CN201233592Y - Reflective light path construction used for infrared touch screen - Google Patents
Reflective light path construction used for infrared touch screen Download PDFInfo
- Publication number
- CN201233592Y CN201233592Y CNU2008201096567U CN200820109656U CN201233592Y CN 201233592 Y CN201233592 Y CN 201233592Y CN U2008201096567 U CNU2008201096567 U CN U2008201096567U CN 200820109656 U CN200820109656 U CN 200820109656U CN 201233592 Y CN201233592 Y CN 201233592Y
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- infrared
- infrared transmitting
- tube
- light path
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- 238000010276 construction Methods 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a reflection optical structure of an infrared touch screen, which comprises an infrared transmitting pipe, an infrared receiving pipe and reflecting mirrors, wherein, the infrared transmitting pipe and the infrared receiving pipe are welded on the circuit boards surrounding two adjacent sides of the display screen; the infrared transmitting pipe and the infrared receiving pipe are provided with a plurality of array elements which comprise a plurality of infrared transmitting tubes and infrared receiving tubes; the infrared rays transmitted by the infrared transmitting tubes are reflected by the reflecting mirrors, and then received by the infrared receiving tubes which are in the same array element as the infrared transmitting tubes; and the reflecting mirrors which are in the long and narrow strip shape and are respectively mounted on the other two adjacent edges of the display screen which are opposite to the circuit boards. The novel infrared touch screen with the reflection configuration has the advantages that the volume of the circuit boards is reduced, the manufacturing technique is simplified, and the cost is saved.
Description
Technical field
The utility model relates to a kind of photoelectric detection technology field, refers to be applicable to the infrared touch panel series products of using photoelectric detecting technology especially.
Background technology
The light channel structure of the photodetector system of typical infrared touch panel is in the framed structure of display front portion, and four limits have arranged that infrared emission receives pipe one to one.Infrared touch panel is when work, and infrared emission and receiving tube are lighted successively, and under the situation of no touch, each bar Infrared is smooth.When the touch objects contact screen, touch objects stops the infrared ray of the level and the vertical direction of relevant position, and single-chip microcomputer is judged the position and sent coordinate to main frame.Because circuit board, infrared transmitting tube and the receiving tube of existing infrared touch panel all are installed in the place ahead of the display surface of display, for infrared transmitting tube and receiving tube will be face-to-face to guarantee that light path is unimpeded, therefore all need horizontal installation, be to be welded on the circuit board after the pipe leg of pipe will bend 90 degree, therefore to take the no small area of circuit board, make that width of circuit board is difficult to reduce, more and more be difficult to adapt to more and more narrow display frame.Simultaneously, although used surface mounted component in a large number, the thickness of touch-screen is still bigger, has influenced the attractive in appearance of display that touch-screen is installed.Simultaneously, therefore existing touch-screen is not easy to make real integrated touch display because the circuit board that touches is independently.
The utility model content
In view of the foregoing, the utility model provides a kind of reflected light path structure that is used for infrared touch panel, it is by infrared transmitting tube, infrared receiving tube and catoptron constitute, described infrared transmitting tube and infrared receiving tube are welded on the circuit board that is located in the adjacent both sides of display screen, described infrared transmitting tube and receiving tube include several array elements, described array element includes several infrared transmitting tubes and infrared receiving tube, the infrared ray that described infrared transmitting tube is launched after described mirror reflects by with the same array element in described infrared transmitting tube place in infrared receiving tube receive, described catoptron is long and narrow bar shaped, and it is relative with described circuit board that described catoptron is installed on respectively, on two other adjacent side of display screen.
Further, the infrared transmitting tube and the receiving tube quantity that include of described each array element is all identical.
Further, described array element includes an infrared transmitting tube and several infrared receiving tubes.
Further, described array element includes an infrared receiving tube and several infrared transmitting tubes.
Further, described catoptron is a plane mirror.
The advantage that new infrared touch-screen with reflected light path structure described in the utility model has:
(1), compares with the existing infrared touch panel that is arranged with the circuit board that is welding infrared transmitting tube and receiving tube all around, adopt the utility model of technique scheme to have only both sides that circuit board is installed, catoptron is installed in both sides in addition, with the infrared reflection of infrared transmitting tube emission to the infrared receiving tube that is adjacent, thereby omitted the quantity of infrared transmitting tube and receiving tube greatly, reduce the volume of circuit board, reduced the cost of infrared touch panel.
(2), infrared transmitting tube and the receiving tube that is welded on the circuit board adopts unique cell array to distribute, each cell array includes an infrared transmitting tube and several are divided into the infrared receiving tube on its both sides, the infrared ray that infrared transmitting tube is launched is through the mirror reflects on its opposite, reflex on the infrared receiving tube in this cell array, reduced requirement like this to catoptron, the common plane catoptron just can be realized, has simplified manufacturing process, thereby has reduced manufacturing cost.
Description of drawings:
Fig. 1 is the utility model top plan view structural representation;
Fig. 2 is the utility model embodiment () structural representation;
Fig. 3 is the utility model embodiment (two) structural representation;
Fig. 4 is the utility model light path principle figure
Embodiment:
With reference to Fig. 1, a kind of reflected light path structure that is used for infrared touch panel of the utility model, it is by infrared transmitting tube 1, infrared receiving tube 2 and plane mirror 3 constitute, infrared transmitting tube 1 is welded on the surface-mounted integrated circuit 5 that is located in display screen 4 adjacent both sides with infrared receiving tube 2, infrared transmitting tube 1 and receiving tube 2 include several array elements 6, array element 6 includes several infrared transmitting tubes 1 and infrared receiving tube 2, the infrared ray that infrared transmitting tube 1 is launched after catoptron 3 reflection by with the same array element 6 in infrared transmitting tube 1 place in infrared receiving tube 2 receive, plane mirror 3 is long and narrow bar shaped, and it is relative with surface-mounted integrated circuit 5 that plane mirror 3 is installed on respectively, on two other adjacent side of display screen 4.
With reference to Fig. 2, Fig. 3, the reflected light path structure that is used for infrared touch panel described in the utility model has two kinds of embodiments in actual applications.Include an infrared transmitting tube 1 and several infrared receiving tubes 2 in each array element 6 of infrared touch panel shown in the embodiment (), include an infrared receiving tube 2 and several infrared transmitting tubes 1 in each array element 6 of the infrared touch panel shown in the embodiment (two).The described infrared touch panel of these two kinds of embodiment reduces the circuit board volume, has simplified manufacturing process, has saved production cost.
With reference to Fig. 4, Fig. 4 is a kind of schematic diagram that is used for the reflected light path structure of infrared touch panel of the utility model, in actual use, energized at first, start infrared touch panel, the infrared transmitting tube 1 that be welded on the surface-mounted integrated circuit 5 this moment will be launched infrared ray, in any array element 6 on surface-mounted integrated circuit 5, the infrared ray 401 of infrared transmitting tube 1 emission in this array element 6 is through plane mirror 3 reflections on opposite, and the infrared ray 402 that is reflected is received by the infrared receiving tube in the same array element 62.All array elements 6 on the surface-mounted integrated circuit 5 all move above-mentioned steps simultaneously, will interweave in touch screen surface with forming the infrared light road network, and the entire display screen zone is constantly scanned.When the user clicks on the touch-screen certain+some with hand, just can block infrared ray through this position, make infrared ray can not receive corresponding tube-launched infrared ray, the control circuit that is used to discern touch location calculates this touch point position, and by data line the position signalling that identifies is transferred to computing machine.The infrared ray 401 usefulness solid arrows of infrared transmitting tube 1 reflection are represented in Fig. 4, are represented by the infrared ray 402 with dashed lines arrows that plane mirror 3 reflects.
The above only is preferred embodiment of the present utility model, and protection domain of the present utility model is not limited thereto.Anyly all belong within the protection domain of the present utility model based on the equivalent transformation on the technical solutions of the utility model.
Claims (5)
1. reflected light path structure that is used for infrared touch panel, it is by infrared transmitting tube, infrared receiving tube and catoptron constitute, described infrared transmitting tube and infrared receiving tube are welded on the circuit board that is located in the adjacent both sides of display screen, it is relative with described circuit board that described catoptron is installed on respectively, on two other adjacent side of display screen, it is characterized in that: described infrared transmitting tube and receiving tube include several array elements, described array element includes several infrared transmitting tubes and infrared receiving tube, the infrared ray that described infrared transmitting tube is launched after described mirror reflects by with the same array element in described infrared transmitting tube place in infrared receiving tube receive, described catoptron is the catoptron of long and narrow bar shaped.
2. the reflected light path structure that is used for infrared touch panel according to claim 1 is characterized in that: infrared transmitting tube and receiving tube quantity that described each array element includes are all identical.
3. the reflected light path structure that is used for infrared touch panel according to claim 1 is characterized in that: described array element includes an infrared transmitting tube and several infrared receiving tubes.
4. the reflected light path structure that is used for infrared touch panel according to claim 1 is characterized in that: described array element includes an infrared receiving tube and several infrared transmitting tubes.
5. the reflected light path structure that is used for infrared touch panel according to claim 1 is characterized in that: described catoptron is a plane mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201096567U CN201233592Y (en) | 2008-08-05 | 2008-08-05 | Reflective light path construction used for infrared touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201096567U CN201233592Y (en) | 2008-08-05 | 2008-08-05 | Reflective light path construction used for infrared touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201233592Y true CN201233592Y (en) | 2009-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201096567U Expired - Lifetime CN201233592Y (en) | 2008-08-05 | 2008-08-05 | Reflective light path construction used for infrared touch screen |
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| CN102043547A (en) * | 2009-10-22 | 2011-05-04 | 乐金显示有限公司 | Display device having optical sensing frame and method for detecting touch using the same |
| CN102087562A (en) * | 2011-02-28 | 2011-06-08 | 鸿富锦精密工业（深圳）有限公司 | Light path structure for infrared touch screen |
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