CN101957688A - Method and device for multiply identifying surface infrared laser curtains - Google Patents
Method and device for multiply identifying surface infrared laser curtains Download PDFInfo
- Publication number
- CN101957688A CN101957688A CN2009101579082A CN200910157908A CN101957688A CN 101957688 A CN101957688 A CN 101957688A CN 2009101579082 A CN2009101579082 A CN 2009101579082A CN 200910157908 A CN200910157908 A CN 200910157908A CN 101957688 A CN101957688 A CN 101957688A
- Authority
- CN
- China
- Prior art keywords
- curtain
- laser
- infrared
- infrared laser
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a device and a method for multiply identifying surface infrared laser curtains, which is suitable for forming an infrared light-spot image capable of performing multiple direction identification on the full screen surface in an infrared image identification scheme carrying out multiple operations on the surface of a transmission display screen, and the invention relates to a method for forming the surface infrared laser curtain multiply identified on the surface of the transmission display screen and preventing the laser light from being leaked outwards. According to the invention, a laser curtain launcher (1) receives an infrared laser beam (3) from an infrared laser light emitting pipe (2) to lead the beam to form a ray expanding forward and form an off-axis fan-shaped curtain (4) based on the ray expanding forward; according to the invention, multiple laser curtain launchers are determined to be symmetrically arranged fixedly on the four symmetrical angles on the surface of the curtain, so as to form a multidirectional laser curtain with the forward-expanding light direction, thus the multiple touch operation from any direction of the screen can obtain the shoot of the laser beam, and the surface infrared laser curtain of the infrared light-spot image corresponding to multiple operations can be formed.
Description
Technical field
The present invention relates to a kind of multiple identified surface infrared laser curtain device, be suitable in the infrared image identifying schemes of transmissive display scene plot face multiple operation, carrying out the infrared laser curtain formation of full frame surperficial multiple operation orientation recognition.The invention still further relates to the method that the infrared laser curtain forms and the prevention laser beam leaks outside of the multiple identification of a kind of screen surface.
Technical background
The surface infrared laser is a kind of multiple identification infrared light spot image formations technology, its operative installations arrange and screen surface covering infrared laser curtain realizes being used for the infrared light spot image of multiple identification.Expansion light is when 1---2mm closer to each other arranges in screen surface or nearer distance before a plurality of surperficial infrared laser one alignment of laser technology device outside being equipped with surface red, and described device is set up and also formed screen surface infrared laser curtain.Expansion light forms the laser curtain in screen surface before surperficial infrared laser one alignment of device.As a kind of technology in the multiple identification infrared light spot of a large amount of transmissive display scene plot faces image formation technology, the design of surperficial infrared laser is a purpose with the multiple identification infrared light spot image formation technology of the transmissive display scene plot face of dull and stereotyped transmissive liquid crystal display apparatus and back projection table surface display device especially.
As everyone knows, in the technology that the infrared image of various multiple identified surface forms, cost and power consumption are all very big, and in order to realize obtaining the infrared image of multiple identified surface, its surfacing also has very big restriction in addition.
Can obtain the total internal reflection techniques FTIR of the infrared image of multiple identified surface, must use a large amount of LED infraluminescence pipes be arranged in screen around, not only cost is higher but also can produce a large amount of heats, power consumption is also very big simultaneously, must use solder technology in addition, the screen surface of total internal reflection techniques FTIR technology must be used the acrylic acid material with complete interior diffusion function, the screen surface material has single restriction, total internal reflection techniques FTIR is easy to disturbed, requires very high to environment for use.
Can obtain the another kind of technology back diffusion irradiation DI technology of the infrared image of multiple identified surface, Infrared is irradiation upwards, long-term direct projection meeting makes people's eyes be subjected to radiation to be unfavorable for health, and be difficult to obtain a uniform infrared diffusion light, can increase a lot of costs for this reason, also very high to environment requirement in the use, be subject to environmental interference.
Can obtain the another kind of technology front diffusion irradiation DI technology of the infrared image of multiple identified surface, all Infrared forming devices and the whole peripheral hardwares of infrared image identification equipment can not form integration product.
The technology that can obtain the infrared image of multiple identified surface also has back diffusion irradiation DI technology and total internal reflection techniques FTIR complex art DSI, this technology needs a large amount of inputs on acrylic acid structural design, and, be difficult to obtain a stable infrared light spot image by software control because need pressure to produce the infrared light spot image.Rou Ruan surface diffusion structure is difficult to realize bigger surperficial multiple operation screen in the use in addition.
Can obtain the surface laser curtain scanister technology of single or negligible amounts of the infrared image of multiple identified surface, radiation direction is more single, back finger in the light can be blocked by the finger of front and can't produce a plurality of infrared light spot images in the same way, can't realize that full frame a plurality of corner do not have dead angle infrared light spot image identification.The standards for safe use of laser and leakproof all will be obstacles of surface laser curtain in addition.
Therefore, exploitation realizes that a kind of brand-new to make up multi-faceted a, mounted on surface, multiple identified surface infrared laser (SIRL) curtain device and method anti-interference and safe in utilization with a plurality of Laser emission scanister be very necessary as a kind of technology in the multiple identification infrared light spot of the transmissive display scene plot face image formation technology in a large number.
Summary of the invention
The object of the invention is to provide a kind of multiple identified surface infrared laser (SIRL) curtain apparatus and method, and this device and method is suitable for the user carries out full frame surface multiple identified surface infrared laser curtain in the infrared light spot image identifying schemes of transmissive display scene plot face multiple operation formation.Another object of the present invention provides the method that the infrared laser curtain forms and the prevention laser beam leaks outside of the multiple identification of a kind of screen surface, this method and device can be by realizing that in the lip-deep clamper stationary installation of display screen the whole screen scanner uni of laser curtain stops leaking outside of laser beam, user-friendly, can be widely used in as a kind of technology in a large amount of multiple identification infrared light spot of transmissive display scene plot face image formation technology, for achieving the above object, the present invention adopts following technical scheme: a kind of multiple identified surface infrared laser curtain device, and this device comprises; Laser curtain transmitter, infrared laser luminotron, infrared laser light beam, off-axis fan-shaped curtain, clamper stationary installation.The infrared laser luminotron of this multiple identified surface infrared laser curtain device, it is the infrared laser luminotron of a safe light intensity emissive power, it is installed on the back of generating laser, produce the infraluminescence and the laser beam of 5-10mw power safety, supply with the laser light path to infrared laser curtain transmitter, this light path arrives the surface of infrared laser curtain transmitter, laser continues emission forward, infrared laser curtain transmitter also forms beam of laser light that expansion light forms an off-axis fan-shaped curtain simultaneously before one alignment, by clamper fixing means, to reach the purpose that covers whole transmissive display scene plot face laser curtain to infrared laser curtain device and multiple arrangement.The method that the infrared laser curtain of the multiple identification of a kind of screen surface forms and stops laser beam to leak outside, this method includes: described multiple identified surface infrared laser curtain device also comprises; The method that forms surperficial infrared laser curtain and stop laser to leak outside is utilized described symmetrical stationary installation, laser curtain emitter is hidden and fixing clamper, is installed on the upper surface both sides and the projection of transmissive display curtain.Jut is higher than the laser curtain and is used to stop laser beam to leak outside, a plurality of infrared laser curtain devices are also hidden fixing at transmissive display scene plot face by symmetrical stationary installation clamper symmetry arrangement, form before the multi-faceted alignment expansion light and according to established off-axis fan-shaped laser curtain, a plurality of infrared laser curtain device symmetry arrangement are in transmissive display scene plot face, when four corners that a plurality of multiple identified surface infrared laser curtain devices lay respectively at transmissive display curtain upper surface by symmetrical stationary installation clamper and when hiding fixedly, form multiple identified surface infrared laser curtain device mutually from different angle symmetry shooting scanning, expand light before the alignment that multiple identified surface infrared laser curtain device is produced and cover shooting scanning respectively with the off-axis fan-shaped at transmissive display scene plot face, and the spacing of 1-2mm is arranged between maintenance and the transmission display surface screen, its form shape shows as an invisible infrared laser curtain.Described symmetrical stationary installation is fixed on the both sides of transmissive display curtain upper surface and is raised in transmissive display scene plot face and the laser curtain, stop that laser beam leaks outside, form the complete laser curtain of a safety, and form the complete invisible laser curtain that can cover whole transmissive display curtain upper surface.The infrared laser curtain of the safety that this method produces is covered in transmissive display curtain upper surface.No matter operate the shooting that can both obtain laser beam, can both form surperficial infrared laser (SIRL) curtain of the corresponding infrared light spot image of a plurality of operations from the multi-touch in any orientation of screen.
The present invention is owing to be provided with the infrared form multi-touch of optical fiber introducing-type screen device on the multi-touch surface, therefore, in the use of the transmissive display scene plot face of dull and stereotyped transmissive liquid crystal display apparatus and back projection table surface display device, being fit to multiple identification infrared light spot image forms and multi-touch, the present invention and prior art contrast, its effect is that give prominence to, tangible, and enforcement of the present invention has improved the practicality of product and the facility of future life greatly.
Description of drawings
The present invention further describes by the following drawings: mark identical among the figure is represented identical same parts.
Fig. 1 is multiple identified surface infrared laser curtain of the present invention and device clamper fixed sturcture synoptic diagram.
Fig. 2 is the single infrared laser curtain apparatus structure synoptic diagram of Fig. 1.
Fig. 3 is two infrared laser curtain device shooting Scan Architecture synoptic diagram of symmetry.
Fig. 4 is two adjacent infrared laser curtain device shooting Scan Architecture synoptic diagram.
Fig. 5 is the distributed architecture synoptic diagram of 4 light intersection regions among Fig. 4.
Fig. 6 is the leak outside structural representation of method of prevention laser beam of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described further, Fig. 1 is multiple identified surface infrared laser curtain of the present invention and device clamper fixed sturcture synoptic diagram, it has comprised the LASER Discharge Tube with Laser emission function, laser beam, laser curtain transmitter, off-axis fan-shaped laser curtain, the clamper stationary installation that laser leakproof and curtain are arranged and formed, the power standard of LASER Discharge Tube is limited to the 5-10mw milliwatt, clamper is fixed with two pairs of symmetrical laser curtain emitters respectively in four corners of transmissive display curtain, two off-axis fan-shaped curtain symmetries that wherein a pair of symmetrical laser curtain emitter emission forms have covered the surface of whole transmissive display curtain, and the curtain scanning ray has only two propagation directions.Two off-axis fan-shaped curtain symmetries stack that other two pairs of symmetrical laser curtain emitter emissions form has covered the surface of whole curtain and whole transmissive display curtain, its curtain scanning ray is same identical propagation direction with the above-mentioned symmetrical laser curtain of two couples emitter, the consistency that the stack of curtain has increased laser beam has also increased simultaneously the orientation of flying spot, make and no matter operate the shooting that can both obtain laser beam, can both form surperficial infrared laser (SIRL) curtain of the corresponding infrared light spot image of unrestricted a plurality of operation from the multi-touch in any orientation of screen.To reach the purpose that covers whole transmissive display scene plot face laser curtain.
Fig. 2 is the single infrared laser curtain apparatus structure synoptic diagram of Fig. 1, also is the exploded view of Fig. 1.Laser curtain transmitter is installed on the position, corner of transmissive viewing screen, fix by pre-designed clamper stationary installation clamper, the curtain axle center that laser curtain transmitter is launched just in time is the diagonal line of transmissive display curtain, the laser curtain transmitter of this corner is finished with the diagonal line laser scanning surface of the transmissive display curtain two/part that is boundary, and curtain light is all to a limit expansion.Concrete light scanning is at first by LASER Discharge Tube 202 emission beam of laser light 203, this light arrives laser curtain transmitter 201 through a light path, this laser curtain transmitter has one and a half months type one line glass lens to constitute, laser beam is expanded light before forming an alignment through laser curtain transmitter, make light form an off-axis fan-shaped curtain 204 by the clamper qualification, the limit axle of light is directly from a diagonal angle that the corner directive is relative of transmissive display curtain, the diagonal line of transmissive display curtain just, this laser curtain transmitter are finished the surface laser curtain of transmissive display curtain two/part with the scanning of off-axis fan-shaped curtain.
Fig. 3 is two infrared laser curtain device shooting Scan Architecture synoptic diagram of symmetry, laser curtain transmitter 301 is installed on the position, a corner of transmissive viewing screen, fix by pre-designed clamper stationary installation clamper, the curtain axle center that laser curtain transmitter is launched just in time is the diagonal line of transmissive display curtain, the laser curtain transmitter of this corner is finished with the diagonal line laser scanning surface of the transmissive display curtain two/part that is boundary, and curtain light is all to a limit expansion.Laser beam is expanded light before forming an alignment through laser curtain transmitter 301, make light form an off-axis fan-shaped curtain 303 by the clamper qualification, the limit axle of light is directly from a diagonal angle that the corner directive is relative of transmissive display curtain, the diagonal line of transmissive display curtain just, this laser curtain transmitter are finished the surface laser curtain of transmissive display curtain two/part with the scanning of off-axis fan-shaped curtain.Laser curtain transmitter 302 is installed on another position, corner of transmissive viewing screen, form the diagonal angle symmetric relation with laser curtain transmitter 301, fix by pre-designed clamper stationary installation clamper, the curtain axle center that laser curtain transmitter 302 is launched just in time is the diagonal line of transmissive display curtain, coincide with the diagonal line of the transmissive display curtain of laser curtain transmitter 301, the laser curtain transmitter 302 of this corner is finished with the diagonal line laser scanning surface of the another side two/part of the transmissive display curtain that is boundary, and curtain light is all to a limit expansion.Laser beam is expanded light before forming an alignment through laser curtain transmitter 302, make light form an off-axis fan-shaped curtain 304 by the clamper qualification, the limit axle of light is directly from a diagonal angle that the corner directive is relative of transmissive display curtain, the diagonal line of transmissive display curtain just, this laser curtain transmitter 302 are finished the surface laser curtain of transmissive display curtain another side two/part with the scanning of off-axis fan-shaped curtain.Laser curtain transmitter 301 is installed the fixing whole individual layer laser curtain scanning of also finishing transmissive display scene plot face jointly of clamper with laser curtain transmitter 302 symmetries.
Fig. 4 is two adjacent infrared laser curtain device shooting Scan Architecture synoptic diagram, can access comprehensive infrared light spot image in order to be implemented in the multiple operation identification, the present invention has increased the embodiment of a plurality of infrared laser curtain devices, except also having increased adjacent stack embodiment with diagonal angle symmetry embodiment among Fig. 3, to realize multi-faceted curtain light scanning, two adjacent infrared laser curtain devices 401 and 402 are finished the surface laser curtain of transmissive display curtain two/part respectively separately, the shooting of reporting to the leadship after accomplishing a task in the never same orientation of the surperficial light of transmissive display curtain scans, form and obtain a light overlapping portion 403, carry out herein accessing comprehensive infrared light spot image in the multiple operation identification, no matter operate the shooting that can both obtain laser beam from the multi-touch in light overlapping portion 403 any orientation.
Fig. 5 is the distributed architecture synoptic diagram of 4 light intersection regions among Fig. 4, it also is multiple identified surface infrared laser curtain formation method of the present invention, can access comprehensive infrared light spot image in order to be implemented in the multiple operation identification, the present invention has increased the embodiment of a plurality of infrared laser curtain devices, and laser curtain transmitter 501 is installed the fixing whole individual layer laser curtain scanning of also finishing transmissive display scene plot face jointly of clamper with laser curtain transmitter 503 symmetries.It is fixing and finish the whole individual layer laser curtain scanning of transmissive display scene plot face jointly and be superimposed on laser curtain transmitter 501 and laser curtain transmitter 503 symmetries and clampers whole individual layer laser curtains fixing and that finish transmissive display scene plot face jointly are installed are formed double-deck multi-faceted dense curtain light that laser curtain transmitter 502 and laser curtain transmitter 504 symmetries are installed clampers, wherein adjacent two laser curtain transmitters 501 and 504 shooting scanning of reporting to the leadship after accomplishing a task from different orientation forms and obtains a light overlapping portion 505.Adjacent two laser curtain transmitters 502 and 503 shooting scanning of reporting to the leadship after accomplishing a task from different orientation forms and obtains a light overlapping portion 507.Adjacent two laser curtain transmitters 501 and 502 shooting scanning of reporting to the leadship after accomplishing a task from different orientation forms and obtains a light overlapping portion 506.Adjacent two laser curtain transmitters 503 and 504 shooting scanning of reporting to the leadship after accomplishing a task from different orientation forms and obtains a light overlapping portion 508.Form and obtain four light zone of reporting to the leadship after accomplishing a task by four times mutually adjacent stacks, 505,506,507,508 cover the dense laser beams scanning curtain that obtains a multi-faceted light with whole screen.No matter operate the shooting that can both obtain laser beam from the multi-touch in any orientation of screen, can both form surperficial infrared laser (SIRL) curtain of the corresponding infrared light spot image of unrestricted a plurality of operation, to reach the purpose that covers whole transmissive display scene plot face laser curtain.
Fig. 6 is the leak outside structural representation of method of prevention laser beam of the present invention.The light in four zones of reporting to the leadship after accomplishing a task is respectively to the shooting scanning of clamper stationary installation 601,602 both sides, the clamper stationary installation forms the off-axis fan-shaped curtain except limiting laser curtain device, also will be at the rat of transmissive display curtain, the horizontal level that is higher than the laser curtain, be used for stopping leaking outside of laser beam, obtain the laser curtain of a safety.
Claims (9)
1. a multiple identified surface infrared laser curtain device is characterized in that comprising: be suitable for carrying out the formation of full frame surface multiple identified surface infrared laser curtain in the infrared light spot image identifying schemes of transmissive display scene plot face multiple operation.Described multiple identified surface infrared laser curtain device comprises; Laser curtain transmitter, infrared laser luminotron, infrared laser light beam, off-axis fan-shaped curtain.Described multiple identified surface infrared laser curtain device also comprises the method that forms surperficial infrared laser curtain and stop laser beam to leak outside.
2. according to the described infrared laser curtain of claim 1, it is characterized in that; Described infrared laser curtain is used for carrying out the light shooting and forming the infrared light spot image from different orientation to the finger of multiple operation, and described infrared laser curtain is positioned at transmissive display curtain upper surface.
3. according to the described laser curtain of claim 1 transmitter, it is characterized in that; Described laser curtain transmitter, be used for the emission forward of laser and beam of laser light formed before the alignment expansion light and according to having formed an off-axis fan-shaped curtain, described laser curtain transmitter be positioned at the infrared laser luminotron foremost and be fixed on the heat dissipation metal housing, it is curved circular that it is shaped as first quarter moon.
4. according to the described infrared laser luminotron of claim 1 claim 3, it is characterized in that; Described infrared laser luminotron is used for the generation of infraluminescence and laser beam, is positioned at the back of generating laser, and it is shaped as cylindrical.
5. according to the described infrared laser light beam of claim 1, it is characterized in that; Described laser beam, the laser light path that is used for infrared laser curtain transmitter is supplied with, and described laser beam is between lasing fluorescence pipe and infrared laser curtain transmitter, and its form shape shows as a branch of invisible infrared light.
6. according to expanding light before the described alignment of claim 3, it is characterized in that; Expansion light is used for the infrared curtain covering and generation of transmissive display scene plot face before the described alignment, be positioned at transmissive display curtain upper surface, and and transmission display surface screen between the spacing of 1-2mm is arranged, its form shape shows as an invisible infrared light off-axis fan-shaped curtain.
7. according to the described off-axis fan-shaped of claim 1 claim 3 claim 6 curtain, it is characterized in that; Described off-axis fan-shaped curtain is also hidden fixing at transmissive display scene plot face by symmetrical stationary installation clamper by a plurality of infrared laser curtain devices, form before the multi-faceted alignment expansion light and according to established off-axis fan-shaped laser curtain, be used for the transmissive display scene plot and arrange, and form the complete invisible infrared laser curtain that can cover whole transmissive display curtain upper surface in the face of claiming.
8. according to surperficial infrared laser curtain of the described formation of claim 1 and the method that stops laser beam to leak outside, its characterization method comprises; Surperficial infrared laser curtain of described formation and the method that stops laser beam to leak outside, four corners that laid respectively at transmissive display curtain upper surface by a plurality of multiple identified surface infrared laser curtain devices are by symmetrical stationary installation clamper and hiding fixing, and form multiple identified surface infrared laser curtain device mutually from different angle symmetry shooting scanning, expand light before the alignment that multiple identified surface infrared laser curtain device is produced and cover shooting scanning respectively with the off-axis fan-shaped at transmissive display scene plot face, and the spacing of 1-2mm is arranged between maintenance and the transmission display surface screen, its form shape shows as an invisible infrared laser curtain.Described symmetrical stationary installation is fixed on the both sides of transmissive display curtain upper surface and is raised in transmissive display scene plot face and the laser curtain, stops that laser beam leaks outside, and forms the complete laser curtain of a safety.
9. according to the described according to Claim 8 symmetrical stationary installation of claim 7, it is characterized in that; Described symmetrical stationary installation is used for the hiding fixedly clamper of laser curtain emitter and stops laser beam to leak outside, and is positioned at the upper surface both sides and the projection of transmissive display curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101579082A CN101957688A (en) | 2009-07-16 | 2009-07-16 | Method and device for multiply identifying surface infrared laser curtains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101579082A CN101957688A (en) | 2009-07-16 | 2009-07-16 | Method and device for multiply identifying surface infrared laser curtains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101957688A true CN101957688A (en) | 2011-01-26 |
Family
ID=43485048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101579082A Pending CN101957688A (en) | 2009-07-16 | 2009-07-16 | Method and device for multiply identifying surface infrared laser curtains |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101957688A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076983A (en) * | 2013-01-28 | 2013-05-01 | 中国科学技术大学 | Touch screen man-machine interactive system based on laser projection |
| CN108883438A (en) * | 2016-01-11 | 2018-11-23 | 欧佩克斯公司 | Equipment for treating materials with delivery vehicle |
| CN109002232A (en) * | 2018-08-10 | 2018-12-14 | 贵州华宁科技股份有限公司 | Anti-interference infrared touching device |
| CN109059664A (en) * | 2018-07-11 | 2018-12-21 | 速得尔科技（北京）有限公司 | A kind of overlapping combinations light curtain electronics target system |
| CN110412612A (en) * | 2019-08-01 | 2019-11-05 | 中誉装备科技(广东)有限公司 | A kind of seamless laser curtain splicing |
-
2009
- 2009-07-16 CN CN2009101579082A patent/CN101957688A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076983A (en) * | 2013-01-28 | 2013-05-01 | 中国科学技术大学 | Touch screen man-machine interactive system based on laser projection |
| CN103076983B (en) * | 2013-01-28 | 2015-09-09 | 中国科学技术大学 | A kind of touch-screen man-machine interactive system based on laser projection |
| CN108883438A (en) * | 2016-01-11 | 2018-11-23 | 欧佩克斯公司 | Equipment for treating materials with delivery vehicle |
| CN108883438B (en) * | 2016-01-11 | 2021-02-26 | 欧佩克斯公司 | Material handling apparatus with a vehicle |
| CN109059664A (en) * | 2018-07-11 | 2018-12-21 | 速得尔科技（北京）有限公司 | A kind of overlapping combinations light curtain electronics target system |
| CN109002232A (en) * | 2018-08-10 | 2018-12-14 | 贵州华宁科技股份有限公司 | Anti-interference infrared touching device |
| CN109002232B (en) * | 2018-08-10 | 2021-05-07 | 贵州华宁科技股份有限公司 | Anti-interference infrared touch device |
| CN110412612A (en) * | 2019-08-01 | 2019-11-05 | 中誉装备科技(广东)有限公司 | A kind of seamless laser curtain splicing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6870671B2 (en) | Flat-panel display | |
| CN101957688A (en) | Method and device for multiply identifying surface infrared laser curtains | |
| CN206863212U (en) | The Laser Radar Scanning device of multi-emitting light source | |
| RU2013128536A (en) | SYSTEM AND METHOD OF MULTI-TOUCH INTERACTION AND CAMERA BACKLIGHT | |
| CN206975215U (en) | A kind of laser radar apparatus | |
| JP2007141811A (en) | Backlight unit, and liquid crystal display device using it | |
| CN103913796B (en) | Light guide plate, backlight module and transparent displayer | |
| CN107407818A (en) | The display device of directionality control with output and backlight and light directing method for this display device | |
| US20020126086A1 (en) | Display apparatus | |
| CN204390219U (en) | Input interface projection structure and have the electronic installation of this projection structure | |
| CN106170731A (en) | Electronic equipment | |
| WO2020237923A1 (en) | Display panel, display method, and display system | |
| CN102401287A (en) | Backlight module | |
| CN104460209B (en) | A kind of structure and its LCOS for showing ray machine shows means of illumination | |
| CN101620485B (en) | Device and method for positioning light source | |
| CN101957686A (en) | Leading-in transparent infrared window multiple touch screen device and method | |
| CN102425740A (en) | Backlight module and display device | |
| CN105785696A (en) | System for improving luminance of laser scanning projection image | |
| CN105607405A (en) | Projection screen | |
| CN105223642A (en) | Light guide plate | |
| CN202771400U (en) | Optical touch screen changing transmission path of lights | |
| CN101175224B (en) | Method and system for implementing solid video picture in air | |
| JP4674581B2 (en) | Image forming apparatus and method | |
| CN102436331A (en) | Optical engine for infrared touch screen | |
| CN116457719A (en) | Space suspension image display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110126 |