CN202041937U

CN202041937U - Novel optical touch screen

Info

Publication number: CN202041937U
Application number: CN201120080785XU
Authority: CN
Inventors: 程功哲; 刘辉武; 胡隽鹏
Original assignee: Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shirui Electronics Co Ltd
Priority date: 2011-03-24
Filing date: 2011-03-24
Publication date: 2011-11-16
Anticipated expiration: 2021-03-24

Abstract

The utility model discloses a novel optical touch screen. The novel optical touch screen comprises a frame, an optical sensor, a light source, a return reflecting strip, a touch panel and a regulation panel, wherein the touch panel is encircled by the frame, the return reflecting strip is arranged at the edge of the touch panel, the optical sensor and the light source are fixed on the regulation panel, the regulation panel is fixed on the left upper corner and the right upper corner of the frame in the manner of matching a spring with a screw. Compared with the prior art, the novel optical touch screen has the following benefits: as the regulation panel is fixed on the frame by the spring, the relative position relation between the regulation panel and the frame can be regulated by means of the stretchable action of the spring; in addition, as the optical sensor and the light source are fixed on the regulation panel, the photosensitive angle of the optical sensor can be regulated along with the position change of the regulation panel. As the photosensitive angle can be regulated, the novel optical touch screen has higher sensitivity and detection precision in comparison with a common optical touch screen.

Description

A kind of novel optical touch-screen

Technical field

The utility model relates to a kind of touch-screen, relates in particular to a kind of novel optical touch-screen.

Background technology

Along with Development of Multimedia Technology, the touch-screen that is used to realize man-machine interaction obtains application more and more widely.The touching technique of current domestic main flow is when based on infrared, surface acoustic wave and resistance screen, but these several technology also all exist flaw, and clicking as the sound wave screen needs dynamics, resistance screen unstable properties or the like.In recent years, the appearance of optical touch screen has solved the difficult problem of numerous touch-screens substantially, and its reaction velocity is fast, and is highly sensitive, and required touching intensity is little.Fig. 1 is the structural representation of existing a kind of novel optical touch-screen, described novel optical touch-screen comprises framework 101, optical sensor 102, light source 103, retroreflecting bar 104 and touch panel 105, described framework 101 is a rectangular frame, is connected in sequence by first edge 1011, second edge 1012, the 3rd edge 1013 and the 4th edge 1014.When striking takes place in touch objects 106 on touch panel 105, will stop the light 107 that light source 103 is sent, on retroreflecting bar 104, produce shade 108, optical sensor 102 is analyzed the position that shade 108 just can calculate touch objects 106 places.Ideally, touch panel 105 is levels, and light source 103 sends the light that is parallel to touch panel 105, and described light is received by optical sensor 102 by 104 parallel, the former road backspaces of retroreflecting bar.But in the reality, because the structure of described touch panel 105 exists distortion, tolerance, and there is angle difference in optical sensor itself, and some position feedback signal is strong, a little less than some position feedback signal, makes sensitivity of touch screen not high, and accuracy of detection is low.

The utility model content

The utility model embodiment technical matters to be solved is, a kind of sensitivity, novel optical touch-screen that accuracy of detection is high are provided.

In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of novel optical touch-screen, comprise framework, optical sensor, light source, retroreflecting bar and touch panel, described touch panel is surrounded by described framework, described retroreflecting bar is arranged on the edge of described touch panel, wherein, also comprise the regulation and control plate, described optical sensor and light source are fixed on the described regulation and control plate, and described regulation and control plate cooperates the mode of screw to be fixed on the upper left corner and the upper right corner of described framework by spring.

Further, an end of described spring is fixed on the described framework, and the free end of described spring cooperates the screw on the described regulation and control plate that described regulation and control plate is fixed on the described framework.

Further, described spring has three, and the position is separately positioned on leg-of-mutton three summits.

Novel optical touch-screen of the present utility model compared with prior art, have following beneficial effect: because the regulation and control plate is fixed on the described framework by spring, described regulation and control plate can be by the telescopic action adjustment self of spring and the relative position relation between the framework; Because described optical sensor and light source are fixed on the described regulation and control plate, therefore the angle of described optical sensor sensitization obtains adjusting along with the shift in position of regulation and control plate again.Because the sensitization adjustable angle, novel optical touch-screen of the present utility model has higher sensitivity and accuracy of detection than common optical touch screen.

Description of drawings

In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is an embodiment 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 existing optical touch screen;

Fig. 2 is an example structure synoptic diagram of this novel optical touch-screen;

Fig. 3 is the mounting structure synoptic diagram of the regulation and control plate of the described novel optical touch-screen of Fig. 2.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is embodiment of the 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.

The utility model embodiment provides a kind of novel optical touch-screen, below in conjunction with Fig. 2 to Fig. 3 the embodiment of this novel optical touch-screen is described.

Fig. 2 is the first example structure synoptic diagram of the utility model novel optical touch-screen.As shown in Figure 2, the structure of the novel optical touch-screen 1 of present embodiment comprises:

Framework 11(framework 11 is not shown in Fig. 2, please in conjunction with reference to figure 3), optical sensor 12, light source 13, retroreflecting bar 14, touch panel 15 and regulation and control plate 16(regulation and control plate 16 be not shown in Fig. 2, please in conjunction with reference to figure 3).Described touch panel 15 is surrounded by described framework 11, and described retroreflecting bar 14 is arranged on the edge of described touch panel 15.Described optical sensor 12 and light source 13 are fixed on the described regulation and control plate 16, and described regulation and control plate 16 cooperates the mode of screw 161 to be fixed on the upper left corner and the upper right corner of described framework 11 by spring 17.

Concrete, the mounting structure of described regulation and control plate 16 sees also Fig. 3.Described spring 17 has three, and the position is separately positioned on leg-of-mutton three summit A, B, the C.One end of described three springs is fixed on the described framework 11, and the free end of described three springs cooperates the screw 161 on the described regulation and control plate 16 that described regulation and control plate 16 is fixed on the described framework 11.

During use, utilize the wave test software of PC that the light ray energy that feeds back is detected earlier, according to the waveform situation of detected energy regulation and control plate travel direction is regulated, concrete control method is as follows:

1, when having detected signal, weak or the no signal of other arbitrary limit signal, illustrate that optical sensor 12 existence tilt, the tightness of the screw at scalable A or C place, to regulate the left and right sides sensitization angle of optical sensor 12, suitably regulate the tightness of the screw at B place again, make detected signal waveform reach the highest.

2, when detecting less than signal, illustrate in optical sensor 12 existence to have a down dip that the tightness of the screw at scalable B place is to regulate the sensitization angle up and down of optical sensor 12, suitably regulate the tightness of the screw at A or C place again, make detected signal waveform reach the highest.

Above disclosed only is the utility model preferred embodiment, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims

1. novel optical touch-screen, comprise framework, optical sensor, light source, retroreflecting bar and touch panel, described touch panel is surrounded by described framework, described retroreflecting bar is arranged on the edge of described touch panel, it is characterized in that, also comprise the regulation and control plate, described optical sensor and light source are fixed on the described regulation and control plate, and described regulation and control plate cooperates the mode of screw to be fixed on the upper left corner and the upper right corner of described framework by spring.

2. novel optical touch-screen according to claim 1 is characterized in that: an end of described spring is fixed on the described framework, and the free end of described spring cooperates the screw on the described regulation and control plate that described regulation and control plate is fixed on the described framework.

3. novel optical touch-screen according to claim 2 is characterized in that: described spring has three, and the position is separately positioned on leg-of-mutton three summits.