the described light conductor comprised at least two rectangular cross sections, and each described rectangular cross section is arranged continuously;
Distance equates between adjacent described rectangular cross section, perhaps, each described rectangular cross section is during along the profile direction of described light conductor, distance is reduced gradually by port to the center of described light conductor between adjacent described rectangular cross section, each described rectangular cross section is during along the square section direction of described light conductor, distance is reduced gradually by both sides to the center near the side of described reflector element in the described light conductor between adjacent described rectangular cross section, and the straight line that is parallel to each described rectangular cross section central shaft also is parallel to the axle of described light conductor;
When described reflector element was reflecting plate, the side near described reflector element in described reflecting surface and/or the described light conductor comprised at least two rectangular cross sections, and each described rectangular cross section is arranged continuously;
Distance equates between adjacent described rectangular cross section, perhaps, each described rectangular cross section is during along the profile direction of described light conductor, distance is reduced gradually by port to the center of described light conductor and/or described reflecting plate between adjacent described rectangular cross section, each described rectangular cross section is during along the square section direction of described light conductor, distance is by reducing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor between adjacent described rectangular cross section, and the straight line that is parallel to each described rectangular cross section central shaft also is parallel to the axle of described light conductor.
Alternatively, each described rectangular cross section is contour, and perhaps, each described rectangular cross section is during along the profile direction of described light conductor, and the height of each described rectangular cross section is increased by port to the center of described light conductor and/or described reflecting plate; Each described rectangular cross section is during along the square section direction of described light conductor, and the height of each described rectangular cross section is by increasing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor.
Alternatively, when described reflector element was reflectance coating, the side near described reflector element in the described light conductor was the plane, and the angle between described plane and light emission face is less than 90 degree;
When described reflector element was reflecting plate, the side near described reflector element in described reflecting surface and/or the described light conductor was the plane, and the angle between described plane and light emission face is less than 90 degree.
Alternatively, described reflector element covers the end face and the bottom surface of described light conductor.
Alternatively, described light source also comprises astigmatic material, described astigmatic material is between described reflector element and described light conductor, the part light that transmits in described light conductor arrives described reflector element through described astigmatic material, is penetrated away from the side of described reflector element in by described light conductor behind described astigmatic material after the reflection of described reflector element again.
Alternatively, described luminophor is light emitting diode or cold-cathode fluorescence lamp.
Alternatively, described light conductor is a kind of in glass, optical fiber or the acrylic.
Alternatively, adhere in the port of described light conductor or be formed with astigmatic material, the light that described luminophor sends is injected described light conductor via described astigmatic material.
Compared with prior art, the camera that provides of the utility model has following advantage:
A kind of touch-screen that the utility model provides, by adjusting light-source structure, make it comprise luminophor, light conductor and reflector element, and described luminophor is placed the port of described light conductor, described reflector element is formed at the interior place, side away from described touch detection zone of described light conductor, the light that described luminophor is sent is injected described light conductor and is transmitted in described light conductor, and wherein part light is again via being distributed in described touch detection zone after the described reflector element reflection; That is, utilize described luminophor and light conductor to constitute area source earlier, utilize described reflector element to improve the homogeneity of the light that is sent by described area source based on principle of reflection again, the homogeneity that makes enhancing be distributed in the light on the described touch detection zone becomes possibility;
A kind of touch-screen that the utility model provides, by design in described reflecting plate interior reflective surface and/or the described light conductor structure away from the side of described touch detection zone (as, on the profile and/or square section direction of described light conductor, make described side and/or described reflecting surface comprise at least two inclined-plane groups, cambered surface or rectangular cross sections; Perhaps, directly making described side is the inclined-plane), make when reflecting plate being formed at place, described side the effect of the angular setting light emission of light that can be by changing the described reflecting plate of directive; Perhaps, when reflectance coating being adhered to or be formed at described side, can adjust the effect of light emission by the form that changes described reflectance coating; The homogeneity that all can make enhancing be distributed in the light on the described touch detection zone becomes possibility;
A kind of touch system that the utility model provides, by adjusting the structure of its inner light source, make described light source comprise luminophor, light conductor and reflector element, and described luminophor is placed the port of described light conductor, described reflector element is formed at the interior place, side away from described touch detection zone of described light conductor, the light that described luminophor is sent is injected described light conductor and is transmitted in described light conductor, and wherein part light is again via being distributed in described touch detection zone after the described reflector element reflection; Promptly, utilize described luminophor and light conductor to constitute area source earlier, utilize described reflector element to improve the homogeneity of the light that is sent by described area source based on principle of reflection again, the homogeneity that makes enhancing be distributed in the light on touch-screen touch detection zone in it becomes possibility;
A kind of touch system that the utility model provides, by design place in reflecting plate interior reflective surface described in its inner light source and/or the described light conductor structure away from the side of described touch detection zone (as, on the profile and/or square section direction of described light conductor, make described side and/or described reflecting surface comprise at least two inclined-plane groups, cambered surface or rectangular cross sections; Perhaps, directly making described side is the inclined-plane), make when reflecting plate being formed at place, described side the effect of the angular setting light emission of light that can be by changing the described reflecting plate of directive; Perhaps, when reflectance coating being adhered to or be formed at described side, can adjust the effect of light emission by the form that changes described reflectance coating; The homogeneity that all can make enhancing be distributed in the light on touch-screen touch detection zone in it becomes possibility;
A kind of light source that the utility model provides, by adjusting the structure of described light source, make it comprise luminophor, light conductor and reflector element, and described luminophor is placed the port of described light conductor, described reflector element is formed at the place, side of described light conductor, the light that described luminophor is sent is injected described light conductor and is transmitted in described light conductor, and wherein part light is penetrated by the side away from described reflector element in the described light conductor via described reflector element reflection back again; That is, utilize described luminophor and light conductor to constitute area source earlier, utilize described reflector element to improve the homogeneity of the light that sends by described area source based on principle of reflection again, make enhancing become possibility by the homogeneity of its light that sends;
A kind of light source that the utility model provides, the structure of the side by designing described reflecting plate interior reflective surface and/or described light conductor (as, on the profile and/or square section direction of described light conductor, make described side and/or described reflecting surface comprise at least two inclined-plane groups, cambered surface or rectangular cross sections; Perhaps, directly making described side is the inclined-plane), make when reflecting plate being formed at place, described side the effect of the angular setting light emission of light that can be by changing the described reflecting plate of directive; Perhaps, when reflectance coating being adhered to or be formed at described side, can adjust the effect of light emission by the form that changes described reflectance coating; All can make enhancing become possibility by the homogeneity of its light that sends.
Description of drawings
Fig. 1 is the structural representation of the utility model touch-screen first embodiment;
Structure cut-open view when Fig. 2 places the light conductor inner recess for luminophor among the utility model touch-screen first embodiment;
Fig. 3 is the structural representation of the utility model touch-screen second embodiment;
Fig. 4 is the structural representation when covering the light conductor end face among the utility model touch-screen embodiment;
Fig. 5 is the structural representation of the utility model touch-screen the 3rd embodiment;
Fig. 6 is a cut direction synoptic diagram among the utility model touch-screen embodiment;
Fig. 7 is the longitudinal profile synoptic diagram of light conductor among the utility model touch-screen the 4th embodiment;
Fig. 8 is the longitudinal profile synoptic diagram of light conductor among the utility model touch-screen the 5th embodiment;
Fig. 9 is the longitudinal profile synoptic diagram of light conductor among the utility model touch-screen the 6th embodiment;
Figure 10 is the schematic cross section of light conductor among the utility model touch-screen the 7th embodiment;
Figure 11 is the schematic cross section of light conductor among the utility model touch-screen the 8th embodiment;
Figure 12 is the schematic cross section of light conductor among the utility model touch-screen the 9th embodiment;
Figure 13 is the schematic cross section of light conductor among the utility model touch-screen the tenth embodiment.
Embodiment
The utility model will be further described below in conjunction with Figure of description and specific embodiment.
As shown in Figure 1, in the utility model touch-screen first embodiment, described touch-screen, comprise light source 100, touch detection zone 120, camera 140 (in other embodiments, also can be other optical sensing unit such as video camera, camera or optical sensor) and control module, described light source 100 places the side of described touch detection zone 120, and (illustrated embodiment, described light source 100 only place 1 side of described touch detection zone 120; In other embodiments, described light source 100 can place 2 or 3 sides of described touch detection zone 120), described camera 140 is in order to obtain the touch data that betides on the described touch detection zone 120, and described control module is coupled to described camera 140 and utilization is determined touch location from the described touch data that described camera 140 obtains; Described light source 100 comprises luminophor 102, light conductor 104 and reflecting plate 106, described luminophor 102 places the port one 05 of described light conductor 104, described reflecting plate 106 is formed at described light conductor 104 interior 109 places, side away from described touch detection zone 120, described reflecting plate 106 and described light conductor 104 are discrete, the light that described luminophor 102 sends is injected described light conductor 104 and transmission in described light conductor 104, and the part light of transmission penetrates and be distributed in described touch detection zone 120 (shown in light 1-4 among Fig. 1) through described light conductor 104 near the side 1092 of described touch detection zone 120 after reflecting via described reflecting plate 106 (reality is the reflecting surface 1064 towards described light conductor 104) again in described light conductor 104; Simultaneously, the part light of transmission then directly penetrates and is distributed in described touch detection zone 120 through described light conductor 104 near the side 1092 of described touch detection zone 120 in described light conductor 104.
Wherein, described luminophor 102 can adopt light emitting diode or cold-cathode fluorescence lamp, preferably infrarede emitting diode.Described light conductor 104 can be a kind of in the light transmitting materials such as glass, optical fiber or acrylic.Described light conductor 104 can be right cylinder, multiple shape such as triangular prism or rectangular parallelepiped, wherein, when the side 1092 (abbreviating the beam projecting face as) of close described touch detection zone 120 is for plane (light conductor is the side in triangular prism or the rectangular parallelepiped as described) in the described light conductor 104, make the angle of described plane and described touch detection zone 120 be less than or equal to 90 °, can reduce the detection light that sends via described light conductor 104 unnecessary scattering takes place, but described side 1092 is not limited only to the plane, also can be the surface of other type, is rough surface as side 1092.Described reflecting plate 106 can be market any reflection unit on sale, as reflection bar, level crossing or total reflection prism assembly etc.Described optical sensor can be a kind of or its combination in photoresistance, photodiode, phototriode, photoelectrical coupler or the photoelectric cell.
It should be noted that, place the mode of the port of described light conductor 104 to comprise described luminophor 102: in conjunction with shown in Figure 2,05 place is formed with recess 1041 at described port one, and described luminophor 102 places described recess 1041, and (profile of described recess 1041 can be arbitrary shapes such as taper, arc or rectangle; The square section of described recess 1041 can be arbitrary shapes such as circle, ellipse, square or rectangle; The profile of the recess 1041 of example is a rectangle among Fig. 2, and the square section also is a rectangle); Perhaps, described luminophor 102 is connected to the port one 05 (as shown in fig. 1) of described light conductor in the mode of mechanical engagement or gluing joint.Wherein, light-diffusing film 1082 can be formed with, the homogeneity of injecting the light of described light conductor 104 by described luminophor 102 can be strengthened on described recess 1041 surfaces.
In addition, the number of described luminophor 102 can be one, two or more, and when including only a described luminophor 102 in the described light source 100, described luminophor 102 places arbitrary port one 05 of described light conductor 104; When comprising two described luminophors 102 in the described light source 100, each described luminophor 102 places the port of described light conductor 104 respectively.Be distributed in the brightness that touches the light on the detection zone in the described touch-screen for enhancing, usually in described light source 100, comprise two described luminophors 102, also describe in the utility model, do not give unnecessary details comprising the related embodiment of a described luminophor 102 in the described light source 100 as example.
With similar other embodiment of this touch-screen first embodiment in, described reflecting plate 106 can be attached on the described light conductor 104.That is, described reflecting plate 106 can mechanical engagement or the mode of gluing joint be connected in the described light conductor 104 sides 109 away from described touch detection zone 120.
In conjunction with shown in Figure 3, in the utility model touch-screen second embodiment, described touch-screen, comprise light source 100, touch detection zone 120, camera 140 (in other embodiments, also can be other optical sensing unit such as video camera, camera or optical sensor) and control module, described light source 100 places the side of described touch detection zone 120, and (illustrated embodiment, described light source 100 only place 1 side of described touch detection zone 120; In other embodiments, described light source 100 can place 2 or 3 sides of described touch detection zone 120), described camera 140 is in order to obtain the touch data that betides on the described touch detection zone, and described control module is coupled to described camera 140 and utilization is determined touch location from the described touch data that described camera 140 obtains; Described light source 100 comprises luminophor 102, light conductor 104, reflecting plate 106 and astigmatism plate 108, described luminophor 102 places the port one 05 of described light conductor 104, described reflecting plate 106 is formed at described light conductor 104 interior 109 places, side away from described touch detection zone 120, described reflecting plate 106 and described light conductor 108 are discrete, astigmatism plate 108 is sandwiched between described reflecting plate 106 and the described light conductor 104, the part light of transmission arrives described reflecting plates 106 (reality is the reflecting surface 1064 towards described light conductor 104) via described astigmatism plate 108 in described light conductor 104, after being reflected by described reflecting plate 106 again through described astigmatism plate, be distributed in described touch detection zone 120 (shown in light 1-4 among Fig. 3) behind the light conductor; Simultaneously, the part light of transmission then directly is distributed in described touch detection zone 120 through the side 1092 of described light conductor 104 close described touch detection zones 120 in described light conductor 104.
Wherein, described astigmatism plate 108 can be discrete with described reflecting plate 106 or described light conductor 104, also can be all discrete with described reflecting plate 106 and described light conductor 104.
With similar other embodiment of this touch-screen second embodiment in, described astigmatism plate 108 also can be attached on described reflecting plate 106 and/or the described light conductor 104.That is, described astigmatism plate 108 can mechanical engagement or the mode of gluing joint be connected in described reflecting plate 106 and/or the described light conductor 104 sides 109 away from described touch detection zone 120.Described astigmatism plate 108 can be market any astigmatic device on sale, as long as can make divergence of beam.
Especially, described reflecting plate 106 or described reflecting plate 106 and described astigmatism plate 108 also can cover the end face 107 of described light conductor 104 or cover described end face 107 simultaneously and (described end face means the side regions of distance described touch detection zone 120 place plan ranges described light conductor 104 farthest in bottom surface 1072; Described bottom surface mean in the described light conductor 104 with described end face over against side regions; Figure 4 shows that described reflecting plate 106 and described astigmatism plate 108 cover the end face 107 of described light conductor 104 and the example of bottom surface 1072 simultaneously, as example, this moment, the xsect of described light conductor 104 was a rectangle), unnecessary scattering takes place to reduce the detection light that sends via described light conductor 104.Certainly, with similar other embodiment of the foregoing description in, can exist described reflector 106 to cover the end face of described light conductor 104 and described astigmatism plate 108 only covers the situation of side of the close described reflector of described light conductor 104.
In addition, this touch-screen second embodiment reaches choosing for described luminophor 102, light conductor 104 and reflecting plate 106 among other embodiment similar with it, and the relation of the position between described luminophor 102 and the light conductor 104, all can be with described in touch-screen first embodiment identical, do not repeat them here.
As shown in Figure 5, in the utility model touch-screen the 3rd embodiment, described touch-screen, comprise light source 100, touch detection zone 120, camera 140 (in other embodiments, also can be other optical sensing unit such as video camera, camera or optical sensor) and control module, described light source 100 places the side of described touch detection zone 120, and (illustrated embodiment, described light source 100 only place 1 side of described touch detection zone 120; In other embodiments, described light source 100 can place 2 or 3 sides of described touch detection zone 120), described camera 140 is in order to obtain the touch data that betides on the described touch detection zone 120, and described control module is coupled to described camera 140 and utilization is determined touch location from the described touch data that described camera 140 obtains; Described light source 100 comprises luminophor 102, light conductor 104 and reflectance coating 1062, described luminophor 102 places the port one 05 of described light conductor 104, described reflectance coating 1062 is attached to described light conductor 104 interior sides 109 away from described touch detection zone 120, the light that described luminophor 102 sends is injected described light conductor 104 and transmission in described light conductor 104, described light conductor 104 in the part light of transmission via 1062 reflections of described reflectance coating after again through side 1092 outgoing of described light conductor 104 close described touch detection zones 120 and be distributed in described touch detection zone 120 (shown in light 1-4 among Fig. 5); Simultaneously, in described light conductor 104 the part light of transmission then directly through described light conductor 104 near side 1092 outgoing of described touch detection zones 120 and be distributed in described touch detection zone 120.
Wherein, the mode that described reflectance coating 1062 is attached in the described light conductor 104 away from the side 109 of described touch detection zone 120 comprises: be connected in the described light conductor 104 away from the side 109 of described touch detection zone 120 (at this moment in the mode of mechanical engagement or gluing joint, described reflectance coating 1062 can be reflection bar or reflector plate), perhaps, with spraying, the mode of electroless plating or sputter is formed in the described light conductor 104 sides 109 away from described touch detection zone 120 (at this moment, the physical form in order to the material that forms described reflectance coating 1062 can be chemical solution or solid particle).
With similar other embodiment of this touch-screen the 3rd embodiment in, described reflectance coating 1062 also can be formed in the described light conductor 104 sides 109 away from described touch detection zone 120.At this moment, term " is formed at " to mean when forming described reflectance coating 1062 and need consumes described light conductor 104 materials of part, that is, described reflectance coating 1062 is embedded in the described light conductor 104.
In addition, with similar other embodiment of this touch-screen the 3rd embodiment in, described light source also comprises light-diffusing film, described reflectance coating 1062 adheres to via described light-diffusing film or is formed in the described light conductor 104 sides 109 away from described touch detection zone 120; The part light of transmission arrives described reflectance coating 1062 via described light-diffusing film in described light conductor 104, is penetrated by beam projecting face 1092 via described light-diffusing film and light conductor 104 backs after described reflectance coating 1062 reflections again; Simultaneously, in described light conductor 104 the part light of transmission then directly through described light conductor 104 near side 1092 outgoing of described touch detection zones 120 and be distributed in described touch detection zone 120.At this moment, described light-diffusing film is sandwiched between described reflectance coating 1062 and the described side 109.When described reflectance coating 1062 is attached to described side 109 via described light-diffusing film, described light-diffusing film is attached to described side 109 prior to described reflectance coating 1062, described light-diffusing film can mechanical engagement or the mode of gluing joint be connected to described side 109 (at this moment, described light-diffusing film can be astigmatic bar or scattering sheet, described light-diffusing film has good light transmittance), perhaps, be formed at described side 109 (at this moment, the physical form in order to the material that forms described light-diffusing film can be chemical solution or solid particle) in the mode of spraying, electroless plating or sputter; When described reflectance coating 1062 is formed at described side 109 via described light-diffusing film, described light-diffusing film is formed at described side 109 prior to described reflectance coating 1062, at this moment, described light-diffusing film is embedded in the described light conductor 104, and described reflectance coating 1062 is embedded in the described light-diffusing film again.
Especially, described reflectance coating 1062 or described reflectance coating 1062 and described light-diffusing film also can cover end face or the end face and the bottom surface of described light conductor 104, the light of transmission can reduce the detection light that sends via described light conductor 104 unnecessary scattering takes place via adhering to or being formed in the described reflectance coating 1062 or described light-diffusing film and the described light conductor 104 of described reflectance coating 1062 back backs of the end face of described light conductor 104 or end face and bottom surface in described light conductor 104.
In addition, this touch-screen the 3rd embodiment reaches choosing for described luminophor 102 and light conductor 104 among other embodiment similar with it, and the position between described luminophor 102 and the light conductor 104 relation, all can be with described in touch-screen first embodiment identical; With similar other embodiment of this touch-screen the 3rd embodiment in, identical with described in touch-screen the 3rd embodiment chosen to described reflectance coating 1062 do not repeat them here.
What need emphasize is, when in described light source, comprising astigmatic material (as astigmatism plate or light-diffusing film), the mode that mutual relationship between described astigmatic material and the described reflector element (as reflecting plate or reflectance coating) is not limited to limit in the foregoing description, as, can also be included on the described astigmatism plate and adhere to reflectance coating, adhering to light-diffusing film on the described reflector or in described reflecting plate and described light conductor, accompanying light-diffusing film etc. between side away from described touch detection zone, when comprising described astigmatic material with above-mentioned mutual relationship and described reflector element in the described light source, still can constitute the embodiment of touch-screen, specifically repeat no more.
Designer of the present utility model thinks, by design in the described light conductor near or the structure of the side of reflector elements such as carrying reflecting plate 106 or reflectance coating 1062, make when reflecting plate 106 being formed at 109 places, described side the effect of the angular setting light emission of light that can be by changing the described reflecting plate 106 of directive; Perhaps, when reflectance coating 1062 being adhered to or be formed at described side 109, can adjust the effect of light emission by the form that changes described reflectance coating 1062; The homogeneity that all can make enhancing be distributed in the light on the described touch-screen touch detection zone 120 becomes possibility.
Therefore, on the basis of above-mentioned each touch-screen embodiment,, can constitute more embodiment of the utility model touch-screen to carrying out architecture advances away from the side 109 of described touch detection zone 120 in the described light conductor 104.For convenience of description, in this class embodiment, only the structure to described light conductor 104 is described.
In conjunction with Fig. 6 and shown in Figure 7, in this touch-screen the 4th embodiment, with described light conductor 104 is that right cylinder is an example, go up (for this prerequisite in the profile direction of described light conductor 104 (tangent plane that when xx ' direction is cut described light conductor 104, obtains), follow-up touch-screen embodiment is routine therewith identical, repeat no more), side 109 away from described touch detection zone 120 in the described light conductor 104 comprises at least two inclined-plane groups, each described inclined-plane group comprises two inclined- planes 1042 and 1044 with angle 1043, each described inclined-plane group is arranged continuously, and adjacent described inclined-plane group can have identical angle 1043.Wherein, on the border when tip of described angle 1043 can be arranged in described light conductor 104 and do not form described inclined-plane group or border, when being positioned at described border, light via the reflection of described inclined-plane group is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described angle 1043.
In addition, in similar other embodiment of this touch-screen the 4th embodiment, described light source 100 can comprise a described luminophor 102, described luminophor 102 places a port one 05 of described light conductor 104, at this moment, the angle 1043 of each described inclined-plane group can be reduced gradually by port one 05 to the port one 05 away from described luminophor 102 near described luminophor 102; Described light source 100 can comprise that 102, two described luminophors 102 of two described luminophors place two port ones 05 of described light conductor 104 respectively, and at this moment, the angle 1043 of each described inclined-plane group can be reduced gradually by port one 05 to the center of described light conductor 104.
Especially, the height of each described inclined-plane group can equate.The height of described inclined-plane group means by the end points of described angle 1043 to connecting in the described inclined-plane group vertical range of line between two inclined- planes 1042 and 1044 another end points.When described light source 100 comprised a described luminophor 102, the height of each described inclined-plane group can be increased gradually by port one 05 to the port one 05 away from described luminophor 102 near described luminophor 102; When described light source 100 comprised two described luminophors 102, the height of each described inclined-plane group can be increased gradually by port one 05 to the center of described light conductor 104.
It should be noted that, designer of the present utility model thinks after analyzing, reduce the angle of each described inclined-plane group, perhaps, increase the height of each described inclined-plane group, the chance that the light increase transmitted in described light conductor is reflected is beneficial to and strengthens the homogeneity that is distributed in the light on the described touch detection zone.
In conjunction with shown in Figure 8, in this touch-screen the 5th embodiment, on the profile direction of described light conductor 104, side 109 away from described touch detection zone 120 in the described light conductor 104 comprises at least two cambered surfaces 1046, each described cambered surface 1046 is arranged continuously, and adjacent described cambered surface 1046 has identical arc length and radian.Wherein, on the border when tip of described cambered surface 1046 can be arranged in described light conductor 104 and do not form each described cambered surface 1046 or border, when being positioned at described border, light via each described cambered surface 1046 reflection is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described cambered surface 1046.
In addition, in similar other embodiment of this touch-screen the 5th embodiment, when described light source 100 comprises a described luminophor 102, described luminophor 102 places a port one 05 of described light conductor 104, at this moment, having the radian of each described cambered surface 1046 of identical arc length can be by subtracting gradually greatly near port one 05 to the port one 05 away from described luminophor 102 of described luminophor 102; Arc length with each described cambered surface 1046 of identical radian measure can be reduced gradually by port one 05 to the port one 05 away from described luminophor 102 near described luminophor 102; When described light source 100 comprises two described luminophors 102, two described luminophors 102 place two port ones 05 of described light conductor 104 respectively, at this moment, the radian with each described cambered surface 1046 of identical arc length is increased gradually by port one 05 to the center of described light conductor 104; Perhaps, the arc length with each described cambered surface 1046 of identical radian measure is reduced gradually by port one 05 to the center of described light conductor 104.At this moment, the tip of each described cambered surface 1046 can be not point-blank.
It should be noted that, designer of the present utility model thinks after analyzing, reduce to have the arc length of each described cambered surface of identical radian measure, perhaps, increase the radian of each described cambered surface with identical arc length, the chance that the light increase transmitted in described light conductor is reflected is beneficial to strengthen and is distributed in the homogeneity that described touch-screen touches the light on the detection zone.
In conjunction with shown in Figure 9, in this touch-screen the 6th embodiment, on the profile direction of described light conductor 104, side 109 away from described touch detection zone 120 in the described light conductor 104 comprises at least two rectangular cross sections 1048, each described rectangular cross section 1048 is arranged continuously, and 1048 distances of adjacent described rectangular cross section equate.Wherein, the distance of 1048 of described rectangular cross sections means the distance between 1048 relative sides of adjacent described rectangular cross section.
In addition, on the border when tip of each described rectangular cross section 1048 can be arranged in described light conductor and do not form each described rectangular cross section 1048 or border, when being positioned at described border, light via each described rectangular cross section 1048 reflection is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described rectangular cross section 1048.
In addition, in similar other embodiment of this touch-screen the 6th embodiment, when described light source 100 comprises a described luminophor 102, described luminophor 102 places a port one 05 of described light conductor 104, at this moment, adjacent 1048 distances of described rectangular cross section can be reduced gradually by port one 05 to the port one 05 away from described luminophor 102 near described luminophor 102; When described light source 100 comprises two described luminophors 102, two described luminophors 102 place two port ones 05 of described light conductor 104 respectively, at this moment, adjacent 1048 distances of described rectangular cross section are reduced gradually by port one 05 to the center of described light conductor 104.
Especially, the height of each described rectangular cross section 1048 can equate.When described light source 100 comprised a described luminophor 102, the height of each described rectangular cross section 1048 can be increased gradually by port one 05 to the port one 05 away from described luminophor 102 near described luminophor 102; When described light source 100 comprised two described luminophors 102, the height of each described rectangular cross section 1048 can be increased gradually by port one 05 to the center of described light conductor 104.
It should be noted that, designer of the present utility model thinks after analyzing, reduce 1048 distances of adjacent described rectangular cross section, perhaps, increase the height of described rectangular cross section 1048, the chance that the light increase of transmission is reflected is beneficial to and strengthens the homogeneity that is distributed in the light on the described touch detection zone.
In conjunction with shown in Figure 10, in this touch-screen the 7th embodiment, the side 109 away from described touch detection zone 120 in the described light conductor 104 can be plane 1140, and described plane 1140 is spent less than 90 with the angle of described touch detection zone 120.Can reduce the probability that unnecessary scattering takes place light.
In conjunction with Fig. 6 and shown in Figure 11, in this touch-screen the 8th embodiment, with described light conductor 104 is that right cylinder is an example, go up (for this prerequisite in the square section of described light conductor 104 direction (tangent plane that when yy ' direction is cut described light conductor 104, obtains), follow-up touch-screen embodiment is routine therewith identical, repeat no more), side 109 away from described touch detection zone 120 in the described light conductor 104 comprises at least two inclined-plane groups, each described inclined-plane group comprises two inclined- planes 1142 and 1144 with angle 1143, each described inclined-plane group is arranged continuously, and adjacent described inclined-plane group can have identical angle 1143.Wherein, on the border when tip of described angle 1143 can be arranged in described light conductor 104 and do not form described inclined-plane group or border, when being positioned at described border, light via the reflection of described inclined-plane group is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described angle 1143.
In addition, in similar other embodiment of this touch-screen the 8th embodiment, the height of each described inclined-plane group can equate.The angle 1143 of each described inclined-plane group can be reduced gradually by both sides to the center of described side.Especially, the height of each described inclined-plane group can be increased gradually by both sides to the center of described side.Reach among other embodiment similar with it at this touch-screen the 8th embodiment, the straight line that is parallel to each described inclined- plane 1142 and 1144 also is parallel to described touch detection zone 120.
It should be noted that, designer of the present utility model thinks after analyzing, reduce the angle 1143 of each described inclined-plane group, perhaps, increase the height of each described inclined-plane group, the chance that the light increase of transmission is reflected is beneficial to and strengthens the homogeneity that is distributed in the light on the described touch detection zone.
As shown in figure 12, in this touch-screen the 9th embodiment, on the direction of the square section of described light conductor 104, side 109 away from described touch detection zone 120 in the described light conductor 104 comprises at least two cambered surfaces 1146, each described cambered surface 1146 is arranged continuously, and adjacent described cambered surface 1146 has identical arc length and radian.Wherein, on the border when tip of described cambered surface 1146 can be arranged in described light conductor 104 and do not form each described cambered surface 1146 or border, when being positioned at described border, light via each described cambered surface 1146 reflection is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described cambered surface 1146.
In addition, in similar other embodiment of this touch-screen the 9th embodiment, the radian with each described cambered surface 1146 of identical arc length can be subtracted gradually by both sides to the center of described side greatly; Arc length with each described cambered surface 1146 of identical radian measure can be reduced gradually by both sides to the center of described side.At this moment, the tip of each described cambered surface 1146 can be not point-blank.Reach among other embodiment similar with it at this touch-screen the 9th embodiment, the straight line that is parallel to each described cambered surface 1146 central shaft also is parallel to described touch detection zone 120.
It should be noted that, designer of the present utility model thinks after analyzing, reduce to have the arc length of each described cambered surface 1146 of identical radian measure, perhaps, increase the radian of each described cambered surface 1146 with identical arc length, the chance that the light increase of transmission is reflected is beneficial to and strengthens the homogeneity that is distributed in the light on the described touch detection zone.
In conjunction with shown in Figure 13, in this touch-screen the tenth embodiment, on the direction of the square section of described light conductor 104, side 109 away from described touch detection zone 120 in the described light conductor 104 comprises at least two rectangular cross sections 1148, each described rectangular cross section 1148 is arranged continuously, and 1148 distances of adjacent described rectangular cross section equate.Wherein, the distance of 1148 of described rectangular cross sections means the distance between 1148 relative sides of adjacent described rectangular cross section.In addition, on the border when tip of each described rectangular cross section 1148 can be arranged in described light conductor 104 and do not form each described rectangular cross section 1148 or border, when being positioned at described border, light via each described rectangular cross section 1148 reflection is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described rectangular cross section 1148.
In addition, in similar other embodiment of this touch-screen the tenth embodiment, 1148 distances of adjacent described rectangular cross section can be reduced gradually by both sides to the center of described side.Especially, the height of each described rectangular cross section 1148 can equate.The height of each described rectangular cross section 1148 also can be increased gradually by both sides to the center of described side.Reach among other embodiment similar with it at this touch-screen the tenth embodiment, the straight line that is parallel to each described rectangular cross section 1148 central shaft also is parallel to described touch detection zone 120.
It should be noted that, designer of the present utility model thinks after analyzing, reduce 1148 distances of adjacent described rectangular cross section, perhaps, increase the height of described rectangular cross section 1148, the chance that the light increase of transmission is reflected is beneficial to and strengthens the homogeneity that is distributed in the light on the described touch detection zone.
Obviously, above-mentioned touch-screen the 4th to the 6th embodiment and related embodiment thereof are combined with the 8th to the tenth embodiment and related embodiment thereof, perhaps, above-mentioned touch-screen the 4th to the tenth embodiment and related embodiment thereof are combined with first to the 3rd embodiment and related embodiment, can obtain more embodiment of the utility model touch-screen, repeat no more.
In addition, the architecture advances of carrying out away from the side of described touch detection zone in to described light conductor in above-mentioned touch-screen the 4th to the tenth embodiment and related embodiment thereof is (as forming the inclined-plane group, cambered surface or rectangular cross section, even plane), can put on the reflecting surface of reflecting plate equally, promptly, described reflecting surface is carried out architecture advances, form the inclined-plane group described in the previous embodiment thereon, cambered surface, rectangular cross section or plane, still can constitute the embodiment of touch-screen, and the embodiment that still can constitute touch-screen that combines of such embodiment and previous embodiment repeats no more.
The utility model also provides a kind of touch system, and described touch system comprises above-mentioned touch-screen, and described touch system can be the touch display that described touch-screen is installed in display surface and forms.
The utility model also provides a kind of light source, in the utility model light source first embodiment, described light source comprises luminophor, light conductor and reflecting plate, described luminophor places the port of described light conductor, described reflecting plate is formed at the place, side of described light conductor, described reflecting plate and described light conductor are discrete, the light that described luminophor sends is injected described light conductor and is transmitted in described light conductor, the part light that in described light conductor, transmits after described reflecting plate (actual be reflecting surface) reflection towards described light conductor again through described light conductor away from the side outgoing of described reflecting plate and be distributed in described touch detection zone; Simultaneously, the part light that transmits in described light conductor is then directly through the side outgoing of described light conductor away from described reflecting plate.
Wherein, described luminophor can adopt light emitting diode or cold-cathode fluorescence lamp, preferably infrarede emitting diode.Described light conductor can be a kind of in the light transmitting materials such as glass, optical fiber or acrylic.Described light conductor can be multiple shapes such as right cylinder, triangular prism or rectangular parallelepiped, wherein, in the described light conductor away from the side of described reflecting plate (promptly, during the beam projecting face) for plane (light conductor is the side in triangular prism or the rectangular parallelepiped as described), the angle that makes described plane and beam projecting face is less than 90 °, can reduce the detection light that sends via described light conductor unnecessary scattering takes place, but described side is not limited only to the plane, also can be the surface of other type, the side is rough surface as described.Described reflecting plate can be market any reflection unit on sale, as reflection bar, level crossing or total reflection prism assembly etc.
It should be noted that, place the mode of the port of described light conductor to comprise described luminophor: be formed with recess in described port, described luminophor places described recess, and (profile of described recess can be arbitrary shapes such as taper, arc or rectangle; The square section of described recess can be arbitrary shapes such as circle, ellipse, square or rectangle); Perhaps, described luminophor is connected to the port of described light conductor in the mode of mechanical engagement or gluing joint.Wherein, light-diffusing film can be formed with, the homogeneity of injecting the light of described light conductor by described luminophor can be strengthened at described recessed surfaces.
In addition, the number of described luminophor can be one, two or more, and when including only a described luminophor in the described light source, described luminophor places arbitrary port of described light conductor; When comprising two described luminophors in the described light source, each described luminophor places the port of described light conductor respectively.For strengthening the brightness of the light that sends by described light source, in described light source, comprise two described luminophors usually, also describe in the utility model as example, the related embodiment that comprises a described luminophor in the described light source is not given unnecessary details.
With similar other embodiment of this light source first embodiment in, described reflecting plate can be attached on the described light conductor.That is, described reflecting plate can mechanical engagement or the mode of gluing joint be connected to the side of described light conductor.
In the utility model light source second embodiment, described light source comprises luminophor, light conductor, reflecting plate and astigmatism plate, described luminophor places the port of described light conductor, described reflecting plate is formed at the place, side of described light conductor, described reflecting plate and described light conductor are discrete, described astigmatism plate is sandwiched between described reflecting plate and the described light conductor, the part light that transmits in described light conductor arrives described reflecting plate (actual be the reflecting surface towards described light conductor) via described astigmatism plate, by behind the described baffle reflection again through described astigmatism plate, behind the light conductor by in the described light conductor away from the side outgoing of described reflecting plate; Simultaneously, the part light that transmits in described light conductor is then directly through the side outgoing of described light conductor away from described reflecting plate.
Wherein, described astigmatism plate can be discrete with described reflecting plate or described light conductor, also can be all discrete with described reflecting plate and described light conductor.
With similar other embodiment of this light source second embodiment in, described astigmatism plate also can be attached on described reflecting plate and/or the described light conductor.That is, described astigmatism plate can mechanical engagement or the mode of gluing joint be connected to the side of described reflecting plate and/or described light conductor.Described astigmatism plate can be market any astigmatic device on sale, as long as can make divergence of beam.
Especially, described reflecting plate or described reflecting plate and described astigmatism plate also can cover the end face of described light conductor or end face and bottom surface, and (described end face means the side regions with described light conductor described light conductor relative with its placed side when it is vertically placed, described bottom surface mean with described light conductor when it is vertically placed the placed side and in described light conductor side, suitably extend and the side that obtains by described placed side), unnecessary scattering takes place to reduce the detection light that sends via described light conductor.
In addition, this light source second embodiment reaches choosing for described luminophor, light conductor and reflecting plate among other embodiment similar with it, and the position between described luminophor and light conductor relation, all can be with described in light source first embodiment identical, do not repeat them here.
In the utility model light source the 3rd embodiment, described light source comprises luminophor, light conductor and reflectance coating, described luminophor places the port of described light conductor, described reflectance coating is attached to the side of described light conductor, the light that described luminophor sends is injected described light conductor and is transmitted in described light conductor, the part light that in described light conductor, transmits via the reflection of described reflectance coating after again in described light conductor away from the side outgoing of described reflectance coating; Simultaneously, the part light that transmits in described light conductor is then directly through the side outgoing of described light conductor away from described reflectance coating.
Wherein, the mode that described reflectance coating is attached to the side of described light conductor comprises: the side that is connected to described light conductor in the mode of mechanical engagement or gluing joint (at this moment, described reflectance coating can be reflection bar or reflector plate), perhaps, be formed at the side (at this moment, the physical form in order to the material that forms described reflectance coating can be chemical solution or solid particle) of described light conductor in the mode of spraying, electroless plating or sputter.
With similar other embodiment of this light source the 3rd embodiment in, described reflectance coating also can be formed at the side of described light conductor.At this moment, term " is formed at " to mean when forming described reflectance coating and need consumes the described light conductor material of part, that is, described reflectance coating is embedded in the described light conductor.
In addition, with similar other embodiment of this light source the 3rd embodiment in, described light source also comprises light-diffusing film, described reflectance coating adheres to or is formed at the side of described light conductor via described light-diffusing film; The part light that transmits in described light conductor arrives described reflectance coating via described light-diffusing film, by after the reflection of described reflectance coating again via penetrating by the beam projecting face behind described light-diffusing film and the light conductor; Simultaneously, the part light that transmits in described light conductor is then directly through the side outgoing of described light conductor away from described reflectance coating.At this moment, described light-diffusing film is sandwiched between described reflectance coating and the described side.When described reflectance coating is attached to described side via described light-diffusing film, described light-diffusing film is attached to described side prior to described reflectance coating, described light-diffusing film can mechanical engagement or the mode of gluing joint be connected to described side (at this moment, described light-diffusing film can be astigmatic bar or scattering sheet, described light-diffusing film has good light transmittance), perhaps, be formed at described side (at this moment, the physical form in order to the material that forms described light-diffusing film can be chemical solution or solid particle) in the mode of spraying, electroless plating or sputter; When described reflectance coating was formed at described side via described light-diffusing film, described light-diffusing film was formed at described side prior to described reflectance coating, and at this moment, described light-diffusing film is embedded in the described light conductor, and described reflectance coating is embedded in the described light-diffusing film again.
Especially, described reflectance coating or described reflectance coating and described light-diffusing film also can cover the end face of described light conductor, the light that transmits in described light conductor can reduce the detection light that sends via described light conductor unnecessary scattering takes place via adhering to or being formed at behind the described reflectance coating of end face of described light conductor or described light-diffusing film and the described reflectance coating in the described light conductor of back.
In addition, for the choosing of described luminophor and light conductor, and the position between described luminophor and the light conductor concerns among this light source the 3rd embodiment and other embodiment similar with it, all can be with described in light source first embodiment identical; With similar other embodiment of this light source the 3rd embodiment in, identical with described in light source the 3rd embodiment chosen to described reflectance coating do not repeat them here.
What need emphasize is, when in described light source, comprising astigmatic material (as astigmatism plate or light-diffusing film), the mode that mutual relationship between described astigmatic material and the described reflector element (as reflecting plate or reflectance coating) is not limited to limit in the foregoing description, as, can also be included on the described astigmatism plate and adhere to reflectance coating, adhering to light-diffusing film on the described reflector or in described reflecting plate and described light conductor, accompanying light-diffusing film etc. between side away from described touch detection zone, when comprising described astigmatic material with above-mentioned mutual relationship and described reflector element in the described light source, still can constitute the embodiment of light source, specifically repeat no more.
Designer of the present utility model thinks, by design in the described light conductor near or the structure of the side of reflector elements such as carrying reflecting plate and reflectance coating, make when reflecting plate being formed at place, described side the effect of the angular setting light emission of light that can be by changing the described reflecting plate of directive; Perhaps, when reflectance coating being adhered to or be formed at described side, can adjust the effect of light emission by the form that changes described reflectance coating; All can make the homogeneity of the light that enhancing sent by described light source become possibility.
Therefore, on the basis of above-mentioned each light source embodiment, architecture advances is carried out in side close in the described light conductor or the carrying reflector element, can constitute more embodiment of the utility model light source.For convenience of description, in this class embodiment, only the structure to described light conductor is described.
In this light source the 4th embodiment, with described light conductor is that right cylinder is an example, in the profile direction of described light conductor (as shown in Figure 6, the tangent plane that when xx ' direction is cut described light conductor, obtains) goes up (for this prerequisite, follow-up light source embodiment is routine therewith identical, repeat no more), side close or the carrying reflector element comprises at least two inclined-plane groups in the described light conductor, each described inclined-plane group comprises two inclined-planes with angle, each described inclined-plane group is arranged continuously, and adjacent described inclined-plane group can have identical angle.Wherein, on the border when tip of described angle can be arranged in described light conductor and do not form described inclined-plane group or border, when being positioned at described border, light via the reflection of described inclined-plane group is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described angle.
In addition, in similar other embodiment of this light source the 4th embodiment, described light source can comprise a described luminophor, described luminophor places a port of described light conductor, at this moment, the angle of each described inclined-plane group can be reduced gradually by port to the port away from described luminophor near described luminophor; Described light source can comprise two described luminophors, and two described luminophors place two ports of described light conductor respectively, and at this moment, the angle of each described inclined-plane group can be reduced gradually by port to the center of described light conductor.
Especially, the height of each described inclined-plane group can equate.The height of described inclined-plane group means by the end points of described angle to connecting in the described inclined-plane group vertical range of line between another end points of two inclined-planes.When described light source comprised a described luminophor, the height of each described inclined-plane group can be increased gradually by port to the port away from described luminophor near described luminophor; When described light source comprised two described luminophors, the height of each described inclined-plane group can be increased gradually by port to the center of described light conductor.
It should be noted that designer of the present utility model thinks after analyzing, reduces the angle of each described inclined-plane group, perhaps, increase the degree of depth of each described inclined-plane group, the chance that the light increase transmitted in described light conductor is reflected is beneficial to the homogeneity of the light that enhancing sent by described light source.
In this light source the 5th embodiment, on the profile direction of described light conductor, side close or the carrying reflector element comprises at least two cambered surfaces in the described light conductor, and each described cambered surface is arranged continuously, and adjacent described cambered surface has identical arc length and radian.Wherein, on the border when tip of described cambered surface can be arranged in described light conductor and do not form each described cambered surface or border, when being positioned at described border, light via each described cambered surface reflection is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described cambered surface.
In addition, in similar other embodiment of this light source the 5th embodiment, when described light source comprises a described luminophor, described luminophor places a port of described light conductor, at this moment, having the radian of each described cambered surface of identical arc length can be by subtracting gradually greatly near the port of described luminophor to the port away from described luminophor; Arc length with each described cambered surface of identical radian measure can be reduced gradually by port to the port away from described luminophor near described luminophor; When described light source comprised two described luminophors, two described luminophors placed two ports of described light conductor respectively, and at this moment, the radian with each described cambered surface of identical arc length is increased gradually by port to the center of described light conductor; Perhaps, the arc length with each described cambered surface of identical radian measure is reduced gradually by port to the center of described light conductor.At this moment, the tip of each described cambered surface can be not point-blank.
It should be noted that, designer of the present utility model thinks after analyzing, reduce to have the arc length of each described cambered surface of identical radian measure, perhaps, increase the radian of each described cambered surface with identical arc length, the chance that the light increase transmitted in described light conductor is reflected is beneficial to the homogeneity of the light that enhancing sent by described light source.
In this light source the 5th embodiment, on the profile direction of described light conductor, side close or the carrying reflector element comprises at least two rectangular cross sections in the described light conductor, and each described rectangular cross section is arranged continuously, and distance equates between adjacent described rectangular cross section.Wherein, the distance between described rectangular cross section means the distance between side relative between adjacent described rectangular cross section.
In addition, on the border when tip of each described rectangular cross section can be arranged in described light conductor and do not form each described rectangular cross section or border, when being positioned at described border, light via each described rectangular cross section reflection is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described rectangular cross section.
In addition, in similar other embodiment of this light source the 5th embodiment, when described light source comprises a described luminophor, described luminophor places a port of described light conductor, at this moment, distance can be reduced gradually by port to the port away from described luminophor near described luminophor between adjacent described rectangular cross section; When described light source comprised two described luminophors, two described luminophors placed two ports of described light conductor respectively, and at this moment, distance is reduced gradually by port to the center of described light conductor between adjacent described rectangular cross section.
Especially, the height of each described rectangular cross section can equate.When described light source comprised a described luminophor, the height of each described rectangular cross section can be increased gradually by port to the port away from described luminophor near described luminophor; When described light source comprised two described luminophors, the height of each described rectangular cross section can be increased gradually by port to the center of described light conductor.
It should be noted that, designer of the present utility model thinks after analyzing, reduce distance between adjacent described rectangular cross section, perhaps, increase the height of described rectangular cross section, the chance that the light increase transmitted in described light conductor is reflected is beneficial to the homogeneity of the light that enhancing sent by described light source.
In this light source the 6th embodiment, side close or the carrying reflector element can be the plane in the described light conductor, and the angle of described plane and beam projecting face is less than 90 °.Can reduce the probability that unnecessary scattering takes place light.
In this light source the 7th embodiment, with described light conductor is that right cylinder is an example, in the square section of described light conductor direction (as shown in Figure 6, the tangent plane that when yy ' direction is cut described light conductor, obtains) goes up (for this prerequisite, follow-up light source embodiment is routine therewith identical, repeat no more), side close or the carrying reflector element comprises at least two inclined-plane groups in the described light conductor, each described inclined-plane group comprises two inclined-planes with angle, each described inclined-plane group is arranged continuously, and adjacent described inclined-plane group can have identical angle.Wherein, on the border when tip of described angle can be arranged in described light conductor and do not form described inclined-plane group or border, when being positioned at described border, light via the reflection of described inclined-plane group is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described angle.
In addition, in similar other embodiment of this light source the 7th embodiment, the height of each described inclined-plane group can equate.The angle of each described inclined-plane group also can be reduced gradually by both sides to the center of described side.Especially, the height of each described inclined-plane group can be increased gradually by both sides to the center of described side.Reach among other embodiment similar with it at this light source the 7th embodiment, the straight line that is parallel to each described inclined-plane also is parallel to the axle of described light conductor.
It should be noted that designer of the present utility model thinks after analyzing, reduces the angle of each described inclined-plane group, perhaps, increase the degree of depth of each described inclined-plane group, the chance that the light increase transmitted in described light conductor is reflected is beneficial to the homogeneity of the light that enhancing sent by described light source.
In this light source the 8th embodiment, on the direction of the square section of described light conductor, side close or the carrying reflector element comprises at least two cambered surfaces in the described light conductor, and each described cambered surface is arranged continuously, and adjacent described cambered surface has identical arc length and radian.Wherein, on the border when tip of described cambered surface can be arranged in described light conductor and do not form each described cambered surface or border, when being positioned at described border, light via each described cambered surface reflection is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described cambered surface.
In addition, in similar other embodiment of this light source the 8th embodiment, the radian with each described cambered surface of identical arc length can be subtracted gradually by both sides to the center of described side greatly; Arc length with each described cambered surface of identical radian measure can be reduced gradually by both sides to the center of described side.At this moment, the tip of each described cambered surface can be not point-blank.Reach among other embodiment similar with it at this light source the 8th embodiment, the straight line that is parallel to each described cambered surface central shaft also is parallel to the axle of described light conductor.
It should be noted that, designer of the present utility model thinks after analyzing, reduce to have the arc length of each described cambered surface of identical radian measure, perhaps, increase the radian of each described cambered surface with identical arc length, the chance that the light increase transmitted in described light conductor is reflected is beneficial to the homogeneity of the light that enhancing sent by described light source.
In this light source the 9th embodiment, on the direction of the square section of described light conductor, side close or the carrying reflector element comprises at least two rectangular cross sections in the described light conductor, and each described rectangular cross section is arranged continuously, and distance equates between adjacent described rectangular cross section.Wherein, the distance between described rectangular cross section means the distance between side relative between adjacent described rectangular cross section.In addition, on the border when tip of each described rectangular cross section can be arranged in described light conductor and do not form each described rectangular cross section or border, when being positioned at described border, light via each described rectangular cross section reflection is more, it is more obvious to improve its inhomogeneity effect, when being positioned at outside the described border, also more save the space with respect to the tip of described rectangular cross section.
In addition, in similar other embodiment of this light source the 9th embodiment, distance can be reduced gradually by both sides to the center of described side between adjacent described rectangular cross section.Especially, the height of each described rectangular cross section can equate.The height of each described rectangular cross section also can be increased gradually by both sides to the center of described side.Reach among other embodiment similar with it at this light source the 9th embodiment, the straight line that is parallel to each described rectangular cross section central shaft also is parallel to the axle of described light conductor.
It should be noted that, designer of the present utility model thinks after analyzing, reduce distance between adjacent described rectangular cross section, perhaps, increase the height of described rectangular cross section, the chance that the light increase transmitted in described light conductor is reflected is beneficial to the homogeneity of the light that enhancing sent by described light source.
Obviously, above-mentioned light source the 4th to the 6th embodiment and related embodiment thereof are combined with the 8th to the tenth embodiment and related embodiment thereof, perhaps, above-mentioned light source the 4th to the tenth embodiment and related embodiment thereof are combined with first to the 3rd embodiment and related embodiment, can obtain more embodiment of the utility model light source, repeat no more.
In addition, the architecture advances of in above-mentioned light source the 4th to the tenth embodiment and related embodiment thereof described light conductor side being carried out is (as forming inclined-plane group, cambered surface or rectangular cross section, even plane), can put on the reflecting surface of reflecting plate equally, promptly, described reflecting surface is carried out architecture advances, form inclined-plane group, cambered surface, rectangular cross section or the plane described in the previous embodiment thereon, still can constitute the embodiment of light source, and the embodiment that still can constitute light source that combines of such embodiment and previous embodiment repeats no more.
To sum up, utilize described luminophor and light conductor to constitute area source, utilize described reflector element to improve the homogeneity of the light that sends by described area source based on principle of reflection again, can make the homogeneity that strengthens light become possibility.
Method described in the utility model is not limited to the embodiment described in the embodiment.As, adhere in the port of light conductor or be formed with light-diffusing film, also be beneficial to enhancing and inject the homogeneity of the light of described light conductor by described luminophor, those skilled in the art draw other embodiment according to the technical solution of the utility model, belong to technological innovation scope of the present utility model equally.

Claims (29)

1. touch-screen, comprise light source, touch detection zone, optical sensing unit and control module, described light source places at least one side of described touch detection zone, described optical sensing unit is in order to obtain the touch data that betides on the described touch detection zone, and described control module is coupled to described optical sensing unit and utilizes the described touch data that obtains from described optical sensing unit to determine touch location; It is characterized in that: described light source comprises luminophor, light conductor and reflector element, described luminophor places the port of described light conductor, described reflector element is formed at the interior place, side away from described touch detection zone of described light conductor, the light that described luminophor sends is injected described light conductor and is transmitted in described light conductor, and the part light that transmits in described light conductor is distributed in described touch detection zone after reflecting via described reflector element.
2. touch-screen according to claim 1, it is characterized in that: described reflector element is a reflecting plate, described reflecting plate and described light conductor are discrete or be attached to the interior side away from described touch detection zone of described light conductor, and the side towards described light conductor in the described reflecting plate is formed with reflecting surface.
3. touch-screen according to claim 1 is characterized in that: described reflector element is a reflectance coating, and described reflectance coating adheres to or is formed in the described light conductor side away from described touch detection zone.
4. touch-screen according to claim 2, it is characterized in that: the side away from described touch detection zone in described reflecting surface and/or the described light conductor comprises at least two inclined-plane groups, each described inclined-plane group comprises two inclined-planes with angle, and each described inclined-plane group is arranged continuously; Adjacent described inclined-plane group has identical angle, perhaps, described inclined-plane group is during along the profile direction of described light conductor, the angle of each described inclined-plane group is reduced gradually by port to the center of described light conductor and/or described reflecting plate, described inclined-plane group is during along the square section direction of described light conductor, the angle of each described inclined-plane group is by reducing gradually away from the side of described touch detection zone and/or both sides to the center of described reflecting surface in the described light conductor, and the straight line that is parallel to each described inclined-plane also is parallel to described touch detection zone.
5. touch-screen according to claim 4 is characterized in that: each described inclined-plane group is contour; Perhaps, described inclined-plane group is during along the profile direction of described light conductor, the height of each described inclined-plane group is increased gradually by port to the center of described light conductor and/or described reflecting plate, described inclined-plane group is during along the square section direction of described light conductor, and the height of each described inclined-plane group is by increasing gradually away from the side of described touch detection zone and/or both sides to the center of described reflecting surface in the described light conductor.
6. touch-screen according to claim 2 is characterized in that: the side away from described touch detection zone in described reflecting surface and/or the described light conductor comprises at least two cambered surfaces, and each described cambered surface is arranged continuously; Adjacent described cambered surface has identical arc length and radian, perhaps, each described cambered surface is during along the profile direction of described light conductor, radian with each described cambered surface of identical arc length is increased gradually by port to the center of described light conductor and/or described reflecting plate, arc length with each described cambered surface of identical radian measure is reduced gradually by port to the center of described light conductor and/or described reflecting plate, each described cambered surface is during along the square section direction of described light conductor, and the radian of each described cambered surface with identical arc length is by increasing gradually away from the side of described touch detection zone and/or both sides to the center of described reflecting surface in the described light conductor; The arc length of each described cambered surface with identical radian measure is by reducing gradually away from the side of described touch detection zone and/or both sides to the center of described reflecting surface in the described light conductor, and the straight line that is parallel to each described cambered surface central shaft also is parallel to described touch detection zone.
7. touch-screen according to claim 2 is characterized in that: the side away from described touch detection zone in described reflecting surface and/or the described light conductor comprises at least two rectangular cross sections, and each described rectangular cross section is arranged continuously; Distance equates between adjacent described rectangular cross section, and perhaps, each described rectangular cross section is during along the profile direction of described light conductor, and distance is reduced gradually by port to the center of described light conductor and/or described reflecting plate between adjacent described rectangular cross section; Each described rectangular cross section is during along the square section direction of described light conductor, distance is by reducing gradually away from the side of described touch detection zone and/or both sides to the center of described reflecting surface in the described light conductor between adjacent described rectangular cross section, and the straight line that is parallel to each described rectangular cross section central shaft also is parallel to described touch detection zone.
8. touch-screen according to claim 7, it is characterized in that: each described rectangular cross section is contour, perhaps, each described rectangular cross section is during along the profile direction of described light conductor, and the height of each described rectangular cross section is increased by port to the center of described light conductor and/or described reflecting plate; Each described rectangular cross section is during along the square section direction of described light conductor, and the height of each described rectangular cross section is by increasing gradually away from the side of described touch detection zone and/or both sides to the center of described reflecting surface in the described light conductor.
9. touch-screen according to claim 2 is characterized in that: the side away from described touch detection zone in described reflecting surface and/or the described light conductor is the plane, and the angle of described plane and described touch detection zone is less than 90 degree.
10. touch-screen according to claim 1 is characterized in that: described reflector element covers the end face and the bottom surface of described light conductor.
11. according to each described touch-screen in the claim 1 to 10, it is characterized in that: described light source also comprises astigmatic material, described astigmatic material is between described reflector element and described light conductor, the part light that transmits in described light conductor arrives described reflector element through described astigmatic material, is distributed in described touch detection zone again after the described reflector element reflection behind described astigmatic material, light conductor.
12. touch-screen according to claim 1 is characterized in that: described luminophor is light emitting diode or cold-cathode fluorescence lamp.
13. touch-screen according to claim 1 is characterized in that: described light conductor is a kind of in glass, optical fiber or the acrylic.
14. touch-screen according to claim 1 is characterized in that: adhere in the port of described light conductor or be formed with astigmatic material, the light that described luminophor sends is injected described light conductor via described astigmatic material.
15. a touch system comprises by each described touch-screen among the claim 1-14.
16. light source, it is characterized in that: described light source comprises luminophor, light conductor and reflector element, described luminophor places the port of described light conductor, described reflector element is formed at the place, side of described light conductor, the light that described luminophor sends is injected described light conductor and is transmitted in described light conductor, the part light that in described light conductor, transmits through described reflector element reflection back by described light conductor in away from the side ejaculation of described reflector element.
17. light source according to claim 16 is characterized in that: described reflector element is a reflecting plate, and described reflecting plate and described light conductor are discrete or be attached to the side of described light conductor, and the side towards described light conductor in the described reflecting plate is formed with reflecting surface.
18. light source according to claim 16 is characterized in that: described reflector element is a reflectance coating, and described reflectance coating adheres to or be formed at the side of described light conductor.
19. light source according to claim 17, it is characterized in that: the side near described reflector element in described reflecting surface and/or the described light conductor comprises at least two inclined-plane groups, each described inclined-plane group comprises two inclined-planes with angle, and each described inclined-plane group is arranged continuously; Adjacent described inclined-plane group has identical angle, perhaps, described inclined-plane group is during along the profile direction of described light conductor, the angle of each described inclined-plane group is reduced gradually by port to the center of described light conductor and/or described reflecting plate, described inclined-plane group is during along the square section direction of described light conductor, the angle of each described inclined-plane group is by reducing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor, and the straight line that is parallel to each described inclined-plane also is parallel to the axle of described light conductor.
20. light source according to claim 19, it is characterized in that: each described inclined-plane group is contour, perhaps, described inclined-plane group is during along the profile direction of described light conductor, the height of each described inclined-plane group is increased gradually by port to the center of described light conductor and/or described reflecting plate, described inclined-plane group is during along the square section direction of described light conductor, and the height of each described inclined-plane group is by increasing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor.
21. light source according to claim 17 is characterized in that: the side near described reflector element in described reflecting surface and/or the described light conductor comprises at least two cambered surfaces, and each described cambered surface is arranged continuously; Adjacent described cambered surface has identical arc length and radian, perhaps, each described cambered surface is during along the profile direction of described light conductor, radian with each described cambered surface of identical arc length is increased gradually by port to the center of described light conductor and/or described reflecting plate, arc length with each described cambered surface of identical radian measure is reduced gradually by port to the center of described light conductor and/or described reflecting plate, each described cambered surface is during along the square section direction of described light conductor, and the radian of each described cambered surface with identical arc length is by increasing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor; The arc length of each described cambered surface with identical radian measure is by reducing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor, and the straight line that is parallel to each described cambered surface central shaft also is parallel to the axle of described light conductor.
22. light source according to claim 17 is characterized in that: the side near described reflector element in described reflecting surface and/or the described light conductor comprises at least two rectangular cross sections, and each described rectangular cross section is arranged continuously; Distance equates between adjacent described rectangular cross section, and perhaps, each described rectangular cross section is during along the profile direction of described light conductor, and distance is reduced gradually by port to the center of described light conductor and/or described reflecting plate between adjacent described rectangular cross section; Each described rectangular cross section is during along the square section direction of described light conductor, distance is by reducing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor between adjacent described rectangular cross section, and the straight line that is parallel to each described rectangular cross section central shaft also is parallel to the axle of described light conductor.
23. light source according to claim 22, it is characterized in that: each described rectangular cross section is contour, perhaps, each described rectangular cross section is during along the profile direction of described light conductor, and the height of each described rectangular cross section is increased by port to the center of described light conductor and/or described reflecting plate; Each described rectangular cross section is during along the square section direction of described light conductor, and the height of each described rectangular cross section is by increasing gradually near the side of described reflector element and/or both sides to the center of described reflecting surface in the described light conductor.
24. light source according to claim 17 is characterized in that: the side near described reflector element in described reflecting surface and/or the described light conductor is the plane, and the angle between described plane and light emission face is less than 90 degree.
25. light source according to claim 16 is characterized in that: described reflector element covers the end face and the bottom surface of described light conductor.
26. according to each described light source in the claim 16 to 25, it is characterized in that: described light source also comprises astigmatic material, described astigmatic material is between described reflector element and described light conductor, the part light that transmits in described light conductor arrives described reflector element through described astigmatic material, is penetrated away from the side of described reflector element in by described light conductor behind described astigmatic material after the reflection of described reflector element again.
27. light source according to claim 16 is characterized in that: described luminophor is light emitting diode or cold-cathode fluorescence lamp.
28. light source according to claim 16 is characterized in that: described light conductor is a kind of in glass, optical fiber or the acrylic.
29. light source according to claim 16 is characterized in that: adhere in the port of described light conductor or be formed with astigmatic material, the light that described luminophor sends is injected described light conductor via described astigmatic material.
CN2009202469155U 2009-11-12 2009-11-12 Touch screen, touch system and light source Expired - Fee Related CN201927010U (en)

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