CN207541606U - Generate the device for the infrared light curtain for being parallel to screen - Google Patents
Generate the device for the infrared light curtain for being parallel to screen Download PDFInfo
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- CN207541606U CN207541606U CN201721765029.4U CN201721765029U CN207541606U CN 207541606 U CN207541606 U CN 207541606U CN 201721765029 U CN201721765029 U CN 201721765029U CN 207541606 U CN207541606 U CN 207541606U
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- screen
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Abstract
The utility model discloses a kind of device for the infrared light curtain for generating and being parallel to screen, described device includes：At least two infra-red laser diodes are set to the upper of screen, and for emitting infrared beam, the light beam that multiple laser diodes are sent out forms infrared light curtain in screen surface；Adjustable installed part, implements the adjusting in each dimension to infra-red laser diode；Platform is reflected, is set in the exit direction of light beam；Prover is set between infra-red laser diode and reflection platform, and the light that prover is sent out is formed in parallel with the reference line of reflection platform on the screen；For detecting reference line and image, laser diode is adjusted according to result of detection for detection sensor, until the distance between the position of image and reference line are equal to a preset value, so that infrared light curtain is parallel to the screen.The utility model enables to the light curtain thickness of screen surface uniform, improves precision and the accuracy of touch, has good consistency.
Description
Technical field
The utility model is related to technical field of intelligent interaction, and in particular to a kind of generation is parallel to the infrared light curtain of screen
Device.
Background technology
At present, sector light beam, multiple sector beam combinations are generally generated by laser diode combination Bao Weier prism
After form infrared light curtain, realize the covering to screen.In the screen touch-control man-machine interactive system based on infrared light curtain, due to red
Outer light is black light, so to ensure that difficulty is very when the light beam that multiple laser diodes are sent out is parallel with screen when mounted
Greatly.
If the infrared light curtain that laser is sent out is not parallel with screen, it will appear the problem of touch information is inaccurate, sternly
Ghost image rings the sensitivity and accuracy touched.
Utility model content
In view of this, the utility model embodiment provides a kind of device for the infrared light curtain for generating and being parallel to screen.
The utility model embodiment provides a kind of device for the infrared light curtain for generating and being parallel to screen, described device packet
It includes：
At least two infra-red laser diodes are set to the upper of screen, for emitting infrared beam, multiple two poles of laser
The infrared beam that pipe is sent out forms infrared light curtain in screen surface；
Adjustable installed part, for implementing the adjusting to infra-red laser diode in each dimension；
Platform is reflected, is set in the exit direction of infrared beam；
Prover is set between the infra-red laser diode and reflection platform, and the prover includes infrared light
Source, the light which sends out are formed in parallel with the reference line of reflection platform on the screen；
Detection sensor is used to detect the reference line and described image, and laser diode is adjusted according to result of detection,
Know that the distance between the position of described image and described reference line are equal to a preset value, so that the infrared light curtain is parallel to institute
State screen.
In some embodiments, the prover includes two pole of more than two infraluminescences as the infrared light supply
Pipe, described two above infrared light-emitting diodes connect to form the reference line.
In some embodiments, the prover be backlight, the light-emitting surface of the backlight or opposite with light-emitting surface
The surface for fitting in the screen on one side of setting.
In some embodiments, the reflection platform normal to screen, the reflection platform include paper, the back of the body
Any one in tabula rasa, wall or projection screen.
In some embodiments, prover and reflection platform be wholely set, the light that prover is sent out from reflection platform with
The side of screen fitting is projected, and is formed in parallel with the reference line of reflection platform.
In some embodiments, the distance of screen described in one lateral extent of separate screen of the light beam is h, and the reflection is flat
The width of platform along the vertical direction of the screen is small more than or equal to the distance between h, two optical diaphragms of the backlight
In h.
In some embodiments, in the distance of the vertical direction of screen described in the reflection platform upper edge at h
Label is provided with, when described image is located at side of the label far from screen, adjusts two pole of laser
Pipe, makes the light beam that it sends out close to screen；When described image is located at the label close to the one of screen
During side, laser diode is adjusted, the position for making described image is identical with the distance between the reference line.
In some embodiments, the detection sensor is infrared camera.
In some embodiments, the screen is faces screen or curve screens directly.
In some embodiments, described image is strip image or circular spot shape image.
The generation that the utility model embodiment provides is parallel to the device of the infrared light curtain of screen, passes through the outgoing in light beam
Direction setting reflection platform, sets the prover that can send out infrared light, school between infra-red laser diode and reflection platform
The infrared light of quasi- instrument is formed in parallel with the reference line of reflection platform on the screen, according to the result of detection of detection sensor, uses
Adjustable installed part adjusts infra-red laser diode, until between the image and reference line that light beam is formed on reflection platform
When distance is equal to preset value, the infrared light curtain of formation is parallel to screen.The utility model enables to the red of screen surface as a result,
Outer light curtain thickness is uniform, improves precision and the accuracy of touch, has good consistency.
Description of the drawings
Fig. 1 is that the flow of the device for the infrared light curtain that the generation that the utility model one embodiment provides is parallel to screen is shown
It is intended to.
Fig. 2 is that the structure of the device for the infrared light curtain that the generation that the utility model one embodiment provides is parallel to screen is shown
It is intended to.
Fig. 3 is a kind of structural representation on the surface that the prover that the utility model one embodiment provides fits in screen
Figure.
Fig. 4 is another structural representation on the surface that the prover that the utility model one embodiment provides fits in screen
Figure.
Fig. 5 is the structure chart for the installed part that can be used for the utility model.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
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 part of the embodiment, instead of all the embodiments.
It should be noted that in the absence of 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.
As shown in Figure 1, Fig. 1 is the side of the infrared light curtain provided by one embodiment of the present invention that screen is parallel to for generation
The flow diagram of method, the method includes：
S11：Multiple laser diodes are set to the top of screen, lighting the multiple laser diode makes it send out light
Beam.
In embodiments of the present invention, as shown in Fig. 2, Fig. 2 is that the infrared light for being parallel to screen is generated in the embodiment of the present invention
The structure diagram of the device of curtain, multiple laser diodes 101,102 ..., n be arranged in the top of screen a in the form of an array,
Light multiple laser diodes 101,102 ..., n.Can be as needed, loaded before laser diode collimation focusing lens,
Bao Weier prism etc., so that the light beam can be collimation and the rectilinear light beam or sector light beam of focusing.It is multiple to swash
Optical diode 101,102 ..., the light beams that send out of n form top-down infrared light curtain along the surface of screen a.
The multiple laser diode for example can be first respectively arranged in multiple installed parts 51 as shown in Figure 5, each
Installed part 51 can be installed on by the knob (not shown) of surrounding on the fixed frame of L-shaped, and the fixed frame of L-shaped is fixed on screen
Curtain top；The light that laser diode is sent out passes through the hole of 51 front end of installed part to project.All installed part arranged in rows are arranged in same
One height, and the edge in the hole of installed part front end is made to recline screen, although this can't ensure that emergent light is completely parallel to screen.
By the precession and back-out of the screw of surrounding, the pitch angle of the emergent light of laser diode can be angularly finely adjusted, be
This, the bottom of installed part 51 can be fixed on an elastic base, in figure for simplicity, elastic base is not shown.In view of
The adjusting that pitch angle etc. is carried out by certain methods has been known to those skilled in the art, therefore no further details here, and Fig. 5 is also only
It shows roughly.
S12：Reflection platform is set to the exit direction of the light beam, the light beam is radiated at shape on the reflection platform
Into image.
In this step, reflection platform 301 can be set to multiple laser diodes 101,102 ..., the light beams that send out of n
Exit direction, for example, can will reflection platform 301 set on the screen, for example, it is opposite to be set to multiple laser diodes
The edge of screen, alternatively, reflection platform 301 can be arranged on outside screen, for example, it is opposite to be arranged on multiple laser diodes
On the extended line at the edge of screen, reflection is formed so that the light beam that multiple laser diodes are sent out can be radiated on reflection platform
Image, when laser diode sends out the rectilinear light beam of collimation and focusing, the reflected image is circular reflected image；When sharp
When optical diode sends out sector light beam, the reflected image is that (herein, two long sides can be considered as the reflected image of strip
The upper and lower surfaces (or the face far from screen or face of close screen) of sector light beam in the thickness direction thereof are flat with reflection
Platform acts on what is formed).
In some embodiments, reflection platform 301 can be vertically set on the screen a opposite with multiple laser diodes
Edge.
S13：Prover is fitted in the surface of the screen, the infrared light supply that the prover includes is made to send out light, it should
The light that light source is sent out is formed in parallel with the reference line of reflection platform on the screen.
Please continue to refer to Fig. 2, can prover 201 be fitted in the surface of screen a by cohesive material, alternatively, can lead to
The surface that prover 201 is removably attached to screen a by dismountable connector is crossed, prover 201 can include sending out
Go out the light source of infrared light, screen surface can be set to and by the position of near reflex platform 301, meanwhile, prover 201 can be put down
For row in the edge for the screen for being provided with reflection platform 301, the light that the infrared light supply is sent out for example can be along on prover
The side position to recline with screen transmits, so that the sensor that can be detected for forming bright together in the position detects
Lines, which is parallel to reflection platform, will be used as with reference to line, prover and screen can be determined by the lines position
The position to recline.The cohesive material is, for example, glue or double faced adhesive tape.The length of prover 201 can be with the length or width of screen
The identical either different such as shorter than length or width of screen.Detection sensor b is set to the upper front of screen a at a certain angle,
The detection sensor b can be infrared camera, such as：Infrared camera b is set to a certain apart from screen above screen a
The position of horizontal distance (being, for example, 1m), and screen a and reflection platform 301 are respectively positioned in the angular field of view of infrared camera b.
Under some cases, prover and reflection platform can be wholely set, and the light that prover is sent out is bonded from reflection platform with screen
Side project, be formed in parallel with reflection platform reference line.
In some embodiments of the invention, as shown in figure 3, Fig. 3 is prover fitting provided by one embodiment of the present invention
A kind of schematic diagram when screen surface, the prover 201 includes more than two infrared light-emitting diodes, more than two
Infrared light-emitting diode with predetermined interval be affixed on screen a surface or more than two infrared light-emitting diodes between arbitrary
Every the surface for fitting in screen a.Such as：At least two infrared light-emitting diodes are pasted on to the table of screen a with adhesive material
Face, and make its shinny at least two infrared light-emitting diode power supply, at least two infrared light-emitting diodes hair
The luminous point that the infrared light gone out is formed connects, and forms the reference at a screen a edge for being parallel to 301 place of reflection platform
Line.
In some embodiments of the invention, as shown in figure 4, Fig. 4 is the another of prover provided by one embodiment of the present invention
A kind of structure diagram, the prover 201 can be backlights, and the backlight can be the back of the body for having side light emitting structure
Tabula rasa or the backlight with bottom-emission structure.Backlight with side light emitting structure is that LED light source is set to the back of the body
Between the side in the space of the two panels optical diaphragm composition of tabula rasa, LED sends out the light of required brightness, by light guide plate in backlight
Effect, side light source is converted to formal area source, so as to which backlight be made to emit beam；The back of the body with bottom-emission structure
Tabula rasa be by LED light source array be uniformly arranged on backlight two panels optical diaphragm form space bottom, LED light source array
It is emitted beam with the direction perpendicular to light-emitting surface.
In some embodiments, opposite with light-emitting surface screen a can be pasted on the light-emitting surface of backlight or on one side
Surface, and the screen edge that backlight side is parallel to where reflection platform 301, detection sensor b acquisition backlights
The infrared light that sends out of side, the lines of infrared light in the picture so as to which backlight side be sent out are as referring to line.It is described
The length of backlight can be identical with the length and width edge of screen.
S14：The reference line and described image are detected using detection sensor, two pole of laser is adjusted according to result of detection
Pipe, until the distance between the position of described image and the reference line are equal to a preset value, so that the infrared light curtain is parallel
In screen.
In the present embodiment, when lighting laser diode so that when laser diode sends out light beam, the energy on reflection platform
Enough form image, the surface that prover is fitted in screen sends out the light of infrared light supply, at this point, detection sensor b can be adopted in real time
The light and the strip on reflection platform 301 or circular reflected image that collection prover 201 is sent out.The reflection platform can
To be any one in paper, backlight, wall or screen.In some embodiments of the invention, the detection sensor is
Infrared camera, the light that prover is sent out are infrared light.At this point, infrared camera can the light that sends out of captured in real-time prover and
The strip or circular reflected image formed on reflection platform 301.The knob on installed part is adjusted, until infrared camera is shown
Show that strip image is parallel to the reference line (herein, parallel refer to strip image two are long on reflection platform 301
While being respectively parallel to the reference line, two long sides can be considered as two up and down of sector light beam in the thickness direction thereof
Face with reflection platform action formed) namely the position of described image it is identical with the distance between the reference line；Or reflection
Multiple circular images on platform 301 are all identical to the distance between the reference line, at this point it is possible to think each laser diode
The light beam sent out is parallel to each other, when the distance meets preset value, judges that the light curtain that the light beam is formed is parallel to screen.
In some embodiments of the invention, the light beam of laser diode transmitting distance screen at marginal position on the screen
The thickness of curtain a is h, such as distance of the light beam on the screen at marginal position apart from screen is 3mm.It can will reflect platform 301
It is set greater than being equal to h along the width in vertical screen direction, it in practical applications, can be on reflection platform apart from screen edge
Distance makes marks line for the place of h, when the strip on reflection platform or circular image are located at side of the mark line far from screen
When, the distance for illustrating beam distance screen has been more than h, needs to adjust the pitch angle between laser diode and screen, makes laser
The light beam that diode is sent out is close to screen；When the strip on reflection platform or circular image are located at mark line close to the one of screen
During side, the distance for illustrating beam distance screen within a preset range, can continue to adjust the knob on laser diode installed part,
So that the position of the strip image is parallel with the reference line, (herein, parallel refer to strip image two are long
While being respectively parallel to the reference line, two long sides can be considered as two up and down of sector light beam in the thickness direction thereof
Face is formed with reflection platform action) or so that the position of multiple circular images is identical with the distance between the reference line.
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..
In some embodiments of the invention, when laser diode send out collimation and focus on light beam when, the screen can be with
To face screen or curve screens directly, laser diode can in the top of curve screens along curve flexible arrangement, so as to
Enough ensure the light curtain even density on curve screens surface, at this point it is possible to make corresponding mark line or reference line curved also along curved surface
Song distribution.The device of infrared light curtain is generated using provided in an embodiment of the present invention, even if can ensure in face of curve screens, light curtain
Still screen can be parallel to, accuracy and sensitivity are touched so as to improve.
It should be noted that although the present embodiment is parallel to screen with step S11 to step S14 to generation provided by the invention
The method of the infrared light curtain of curtain is illustrated, but not because of generation of the above-mentioned steps to the infrared light curtain provided by the invention
Method is defined, that is to say, that in some cases, the action recorded in detail in the claims or step can be according to differences
Sequence in this present embodiment performs and still can realize desired result.In addition, also not only by shown in figure
Particular order or consecutive order could realize desired result.In some embodiments, multitasking and parallel place
It manages also possible or it may be advantageous.
During the device of infrared light curtain for being parallel to screen using generation provided in an embodiment of the present invention, screen table is enabled to
The infrared light curtain thickness in face is uniform, improves precision and the accuracy of touch, has good touch consistency.
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 device for generating the infrared light curtain for being parallel to screen, which is characterized in that described device includes：
At least two infra-red laser diodes, are set on screen, and for emitting infrared beam, multiple laser diodes are sent out
Infrared beam screen surface formed infrared light curtain；
Adjustable installed part, for implementing the adjusting to infra-red laser diode in each dimension；
Platform is reflected, is set in the exit direction of infrared beam；
Prover is set between the infra-red laser diode and reflection platform, and the prover includes infrared light supply, should
The light that infrared light supply is sent out is formed in parallel with the reference line of reflection platform on the screen；
Detection sensor is used to detect the reference line and image, laser diode is adjusted according to result of detection, until described
The distance between the position of image and the reference line are equal to a preset value, so that the infrared light curtain is parallel to the screen.
2. the device according to claim 1 for generating the infrared light curtain for being parallel to screen, which is characterized in that the prover
Including more than two infrared light-emitting diodes as the infrared light supply, described two above infrared light-emitting diodes connect
It connects to form the reference line.
3. the device according to claim 1 for generating the infrared light curtain for being parallel to screen, which is characterized in that the prover
For backlight, the light-emitting surface of the backlight or the surface for fitting in the screen on one side being oppositely arranged with light-emitting surface.
4. the device according to claim 1 for generating the infrared light curtain for being parallel to screen, which is characterized in that the reflection is flat
Platform normal to screen, the reflection platform include any one in paper, backlight, wall or projection screen.
5. the device according to claim 1 for generating the infrared light curtain for being parallel to screen, which is characterized in that prover and anti-
It penetrates platform to be wholely set, the light that prover is sent out is projected from the side being bonded with screen of reflection platform, is formed in parallel with reflecting
The reference line of platform.
6. the device according to claim 3 for generating the infrared light curtain for being parallel to screen, which is characterized in that the light beam
Distance far from screen described in one lateral extent of screen is h, and the width of reflection platform along the vertical direction of the screen is big
In equal to the distance between h, two optical diaphragms of the backlight be less than h.
7. the device according to claim 6 for generating the infrared light curtain for being parallel to screen, which is characterized in that in the reflection
The distance of the vertical direction of screen described in platform upper edge is is provided with label at h, when described image is located at the label far from screen
During the side of curtain, laser diode is adjusted, makes the light beam that it sends out close to screen；When described image is close positioned at the label
During the side of screen, laser diode is adjusted, the position for making described image is identical with the distance between the reference line.
8. the generation according to claim 1-7 any one is parallel to the device of the infrared light curtain of screen, which is characterized in that
The detection sensor is infrared camera.
9. the generation according to claim 1-7 any one is parallel to the device of the infrared light curtain of screen, which is characterized in that
The screen is faces screen or curve screens directly.
10. the generation according to claim 1-7 any one is parallel to the device of the infrared light curtain of screen, feature exists
In described image is strip image or circular spot shape image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721765029.4U CN207541606U (en) | 2017-12-18 | 2017-12-18 | Generate the device for the infrared light curtain for being parallel to screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721765029.4U CN207541606U (en) | 2017-12-18 | 2017-12-18 | Generate the device for the infrared light curtain for being parallel to screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207541606U true CN207541606U (en) | 2018-06-26 |
Family
ID=62618738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721765029.4U Active CN207541606U (en) | 2017-12-18 | 2017-12-18 | Generate the device for the infrared light curtain for being parallel to screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207541606U (en) |
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2017
- 2017-12-18 CN CN201721765029.4U patent/CN207541606U/en active Active
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Effective date of registration: 20230331 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. |