CN201548939U

CN201548939U - Retro-reflection strip and optical touch screen adopting the same

Info

Publication number: CN201548939U
Application number: CN200920277524XU
Authority: CN
Inventors: 邹振中; 叶新林; 刘建军; 刘新斌
Original assignee: Beijing Irtouch Systems Co Ltd; Beijing Unitop New Technology Co Ltd
Current assignee: Beijing Irtouch Systems Co Ltd; Beijing Unitop New Technology Co Ltd
Priority date: 2009-12-11
Filing date: 2009-12-11
Publication date: 2010-08-11
Anticipated expiration: 2019-12-11

Abstract

The utility model discloses a retro-reflection strip and an optical touch screen adopting the same. The retro-reflection strip comprises a first surface, a second surface and a retro-reflection surface, wherein the first and the second surfaces are arranged on the two sides of the retro-reflection surface, the first surface and the retro-reflection surface are intercrossed and not on the same plane, and the second surface and the retro-reflection surface are intercrossed and not on the same plane. The optical touch screen adopts the retro-reflection strip. The cross section of the retro-reflection strip is U-shaped or Z-shaped, which can prevent the retro-reflection surface from being contaminated by water or other liquid and dust.

Description

A kind of retroreflecting bar and optical touch screen

Technical field

The utility model relates to regression reflecting material technology field and human-computer interaction technique field, particularly a kind of retroreflecting bar and a kind of optical touch screen.

Background technology

Development along with multimedia information technology; people use human-computer interaction devices such as touch-screen more and more; optical touch screen is as the big class of one in the touch-screen; be widely used in the every field in production and the life, and the retroreflecting bar is one of critical component in the optical touch screen, as shown in Figure 1; structural representation for a kind of retroreflecting bar of the prior art; described retroreflecting bar comprises: filter layer 101, retroreflecting layer 102 is pasted protective seam 103.As shown in Figure 2, cross sectional representation for retroreflecting bar shown in Figure 1, there is following shortcoming at least in retroreflecting bar shown in Figure 1: because described retroreflecting bar is that cutting is got off from the bigger retroreflecting material of a monoblock area, its edge is easy to into liquid and dust such as water, cause pollution to retroreflecting layer 102, to such an extent as to make its function that loses retroreflecting, influence the operate as normal of whole touch screen.

The utility model content

The utility model provides a kind of retroreflecting bar, described retroreflecting bar comprises first surface, second surface and retroreflecting face, described first surface and described second surface are divided into the both sides of described retroreflecting face, described first surface and described retroreflecting face intersect and not at grade, and described second surface and described retroreflecting face are crossing and not at grade.

The xsect of described retroreflecting bar is a U type structure.

The xsect of described retroreflecting bar is a Z type structure.

Described retroreflecting bar comprises filter layer, retroreflecting layer, pastes protective seam.

The utility model also provides a kind of optical touch screen, comprise optical sensor, framework, retroreflecting bar and processing unit, described retroreflecting bar comprises first surface, second surface and retroreflecting face, described first surface and described second surface are divided into the both sides of described retroreflecting face, described first surface and described retroreflecting face intersect and not at grade, and described second surface and described retroreflecting face are crossing and not at grade.

The xsect of described retroreflecting bar is a U type structure.

The xsect of described retroreflecting bar is a Z type structure.

The inwall of described framework is provided with draw-in groove, is used for described retroreflecting bar is fixed on described framework.

On the same plane of described retroreflecting face and described inwall place.

Others of the present utility model and/or advantage part are in the following description described, and wherein part is conspicuous in this explanation, perhaps can be by learning in the practice of the present invention.

Description of drawings

In order to be illustrated more clearly in the technical scheme of the utility model or prior art, to do to introduce simply to the accompanying drawing of required use in the utility model or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of the of the prior art a kind of retroreflecting bar in the utility model;

Fig. 2 is the cross sectional representation of retroreflecting bar shown in Figure 1;

Fig. 3 is the perspective view of a kind of retroreflecting bar in the utility model;

Fig. 4 is the cross sectional representation of retroreflecting bar shown in Figure 3;

Fig. 5 is for being the xsect simplified schematic diagram of a kind of embodiment of the retroreflecting bar of U type structure according to xsect of the present utility model;

Fig. 6 is for being the xsect simplified schematic diagram of another kind of embodiment of the retroreflecting bar of U type structure according to xsect of the present utility model;

Fig. 7 is for being the xsect simplified schematic diagram of a kind of embodiment of the retroreflecting bar of Z type structure according to xsect of the present utility model;

Fig. 8 is for being the xsect simplified schematic diagram of another kind of embodiment of the retroreflecting bar of Z type structure according to xsect of the present utility model;

Fig. 9 is the structural representation of a kind of optical touch screen in the utility model;

Figure 10 is the diagrammatic cross-section in A-A cross section in the optical touch screen shown in Figure 9;

Figure 11 is the structural representation of a kind of embodiment of draw-in groove when being the retroreflecting bar of U type structure of the xsect shown in Fig. 5 for retroreflecting bar when being installed in framework on; And

Figure 12 is the structural representation of a kind of embodiment of the draw-in groove of the xsect shown in Fig. 8 when being the retroreflecting bar of Z type structure for retroreflecting bar when being installed in framework on.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme in the utility model is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

As shown in Figure 3, perspective view for a kind of retroreflecting bar in the utility model, simultaneously with reference to Fig. 4, cross sectional representation for retroreflecting bar shown in Figure 3, this retroreflecting bar comprises first surface 301, second surface 302 and retroreflecting face 303, first surface 301 and second surface 302 are divided into the both sides of retroreflecting face 303, first surface 301 intersects with retroreflecting face 303 and not at grade, second surface 302 intersects with retroreflecting face 303 and not at grade, promptly the xsect of this retroreflecting bar is U type structure or Z type structure.Wherein, retroreflecting face 303 is the useful effect face that this retroreflecting bar is realized the retroreflecting function.This retroreflecting bar can be by filter layer 101, retroreflecting layer 102 and stickup protective seam 103 compound making, and retroreflecting layer 102 is between filter layer 101 and stickup protective seam 103.At the retroreflecting bar shown in Fig. 3 and Fig. 4 is that xsect is a kind of embodiment of U type structure.Simultaneously, first surface 301 can be curved surface with second surface 302, can also be made into as Fig. 5, embodiment shown in Figure 6 so xsect is the retroreflecting bar of U type structure.With reference to Fig. 7, Fig. 8, the embodiment when being Z type structure for the xsect of this retroreflecting bar.This retroreflecting bar is because of its this xsect is the unique design of U type structure or Z type structure, makes pollutants such as liquid in the environment, dust be difficult to be penetrated in the retroreflecting face 303 in this retroreflecting bar it is polluted.This retroreflecting bar is simple in structure, is easy to processing.In actual applications, can select the concrete shape of retroreflecting bar on the concrete equipment that it was applied to, the while processes on this equipment and the corresponding draw-in groove of this retroreflecting bar structure, this retroreflecting bar is directly installed in the draw-in groove get final product.

As shown in Figure 9, structural representation for a kind of optical touch screen in the utility model, simultaneously with reference to Figure 10, diagrammatic cross-section for A-A cross section in the optical touch screen shown in Figure 9, this optical touch screen comprises optical sensor 901, framework 902, retroreflecting bar 903, light source 904, touch panel 905 and processing unit are (same as the prior art, not shown), unlike the prior art, this retroreflecting bar 903 is the retroreflecting bar shown in one of Fig. 3 to Fig. 8, this retroreflecting bar 903 comprises first surface 301, second surface 302 and retroreflecting face 303, first surface 301 and second surface 302 are divided into the both sides of retroreflecting face 303, first surface 301 intersects with retroreflecting face 303 and not at grade, second surface 302 intersects with retroreflecting face 303 and not at grade, promptly the xsect of this retroreflecting bar 903 is U type structure or Z type structure.Wherein, retroreflecting face 303 is the useful effect face that this retroreflecting bar 903 is realized the retroreflecting function.Retroreflecting bar 903 can be by filter layer 101, retroreflecting layer 102 and stickup protective seam 103 compound making, and retroreflecting layer 102 is between filter layer 101 and stickup protective seam 103.Optical sensor 901 can be camera, photodiode or phototriode etc., and optical sensor 901 is installed in the corner and/or the leg of frame of framework 902; Retroreflecting bar 903 is installed on the framework 902, and the light retroreflecting that is used for light source is sent is near the optical sensor the light source, to be received by optical sensor; Light source 904 can be infrared light supply or LASER Light Source etc., light source 904 be installed in optical sensor 901 near; Touch panel 905 is installed in the centre of framework 902; Processing unit is installed in the inside of the leg of frame of framework 902.Though retroreflecting bar 903 can otherwise be installed on the framework 902, in Figure 10, be illustrated as fixing on framework 902 by the draw-in groove 1002 on the inwall 1001 that is arranged at framework 902.The most a kind of preferred, on the retroreflecting face 303 of retroreflecting bar 903 and the same plane, inwall 1001 places of framework 902.In Figure 10, two angle α of draw-in groove 1002 and β can be arbitrarily greater than the angles of 0 degree less than 180 degree, and preferably 75 degree are to 85 degree.Simultaneously can be with reference to Figure 11 and Figure 12, Figure 11 is a kind of embodiment of the draw-in groove 1002 when being the retroreflecting bar of U type structure of the xsect shown in Fig. 5 for the retroreflecting bar when being installed in framework 902 on 903; Figure 12 is a kind of embodiment of the draw-in groove 1002 of the xsect shown in Fig. 8 when being the retroreflecting bar of Z type structure for the retroreflecting bar 903 when being installed in framework 902 on.The xsect that is used for fixing other is that the draw-in groove shape of the retroreflecting bar of Z type structure or U type structure no longer is described specifically.This optical touch screen is owing to the xsect of having used the antifouling property excellence is the retroreflecting bar 903 of U type structure or Z type structure, and performance is improved.

It will be appreciated by those skilled in the art that accompanying drawing is the synoptic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the utility model is necessary.

More than disclosed only be several specific embodiment of the present utility model; but; the utility model is not limited thereto, as the structural plane that on the first surface of this retroreflecting bar and ground, is extended with other, this optical touch screen by alternate manner with this retroreflecting bar be fixed in that the first-class any those skilled in the art of framework can think variation all should fall into protection domain of the present utility model.

Claims

1. retroreflecting bar, it is characterized in that: described retroreflecting bar comprises first surface, second surface and retroreflecting face, described first surface and described second surface are divided into the both sides of described retroreflecting face, described first surface and described retroreflecting face intersect and not at grade, and described second surface and described retroreflecting face are crossing and not at grade.

2. retroreflecting bar as claimed in claim 1 is characterized in that: the xsect of described retroreflecting bar is a U type structure.

3. retroreflecting bar as claimed in claim 1 is characterized in that: the xsect of described retroreflecting bar is a Z type structure.

4. as the described retroreflecting bar of one of claim 1 to 3, it is characterized in that: described retroreflecting bar comprises filter layer, retroreflecting layer, pastes protective seam.

5. optical touch screen, comprise optical sensor, framework, retroreflecting bar and processing unit, it is characterized in that: described retroreflecting bar comprises first surface, second surface and retroreflecting face, described first surface and described second surface are divided into the both sides of described retroreflecting face, described first surface and described retroreflecting face intersect and not at grade, and described second surface and described retroreflecting face are crossing and not at grade.

6. optical touch screen as claimed in claim 5 is characterized in that: the xsect of described retroreflecting bar is a U type structure.

7. optical touch screen as claimed in claim 5 is characterized in that: the xsect of described retroreflecting bar is a Z type structure.

8. as the described optical touch screen of one of claim 5 to 7, it is characterized in that: the inwall of described framework is provided with draw-in groove, is used for described retroreflecting bar is fixed on described framework.

9. optical touch screen as claimed in claim 8 is characterized in that: on the same plane of described retroreflecting face and described inwall place.

10. as the described optical touch screen of one of claim 5 to 7, it is characterized in that: described retroreflecting bar comprises filter layer, retroreflecting layer, pastes protective seam.