CN202669659U - Car backseat projection display system - Google Patents
Car backseat projection display system Download PDFInfo
- Publication number
- CN202669659U CN202669659U CN 201220118626 CN201220118626U CN202669659U CN 202669659 U CN202669659 U CN 202669659U CN 201220118626 CN201220118626 CN 201220118626 CN 201220118626 U CN201220118626 U CN 201220118626U CN 202669659 U CN202669659 U CN 202669659U
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- laser
- control circuit
- display system
- backseat
- source module
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Abstract
A car backseat projection display system utilizes a miniature laser projection device to replace a traditional liquid crystal display. The car backseat projection display system comprises the miniature laser projection device and a foldable screen. The miniature laser projection device comprises a laser light-source module, a control circuit and a miniature scanning device. The input end of the control circuit is connected with a video output interface of a car driving computer, and the control circuit receives video signals provided by the car driving computer. The input end of the laser light-source module is connected with an output end of the control circuit, and the laser light-source module receives high-speed modulation signals sent by the control circuit. The laser light-source module outputs red, green and blue lasers, and the lasers are projected on a reflecting mirror of the miniature scanning device which conducts scanning at high speed and are reflected on the foldable screen. The car backseat projection display system has the advantages of being small in size, light in weight, wide in color gamut, high in contrast ratio, large in visual range, free of focusing lenses and the like.
Description
Technical field
This patent relates to a kind of automotive backseat projection display system.This system adopts micro-scale laser projection device, is used for replacing traditional Liquid Crystal Display.
Background technology
The passenger is for the back seat amusement function proposition requirements at the higher level of modern automobile in recent years, and therefore above car or the SUV of middle rank often is used for providing information to show the functions such as video playback for rear rider provides independent or shared Liquid Crystal Display.Fast-developing micro-scale laser projection device is owing to adopt the redgreenblue laser to make light source in recent years, compare with traditional Liquid Crystal Display, (laser projection is 200%NTSC standard gamut range to have the colour gamut broadness, liquid crystal display is about 75%NTSC standard gamut range), high-contrast, high saturation, therefore the advantages such as low-power consumption are fit to replace Liquid Crystal Display and are used for the back seat display system very much.
The utility model content
Technical problem to be solved in the utility model is to realize a kind of automotive backseat projection display system based on micro-scale laser projection device, is used for replacing traditional Liquid Crystal Display.
For achieving the above object, the utility model adopts technical scheme to be: automotive backseat projection display system comprises micro-scale laser projection device and folding screen.The input end of described micro-scale laser projection device links to each other with the signaling interface of running computer.Described micro-scale laser projection device is incident upon image or video on the folding screen.
Described micro-scale laser projection device comprises laser light source module, control circuit and miniscanning device; The input end of control circuit links to each other with the video output interface of running computer, receives the vision signal that the running computer provides; The input end of laser light source module links to each other the High Speed Modulation signal that reception control circuit sends with a mouth of control circuit; Laser light source module output redgreenblue laser is projected on the catadioptre of miniscanning device of high-velocity scanning, and reflexes on the folding screen; Another mouth of control circuit links to each other with the input end of miniscanning device, and the electronic control signal control miniscanning device that control circuit produces is finished high-velocity scanning.
Described laser light source module comprises each one in RGB look laser that can High Speed Modulation and collimates/close the beam optics system.The wavelength of red laser is 635nm to 642nm, can be red laser diode; The wavelength of green laser is 515nm to 532nm, is green laser or the green laser diode based on secondary harmonizing wave multiple frequency technology (Second Harmonic Generation, SHG); The wavelength of blue laser is 515nm to 532nm, is blue laser diode.Collimate/close each one group of the collimating lens that the beam optics system comprises corresponding RGB look laser, after 2 of dichroscope filters or 3X1 fiber coupling device (Fiber Coupler or Combiner) are used for collimate red/green/blue laser synthesizes beam of laser.
Described control circuit can be accepted the vision signal of running computer and be converted into the RGB digital signal and row/field sync signal is carried out high speed two-dimension scanning with High Speed Modulation laser light source module and control miniscanning device.
Described miniscanning device is for being used for MEMS (the Microelectromechanical Systems of two dimensional laser scanning, MEMS) micro scanning mirror, it comprises movable catadioptre and makes catadioptre around the actuator (Actuator) of X-axis and Y-axis high speed rotating.Its structure has two kinds usually: (1) single to have universal-joint (Gimbal) or without the twin shaft micro scanning mirror of universal-joint (Gimbal-less), comprise that a short scan axle (X-axis) is used for line scanning and a slow sweep axle (Y-axis) is used for field scan, two axles are mutually orthogonal; (2) two single shaft micro scanning mirrors, one of them scan 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).The scan mode of MEMS micro scanning mirror can be lined by line scan for two-way, namely scans from left to right in odd-numbered line, and even number line scans from right to left; Or two-way staggered scanning, namely scan from left to right in the first row, the third line scans from right to left, fifth line scans from left to right, by that analogy, begins to scan from left to right at the second row after finishing odd field scanning, fourth line scans from right to left, the 6th row scans from left to right, by that analogy, and to finish even field scanning.
Described folding screen is used for receiving image or the video that micro-scale laser projection device throws.Folding screen is positioned at the rear portion of front-row seats of vehicle, or the rear portion of armrest box between the front-row seats of vehicle, or the car body top between the automobile front and rear row.
The utility model has following advantage owing to adopted technique scheme:
1, show that colour gamut is wide, contrast ratio is high, and degree of saturation specific humidity is high, and is low in energy consumption;
2, volume little, lightweight, simple in structure, be easy to realize;
3, need not condenser lens.
Description of drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is scheme drawing of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing 1 and embodiment: as shown in Figure 1, it comprises micro-scale laser projection device 1 and folding screen 2.Wherein micro-scale laser projection device 1 comprises laser light source module 11, control circuit 12 and miniscanning device 13.The input end of control circuit 12 links to each other with the video output interface of running computer 3, receives the vision signal that running computer 3 provides.The input end of laser light source module 11 links to each other the High Speed Modulation signal that reception control circuit 12 sends with a mouth of control circuit 12.Laser light source module 11 output redgreenblue laser are projected on the catadioptre of miniscanning device 13 of high-velocity scanning, and reflex on the folding screen 2.Another mouth of control circuit 12 links to each other with the input end of miniscanning device 13, and the electronic control signal control miniscanning device 13 that control circuit 12 produces is finished high-velocity scanning.
Described micro-scale laser projection device 1 comprises laser light source module 11, control circuit 12 and miniscanning device 13.Produce redgreenblue laser by laser light source module 11, be transferred to miniscanning device 13 by optical system, and reflex on the folding screen 2.Control circuit 12 is accepted the vision signal of running computer 3 and is converted into the RGB digital signal and row/field sync signal is carried out high speed two-dimension scanning with High Speed Modulation laser light source module 11 and control miniscanning device 13.Micro-scale laser projection device 1 can be positioned at automobile rear car body top or automobile rear seat center armrest.
Described laser light source module 11 comprise can High Speed Modulation red/each one of green/blue laser and collimate/close the beam optics system.The wavelength of red laser is generally 635nm to 642nm, can be red laser diode; The wavelength of green laser is generally 515nm to 532nm, can be green laser or the green laser diode based on the secondary harmonizing wave multiple frequency technology; The wavelength of blue laser is generally 515nm to 532nm, can be blue laser diode.Collimate/close the beam optics system comprise corresponding red/each one group of the collimating lens of green/blue laser, after 2 of dichroscope filters or 3X1 fiber coupling device are used for collimate red/green/blue laser synthesizes beam of laser.
Described control circuit 12 can be accepted the vision signal of running computer and be converted into the RGB digital signal and row/field sync signal is carried out high speed two-dimension scanning with High Speed Modulation laser light source module 11 and control miniscanning device 13.
Described miniscanning device 13 is for being used for the MEMS micro scanning mirror of two dimensional laser scanning, and it comprises movable catadioptre and makes catadioptre around the actuator of X-axis and Y-axis high speed rotating.Its structure has two kinds usually: (1) single to be had universal-joint or without the twin shaft micro scanning mirror of universal-joint, comprises that a short scan axle (X-axis) is used for line scanning and a slow sweep axle (Y-axis) is used for field scan, and two axles are mutually orthogonal; (2) two single shaft micro scanning mirrors, one of them scan 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).The scan mode of MEMS micro scanning mirror can be lined by line scan for two-way, namely scans from left to right in odd-numbered line, and even number line scans from right to left; Or two-way staggered scanning, namely scan from left to right in the first row, the third line scans from right to left, fifth line scans from left to right, by that analogy, begins to scan from left to right at the second row after finishing odd field scanning, fourth line scans from right to left, the 6th row scans from left to right, by that analogy, and to finish even field scanning.
Described folding screen 2 is used for receiving image or the video that micro-scale laser projection device 11 throws.Folding screen is positioned at the rear portion of front-row seats of vehicle, or the rear portion of armrest box between the front-row seats of vehicle, or the car body top between the automobile front and rear row.
Claims (6)
1. automotive backseat projection display system, it is characterized in that: it comprises micro-scale laser projection device and folding screen, the input end of described micro-scale laser projection device links to each other with the signaling interface of running computer, and described micro-scale laser projection device is incident upon image or video on the folding screen; Micro-scale laser projection device comprises laser light source module, control circuit and miniscanning device; The input end of control circuit links to each other with the video output interface of running computer, receives the vision signal that the running computer provides; The input end of laser light source module links to each other the High Speed Modulation signal that reception control circuit sends with a mouth of control circuit; Laser light source module output redgreenblue laser is projected on the catadioptre of miniscanning device of high-velocity scanning, and reflexes on the folding screen; Another mouth of control circuit links to each other with the input end of miniscanning device, and the electronic control signal control miniscanning device that control circuit produces is finished high-velocity scanning.
2. automotive backseat projection display system as claimed in claim 1 is characterized in that: laser light source module comprise High Speed Modulation red/each one of green/blue laser and collimate/close the beam optics system.
3. automotive backseat projection display system as claimed in claim 1, it is characterized in that: the wavelength of red laser is 635nm to 642nm, is red laser diode; The wavelength of green laser is 515nm to 532nm, is green laser or the green laser diode based on the secondary harmonizing wave multiple frequency technology; The wavelength of blue laser is 515nm to 532nm, is blue laser diode.
4. automotive backseat projection display system as claimed in claim 1 is characterized in that: collimate/close each one group of the collimating lens that the beam optics system comprises corresponding RGB laser, 2 of dichroscope filters or 3X1 fiber coupling device.
5. automotive backseat projection display system as claimed in claim 1, it is characterized in that: control circuit comprises Digital Video Processing circuit and microcontroller.
6. automotive backseat projection display system as claimed in claim 1 is characterized in that: the miniscanning device comprises movable catadioptre and makes catadioptre around the actuator of X-axis and Y-axis high speed rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118626 CN202669659U (en) | 2012-03-27 | 2012-03-27 | Car backseat projection display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118626 CN202669659U (en) | 2012-03-27 | 2012-03-27 | Car backseat projection display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202669659U true CN202669659U (en) | 2013-01-16 |
Family
ID=47490585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220118626 Expired - Fee Related CN202669659U (en) | 2012-03-27 | 2012-03-27 | Car backseat projection display system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202669659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582518A (en) * | 2012-03-27 | 2012-07-18 | 凝辉(天津)科技有限责任公司 | Automotive backseat projection display system |
-
2012
- 2012-03-27 CN CN 201220118626 patent/CN202669659U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582518A (en) * | 2012-03-27 | 2012-07-18 | 凝辉(天津)科技有限责任公司 | Automotive backseat projection display system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150327 |
|
| EXPY | Termination of patent right or utility model |