CN202049463U - Optical touch module - Google Patents
Optical touch module Download PDFInfo
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- CN202049463U CN202049463U CN2011200641873U CN201120064187U CN202049463U CN 202049463 U CN202049463 U CN 202049463U CN 2011200641873 U CN2011200641873 U CN 2011200641873U CN 201120064187 U CN201120064187 U CN 201120064187U CN 202049463 U CN202049463 U CN 202049463U
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- China
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- touch module
- leaded light
- optical touch
- light bar
- optical
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Abstract
The utility model provides an optical touch module, comprising an optical sensor (12), at least one light guide strip (11), at least one lamp source (13) and at least one lamp cover (15). Each light guide strip is a long shaft-shaped structure, and comprises a light incoming surface and a light emitting surface; the lamp sources are arranged on the sides of the light incoming surfaces, and project the emitted invisible light into the light guide strips. The lamp covers are covered on the sides of the light guide strips different from the light emitting surfaces. The optical sensor is located on one of the end portions in the long shaft direction of the light guide strip, and fixed and connected with the lamp cover. The light guide strips can lead the light to be emitted from the light emitting surfaces, and the optical sensor can shoot the image of the light-proof object in real-time so that the optical touch module comprises a modularized structure and can be conveniently assembled in a display.
Description
Technical field
The utility model is about a kind of optical touch module, particularly about a kind of optical touch module that is applied to display.
Background technology
In recent years, because the manufacturing cost of flat-panel screens significantly reduces, so flat-panel screens becomes family's TV and the computing machine main flow with screen gradually.In addition, because flat-panel screens is used cathode-ray tube (CRT) (Cathode Ray Tube more traditionally, CRT) TV is light more, thin, therefore, at the train station, public place such as hospital, convenience store or cinema, can find increasing flat-panel screens, this flat-panel screens not only can be used for show message, the purpose that also can be used for advertisement, coml is used and can be said so more and more widely.
Requirement on function becomes more diverse to electronic equipment or flat-panel screens along with people, and what its relevant science and technology research and development, manufacturing technology were also followed makes rapid progress.For example, the demand of Touch Screen (Touch Screen) can allow people's handled easily computing machine, mobile phone, sound equipment, refrigerator or other electronic equipment; Push the mode of controlling by its screen display and screen, people just can give up complicated keyboard, button operation, see through the clear pattern that indicates of screen and the interface of hommization, reach the purpose that shows with touch control operation.
Large touch screen (generally speaking being large scale greater than 10.1 inches) replaces traditional resistance-type and condenser type with optical profile type gradually at present.And the required assembly of the touch-control module of optical profile type is more, is difficult for reaching the requirement of slimming; And if will overcome " contact point overlapping " or " dead detecting angle " problem of multi-point touch with " triangulation location " commonly used, then need to rely on the microcontroller or the computing chip of a plurality of optical sensors (can be video camera, camera) and higher level, could calculate touch point accurately, avoid judging by accident the touch point that people push; So required cost is higher.
Summary of the invention
The utility model fundamental purpose is solving the shortcoming that the traditional optical touch-control module is difficult for slimming.
Another purpose of the utility model is under the preceding topic that can overcome multi-point touch it " contact point overlapping " or " dead detecting angle " problem, and mode at lower cost reaches the purpose of optical touch.
In order to reach above-mentioned purpose, the utility model provides a kind of optical touch module, and this optical touch module includes an optical sensor, at least one leaded light bar, at least one lamp source and at least one lampshade.The leaded light bar is major axis shape structure, and the definition have a long axis direction, leaded light bar to comprise an incidence surface and an exiting surface, incidence surface is positioned at the long axis direction end of leaded light bar, exiting surface is positioned at the long axis direction side of leaded light bar.The lamp source is arranged at the incidence surface side, and the invisible light that penetrates is projected in the leaded light bar.Lampshade is coated on the side that the leaded light bar is different from exiting surface, in order to reflect the light of this invisible light.Optical sensor is positioned at a wherein end of leaded light bar long axis direction, and sets firmly with lampshade and to join.Bootable many light of leaded light bar penetrate from this exiting surface, and the light definition of many ejaculations has a smooth projection surface, and optical sensor is the light tight object of pickup light projection surface periphery in real time.By this, this optical touch module has modular construction, and ease of assembly is in this display.
Aforesaid optical touch module, the wherein contiguous lamp of optical sensor source.
Aforesaid optical touch module, wherein the optical touch module also comprises a glass, and one of them corner of glass has cut a rescinded angle, and rescinded angle is adjacent and corresponding with optical sensor.
Aforesaid optical touch module, wherein lampshade grips this leaded light bar by wringing fit.
Aforesaid optical touch module, wherein the number of leaded light bar, lamp source and lampshade is two, two leaded light bars, two lampshades, two lamp sources are positioned at the different both sides of this optical sensor respectively, and two leaded light bars are vertical each other, and two lampshades are also vertical each other.
Aforesaid optical touch module, wherein the leaded light bar is close in the lamp source.
By this, optical touch module of the present utility model can overcome the shortcoming that is difficult for slimming, can also avoid " contact point overlapping " or " dead detecting angle " problem of multi-point touch, and reaches the purpose of optical touch originally with lower one-tenth.
Description of drawings
Fig. 1 is the optical touch module schematic perspective view of the utility model first embodiment.
Fig. 2 is the optical touch module schematic top plan view of the utility model second embodiment.
Fig. 3 is the optical touch module schematic perspective view of the utility model second embodiment.
Fig. 4 is the optical touch module schematic top plan view of the utility model the 3rd embodiment.
Fig. 5 is the optical touch module schematic top plan view of the utility model the 4th embodiment.
Fig. 6 is that optical touch module application of the present utility model is in the structural representation of display.
Fig. 7 is the optics sensing synoptic diagram of optical touch module of the present utility model.
Fig. 8 is the optics sensing stereographic map of optical touch module of the present utility model.
Identifier declaration:
10,20,30,40: the optical touch module
11: the leaded light bar
11A: incidence surface
11B: exiting surface
12: optical sensor
13: the lamp source
14: fixed head
15: lampshade
16: glass
161: rescinded angle
8: display
81: preceding frame
82: backlight module
91: long axis direction
92: light
H1, H2, H3: finger
P1, P2, P3: touch point.
Embodiment
See also Fig. 1, Figure 1 shows that the optical touch module stereographic map of the utility model first embodiment.As shown in Figure 1, optical touch module 10 can be installed setting and is applied on the display (this figure does not illustrate).Optical touch module 10 comprises a leaded light bar 11, lamp source 13, a lampshade 15 and an optical sensor 12.
Wherein, leaded light bar 11 is major axis shape structure, and defines a long axis direction 91.Leaded light bar 11 comprises an incidence surface 11A and an exiting surface 11B, and incidence surface 11A is positioned at the end of the long axis direction 91 of leaded light bar 11, and exiting surface 11B is positioned at the side of the long axis direction 91 of this leaded light bar 11.Lamp source 13 can be light emitting diode (Light Emitting Diode, LED), in order to launch the invisible light of infrared ray (Infrared) frequency range.Lamp source 13 places incidence surface 11A side, and the invisible light that penetrates is projected to leaded light bar 11 inside.Lampshade 15 is coated on other three sides that leaded light bar 11 is different from this exiting surface 11B, and the purpose of lampshade 15 is to reflect the light (not illustrating) of invisible light, makes the invisible light that leaves leaded light bar 11 sides reenter leaded light bar 11 inside again.This set of leaded light bar 11 and lampshade 15 can penetrate in order to the exiting surface 11B that guides many light self-conductance striations 11.
See also Fig. 2 and Fig. 3, Figure 2 shows that the optical touch module vertical view of the utility model second embodiment, Figure 3 shows that the optical touch module stereographic map of the utility model second embodiment.As Figure 22 and shown in Figure 3, optical touch module 20 also includes a glass 16, and one of them corner of glass 16 has cut a rescinded angle 161, and rescinded angle 161 is adjacent and corresponding with optical sensor 12.
Also have in the present embodiment, the number of leaded light bar 11, lamp source 13 and lampshade 15 is two, and two leaded light bars 11 lay respectively at the different both sides of optical sensor 12, two lampshades 15 also lay respectively at the different both sides of optical sensor 12, and two lamp sources 13 also lay respectively at the different both sides of optical sensor 12.That is to say,, be provided with a lamp source 13, a lampshade 15 and a leaded light bar 11 respectively in the both sides of optical sensor 12.Therefore, corresponding lamp source 13, lampshade 15 and leaded light bar 11 can be in order to penetrating invisible light, reflection ray, and then the light self-conductance striation 11 of this invisible light is penetrated.
By this, when the optical touch module 20 that comprises glass 16 and display (this figure does not illustrate) when combining, the rescinded angle 161 of glass 16 can abut with the profile of lampshade 15 mutually along optical sensor 12, fixed head 14, can not occupy additional space.In addition, in the present embodiment, two leaded light bars 11 are vertical each other, and two lampshades 15 are also vertical each other.Also have, lampshade 15 grips leaded light bar 11 by wringing fit (or claiming interference fit), and leaded light bar 11 gets final product tight clamping with lampshade 15, can not get loose, rock.
This case also has other embodiment, sees also Fig. 4, Figure 4 shows that the optical touch module vertical view of the utility model the 3rd embodiment, repeats no more with the similar structure of other synoptic diagram.As shown in Figure 4, optical touch module 30 only has a lamp source 13, a leaded light bar 11 and a lampshade 15.Wherein, this leaded light bar 11 is close in lamp source 13, therefore the periphery in lamp source 13 is all coated by lampshade 15, lamp source 13 can directly be projected to the light of invisible light this leaded light bar 11 inside, perhaps see through this lampshade 15 light is reflexed to leaded light bar 11 inside, in order to reduce the luminous energy loss that dissipation is left, improve utilization ratio of optical energy.
See also Fig. 5, Figure 5 shows that the optical touch module vertical view of the utility model the 4th embodiment.As shown in Figure 5, this optical touch module 40 is similar with the embodiment of Fig. 4, and its difference is, optical touch module 40 respectively is provided with a lampshade 15, a lamp source 13 and a leaded light bar 11 respectively in the different both sides of optical sensor 12.Can reach aforesaid effect by this.
Figure 6 shows that optical touch module application of the present utility model is in the structural representation of display.As shown in Figure 6, the optical touch module 20 of Fig. 2 embodiment is arranged on the backlight module 82, frame 81 before adding can be finished the assembling of display 8.Wherein, the leaded light bar 11 of optical touch module 20 is used to guide the ejaculation of light 92 self-conductance striations 11, and light 92 definition of the invisible light that penetrates have a smooth projection surface (not label).Optical sensor 12 can be video camera, camera, complementary metal oxide layer semiconductor (Complementary Metal Oxide Semiconductor, CMOS) or Charged Coupled Device (Charge Coupled Device, CCD), therefore can take the light tight object of this light projection surface periphery in real time.In addition, the glass 16 of optical touch module 20 has a rescinded angle 161, and when therefore being installed on the display 8, the rescinded angle of glass 16 can abut with the profile of lampshade 15 mutually along optical sensor 12, fixed head 14, saves the space, so have the effect of slimming.
Please consult Fig. 7 and Fig. 8 more simultaneously, Figure 7 shows that the optics sensing synoptic diagram of optical touch module of the present utility model, Figure 8 shows that the optics sensing stereographic map of optical touch module of the present utility model.As shown in Figure 7 and Figure 8, the optical touch module 20 of Fig. 2 embodiment is installed in the upper left corner of display 8, and the optical touch module 10 of Fig. 1 embodiment is installed in its lower right corner.So, the corner part of frame 81 inside before two optical sensors 12 can be arranged at is in order to the light tight object of real-time pickup light projection surface periphery.
Generally speaking, common by people's finger H1, H2, the target that H3 reaches touch-control, therefore, as Fig. 7 and shown in Figure 8, finger H1, H2, H3 that the light tight object of present embodiment is behaved, the finger position that H1, H2, H3 pushed is respectively touch point P1, P2, P3.The utility model is by the mode of optics sensing, detecting people's finger H1, H2, the position of H3, and then obtain this touch point P1, the change in displacement of P2, P3, velocity variations, and in order to the software or the hardware of control operation electronic equipment (for example computing machine).Utilize optical sensor 12 to take this light projection surface in real time; Because it is light tight that people's finger H1, H2, H3 have, can block light, make 12 detectings of optics sense side device obtain the real-time coordinate of touch point P1, P2, P3, and can further obtain translational speed and the acceleration of touch point P1, P2, P3 by simple infinitesimal analysis computing.Moreover, because the emitted light 92 of a plurality of leaded light bar 11 is orthogonal, so, all can be detected no matter finger H1, H2, H3 move on to any position on the display 8.
Generally speaking, touch point too much causes easily usually and detects inaccurate, coordinate erroneous judgement.As shown in Figure 7 and Figure 8,, therefore, erroneous judgement may be arranged, maybe touch point P1, P2 can't be offered a clear explanation if only depend on the optical sensor 12 of top side because the touch point P1 of finger H1 has identical horizontal ordinate with the touch point P2 of finger H2.So present embodiment is promptly by second, even the 3rd leaded light bar 11 come compensating error, eliminates erroneous judgement or probability that can't identification, improves precision, and make the coordinate of interpretation more accurate.That is to say, can in display 8, install a plurality of optical touch modules are set, make a plurality of leaded light bars 11 penetrate invisible light, make a plurality of touch points of a plurality of optical sensor 12 detectings simultaneously, overcome " contact point overlapping " or " dead detecting angle " problem of multi-point touch, so have higher precision, lower erroneous judgement probability, very convenient.In addition, detecting principle of the present utility model does not adopt traditional triangulation calculation method, therefore need not to use the microcontroller or the computing chip of supercomputing, so can effectively save cost.
Certainly, in other embodiments, this display can be looked the consideration of demand or manufacturing cost, and selects the arbitrary optical touch module among Fig. 1 to Fig. 8 embodiment to arrange in pairs or groups mutually, make up, and makes optical touch module of the present utility model have more elasticity on using.
By this, optical touch module of the present utility model can solve the shortcoming that is difficult for slimming, can also overcome " contact point overlapping " or " dead detecting angle " problem of multi-point touch, and reaches the purpose of optical touch originally with lower one-tenth.
Though the utility model discloses as above with specific embodiment; right its disclosed specific embodiment is not in order to limit the utility model; anyly be familiar with this skill person; in the spirit and scope that do not break away from the utility model; when doing various changes and retouching; its change done and retouching all belong to the category of the utility model, and the protection domain of the utility model is as the criterion when looking the claim scope person of defining.
Claims (10)
1. optical touch module is characterized in that it comprises:
At least one leaded light bar (11), described leaded light bar (11) is major axis shape structure, and definition has a long axis direction (91), each described leaded light bar (11) comprises an incidence surface (11A) and an exiting surface (11B), described incidence surface (11A) is positioned at the end of the long axis direction (91) of described leaded light bar (11), and described exiting surface (11B) is positioned at the side of the long axis direction (91) of described leaded light bar (11);
At least one lamp source (13), described lamp source (13) places the side of described incidence surface (11A), and the invisible light that penetrates is projected in the described leaded light bar (11);
At least one lampshade (15), described lampshade (15) is coated on the side that described leaded light bar (11) is different from described exiting surface (11B), to reflect the light of this invisible light;
One optical sensor (12), this optical sensor (12) are positioned at a wherein end of described leaded light bar (11) long axis direction, and set firmly with described lampshade (15) and to join;
Wherein, bootable many light of this leaded light bar (11) penetrate from this exiting surface (11B), and the light definition of many ejaculations has a smooth projection surface, and this optical sensor (12) can be taken the light tight object of this light projection surface periphery in real time.
2. optical touch module as claimed in claim 1, the wherein contiguous described lamp source (13) of this optical sensor (12).
3. optical touch module as claimed in claim 1, wherein this optical touch module also comprises a glass (16), and one of them corner of this glass has cut a rescinded angle (161), and this rescinded angle (161) is adjacent and corresponding with this optical sensor (12).
4. optical touch module as claimed in claim 1, wherein said lampshade (15) grips described leaded light bar (11) by wringing fit.
5. optical touch module as claimed in claim 1, the number of wherein said leaded light bar (11), described lamp source (13) and described lampshade (15) is two.
6. optical touch module as claimed in claim 5, wherein two described leaded light bars (11) lay respectively at the different both sides of this optical sensor (12).
7. optical touch module as claimed in claim 6, wherein two described leaded light bars (11) are vertical each other.
8. optical touch module as claimed in claim 6, wherein two described lampshades (15) lay respectively at the different both sides of this optical sensor (12).
9. optical touch module as claimed in claim 5, wherein two described lamp sources (13) lay respectively at the different both sides of this optical sensor (12).
10. optical touch module as claimed in claim 1, described leaded light bar (11) is close in wherein said lamp source (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200641873U CN202049463U (en) | 2011-03-11 | 2011-03-11 | Optical touch module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200641873U CN202049463U (en) | 2011-03-11 | 2011-03-11 | Optical touch module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202049463U true CN202049463U (en) | 2011-11-23 |
Family
ID=44989764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200641873U Expired - Fee Related CN202049463U (en) | 2011-03-11 | 2011-03-11 | Optical touch module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202049463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376951A (en) * | 2012-04-20 | 2013-10-30 | 原相科技股份有限公司 | Optical touch device |
-
2011
- 2011-03-11 CN CN2011200641873U patent/CN202049463U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376951A (en) * | 2012-04-20 | 2013-10-30 | 原相科技股份有限公司 | Optical touch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20120311 |