CN201892790U - Microarray type laser scanning protection device - Google Patents
Microarray type laser scanning protection device Download PDFInfo
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- CN201892790U CN201892790U CN2010205882509U CN201020588250U CN201892790U CN 201892790 U CN201892790 U CN 201892790U CN 2010205882509 U CN2010205882509 U CN 2010205882509U CN 201020588250 U CN201020588250 U CN 201020588250U CN 201892790 U CN201892790 U CN 201892790U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
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- 238000004088 simulation Methods 0.000 claims description 3
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- 230000004304 visual acuity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000003709 image segmentation Methods 0.000 description 4
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Abstract
The utility model relates to a microarray type laser scanning protection device, comprising a video splitting module, a video conversion module, a laser light source module, a laser drive modulation module, an analog microscope module, a microscanning mirror control module and a screen, wherein the output end of the video splitting module is connected with the input end of the video conversion module; the output end of the video conversion module is respectively connected with the input ends of the laser drive modulation module and the microscanning mirror control module; the output of the laser drive modulation module is connected with the input end of a laser power supply module; the output end of the microscanning mirror control module is connected with the input end of an analog microscanning mirror; and laser emitted from the laser light source module is projected on a movable reflecting mirror surface of the MEMS (micro-electromechanical system) microscanning mirror, and is projected on the screen after being reflected by the movable reflecting mirror surface. In the microarray type laser scanning protection device, the structure is simple, the operation is simple and convenient, and a microscanning projection device in the prior art is smartly utilized, so that the effects of high resolution and large-screen projection for high-definition programs are realized.
Description
Technical field
The utility model relates to a kind of laser scanning projection device, particularly a kind of miniature array laser scanning projection device.
Background technology
At present, based on the laser scanning micro projection equipment of MEMS (Microelectromechanical Systems, MEMS (micro electro mechanical system)) micro scanning mirror and LASER Light Source, it is little to have a volume, and the brightness height such as need not focus at advantage, tentatively is applied.
Wherein, a used core component is exactly the MEMS micro scanning mirror that is used for two dimensional laser scanning, and it comprises movable catoptron and makes the actuator (Actuator) of catoptron around X-axis and Y-axis high-speed rotation.Its structure has two kinds usually: (1) single twin shaft micro scanning mirror that universal joint (Gimbal) is arranged or do not have universal joint (Gimbal-less), comprise that a short scan axle (X-axis) is used for line scanning and a slow scanning axle (Y-axis) is used for field scan, two axles are mutually orthogonal; (2) two single shaft micro scanning mirrors, one of them scanning mirror are responsible for line scanning (being X-axis scanning), and it is realized finishing by fast-loop driver; The single shaft micro scanning mirror that another quadrature is placed is finished slower field scan (Y-axis scanning).
At present, the laser scanning micro projection equipment limit that can reach is: the resolution of VGA (640X480) or WVGA (848X480) and the refresh rate (field-scanning period) of 60Hz.The resolution of image and refresh rate mainly are subjected to the restriction of the line-scanning frequency and the laser modulation frequency of micro scanning mirror, in general, the sweep frequency of micro scanning mirror is high more, its scanning angle is more little, this just means, in the nearer application scenario of distance screen, can't obtain enough big projected image.Along with popularizing of giant-screen, resolution is 1080p (1920X1080) @60Hz and 720p (the high definition program emerge in multitude of 1280X720) @60Hz, existing mini laser scanning projector equipment can't satisfy people to high resolving power, the demand of large screen projection, for example, in order to satisfy 1080p (1920X1080) @60Hz, the line-scanning frequency of the micro scanning mirror of mini laser scanning projector equipment need reach 64.8KHz, the modulating frequency of its laser instrument need reach when 1080p and be about 124.4MHz, when 720p, also to reach 55.3MHz, under high like this sweep frequency and modulating frequency, not only the micro scanning mirror is difficult to obtain enough big practical scanning angle when scanning, for microlaser, also reached the technological limit of its modulating frequency simultaneously.The laser scanning micro projection equipment of prior art is that (1920X1080) @60Hz and 720p (when the high definition program of 1280X720) @60Hz carries out projection imaging, can't realize 1080p to resolution.How to utilize the device of existing scientific and technological level, adopt laser scanning micro projection equipment, realize high resolving power, large screen projection, become the problem that people need solution badly.
The utility model content
The purpose of this utility model just provides a kind of array laser scanning micro projector, utilizes the miniscanning projection device of prior art level, realizes high resolving power, large screen projection.
For achieving the above object, the utility model adopts technical scheme to be: it comprises the Video Segmentation module, video conversion module, laser light source module, the Laser Driven modulation module, the analog micromirror module, micro scanning mirror control module and screen, Video Segmentation module output terminal is connected with the video conversion module input end, the video conversion module output terminal is connected with the input end of Laser Driven modulation module with micro scanning mirror control module respectively, the output terminal of Laser Driven modulation module is connected with the input end of laser power supply module, the output terminal of micro scanning mirror control module is connected with the input end of simulation micro scanning mirror, the laser projections that laser light source module sends is on the moving reflector face of MEMS micro scanning mirror, after the reflection of moving reflector face, be incident upon on the screen;
Described Video Segmentation module is used for source images is divided into 2*2 small video or image, and described small video or little image are pairing to be the image that is positioned at original image the 1st, 2,3,4 quadrants;
Described video conversion module is used to receive divided small video or little image, and the vision signal that becomes the small video that receives or little image transitions Laser Drive modulation circuit and micro scanning mirror control circuit to discern and to control; It is made of four video conversion circuits, and each video conversion circuit is responsible for receiving the vision signal of the small video or the little image of a quadrant, and transmits this vision signal simultaneously and give Laser Driven modulation module and micro scanning mirror control module.
Described Laser Driven modulation module is used to accept the vision signal from video conversion module output, is used for controlling the laser instrument in the laser light source module; It is corresponding with four video conversion circuits in the video conversion module respectively by four Laser Driven modulation circuits, and each Laser Driven modulation circuit only is responsible for receiving the vision signal that the video conversion circuit corresponding with it sent;
Described laser light source module is finished laser projections work according to the drive control signal of Laser Driven modulation module, it is to be the laser constitution that the 2*2 array way is arranged by four, each laser instrument is corresponding one by one with described Laser Driven modulation circuit, only finishes laser projections work according to the drive control signal of corresponding Laser Driven modulation circuit;
Described micro scanning mirror control module is used to receive the vision signal of sending from video conversion module, and carries out scanning work according to obtaining vision signal control micro scanning mirror module; It is to be made of four micro scanning mirror control circuits, and is corresponding one by one with described video conversion circuit;
Described analog micromirror module realizes line scanning and field scan according to the control command of micro scanning mirror control module, and it is made up of four monolithic MEMS micro scanning mirrors that are the arrangement of 2*2 array way; The corresponding micro scanning mirror control circuit of each monolithic MEMS micro scanning mirror is used to finish the scanning of institute's respective quadrants image or video.
Principle of work of the present utility model is such: the image segmentation module is divided into a sub-picture the little image that is positioned at four quadrants, the image of each quadrant is all distinguished corresponding one group of miniscanning equipment independently, every group independently miniscanning equipment finish separately scanning work, at last with image projection on a big screen; We are that example is done concrete elaboration with the video of a 1920x1080@60Hz, video for a 1920x1080@60Hz, at first can be become the small video of 4 960x540@60Hz by the image segmentation module segmentation, this is the 1st, 2,3,4 quadrants that four small videos lay respectively at image, the resolution of the small video of each quadrant and refresh rate are such: each small video all has 540 horizontal scanning lines, every horizontal scanning line comprises 960 points, so the Laser Modulation frequency of each small video is 540x960x60=31.104MHz; For each monolithic MEMS micro scanning mirror, the sweep frequency of its line scanning only is required to be the sawtooth wave of 540x60=32.4KHz, and its sweep frequency is the sawtooth wave of 60Hz.From above-mentioned data as can be known, with respect to each small video, the mini laser scanning device of prior art is enough to satisfy the projection demand.Therefore even under the very near situation of space length, adopt mini laser scanning projector equipment described in the utility model, also can realize the drop shadow effect of high resolving power, giant-screen.Because in the analog micromirror module of the present utility model, the gap between per two monolithic MEMS micro scanning mirrors is very little, when being incident upon on the screen, therefore the actual gap between four quadrantal diagram pictures can ignore less than 1mm, does not influence imaging effect.Complete machine works together actual just as four platform independent but the little projector of synchronous working.
The utility model has following advantage owing to adopted technique scheme:
1, utilizes the miniscanning projection device and the laser instrument of prior art level, realized high resolving power, large screen projection;
2, reduced the miniscanning projection device of prior art level and the performance requirement of laser instrument;
3, simple in structure, easy and simple to handle, be easy to realize.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
The synoptic diagram that Fig. 2 scans under the sawtooth wave drive waveforms for the utility model;
The sawtooth wave oscillogram that Fig. 3 adopts for the utility model;
The synoptic diagram that Fig. 4 scans under the triangular wave drive waveforms for the utility model;
Fig. 5 is the triangular wave oscillogram that the utility model adopted;
Fig. 6 is a structured flowchart of the present utility model;
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples: shown in Fig. 1-6, it comprises Video Segmentation module 1, video conversion module 2, laser light source module 3, Laser Driven modulation module 4, analog micromirror module 6, micro scanning mirror control module 5 and screen 7, Video Segmentation module 1 output terminal is connected with video conversion module 2 input ends, video conversion module 2 output terminals are connected with the input end of Laser Driven modulation module 4 with micro scanning mirror control module 5 respectively, the output terminal of Laser Driven modulation module 4 is connected with the input end of laser power supply module 3, the output terminal of micro scanning mirror control module 5 is connected with the input end of simulation micro scanning mirror 6, the laser projections that laser light source module 3 sends is on the moving reflector face of MEMS micro scanning mirror 9, after the reflection of moving reflector face, be incident upon on the screen;
Described Video Segmentation module 1 is used for source images is divided into 2*2 small video or image, and described small video or little image are pairing to be the image that is positioned at original image the 1st, 2,3,4 quadrants;
Described video conversion module 2 is used to receive divided small video or little image, and the vision signal that becomes the small video that receives or little image transitions Laser Drive modulation circuit and micro scanning mirror control circuit to discern and to control; It is made of four video conversion circuits, and each video conversion circuit is responsible for receiving the vision signal of the small video or the little image of a quadrant, and transmits this vision signal simultaneously and give Laser Driven modulation module 4 and micro scanning mirror control module 5.
Described Laser Driven modulation module 4 is used to accept the vision signal from video conversion module output, is used for controlling the laser instrument in the laser light source module; It is corresponding with four video conversion circuits in the video conversion module respectively by four Laser Driven modulation circuits, and each Laser Driven modulation circuit only is responsible for receiving the vision signal that the video conversion circuit corresponding with it sent;
Described laser light source module 3 is finished laser projections work according to the drive control signal of Laser Driven modulation module 4, it is made up of four laser instruments 8 that are the arrangement of 2*2 array way, each laser instrument 8 is corresponding one by one with described Laser Driven modulation circuit, only finishes laser projections work according to the drive control signal of corresponding Laser Driven modulation circuit;
Described micro scanning mirror control module 5 is used to receive the vision signal of sending from video conversion module, and carries out scanning work according to obtaining vision signal control micro scanning mirror module; It is to be made of four micro scanning mirror control circuits, and is corresponding one by one with described video conversion circuit;
Described analog micromirror module 6 realizes line scanning and field scan according to the control command of micro scanning mirror control module, and it is made up of four monolithic MEMS micro scanning mirrors that are the arrangement of 2*2 array way; Each monolithic MEMS micro scanning mirror 9 corresponding micro scanning mirror control circuit is used to finish the scanning of institute's respective quadrants image or video.
Principle of work of the present utility model is such: image segmentation module 1 is divided into a sub-picture the little image that is positioned at four quadrants, the image of each quadrant is all distinguished corresponding one group of miniscanning equipment independently, every group independently miniscanning equipment finish separately scanning work, at last with image projection on a big screen; We are that example is done concrete elaboration with the video of a 1920x1080@60Hz, video for a 1920x1080@60Hz, at first can be become the small video of 4 960x540@60Hz by the image segmentation module segmentation, this is the 1st, 2,3,4 quadrants that four small videos lay respectively at image, the resolution of the small video of each quadrant and refresh rate are such: each small video all has 540 horizontal scanning lines, every horizontal scanning line comprises 960 points, so the Laser Modulation frequency of each small video is 540x960x60=31.104MHz; For each monolithic MEMS micro scanning mirror, the sweep frequency of its line scanning only is required to be the sawtooth wave of 540x60=32.4KHz, and its sweep frequency is the sawtooth wave of 60Hz.From above-mentioned data as can be known, with respect to each small video, the mini laser scanning device of prior art is enough to satisfy the projection demand.Therefore even under the very near situation of space length, adopt mini laser scanning projector equipment described in the utility model, also can realize the drop shadow effect of high resolving power, giant-screen.Because in the analog micromirror module of the present utility model, the gap between per two monolithic MEMS micro scanning mirrors is very little, when being incident upon on the screen, therefore the actual gap between four quadrantal diagram pictures can ignore less than 1mm, does not influence imaging effect.Complete machine works together actual just as four platform independent but the little projector of synchronous working.
Monolithic MEMS micro scanning mirror described in the utility model is provided with a transverse axis and a vertical axes, moving reflector face on the micro scanning mirror control circuit control MEMS micro scanning mirror carries out deflection around transverse axis and vertical axes, when moving reflector face during around transverse axis deflection, realize line scanning, when moving reflector face during, realize field scan around vertical axes deflection.
The mechanical deflection angle of moving reflector face described in the utility model is (0-45) degree.
Angle between the center line of analog micromirror module described in the utility model and the center line of laser light source module is greater than 0 degree and less than 90 degree.
Angle between the center line of analog micromirror module described in the utility model and the center line of laser light source module is 35 degree-55 degree.
Angle between the center line of analog micromirror module described in the utility model and the center line of laser light source module is 40 degree-50 degree.
Angle between the center line of analog micromirror module described in the utility model and the center line of laser light source module is 45 degree.The center line of analog micromirror module and the center line of laser light source module angle at 45.The laser projections that laser light source module sends is on the moving reflector of analog micromirror module, and being reflected is incident upon on the screen after 90 °.
Driving ripple in the micro scanning mirror control circuit described in the utility model is sawtooth wave or triangular wave.
Each laser instrument comprises red, green, blue three look laser instruments and is used to finish the optical element that beam collimation focused on and closed bundle.
The monolithic MEMS micro scanning mirror of miniature array described in the utility model laser scanning projection device is provided with a transverse axis and a vertical axes, moving reflector face on the micro scanning mirror control module control MEMS micro scanning mirror carries out deflection around transverse axis and vertical axes, when moving reflector face during around transverse axis deflection, realize line scanning, when moving reflector face during, carry out field scan around vertical axes deflection; The mechanical deflection angle of described moving reflector face is that 0 degree is to 45 degree.
As shown in Figure 3: the micro scanning mirror control module in the micro scanning mirror control module adopts the sawtooth wave waveform to drive the transverse axis and the vertical axes of MEMS micro scanning mirror, wherein X passage is the line scanning passage, promptly drive transverse axis deflection, make monolithic MEMS micro scanning mirror finish horizontal line scanning, the Y passage is the field scan passage, promptly drive vertical axes deflection, make monolithic MEMS micro scanning mirror finish field scan.Sawtooth wave drive waveforms with the MEMS micro scanning mirror that scans second quadrant is an example, and during no drive signal, the incident point of MEMS micro scanning mirror is positioned at the true origin position of screen.After applying drive signal, the projection light of being responsible for the MEMS micro scanning mirror of scanning second quadrant at first is positioned at the upper left side of each quadrant, and along with the deflection of the movable reflecting surface of MEMS micro scanning mirror gradually to the scanning of the upper right side of screen, when finishing delegation's horizontal scanning, the incident point of monolithic MEMS micro scanning mirror can be got back to the left side of screen fast, and under the effect of Y channels drive signal, move down a fragment position, starting point as next bar horizontal scanning line, so repeatedly, until the finishing image scanning of this quadrant.
Shown in Fig. 4-5, MEMS micro scanning mirror adopts the triangular voltage sweep synoptic diagram; Wherein Fig. 5 is the triangular wave drive waveforms of monolithic MEMS micro scanning mirror, and wherein X passage is the line scanning passage, and the Y passage is the field scan passage.We are that example is set forth with the MEMS micro scanning mirror of being responsible for scanning II quadrant, during no drive signal, and the true origin position of the projection light sensing screen of MEMS micro scanning mirror.After applying drive signal, the micro scanning mirror at first points to the upper left side of second quadrant of screen, finishes the horizontal scanning of first row from left to right; After finishing a horizontal scanning line, under the driving of sweep signal on the scene, the moving reflector face of micro scanning mirror is around vertical axes deflection, make the luminous point that is incident upon on the screen move down a position, as the sweep starting point of next line, this moment, MEMS at the uniform velocity was reversed the horizontal scanning (from right to left promptly) of the second row pixel, when the micro scanning mirror is finished the second sweep trace, and get back to screen when left side, the forward scan (from left to right) of beginning the third line.So go round and begin again.Like this, the line-scanning frequency of MEMS micro scanning mirror reduces half under triangular wave drives.
Video Segmentation module of the present utility model can adopt software to realize, also can adopt hardware to realize, has belonged to prior art, so this is not repeated the utility model again.
Claims (8)
1. miniature array laser scanning projection device, it is characterized in that: it comprises the Video Segmentation module, video conversion module, laser light source module, the Laser Driven modulation module, the analog micromirror module, micro scanning mirror control module and screen, Video Segmentation module output terminal is connected with the video conversion module input end, the video conversion module output terminal is connected with the input end of Laser Driven modulation module with micro scanning mirror control module respectively, the output terminal of Laser Driven modulation module is connected with the input end of laser power supply module, the output terminal of micro scanning mirror control module is connected with the input end of simulation micro scanning mirror, the laser projections that laser light source module sends is on the moving reflector face of MEMS micro scanning mirror, after the reflection of moving reflector face, be incident upon on the screen;
Described Video Segmentation module is used for source images is divided into 2*2 small video or image, and described small video or little image are pairing to be the image that is positioned at original image the 1st, 2,3,4 quadrants;
Described video conversion module is used to receive divided small video or little image, and the vision signal that becomes the small video that receives or little image transitions Laser Drive modulation circuit and micro scanning mirror control circuit to discern and to control; It is made of four video conversion circuits, and each video conversion circuit is responsible for receiving the vision signal of the small video or the little image of a quadrant, and transmits this vision signal simultaneously and give Laser Driven modulation module and micro scanning mirror control module;
Described Laser Driven modulation module is used to accept the vision signal from video conversion module output, is used for controlling the laser instrument in the laser light source module; It is corresponding with four video conversion circuits in the video conversion module respectively by four Laser Driven modulation circuits, and each Laser Driven modulation circuit only is responsible for receiving the vision signal that the video conversion circuit corresponding with it sent;
Described laser light source module is finished laser projections work according to the drive control signal of Laser Driven modulation module, it is to be the laser constitution that the 2*2 array way is arranged by four, each laser instrument is corresponding one by one with described Laser Driven modulation circuit, only finishes laser projections work according to the drive control signal of corresponding Laser Driven modulation circuit;
Described micro scanning mirror control module is used to receive the vision signal of sending from video conversion module, and carries out scanning work according to obtaining vision signal control micro scanning mirror module; It is to be made of four micro scanning mirror control circuits, and is corresponding one by one with described video conversion circuit;
Described analog micromirror module realizes line scanning and field scan according to the control command of micro scanning mirror control module, and it is made up of four monolithic MEMS micro scanning mirrors that are the arrangement of 2*2 array way; The corresponding micro scanning mirror control circuit of each monolithic MEMS micro scanning mirror is used to finish the scanning of institute's respective quadrants image or video.
2. miniature array as claimed in claim 1 laser scanning projection device, it is characterized in that: described monolithic MEMS micro scanning mirror is provided with a transverse axis and a vertical axes, moving reflector face on the micro scanning mirror control circuit control MEMS micro scanning mirror carries out deflection around transverse axis and vertical axes, when moving reflector face during around transverse axis deflection, realize line scanning, when moving reflector face during, realize field scan around vertical axes deflection.
3. miniature array as claimed in claim 2 laser scanning projection device, its feature exists: the mechanical deflection angle of described moving reflector face is the 0-45 degree.
4. as claim 1,2 or 3 described arbitrary miniature array laser scanning projection devices, it is characterized in that: the angle between the center line of described analog micromirror module and the center line of laser light source module is greater than 0 degree and less than 90 degree.
5. miniature array as claimed in claim 4 laser scanning projection device is characterized in that: the angle between the center line of described analog micromirror module and the center line of laser light source module is that 35 degree are to 55 degree.
6. miniature array as claimed in claim 4 laser scanning projection device is characterized in that: the angle between the center line of described analog micromirror module and the center line of laser light source module is 40 degree-50 degree.
7. miniature array as claimed in claim 4 laser scanning projection device is characterized in that: the angle between the center line of described analog micromirror module and the center line of laser light source module is 45 degree.
8. as claim 1,2 or 3 described miniature array laser scanning projection devices, it is characterized in that: the driving ripple in the described micro scanning mirror control circuit is sawtooth wave or triangular wave.
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| CN2010205882509U CN201892790U (en) | 2010-11-03 | 2010-11-03 | Microarray type laser scanning protection device |
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| CN2010205882509U CN201892790U (en) | 2010-11-03 | 2010-11-03 | Microarray type laser scanning protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573023A (en) * | 2015-11-25 | 2016-05-11 | 全普光电科技(上海)有限公司 | Multi-MEMS laser projection device and method |
| WO2023050940A1 (en) * | 2021-09-30 | 2023-04-06 | 青岛海信激光显示股份有限公司 | Laser projection apparatus, projection display system, and projection display method |
-
2010
- 2010-11-03 CN CN2010205882509U patent/CN201892790U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105573023A (en) * | 2015-11-25 | 2016-05-11 | 全普光电科技(上海)有限公司 | Multi-MEMS laser projection device and method |
| WO2023050940A1 (en) * | 2021-09-30 | 2023-04-06 | 青岛海信激光显示股份有限公司 | Laser projection apparatus, projection display system, and projection display method |
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Owner name: NYMPH (TIANJIN) TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XU YINGSHUN Effective date: 20110726 |
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Free format text: CORRECT: ADDRESS; FROM: 300221 25-2-301, JINGGUAN GARDEN, HEXI DISTRICT, TIANJIN TO: 300384 NO. 235, ACCESSORIAL BUILDING OF TORCH BUILDING, NO. 2, HUATIAN ROAD, HUAYUAN INDUSTRIAL PARK, TIANJIN HIGH-TECH. ZONE |
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Effective date of registration: 20110726 Address after: 300384 Tianjin Huayuan Industrial Park high tech Zone 2 Alex Hua Tian Road, Torch Hotel, auxiliary building No. 235 Patentee after: Nymph (Tianjin) Technology Co., Ltd. Address before: 300221 Tianjin Hexi District landscape garden 25-2-301 Patentee before: Xu Yingshun |
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Granted publication date: 20110706 Termination date: 20121103 |