CN104391611B - Infrared touch device and its touch detection unit with high anti-light performance - Google Patents
Infrared touch device and its touch detection unit with high anti-light performance Download PDFInfo
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- CN104391611B CN104391611B CN201410528713.5A CN201410528713A CN104391611B CN 104391611 B CN104391611 B CN 104391611B CN 201410528713 A CN201410528713 A CN 201410528713A CN 104391611 B CN104391611 B CN 104391611B
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- infrared
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- remote receiver
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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
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04109—FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
- Position Input By Displaying (AREA)
Abstract
A kind of infrared touch device with high anti-light performance, including：Touch-screen, first group of multiple infrared transmitter, first group of multiple infrared remote receiver and the first infrared fileter.Touch-screen has relative first edge and second edge.First group of multiple infrared transmitter is arranged on the first edge of touch-screen.First group of multiple infrared remote receiver is arranged on the second edge of touch-screen.First group of multiple infrared remote receiver and first group of multiple infrared transmitter are corresponded, to receive the infrared ray that corresponding first group of infrared transmitter is sent.First infrared fileter is arranged at the light entrance of second edge.Tunnel structure is formed between the first infrared fileter and first group of infrared remote receiver, the tunnel structure is configured to weaken the intensity of the ambient light through first group of multiple infrared remote receiver of the first infrared fileter and arrival.
Description
Technical field
The present invention relates to infrared touch field, infrared touch device and its touch detection particularly with high anti-light performance
Unit.
Background technology
The principle of infrared touch be by emission lamp transmitting infrared ray to receive lamp, formation one by infrared ray cloth into light
Net, when there is object to stop the infrared ray transmitter and receiver in somewhere into infrared light net, controller just can know that where is carried out
Touch.At present, infrared touch product filters out unwanted light using infrared fileter mostly, the environmental requirement to using
Compare high, it is impossible to have too strong light irradiation, otherwise influence the using effect of product or can not directly use.
But can not but be limited as touch apparatus and use scope, used from interior to the open air under outdoor high strength sunlight
Use, as product, it must adapt to.Therefore, the light resistance for improving infrared equipment is the unremitting pursuit of those skilled in the art.
The content of the invention
In view of this, the technical problems to be solved by the invention are to provide a kind of infrared touch for having and improving anti-light performance
Equipment.
Another technical problem to be solved by this invention is to provide a kind of infrared touch device for having and improving anti-light performance
Touch detection unit.
The invention provides a kind of infrared touch device with high anti-light performance, including：Touch-screen, the touch-screen tool
There is relative first edge and second edge；First group of multiple infrared transmitter, is arranged on the first edge of the touch-screen；The
One group of multiple infrared remote receiver, is arranged on the second edge of the touch-screen, first group of multiple infrared remote receiver with it is described
First group of multiple infrared transmitter is corresponded, to receive the infrared ray that corresponding first group of infrared transmitter is sent；And
At first infrared fileter, the light entrance for being arranged in the second edge.First infrared fileter with it is described
Tunnel structure is formed between first group of infrared remote receiver, the tunnel structure is configured to weaken through first infrared absorption filter
Mating plate and reach first group of multiple infrared remote receiver ambient light intensity.
In one embodiment, the infrared touch device includes the frame set along the second edge, described first group
Infrared remote receiver is installed on circuit boards, the circuit board be fixed on it is on the frame and parallel with the touch-screen, described the
One group of infrared remote receiver is arranged on one end of the remote touch-screen on the circuit board.
In one embodiment, the infrared touch device includes the frame set along the second edge, described first group
Infrared remote receiver is installed on circuit boards, and the circuit board is fixed on the frame and vertical with the touch-screen.
In one embodiment, first infrared fileter is obliquely installed.
In one embodiment, the angle of inclination of first infrared fileter is between 45 to 60 spend.
In one embodiment, the infrared touch device includes the frame set along the second edge, described first group
Infrared remote receiver is installed on circuit boards, and the circuit board is fixed on the frame, and the frame includes facing described first
Inner side frame portion, the outside frame portion away from first group of infrared transmitter and the connection inner side frame portion of group infrared transmitter
With the frame front connecting portion of outside frame portion, the inner side frame portion from frame front connecting portion along away from described first group it is red
Outer receiver simultaneously tilts extension towards the direction of the touch-screen, and first infrared fileter is located in the inner side frame portion.
In one embodiment, the distance of first group of infrared remote receiver and the light entrance is not less than 11 millimeters.
In one embodiment, the infrared touch device includes the frame set along the second edge, the tunnel knot
Structure is formed by the structure of the frame or the structure by the frame is collectively forming with the touch-screen.
In one embodiment, the touch-screen has relative the 3rd edge and the 4th edge, the 3rd edge and
Four edges are different from the first edge and second edge.The infrared touch device also includes：Second group of multiple infrared emission
Device, is arranged on the 3rd edge of the touch-screen；Second group of multiple infrared remote receiver, is arranged on the 4th side of the touch-screen
Edge, second group of multiple infrared remote receiver are corresponded with described second group multiple infrared transmitters, corresponding to receive
The infrared ray that second group of infrared transmitter is sent；And second infrared fileter, it is arranged in the light at the 4th edge
Porch.Wherein, tunnel structure, the tunnel are formed between second infrared fileter and second group of infrared remote receiver
Road structure is configured to reduce through second infrared fileter and reach the ring of second group of multiple infrared remote receiver
The intensity of environmental light.
Present invention also offers a kind of touch detection unit of the infrared touch device with high anti-light performance, including：Phase
To the first group of multiple infrared transmitter and first group of multiple infrared remote receiver of setting, first group of multiple infrared remote receiver with
First group of multiple infrared transmitter are corresponded, to receive the infrared ray that corresponding first group of infrared transmitter is sent；
First infrared fileter, is arranged in the ultrared light path that first group of infrared transmitter is sent and close to described first group
Infrared remote receiver；The second group of multiple infrared transmitter and second group of multiple infrared remote receiver being oppositely arranged, it is described more than second group
Individual infrared remote receiver is corresponded with described second group multiple infrared transmitters, to receive corresponding second group of infrared transmitter
The infrared ray sent；Second infrared fileter, is arranged in the ultrared light path that second group of infrared transmitter is sent simultaneously
Close to second group of infrared remote receiver.At least in one of first infrared fileter and the second infrared fileter and its
Form tunnel structure between corresponding first group or second group of infrared remote receiver, the tunnel structure be configured to weaken through
The intensity of the ambient light of that infrared fileter corresponding with the tunnel structure.
In summary, in above-mentioned infrared touch device and its touch detection unit, infrared remote receiver with it is corresponding infrared
Tunnel structure is formed between optical filter, by multiple reflections of the tunnel structure to ambient light, weakens ambient light to not influenceing
The degree of infrared receiver, so as to improve the light resistance of infrared touch device.
Brief description of the drawings
Fig. 1 is the principle schematic of infrared touch device.
Fig. 2 is the sectional view of one embodiment of infrared touch device.
Fig. 3 is the structural representation of the touch detection unit of Fig. 2 infrared touch device.
Fig. 4 is the sectional view of another embodiment of infrared touch device.
Fig. 5 is the structural representation of the touch detection unit of Fig. 4 infrared touch device.
Embodiment
In order that technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only made
For example use, it is not intended to limit the present invention.
It is the principle schematic of infrared touch device with reference to Fig. 1.Infrared touch device includes touch detection unit, surrounds
Touch-screen 10 is set, and is arranged on the relative edge of touch-screen 10.In an illustrated embodiment, touch-screen 10 is rectangular
Shape, with relative first edge 12 and second edge 14, and the 3rd relative edge 16 and the 4th edge 18.Touch detection
Unit includes first group of multiple infrared transmitter 20 and first group of multiple infrared remote receiver 22, wherein first group of multiple infrared emission
Device 20 is arranged on the first edge 12 of touch-screen 10, and first group of multiple infrared remote receiver 22 is arranged on the second side of touch-screen 10
Edge 14.First group of multiple infrared remote receiver 22 is corresponded with first group of multiple infrared transmitter 20, to receive corresponding
The infrared ray that one group of infrared transmitter 20 is sent.
Equally, touch detection unit also includes second group of multiple infrared transmitter 24 and second group of multiple infrared remote receiver
26, wherein second group of multiple infrared transmitter 24 is arranged on the 3rd edge 16 of touch-screen 10, and second group of multiple infrared receiver
Device 26 is arranged on the 4th edge 18 of touch-screen 10.Second group of multiple infrared remote receiver 26 and first group of multiple infrared transmitter 24
Correspond, to receive the infrared ray that corresponding second group of infrared transmitter 24 is sent.
The infrared ray of the infrared transmitter transmitting of difference group intersects, and is orthogonal setting in this embodiment.If certain
Touch event occurs (such as at the stain in Fig. 1 touch-screens) for place, then the infrared ray of correspondence position can not be received, therefore can be with
The position for occurring touch event is determined according to the reception condition of infrared remote receiver.
Infrared remote receiver receive just to infrared transmitter transmitting infrared ray when, also simultaneously can receive ambient light.One
As can in the ultrared light path that infrared transmitter is sent and close to infrared remote receiver position set infrared fileter, with filter
Except ambient light.But in the case where ambient light is very strong, component environment light is still had through infrared fileter and arrival pair
The infrared remote receiver answered.This ambient light for partially passing through infrared fileter needs to be weakened, and otherwise can influence infrared receiver.
Fig. 2 and Fig. 3 are the schematic diagrames of one embodiment of infrared touch device.
Infrared touch device includes the frame 28 set along the second edge 14 of touch-screen 10.Frame 28 is provided with light entrance
29, this light entrance 29 is located in ultrared light path.First infrared fileter 30 is set at light entrance 29, to filter out ring
Environmental light.
Frame 28 includes inner side frame portion 32 in face of first group of infrared transmitter 20, away from first group of infrared transmitter 20
The frame front connecting portion 36 of outside frame portion 34 and connection inner side frame portion 32 and outside frame portion 34.Inner side frame portion 32 from frame just
Face connecting portion 36 tilts extension along away from first group of infrared remote receiver 22 and towards the direction of touch-screen 10.First infrared fileter
30 are located in inner side frame portion 32, therefore are also inclined to set.Scope is spent in the angle of inclination of first infrared fileter 30 45 to 60
Interior, in the present embodiment, its angle of inclination is 59 degree.
First group of infrared remote receiver 22 is arranged on circuit board 38, and circuit board 38 is fixed on frame 28.In shown reality
Apply in example, circuit board 38 is to be arranged on using the installed part 40 of a separation on frame 28.On the whole, this installed part 40 can
It is considered as a part for frame 28.In other embodiments, circuit board 38 can also be directly installed on frame 28, without setting
Put the installed part 40 of above-mentioned separation.
In an illustrated embodiment, circuit board 38 is parallel with touch-screen 10.First group of infrared remote receiver 22 is arranged on circuit
One end of remote touch-screen 10 on plate 38.
Tunnel structure 42 is formed between the first infrared fileter 30 and first group of infrared remote receiver 22.The structure of tunnel structure 42
Cause to reduce the intensity of the ambient light through first group of multiple infrared remote receiver 22 of the first infrared fileter 30 and arrival.
Ambient light is passed through after the first infrared fileter 30, the multiple reflections in tunnel structure 42, is gradually reduced the intensity of ambient light, is made
It, which is attenuated to, does not influence the degree of infrared receiver.Because first group of infrared remote receiver 22 is arranged on the remote touch on circuit board 38
One end of screen 10, and the inner side frame portion 32 of frame 28 tilts extension along the direction away from first group of infrared remote receiver 22, so
Design can increase the length of above-mentioned tunnel structure 42, and then increase the order of reflection of ambient light, weaken environment to a greater degree
The intensity of light.The distance between first group of infrared remote receiver 22 and light entrance 29 are not less than 11 millimeters.In the present embodiment,
The distance between first group of infrared remote receiver 22 and light entrance 29 are 14.3 millimeters.
In this embodiment, tunnel structure 42 is formed by the structure of frame 28.Specifically, it is by the portion of inner side frame portion 32
The part border structure of separation structure, the part-structure of installed part 40 and clamping touch-screen 10 is collectively forming.Therefore, frame 28
Above-mentioned position can form the various structures for being conducive to increase light to reflect.Further, suction can also be set on these positions
Photo structure or material, further weaken ambient light.
Fig. 4 and Fig. 5 are another embodiments of infrared touch device.
Below mainly for it is foregoing be that embodiment difference is described.Circuit board 138 is installed using installed part 140
On frame 28, and circuit board 138 is vertical with touch-screen 10.The position of circuit board 138 is close proximity to outside frame portion 34.Inner side frame portion
32 tilt extension from frame front connecting portion 36 along away from first group of infrared remote receiver 22 and towards the direction of touch-screen 10.First
Infrared fileter 130 is located in inner side frame portion 32, therefore is also inclined to set.In the present embodiment, its angle of inclination is 55 degree.
Tunnel structure 142 is formed between the first infrared fileter 130 and first group of infrared remote receiver 22.Tunnel structure
142 are configured to reduction through the ambient light of first group of multiple infrared remote receiver 22 of the first infrared fileter 130 and arrival
Intensity.Ambient light is passed through after the first infrared fileter 130, and the multiple reflections in tunnel structure 142 gradually reduce ambient light
Intensity, being attenuated to it does not influence the degree of infrared receiver.
Because the position of circuit board 38 is close proximity to outside frame portion 34, and frame 28 inner side frame portion 32 along away from first group
The direction of infrared remote receiver 22 tilts extension, and so design can increase the length of above-mentioned tunnel structure 42, and then increase environment
The order of reflection of light, weakens the intensity of ambient light to a greater degree.In the present embodiment, first group of infrared remote receiver 22 and light
The distance between line entrance 129 is 14.3 millimeters.
In this embodiment, tunnel structure 42 is collectively forming by the structure of frame 28 and touch-screen 10.Specifically, its by
The part surface of the part-structure of inner side frame portion 32, the part-structure of the first optical filter 130 and touch-screen 10 is collectively forming.For
This, the above-mentioned position of frame 28 and touch-screen 10 can form the various structures for being conducive to increase light to reflect.Equally, these portions
Extinction structure or material can also be set on position, further weaken ambient light.
In the present embodiment, the end of inner side frame portion 32 forms and turned over along the direction reflexed away from first group of infrared transmitter 20
Folding part 33, the end of the first optical filter 130 forms folding portion 131 along the direction reflexed away from first group of infrared transmitter 20.This
A little folding portions 33,131 are all the structures to form above-mentioned tunnel structure 142.
Above-mentioned is the optical filter and tunnel for being illustrated by taking first group of infrared transmitter and receiver as an example touch detection unit
The construction of structure.It should be appreciated that can also be set in the same fashion for second group of infrared transmitter and receiver
Similar optical filter and tunnel structure, i.e., set the second infrared fileter, second in the light entrance positioned at the 4th edge 18
Tunnel structure is formed between infrared fileter and second group of infrared remote receiver 26, the tunnel structure is configured to reduction through the
The intensity of the ambient light of second group of multiple infrared remote receiver 26 of two infrared fileters and arrival.Certainly, it is infrared for second group
Transmitter and receiver can also different modes optical filter is set, can set or be not provided with tunnel structure.
In the side of first group of infrared transmitter 20 and second group of infrared transmitter 24, theoretically without anti-light design
's.But from the point of view of product appearance, this side of transmitter can also set same or similar border structure to form unification
Outward appearance.In this specification embodiment shown in the drawings, this side of transmitter is provided with identical border structure.
In summary, in the infrared touch device and its touch detection unit of above-mentioned introduction, infrared remote receiver with it is corresponding
Infrared fileter between form tunnel structure, by multiple reflections of the tunnel structure to ambient light, weaken ambient light extremely
The degree of infrared receiver is not influenceed, so as to improve the light resistance of infrared touch device.
The foregoing is only embodiments of the invention, be not intended to limit the invention, it is all the present invention spirit and
Any modifications, equivalent substitutions and improvements made within principle etc., should be included in the scope of the protection.
Claims (5)
1. a kind of infrared touch device with high anti-light performance, including：Touch-screen, the touch-screen has the first relative side
Edge and second edge；First group of multiple infrared transmitter, is arranged on the first edge of the touch-screen；First group multiple infrared to connect
Device is received, the second edge of the touch-screen is arranged on, first group of multiple infrared remote receiver and described first group multiple infrared
Transmitter is corresponded, to receive the infrared ray that corresponding first group of infrared transmitter is sent；And first infrared fileter,
At the light entrance for being arranged in the second edge；It is characterized in that：In first infrared fileter and described first
Tunnel structure is formed between group infrared remote receiver, the tunnel structure is configured to weaken through first infrared fileter
And reach the intensity of the ambient light of first group of multiple infrared remote receiver；The infrared ray of the infrared transmitter transmitting of difference group
Intersect, first infrared fileter is obliquely installed, the angle of inclination of first infrared fileter is in 55 to 60 degree
Between, the infrared touch device includes the frame set along the second edge, and first group of infrared remote receiver is arranged on electricity
On the plate of road, the circuit board is fixed on the frame, and the frame is included in face of the inner side of first group of infrared transmitter
The frame of frame portion, the outside frame portion away from first group of infrared transmitter and the connection inner side frame portion and outside frame portion is just
Face connecting portion, the inner side frame portion is from frame front connecting portion along away from first group of infrared remote receiver and towards described
The direction of touch-screen tilts extension, and first infrared fileter is located in the inner side frame portion, and the touch-screen has relative
The 3rd edge and the 4th edge, the 3rd edge and the 4th edge be different from the first edge and second edge, described
Infrared touch device also includes：Second group of multiple infrared transmitter, is arranged on the 3rd edge of the touch-screen；Second group multiple
Infrared remote receiver, is arranged on the 4th edge of the touch-screen, second group of multiple infrared remote receiver are with described more than second group
Individual infrared transmitter is corresponded, to receive the infrared ray that corresponding second group of infrared transmitter is sent；And second is infrared
At optical filter, the light entrance for being arranged in the 4th edge；Wherein, in second infrared fileter and described second
Tunnel structure is formed between group infrared remote receiver, the tunnel structure is configured to reduction through second infrared fileter
And reach the intensity of the ambient light of second group of multiple infrared remote receiver.
2. there is the infrared touch device of high anti-light performance as claimed in claim 1, it is characterised in that the infrared touch is set
The standby frame for including setting along the second edge, first group of infrared remote receiver is installed on circuit boards, the circuit board
Be fixed on it is on the frame and parallel with the touch-screen, first group of infrared remote receiver be arranged on the circuit board on it is remote
From one end of the touch-screen.
3. there is the infrared touch device of high anti-light performance as claimed in claim 1, it is characterised in that the infrared touch is set
The standby frame for including setting along the second edge, first group of infrared remote receiver is installed on circuit boards, the circuit board
It is fixed on the frame and vertical with the touch-screen.
4. there is the infrared touch device of high anti-light performance as claimed in claim 1, it is characterised in that described first group infrared
The distance of receiver and the light entrance is not less than 11 millimeters.
5. there is the infrared touch device of high anti-light performance as claimed in claim 1, it is characterised in that the infrared touch is set
The standby frame for including setting along the second edge, the tunnel structure is formed by the structure of the frame or by the frame
Structure is collectively forming with the touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528713.5A CN104391611B (en) | 2014-10-09 | 2014-10-09 | Infrared touch device and its touch detection unit with high anti-light performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528713.5A CN104391611B (en) | 2014-10-09 | 2014-10-09 | Infrared touch device and its touch detection unit with high anti-light performance |
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| Publication Number | Publication Date |
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| CN104391611A CN104391611A (en) | 2015-03-04 |
| CN104391611B true CN104391611B (en) | 2017-09-29 |
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| CN201410528713.5A Active CN104391611B (en) | 2014-10-09 | 2014-10-09 | Infrared touch device and its touch detection unit with high anti-light performance |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105404434B (en) * | 2015-12-30 | 2023-05-02 | 深圳市艾博德科技股份有限公司 | Surface reflection type infrared touch screen |
| KR20240012622A (en) | 2016-12-07 | 2024-01-29 | 플라트프로그 라보라토리즈 에이비 | An improved touch device |
| US10963104B2 (en) | 2017-02-06 | 2021-03-30 | Flatfrog Laboratories Ab | Optical coupling in touch-sensing systems |
| EP4036697A1 (en) | 2017-03-28 | 2022-08-03 | FlatFrog Laboratories AB | Optical touch sensing apparatus |
| US11256371B2 (en) | 2017-09-01 | 2022-02-22 | Flatfrog Laboratories Ab | Optical component |
| US11567610B2 (en) | 2018-03-05 | 2023-01-31 | Flatfrog Laboratories Ab | Detection line broadening |
| US11943563B2 (en) | 2019-01-25 | 2024-03-26 | FlatFrog Laboratories, AB | Videoconferencing terminal and method of operating the same |
| CN110007291B (en) * | 2019-04-16 | 2021-07-02 | 深圳市速腾聚创科技有限公司 | Receiving system and laser radar |
| US20220221955A1 (en) * | 2019-05-17 | 2022-07-14 | Flatfrog Laboratories Ab | Improved touch sensing apparatus |
| CN210222731U (en) * | 2019-07-26 | 2020-03-31 | 深圳市鸿合创新信息技术有限责任公司 | Infrared touch display screen |
| CN210605673U (en) * | 2019-11-29 | 2020-05-22 | 广州视源电子科技股份有限公司 | Touch frame and touch screen comprising same |
| KR20220131982A (en) | 2020-02-10 | 2022-09-29 | 플라트프로그 라보라토리즈 에이비 | Enhanced touch-sensing device |
| CN111651098B (en) * | 2020-06-02 | 2023-03-10 | 深圳市鸿合创新信息技术有限责任公司 | Infrared touch device and section bar |
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| CN104391611A (en) | 2015-03-04 |
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