CN207764771U - Device for generating the infrared light curtain for being parallel to screen - Google Patents
Device for generating the infrared light curtain for being parallel to screen Download PDFInfo
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- CN207764771U CN207764771U CN201721765750.3U CN201721765750U CN207764771U CN 207764771 U CN207764771 U CN 207764771U CN 201721765750 U CN201721765750 U CN 201721765750U CN 207764771 U CN207764771 U CN 207764771U
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Abstract
The utility model is related to generate the device for the infrared light curtain for being parallel to screen comprising：Infra-red laser diode；Adjustable installation part, for implementing the adjusting to infra-red laser diode in each dimension；Platform is reflected, is placed in the exit direction of light beam；First target and the second target are placed between infra-red laser diode and reflection platform, and are both provided with laser beam perforation of the number more than or equal to the number of infra-red laser diode；Infrared camera, it, which is used to detect, whether there is speck on the reflection platform, when there is the speck different from the number of infra-red laser diode, the adjustable installation part implements the adjusting to infra-red laser diode in each dimension, and the number for making the speck formed on reflection platform is identical with the number of infra-red laser diode.The utility model avoids detection process and is depended on unduly to contact identification software, reduces corresponding cost, and the utility model produces a kind of infrared light curtain being parallel to screen at lower cost.
Description
Technical field
The utility model is related to technical field of intelligent interaction, and in particular to a kind of for generating the infrared light for being parallel to screen
The device of curtain.
Background technology
In the screen touch-control man-machine interactive system based on infrared light curtain, existing infrared light curtain is emitted by multiple lasers
Fan-shaped infrared surface be formed by stacking.Since infrared light is black light, so judging the light beam and screen that multiple lasers are sent out
It is whether parallel difficult.Current main method is to act on finger and carry out touch-control on screen, be located at screen front (or
Infrared camera below) can take finger contact image, according to the area of finger contact in image come judge light beam with
Whether screen is parallel, such as：When finger contact area is smaller in finger contact image, judges that light beam is parallel with screen, work as hand
When finger contact area is significantly greater than finger area, illustrate that light beam may be irradiated to the places such as the back of the hand, that is, light beam is uneven with screen
Row.The accuracy rate and consistency of this detection method all need to be further increased.
Utility model content
For the situation that infrared light curtain in the prior art is not easy to be detected whether to be parallel to screen, the application propose by
Multiple infra-red laser diodes transmitting infrared beams being placed on screen form infrared light curtains, and provide a kind of novel be used for
The device for the infrared light curtain for being parallel to screen is generated, described device includes：
At least two infra-red laser diodes, are placed on screen, for emitting infrared beam；
Adjustable installation part, for implementing the adjusting to infra-red laser diode in each dimension；
Platform is reflected, is placed in the exit direction of light beam；
First target and the second target, the first target and the second target are placed in the infra-red laser diode and reflection platform
Between；Laser of the number more than or equal to the number of infra-red laser diode is both provided on first target and the second target
Perforation, the laser beam perforation and reflection platform are arranged so that：What infra-red laser diode was sent out is parallel to the light beam energy of screen
The corresponding laser beam perforation on the laser beam perforation and the second target on the first target is enough sequentially passed through, finally in the reflection platform
Upper formation speck；
Infrared camera is used to detect on the reflection platform with the presence or absence of speck, when presence and two pole of infrared laser
When the different speck of the number of pipe, the adjustable installation part implements the adjusting to infra-red laser diode in each dimension,
Keep the number for finally reflecting the speck formed on platform identical with the number of infra-red laser diode.
In some embodiments, reflection platform is arranged in the exit direction of light beam, is located on screen.
In some embodiments, reflection platform is arranged in the exit direction of light beam, is located at outside screen.
In some embodiments, the line of the laser beam perforation laser beam perforation corresponding on the second target on the first target with
The exit direction for being parallel to the light beam of screen is identical.
In some embodiments, reflection platform includes paper, lath or infrared light backlight.
In some embodiments, the interval between laser beam perforation can be adjusted.
In some embodiments, the first target and the second target are pasted on to the surface of screen with adhesive material, or
First target and the second target are removably fixed to screen.
In some embodiments, the screen is curved surface or plane.
In some embodiments, the distance between the first target and the second target can according to the requirement of depth of parallelism height come
It adjusts.
In some embodiments, the distance of the first target and the second target to infra-red laser diode can be according to the depth of parallelism
The requirement of height is adjusted.
The prior art mentioned by the application introductory song depends on video camera catching to the reflected light at finger contact
It obtains, related software extracts and identify that entire detection process is related to hardware and software to the contact for the image information that video camera captures
And the cooperation of the two, therefore, the influence factor that testing result is subject to is larger.And the proposition of the utility model then preferably solves
On the one hand these problems avoid detection process and are depended on unduly to contact identification software, reduce corresponding cost, and entire
On the other hand detection process simple, intuitive is realized in a manner of a kind of novel low cost and a kind of being parallel to the infrared of screen
Light curtain.
Description of the drawings
Fig. 1 is that device for generating the infrared light curtain that is parallel to screen shows according to the utility model one embodiment
It is intended to.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 is that device for generating the infrared light curtain that is parallel to screen shows according to the utility model one embodiment
It is intended to.
Infra-red laser diode 101,102,103,104..., n are shown, these infra-red laser diodes can be set in Fig. 1
It sets in the top of screen 21 or is arranged as required on other sides, each infra-red laser diode sends out infrared beam, multiple
The light beam that infra-red laser diode is sent out forms light curtain on the screen.It, can be with according to the needs of light curtain thickness evenness etc.
The light beam that multiple infra-red laser diodes are sent out is collimated and focused.The light beam that infra-red laser diode is sent out is set to carry out accurate
Straight and focusing is the common technology of those skilled in the art, and details are not described herein.For clarity, one is only sparsely shown in figure
In actual conditions, according to the needs of touch accuracy, more intensive two pole of infrared laser can be arranged in a little infra-red laser diodes
Pipe.
Include according to the device for generating the infrared light curtain for being parallel to screen of the utility model one embodiment：At least
Two infra-red laser diodes 101,102,103,104..., n, are placed on screen；Adjustable installation part, the adjustable installation
Part can implement the adjusting to infra-red laser diode in each dimension according to actual needs, including can adjust infrared laser
Diode displacement in all directions and angle；Platform 41 is reflected, is placed in the exit direction of light beam；First target, 31 He
Second target 32, the first target and the second target are placed between the infra-red laser diode and reflection platform；First target
Laser beam perforation 311,312 ... of the number more than or equal to the number of infra-red laser diode is both provided on mark and the second target
M and 321,322 ... m ", the laser beam perforation and reflection platform are arranged so that：What infra-red laser diode was sent out is parallel to
The light beam of screen can sequentially pass through the corresponding laser beam perforation on laser beam perforation and the second target on the first target, finally exist
Speck is formed on the reflection platform；Infrared camera 51, is used to detect and whether there is speck on the reflection platform, when depositing
In the same number of speck with infra-red laser diode, it is described to judge that light beam that the infra-red laser diode is sent out is parallel to
Screen；When there is the speck different from the number of infra-red laser diode, the adjustable installation part on infra-red laser diode
The adjustable installation part can be adjusted can implement adjusting to infra-red laser diode in each dimension according to actual needs,
Including infra-red laser diode displacement in all directions and angle can be adjusted, make finally to reflect the speck formed on platform
Number it is identical with the number of infra-red laser diode.
It will elaborate below to more details.
As shown in Figure 1, the first target 31 and the second target 32 are installed on the surface of screen 21, it is provided on the first target 31
Multiple laser beam perforations 311,312 ..., m, be provided on the second target 32 multiple laser beam perforations 321,322 ..., m ", wherein m
With m " it is the number that the integer more than 1, m and m " are greater than or equal to infra-red laser diode, it is multiple sharp on the first target 31
Light perforation 311,312 ..., m and multiple laser beam perforations 321 on the second target 32,322 ..., m " it is corresponding, and the first target
Multiple laser beam perforations 311 on 31,312 ..., m and multiple laser beam perforations 321 on the second target 32,322 ..., m " arrives
The distance of screen 21 is consistent, when the light beam also cross on the first target 31 multiple laser beam perforations 311,312 ..., m and
Corresponding laser beam perforation 321 on second target 32,322 ..., m " when, being formed on the reflection platform 41 can be infrared
The speck that video camera takes.Reflection platform 41 is set on beam exit direction, can be located at the edge of screen 21, Huo Zhewei
Except screen 21.In some embodiments of the utility model, reflection platform 41 can be paper, lath or backlight etc..
First target 31 and the second target 32 can also be pasted on the surface or removably of screen 21 by adhesive material
It is fixed to screen surface, such as：First target 31 and the second target 32 can be installed on 21 surface of screen by glue or double faced adhesive tape.
In the utility model some embodiments, in technique, the first target 31 and the second target 32 can be integrally formed, so as to
Enough make multiple laser beam perforations 311 on the first target 31,312 ..., m and multiple laser beam perforations 321 on the second target 32,
322 ... one-to-one correspondence is better achieved in, m "；Or first target and the second target be mounted on a sliding rail, make them
It can move together or be moved relative to each other along beam direction.It can be according to the requirement of depth of parallelism height, that is, according to right
Infrared light curtain accuracy requirement parallel with screen, come adjust the distance between the first target and the second target and they with
The distance of infra-red laser diode；Spacing between first target and the second target is bigger, and the corresponding reality of judging result is parallel
Degree is also higher, and in the case where spacing is certain, the first target and the second target off screen curtain are remoter, and the corresponding reality of judging result is flat
Row degree is also higher.
In the utility model some embodiments, multiple laser beam perforations 311 on the first target 31,312 ..., m and
Multiple laser beam perforations 321 on two targets 32,322 ..., m " can be poroid, such as：Round hole, polygonal hole or ellipse
Hole etc. can specifically determine according to the cross sectional shape of the laser beam of outgoing, multiple laser beam perforations 311 on the first target 31,
312 ..., corresponding multiple laser beam perforations 321 on m and the second target 32,322 ..., line and the beam exit direction phase of m "
Together, the thickness along beam exit direction is the smaller the better, to save the sky that the first target 31 and the second target 32 occupy on the screen
Between.Multiple laser beam perforations 311 on first target 31,312 ..., corresponding multiple laser are worn on m and the second target 32
Hole 321,322 ..., the number of m " can be more than and/or the number of equal to every group infra-red laser diode mid-infrared laser diode
Mesh, multiple laser beam perforations 311 on the first target 31,312 ..., it is corresponding multiple on the distance between m and the second target 32
Laser beam perforation 321,322 ..., the distance between m " can set in advance, can also be according to two pole of multiple infrared lasers
Pipe 101,102,103 ..., the distance between n is adjusted.For example, in the case where being related to multigroup infra-red laser diode,
Infra-red laser diode between group and group is spaced arrangement, or front and back on laser emitting direction is in two rows of placements, after
The light beam that the infra-red laser diode of row is sent out is emitted from the gap between front-seat infra-red laser diode, and difference group is infrared
The distance between adjacent infra-red laser diode may be different in laser diode, therefore, test previous group infrared laser two
It, can be by adaptively adjusting when testing the light beam that next group of infra-red laser diode is sent out after the light beam that pole pipe is sent out
The distance between multiple laser beam perforations on first target 31 and the second target 32 enable to adapt to next group of two pole of infrared laser
Aforementioned first target and the can be used in the distance between pipe when so that being debugged to different groups of infra-red laser diodes
Two targets improve the flexibility of test, and can save resource.
Infrared camera 51 can reflect the speck formed by black light on platform 41 with captured in real-time, if some is infrared
The light beam that laser diode is sent out forms speck on reflection platform, then illustrates that light beam has passed through the first target 31 and the second target
Laser beam perforation on 32, the light beam which sends out are parallel to screen；On the contrary, if some two pole of infrared laser
The light beam that pipe is sent out does not form speck on reflection platform 41, then illustrates that the light beam that the infra-red laser diode is sent out is not parallel
In screen 21, need that the beam exit direction of the infra-red laser diode is adjusted.To realize the adjusting, infrared laser
Diode can be installed on an adjustable installation part, which can implement to swash to infrared according to actual needs
Adjusting of the optical diode in each dimension, including infra-red laser diode displacement in all directions and angle can be adjusted
Degree；Each corresponding adjustable installation part of infra-red laser diode can be fixed on a common pedestal.It is multigroup when being related to
When infra-red laser diode, every group of infra-red laser diode can be fixed on different pedestals, and one is being adjusted to convenient
After group infra-red laser diode, this group of infra-red laser diode is removed as needed, and move into another group of two pole of infrared laser
Pipe.During belonging to optical path adjusting in view of the adjustable installation part and its regulative mode therefore common device is not done in detail herein
It states.
In some embodiment of the invention, the screen can be the screen of arbitrary material and shape, such as：Liquid crystal,
LED, DLP projection screen etc., the screen can face screen or curve screens directly.When screen is curve screens, Mei Gehong
Outer laser diode is arranged in the top of screen along curved surface, and correspondingly, the first target and the second target, and reflection are flat
Platform is arranged in also along curved surface on screen.The light for being parallel to screen being emitted from infra-red laser diode again passes through the first target
Laser beam perforation on mark and the second target forms speck on reflection platform, no longer superfluous herein described in earlier in respect of figures 1
It states.
The method for generating the infrared light curtain for being parallel to screen that another embodiment of the utility model provides, the side
Method includes：
S11：At least two infra-red laser diodes are placed on screen, for emitting infrared beam；
S12：Reflection platform is set to the exit direction of light beam.
Such as：Reflection platform can be set to beam exit direction, be located on screen, such as positioned at screen edge；Or
Reflection platform can be set on beam exit direction, and except screen.In the utility model some embodiments, reflection
Platform can be paper, backlight or lath etc..
S13：First target and the second target are set between the infra-red laser diode and reflection platform；Described
Laser beam perforation of the number more than or equal to the number of infra-red laser diode is both provided on one target and the second target, it is described to swash
Light is perforated and reflection platform is arranged so that：The light beam that infra-red laser diode was sent out be parallel to screen can sequentially pass through
The corresponding laser beam perforation on laser beam perforation and the second target on one target finally forms speck on the reflection platform.
S14：It is detected with infrared camera and whether there is speck on the reflection platform, when presence and infra-red laser diode
Number different speck when, implement the adjusting to infra-red laser diode in each dimension, make finally to reflect shape on platform
At speck number it is identical with the number of infra-red laser diode.
Component involved by above each steps of S11-S14 and connection relation therein can be done with reference to front around Fig. 1
Description.
For example, can by the first target 31 multiple laser beam perforations 311,312 ..., on m and the second target 32
Multiple laser beam perforations 321,322 ..., the distance of m " to screen 21 be set as consistent, when the light beam is also cross the first target
Multiple laser beam perforations 311 on 31,312 ..., m and corresponding laser beam perforation 321 on the second target 32,322 ..., m "
When, form the speck that can be taken by thermal camera on the reflection platform 41.Reflection platform 41 can be set to
On beam exit direction, herein under the premise of, reflection platform can be for example set to the edge of screen 21, or be set to screen
Except 21.In some embodiments of the utility model, reflection platform 41 can be paper, lath or infrared light backlight etc.,
The presence of the backlight quickly navigates to the region for substantially needing to observe, backlight convenient for human eye when observing thermal camera
Light intensity can be very weak, only provide one observation guide.
First target 31 and the second target 32 can be pasted on to the surface or removably of screen 21 with adhesive material
It is fixed to screen；First target 31 and the second target 32 can be integrally formed, it is multiple on the first target 31 so as to make
Laser beam perforation 311,312 ..., m and multiple laser beam perforations 321 on the second target 32,322 ..., m " is better achieved one by one
It is corresponding.
The respective shapes of each laser beam perforation can be designed according to the cross sectional shape of the laser beam of outgoing, and make first
Multiple laser beam perforations 311 on target 31,312 ..., corresponding multiple laser beam perforations 321 on m and the second target 32,
322 ... the line of, m " is identical as the beam exit direction of screen is parallel to, and the thickness along beam exit direction is the smaller the better,
To save the first target 31 and the second target 32 the space occupied on the screen.It can make multiple sharp on first target 31
Light perforation 311,312 ..., corresponding multiple laser beam perforations 321 on m and the second target 32,322 ..., the number of m " can be big
In and/or equal to every group of infra-red laser diode mid-infrared laser diode number, multiple laser on the first target 31 wear
Hole 311,312 ..., corresponding multiple laser beam perforations 321 on the distance between m and the second target 32,322 ..., between m "
Distance can be set in advance, can also according to multiple infra-red laser diodes 101,102,103 ..., between n away from
From being adjusted.For example, in the case where being related to multigroup infra-red laser diode, infra-red laser diode between group and group that
This is intervally arranged, or it is front and back on laser emitting direction placed in two rows of, the light beam that the infra-red laser diode of heel row is sent out
It is emitted from the gap between front-seat infra-red laser diode, two pole of adjacent infrared laser in difference group infra-red laser diode
The distance between pipe may be different, therefore, test after the light beam that previous group infra-red laser diode is sent out, test next group
It, can be multiple sharp on the first target 31 and the second target 32 by adaptively adjusting when the light beam that infra-red laser diode is sent out
The distance between light perforation, enables to adapt to the distance between next group of infra-red laser diode, so as to different groups
Aforementioned first target and the second target can be used when infra-red laser diode is debugged, improve the flexibility of test, and
Resource can be saved.
Infrared camera 51 can reflect the speck formed by black light on platform 41 with captured in real-time, if some is infrared
The light beam that laser diode is sent out forms speck on reflection platform, then illustrates that light beam has passed through the first target 31 and the second target
Laser beam perforation on 32, the light beam which sends out are parallel to screen；On the contrary, if some two pole of infrared laser
The light beam that pipe is sent out does not form speck on reflection platform 41, then illustrates that the light beam that the infra-red laser diode is sent out is not parallel
In screen 21, need that the outgoing beam of the infra-red laser diode is adjusted.To realize the adjusting, two pole of infrared laser
Pipe can be installed on an adjustable installation part, which can implement according to actual needs to infrared laser two
Adjusting of the pole pipe in each dimension, including infra-red laser diode displacement in all directions and angle can be adjusted；Often
The corresponding adjustable installation part of a infra-red laser diode can be fixed on a common pedestal.It is multigroup infrared sharp when being related to
When optical diode, every group of infra-red laser diode can be fixed on different pedestals, to it is convenient adjusted it is one group infrared
After laser diode, this group of infra-red laser diode is removed as needed, and moves into another group of infra-red laser diode.In view of
During the adjustable installation part and its regulative mode belong to optical path adjusting therefore common device is not detailed herein.
It should be noted that although the present embodiment is used to generate with step S11 to step S14 to provided by the utility model
The method for being parallel to the infrared light curtain of screen is illustrated, but not because above-mentioned steps are to the side provided by the utility model
Method is defined, that is to say, that in some cases, the action recorded in detail in the claims or step can according to different from
Sequence in the present embodiment executes and desired result still may be implemented.In some embodiments, multitasking
It is also possible or it may be advantageous with parallel processing.
The prior art mentioned by the application introductory song depends on video camera catching to the reflected light at finger contact
It obtains, related software extracts and identify that entire detection process is related to hardware and software to the contact for the image information that video camera captures
And the cooperation of the two, therefore, the influence factor that testing result is subject to is larger.And the proposition of the utility model then preferably solves
These problems avoid detection process and are depended on unduly to contact identification software, reduce corresponding cost.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in various
Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this practicality
Novel protection domain should be subject to the protection scope in claims.
Claims (10)
1. the device for generating the infrared light curtain for being parallel to screen, described device include：
At least two infra-red laser diodes, are placed on screen, for emitting infrared beam；
Adjustable installation part, for implementing the adjusting to infra-red laser diode in each dimension；
Platform is reflected, is placed in the exit direction of light beam；
First target and the second target, the first target and the second target be placed in the infra-red laser diode and reflection platform it
Between；The laser that number is both provided on first target and the second target more than or equal to the number of infra-red laser diode is worn
Hole, the laser beam perforation and reflection platform are arranged so that：The light beam that infra-red laser diode was sent out be parallel to screen can
The corresponding laser beam perforation on the laser beam perforation and the second target on the first target is sequentially passed through, finally on the reflection platform
Form speck；
Infrared camera is used to detect on the reflection platform with the presence or absence of speck, when presence and infra-red laser diode
When the different speck of number, the adjustable installation part implements the adjusting to infra-red laser diode in each dimension, makes most
The number of the speck formed on reflection platform eventually is identical with the number of infra-red laser diode.
2. the device according to claim 1 for generating the infrared light curtain for being parallel to screen, which is characterized in that reflection is flat
Platform is arranged in the exit direction of light beam, is located on screen.
3. the device according to claim 1 for generating the infrared light curtain for being parallel to screen, which is characterized in that reflection is flat
Platform is arranged in the exit direction of light beam, is located at outside screen.
4. the device according to claim 1 for generating the infrared light curtain for being parallel to screen, which is characterized in that the first target
The exit direction phase of the line of the laser beam perforation put on laser beam perforation corresponding on the second target and the light beam for being parallel to screen
Together.
5. the device for generating the infrared light curtain for being parallel to screen according to any one of claim 1-4, special
Sign is that reflection platform includes paper, lath or infrared light backlight.
6. the device for generating the infrared light curtain for being parallel to screen according to any one of claim 1-4, special
Sign is that the interval between laser beam perforation can be adjusted.
7. the device for generating the infrared light curtain for being parallel to screen according to any one of claim 1-4, special
Sign is, the first target and the second target are pasted on to surface or the first target and the second target of screen with adhesive material
Mark is removably fixed to screen.
8. the device for generating the infrared light curtain for being parallel to screen according to any one of claim 1-4, special
Sign is that the screen is curved surface or plane.
9. the device for generating the infrared light curtain for being parallel to screen according to any one of claim 1-4, special
Sign is that the distance between the first target and the second target can be adjusted according to the requirement of depth of parallelism height.
10. the device for generating the infrared light curtain for being parallel to screen according to any one of claim 1-4, special
Sign is that the distance of the first target and the second target to infra-red laser diode can be adjusted according to the requirement of depth of parallelism height
Section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721765750.3U CN207764771U (en) | 2017-12-18 | 2017-12-18 | Device for generating the infrared light curtain for being parallel to screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721765750.3U CN207764771U (en) | 2017-12-18 | 2017-12-18 | Device for generating the infrared light curtain for being parallel to screen |
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| Publication Number | Publication Date |
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| CN207764771U true CN207764771U (en) | 2018-08-24 |
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ID=63186851
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| Country | Link |
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2017
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Effective date of registration: 20230227 Address after: 100085 room 02-a177, 2 / F, block B, 22 Xinhe Road, Haidian District, Beijing Patentee after: BEIJING ZEN-AI TECHNOLOGY Co.,Ltd. Address before: 31-37, No.1, Zhenbei Road, Internet Town, Wuzhen Town, Tongxiang City, Jiaxing City, Zhejiang Province, 314501 Patentee before: JIAXING RENGUANG WUZHEN TECHNOLOGY CO.,LTD. |
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