CN108110606A - Regulating part, the device for generating the infrared light curtain parallel to screen - Google Patents
Regulating part, the device for generating the infrared light curtain parallel to screen Download PDFInfo
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- CN108110606A CN108110606A CN201711360952.4A CN201711360952A CN108110606A CN 108110606 A CN108110606 A CN 108110606A CN 201711360952 A CN201711360952 A CN 201711360952A CN 108110606 A CN108110606 A CN 108110606A
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- infra
- screen
- laser diode
- adjusting
- red laser
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0235—Method for mounting laser chips
- H01S5/02355—Fixing laser chips on mounts
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of device the invention discloses regulating part and for generating the infrared light curtain parallel to screen, the regulating part include：Mounting bracket, including mounting portion and support base, mounting portion includes hole of perforating and fasten, it fastens hole and perforation is mutually perpendicular to, and it fastens hole and is connected with perforation, adjusting through hole is provided in support base, fastens and fastener is equipped in hole, for infra-red laser diode to be fixed on along beam exit direction in perforation；Adjustment means are movably connected in and adjust between through hole and mounting base, for adjusting the shooting angle of light beam；Mounting base is provided with adjusting slot, and adjustment means, which are arranged at, to be adjusted between through hole and the adjusting slot.Contact identification software is depended on unduly the invention avoids detection process, reduces corresponding cost, and entire detection process simple, intuitive.
Description
Technical field
The present invention relates to technical field of intelligent interaction, and in particular to one kind is used to adjust infra-red laser diode light beam pitching
The regulating part of angle and the device for generating the infrared light curtain parallel to screen.
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 light beam and screen that multiple lasers are sent
It is whether parallel difficult.Current main method is to act on finger and touch-control is carried out on screen, positioned 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 uniformity of this detection method all need to be further improved.
The content of the invention
For infrared light curtain of the prior art be not easy to be detected whether parallel to screen situation, the application propose by
Multiple infra-red laser diode transmitting infrared beams being placed on screen form infrared light curtain and provide a kind of novel generation
Parallel to the device of the infrared light curtain of screen.
On the one hand, an embodiment of the present invention provides a kind of for adjusting the adjusting of infra-red laser diode light beam pitch angle
Part, the regulating part include：
Mounting bracket, including mounting portion and support base, the mounting portion includes hole of perforating and fasten, the fastening hole and institute
Perforation is stated to be mutually perpendicular to, and the fastening hole is connected with the perforation, and adjusting through hole is provided in the support base, it is described solid
Fastener is equipped in tieholen, for the infra-red laser diode to be fixed on along beam exit direction in the perforation；
Adjustment means are movably connected between the adjusting through hole and mounting base, for adjusting the outgoing of the light beam
Angle；
Mounting base is provided with adjusting slot, and the adjustment means are arranged at the adjusting through hole and described adjust is inserted
Between slot.
Second aspect, an embodiment of the present invention provides a kind of for generating the device of the infrared light curtain parallel to screen, institute
Stating device includes：
At least two infra-red laser diodes, are arranged on screen, for emitting infrared beam；
Adjustable installed 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；
Target is placed between the infra-red laser diode and reflection platform, multiple laser is provided on the target
Perforation, the laser beam perforation and the reflection platform are arranged so that：The light parallel to screen that infra-red laser diode is sent
Beam can sequentially pass through the laser beam perforation on target, finally form speck on the reflection platform；
Detection sensor is used to detect on the reflection platform with the presence or absence of speck, when presence and two pole of infrared laser
During the different speck of the number of pipe, the adjustable installed part implements the adjusting to infra-red laser diode in each dimension,
The number for making the speck formed on finally reflection platform is identical with the number of infra-red laser diode.
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 present invention then preferably solves these
Problem avoids detection process and contact identification software is depended on unduly, reduces corresponding cost, and entire detection process letter
It is single directly perceived.
Description of the drawings
Fig. 1 is the regulating part of adjusting infra-red laser diode outgoing beam pitch angle provided by one embodiment of the present invention
Schematic diagram.
Fig. 2 be another embodiment of the present invention provide for detect infrared light curtain whether parallel to screen detection device
Schematic diagram.
Fig. 3 is the flow for generation parallel to the method for the infrared light curtain of screen that another embodiment of the invention provides
Figure.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It just bows as shown in Figure 1, Fig. 1 is adjusting infra-red laser diode provided by one embodiment of the present invention by outgoing beam
The schematic diagram of the regulating part of elevation angle degree.
Show that the regulating part includes in Fig. 1：Mounting bracket 11, adjustment means 12 and mounting base 13.
Mounting bracket 11 includes mounting portion 111 and support base 112, mounting portion 111 and support base 112 can be one into
The structure of type, mounting portion 111 are located on support base 112, alternatively, mounting portion 111 and support base 112 can also be combinations
Structure together, such as：Mounting portion 111 and support base 112 snap together or are bonded together.
Wherein, mounting portion 111 includes perforation 1111 and fastens hole 1112, and it is mutual to fasten hole 1112 and the direction of perforation 1111
Vertically, and fastening hole 1112 is connected with perforation 1111, such as：Mounting portion 111 be rectangular parallelepiped structure, perforate 1111 one end position
In on one of face A of rectangular parallelepiped structure, the other end of perforation is located on the face B opposite with face A of rectangular parallelepiped structure, also
To reveal hole to have penetrated through two opposite faces of rectangular parallelepiped structure, fasten hole 1112 one end be arranged at it is adjacent simultaneously with face A knead doughs B
Face C on, the other end is arranged at perforation 1111.In some instances, the number for fastening hole 1112 can be 2, fasten
Fastener 1113 is equipped in hole 1112, for infra-red laser diode body to be fixed in perforation 1111, wherein, fastener
1113 can be screw or other fasteners, such as：Bolt or stud etc., the head of screw, which is arranged at, to be fastened outside hole 1112, spiral shell
The screw rod of nail can be equipped with external screw thread, and internal thread can be provided with by fastening in hole 1112, and screw rod, which is arranged at, to be fastened in hole 1112, and
It and can be to 1111 movement of perforation by the screw thread on rotary screw.When lighting infra-red laser diode and it being made to send light beam,
The exit direction of infra-red laser diode along light beam is placed in perforation 1111, it can be by infrared laser by rotary screw
Diode is fixed on mounting portion 111.
It is provided in support base 112 and adjusts through hole 1121, in some instances, the shape of support base 112 can be
Rectangle can be respectively equipped with an adjusting through hole 1121 on four angles of rectangle support base portion.
Adjustment means 12, which are movably connected in, to be adjusted between through hole 1121 and mounting base 13, for adjusting between light beam and screen
Pitch angle.Wherein, the shape of mounting base 13 can be identical with the shape of the support base 112 of mounting base 11, the two it is big
It is small can be identical or different.
In some instances, adjustment means 12 may include fastener 121 and spring 122, and the fastener 121 is, for example, spiral shell
Nail or bolt and stud can reduce the volume of the regulating part using screw, wherein, the head of screw is arranged at
It adjusts in through hole 1121, spring is arranged on screw rod, one end of screw rod is connected with head, and the other end of screw rod is arranged at mounting base
In 13 mounting groove 131；Alternatively, adjustment means 12 may include screw and rubber cushion, rubber cushion is equipped with through hole, and rubber cushion is set in screw rod
On.External screw thread can be provided on screw in adjustment means 12, interior spiral shell can be provided in the mounting groove 131 of mounting base 13
Line.Coordinate the elastic force of elastic component by rotary screw, the infra-red laser diode hair on mounting bracket 11 can be adjusted
Pitch angle between the light beam and screen that go out, it is convenient, flexible.
It, can using the regulating part of adjusting infra-red laser diode outgoing beam pitch angle provided in an embodiment of the present invention
Pitch angle between light beam and screen that neatly adjustment infra-red laser diode easy to adjust is sent.
As shown in Fig. 2, Fig. 2 is another embodiment of the present invention provide for whether detecting infrared light curtain parallel to screen
Detection device schematic diagram.
Infra-red laser diode 101,102,103,104..., n are shown, these infra-red laser diodes can be set in Fig. 2
It puts on screen 21, such as is arranged on the top of screen or the edge of screen, each infra-red laser diode sends infrared beam,
The light beam that multiple infra-red laser diodes are sent forms light curtain on the screen.According to the needs of light curtain thickness evenness etc.,
The light beam that can be sent to multiple infra-red laser diodes is collimated and focused on.Make the light beam that infra-red laser diode is sent into
Row collimation and focusing are the common technologies of those skilled in the art, and details are not described herein.For clarity, only sparsely show in figure
Go out some infra-red laser diodes, in actual conditions, according to the needs of touch accuracy, more intensive infrared laser can be set
Diode.
For detecting whether infrared light curtain includes parallel to the detection device of screen：Platform 41 is reflected, is placed in light beam
In exit direction；Target 31 is placed between the infra-red laser diode and reflection platform, is provided on the target multiple
Laser beam perforation 311,312 ... m, the laser beam perforation and reflection platform are arranged so that：Infra-red laser diode is sent flat
Row can sequentially pass through the laser beam perforation on target in the light beam of screen, finally form speck on the reflection platform；Detection
Sensor 51 is used to detect on the reflection platform with the presence or absence of speck, when in the presence of the number phase with infra-red laser diode
With speck when, judge light beam that the infra-red laser diode is sent parallel to the screen.
It will elaborate below to more details.
As shown in Fig. 2, target 31 is installed on the surface of screen 21, be provided on target 31 multiple laser beam perforations 311,
312nd ..., m, wherein, m is integer more than 1, and m is greater than or equal to the number of infra-red laser diode, multiple on target 31
Laser beam perforation 311,312 ..., the distance of m to screen 21 it is consistent, when the light beam is through multiple laser beam perforations on target 31
311st, 312 ..., during m, the speck that can be detected sensor 51 and detect is formed on the reflection platform 41.
Reflection platform 41 be arranged on beam exit direction, can be located at screen 21 edge or positioned at screen 21 it
Outside.In some embodiments of the invention, it can be paper, lath or backlight etc. to reflect platform 41.
In the present embodiment, target 31 can be pasted on the surface of screen 21 by adhesive material, such as：Target 31 can lead to
Cross the surface that glue or double faced adhesive tape are detachably secured to screen 21 together in 21 surface of screen or by various connectors.At this
Invent in some embodiments, multiple laser beam perforations 311,312 ..., the section of m can be cylindric, polygon-shaped, oval
Shape etc. can specifically be determined according to the cross sectional shape of the laser beam of outgoing.Multiple laser beam perforations 311,312 ..., the axis side of m
To identical with the beam exit direction parallel to screen, multiple laser beam perforations 311,312 ..., thickness of the m along beam exit direction
Degree needs to be more than predetermined threshold value, which can empirically be worth to set, such as：It can be by laser beam perforation along beam exit
The thickness in direction is set greater than 1cm etc., the thickness in laser beam perforation along beam exit direction it is more big can guarantee through light beam
Parallel to screen.The multiple laser beam perforation 311,312 ..., the number of m can be more than and/or equal to every group laser diode
The number of middle laser diode, multiple laser beam perforations 311,312 ..., the distance between m can set in advance, also may be used
With according to multiple laser diodes 101,102,103 ..., the distance between n is adjusted.Such as：For one group of two pole of laser
It, can be according to several laser two of front when the outgoing beam of several laser diodes of front is parallel to screen for pipe
The distance between pole pipe adjusts the distance between laser beam perforation so that the distance between multiple laser beam perforations and this group of laser two
The distance between multiple laser diodes are identical in pole pipe.In another example in the case where being related to multigroup infra-red laser diode, group
Infra-red laser diode between group be spaced arrangement or it is front and rear on laser emitting direction placed in two rows of, heel row
The light beam that sends of infra-red laser diode be emitted from the gap between front-seat infra-red laser diode, difference group laser two
The distance between adjacent laser diode may be different in pole pipe, therefore, test the light sent of previous group laser diode
During the light beam that next group of laser diode of beam and then test is sent, by adaptively adjusting between multiple laser beam perforations
Distance enables to adapt to the distance between next group of laser diode, equal when being debugged so as to different groups of laser diodes
An identical target can be used, improve the flexibility of test, and resource can be saved.
Detection sensor 51 is for detecting the speck formed on reflection platform 41 by black light, in some embodiments,
Detection sensor 51 can be infrared camera, if the light beam that sends of some infra-red laser diode shape on reflection platform 41
Into speck, then illustrate that light beam has passed through the laser beam perforation on target 31, the light beam which sends is parallel to screen
Curtain on the contrary, if the light beam that sends of some infra-red laser diode does not form speck on platform 41 is reflected, illustrates that this is red
The light beam that outer laser diode is sent is not parallel to screen 21, it is necessary to using regulating part to the light beam of the infra-red laser diode
Exit direction is adjusted.To realize the adjusting, regulating part as described in Figure 1 can be used in the regulating part, according to actual need
The adjusting to infra-red laser diode in each dimension can be realized, including infra-red laser diode can be adjusted each
Displacement and angle on direction, the corresponding regulating part of each infra-red laser diode can be fixed on a common pedestal.
When being related to multigroup infra-red laser diode, every group of infra-red laser diode can be fixed on different pedestals, so as to convenient
After one group of infra-red laser diode has been adjusted, this group of infra-red laser diode is removed as needed, and move into another group it is red
Outer laser diode.The regulating part can be can refer in above-described embodiment and retouched by the regulating part illustrated in above-described embodiment
The content stated is understood that details are not described herein again.
In some embodiments 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, target and reflection platform are also along curved surface cloth
It is placed on screen.The light parallel to screen being emitted from infra-red laser diode again passes through target laser beam perforation, is reflecting
Speck is formed on platform, just like described in earlier in respect of figures 2, details are not described herein again.
As shown in figure 3, the infrared light curtain for generation parallel to screen that Fig. 3, which is another embodiment of the invention, to be provided
The flow chart of method, the described method includes：
S21：At least two infra-red laser diodes are placed on screen, it is made to emit infrared beam.
S22：Reflection platform is arranged in the exit direction of light beam.
S23：Target is arranged between the infra-red laser diode and reflection platform, is provided on the target multiple
Laser beam perforation, the laser beam perforation and the reflection platform are arranged so that：Infra-red laser diode send parallel to screen
Light beam can sequentially pass through laser beam perforation on target, finally form speck on the reflection platform.
S24：It whether there is speck on the detection sensor detection reflection platform, when presence and infra-red laser diode
Number different speck when, implement the adjusting to infra-red laser diode in each dimension using regulating part, make final anti-
The number for penetrating the speck formed on platform is identical with the number of infra-red laser diode.
Component and connection relation therein involved by each steps of more than S21-S24 may be referred to front and done around Fig. 2
Description.
The structure of more than regulating part can refer to the content illustrated in above-described embodiment and be understood that details are not described herein again.
For example, can by target 31 multiple laser beam perforations 311,312 ..., the distance of m to screen 21 be arranged to one
Cause, when the light beam through on target 31 multiple laser beam perforations 311,312 ..., m when, formed on the reflection platform 41
The speck that can be taken by thermal camera.Can will reflection platform 41 be arranged on beam exit direction, herein under the premise of,
Reflection platform can be for example arranged at the edge of screen 21 or be arranged at outside screen 21.In some implementations of the present invention
In example, reflection platform 41 can be paper, lath or infrared light backlight etc., and the presence of the backlight is being observed convenient for human eye
The region for substantially needing to observe quickly is navigated to during thermal camera, the light intensity of backlight can be very weak, only provides an observation
Guide.
Target 31 can be pasted on the surface of screen 21 with adhesive material or be removably fixed to screen.
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 target
Multiple laser beam perforations 311 on 31,312 ..., the axis direction of m it is identical with the beam exit direction parallel to screen, along light
The thickness of beam-emergence direction needs to meet certain preset value, which can empirically be worth to obtain, to ensure light beam energy
Enough parallel passes through laser beam perforation.Can make multiple laser beam perforations 311 on the target 31,312 ..., the number of m can be with
It is more than and/or the number of equal to every group infra-red laser diode mid-infrared laser diode, multiple laser beam perforations on target 31
311st, 312 ..., the distance between m can be set in advance, can also according to multiple infra-red laser diodes 101,
102nd, 103 ..., the distance between n is adjusted.For example, in the case where being related to multigroup infra-red laser diode, group and group
Between infra-red laser diode be spaced arrangement or it is front and rear on laser emitting direction placed in two rows of, heel row it is red
The light beam that outer laser diode is sent is emitted from the gap between front-seat infra-red laser diode, difference group infrared laser two
The distance between adjacent infra-red laser diode may be different in pole pipe, therefore, test previous group infra-red laser diode hair
It, can be by adaptively adjusting target 31 when testing the light beam that next group of infra-red laser diode is sent after the light beam gone out
The distance between upper multiple laser beam perforations, enable to adapt to the distance between next group of infra-red laser diode, so that
Foregoing target can be used when being debugged to different groups of infra-red laser diodes, improve the flexibility of test, and can save
Resource-saving.
Detection sensor 51 can reflect the speck formed on platform 41 by black light with captured in real-time, if some is infrared
The light beam that laser diode is sent forms speck on reflection platform, then illustrates that light beam has passed through the laser beam perforation on target 31,
The light beam that the infra-red laser diode is sent is parallel to screen；On the contrary, if the light beam that some infra-red laser diode is sent does not have
Have and form speck on reflection platform 41, then illustrate that the light beam that the infra-red laser diode is sent is not parallel to screen 21, it can be with
The beam exit direction of the infra-red laser diode is adjusted using regulating part as shown in Figure 1.To realize the adjusting,
Infra-red laser diode can be installed on a regulating part, which can realize 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 installed part of a infra-red laser diode can be fixed on a common pedestal.It is multigroup infrared sharp when being related to
During optical diode, every group of infra-red laser diode can be fixed on different pedestals, so as 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.
It should be noted that although the present embodiment is generated to provided by the invention parallel to screen with step S21 to step S24
The method of infrared light curtain of curtain is illustrated, but not because of above-mentioned steps to the generation provided by the invention parallel to screen
The method of infrared light curtain be defined, that is to say, that in some cases, the action recorded in detail in the claims or step
Desired result can be performed and still can realize according to different orders in this present embodiment.In certain embodiments
In, multitasking and parallel processing is also possible or it may be advantageous.
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 present invention then preferably solves these
Problem avoids detection process and contact identification software is depended on unduly, reduces corresponding cost.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (10)
1. a kind of for adjusting the regulating part of infra-red laser diode light beam pitch angle, the regulating part includes：
Mounting bracket, including mounting portion and support base, the mounting portion includes hole of perforating and fasten, and the fastening hole and described wears
Hole is mutually perpendicular to, and the fastening hole is connected with the perforation, and adjusting through hole, the fastening hole are provided in the support base
It is interior to be equipped with fastener, for infra-red laser diode to be fixed on along beam exit direction in the perforation；
Adjustment means are movably connected between the adjusting through hole and mounting base, for adjusting the shooting angle of the light beam；
Mounting base, is provided with adjusting slot, the adjustment means be arranged at the adjusting through hole and the adjusting slot it
Between.
2. according to claim 1 for adjusting the regulating part of infra-red laser diode light beam pitch angle, feature exists
In the support base is rectangle, and an adjusting through hole is respectively equipped on four angles of the support base.
3. according to claim 1 for adjusting the regulating part of infra-red laser diode light beam pitch angle, feature exists
In the adjustment means include screw and elastic component, and the elastic component is set in the screw, one end of the screw
Through the adjusting through hole, the other end of the screw is assigned into the adjusting slot.
4. according to claim 1 for adjusting the regulating part of infra-red laser diode light beam pitch angle, feature exists
In the elastic component is spring or rubber cushion.
5. a kind of for generating the device of the infrared light curtain parallel to screen, described device includes：
At least two infra-red laser diodes, are arranged on screen, for emitting infrared beam；
Adjustable installed 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；
Target is placed between the infra-red laser diode and reflection platform, multiple laser beam perforations is provided on the target,
The laser beam perforation and the reflection platform are arranged so that：The light beam parallel to screen that infra-red laser diode is sent can
The laser beam perforation on target is sequentially passed through, finally forms speck on the reflection platform；
Detection sensor is used to detect on the reflection platform with the presence or absence of speck, when presence and infra-red laser diode
During the different speck of number, the adjustable installed part implements the adjusting to infra-red laser diode in each dimension, makes most
The number of the speck formed eventually on reflection platform is identical with the number of infra-red laser diode.
6. the device according to claim 5 for being used to generate the infrared light curtain parallel to screen, which is characterized in that
Reflection platform is arranged in the exit direction of light beam, on screen；Or
Reflection platform is arranged in the exit direction of light beam, outside screen.
7. the device according to claim 5 for being used to generate the infrared light curtain parallel to screen, which is characterized in that described more
A laser beam perforation is column, and the axis direction of the column laser beam perforation is identical with the beam exit direction parallel to screen.
8. the device according to claim 5 for being used to generate the infrared light curtain parallel to screen, which is characterized in that laser is worn
Interval between hole can be adjusted.
9. the device according to claim 5 for being used to generate the infrared light curtain parallel to screen, which is characterized in that the target
Mark is affixed on the surface of screen with adhesive material or target is removably fixed to screen.
10. the device according to claim 5 for being used to generate the infrared light curtain parallel to screen, which is characterized in that described
Regulating part is the regulating part for being used to adjust infra-red laser diode light beam pitch angle described in claim 1-4 any one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711360952.4A CN108110606A (en) | 2017-12-18 | 2017-12-18 | Regulating part, the device for generating the infrared light curtain parallel to screen |
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|---|---|---|---|
| CN201711360952.4A CN108110606A (en) | 2017-12-18 | 2017-12-18 | Regulating part, the device for generating the infrared light curtain parallel to screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112631453A (en) * | 2020-09-16 | 2021-04-09 | 安徽鸿程光电有限公司 | Touch device |
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