CN111624811A - Vehicle-mounted head-up display and backlight source device thereof - Google Patents
Vehicle-mounted head-up display and backlight source device thereof Download PDFInfo
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- CN111624811A CN111624811A CN202010403340.4A CN202010403340A CN111624811A CN 111624811 A CN111624811 A CN 111624811A CN 202010403340 A CN202010403340 A CN 202010403340A CN 111624811 A CN111624811 A CN 111624811A
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- 238000009792 diffusion process Methods 0.000 claims abstract description 26
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000002834 transmittance Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000005265 energy consumption Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the invention provides a vehicle-mounted head-up display and a backlight source device thereof, wherein the device comprises a plurality of LED point light sources, a plurality of free-form surface lenses and a light diffusion module, wherein the light emitting sides of the LED point light sources are arranged right opposite to an LCD display screen, the free-form surface lenses are covered on the LED point light sources in a one-to-one correspondence mode, and the light diffusion module is arranged between the free-form surface lenses and the LCD display screen, uniformly diffuses light rays emitted from the LED point light sources and then projects the light. This embodiment is through covering the free curved surface lens on the LED pointolite, carry out the plastic to the light beam that jets out from the free curved surface lens, make more light jet into to the light diffusion module, effectively promote light utilization ratio, the rethread sets up the light diffusion module between free curved surface lens and LCD display screen and will form the area source effect from the even diffusion of light that the LED pointolite sent, the homogeneity of the light that makes to throw on the LCD display screen is good, when single LED pointolite trouble and can't light or there is the light decay, it is very little to holistic light projection effect influence, ensure the display effect of LCD display screen.
Description
Technical Field
The embodiment of the invention relates to the technical field of vehicle-mounted electronic equipment, in particular to a vehicle-mounted head-up display and a backlight source device thereof.
Background
The vehicle Head-Up Display (HUD) is a virtual Display technology newly developed in recent years, and through the HUD projection system, a driver can grasp the running speed and the fuel amount prompt of an automobile by observing a windshield in a normal driving state.
The conventional HUD system generally includes an LCD display screen and a backlight device, wherein the backlight device generally employs an LED point light source and various LED lens modules covering the LED point light source. However, the LED lens directly covers the LED point light sources and is far away from the LCD display screen, which results in a low utilization rate of light energy, and when a certain LED point light source fails and cannot be lit or has light decay, the LCD display screen cannot be uniformly lit, and display defects such as dark spots are likely to occur; in addition, the conventional LED lens module generally includes a plurality of various optical lenses, and has many components and relatively troublesome assembly.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a backlight device of a vehicle-mounted head-up display, which can uniformly and effectively illuminate an LCD display screen.
A further technical problem to be solved by embodiments of the present invention is to provide a vehicle-mounted head-up display, which can uniformly and effectively illuminate an LCD display screen.
In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions: the utility model provides a backlight device of on-vehicle new line display, includes that the light-emitting side just to many LED pointolite that the LCD display screen set up, one-to-one shroud in a plurality of free curved surface lenses on many LED pointolite and set up in be used for between free curved surface lens and the LCD display screen with from throw again after the even diffusion of light that the LED pointolite sent to light diffusion module on the LCD display screen.
Furthermore, the light diffusion module is at least one anti-glare sheet which is arranged between the free-form surface lens and the LCD screen in parallel.
Further, the light diffusion module comprises two anti-glare sheets which have the same structure and are arranged between the free-form surface lens and the LCD in parallel in a layered mode, and the light-emitting surface of each anti-glare sheet is arranged to perform lambert scattering and Gaussian scattering on light.
Furthermore, the transmittance of each anti-glare sheet is more than 90%, the lambert scattering rate is 5% -10%, and the scattering angle of Gaussian scattering is 20 degrees +/-5 degrees.
Furthermore, the free-form surface lens comprises a cylinder positioned at the bottom and a free-form surface protruding from the top end of the cylinder along the axial direction, and the bottom of the cylinder is provided with an accommodating cavity recessed from the bottom end surface of the cylinder along the axial direction and used for accommodating the LED point light source.
Further, the backlight device still includes the circuit board, and is a plurality of the LED pointolite is matrix interval distribution in on the circuit board, the LED pointolite hold in hold the intracavity, follow each free-form surface lens's on the length direction's of LCD display screen the same structure on the same straight line.
Furthermore, the free-form surface lenses covering the LED point light sources are integrally formed into a lens array.
Furthermore, the backlight source device also comprises a controller which is arranged on the circuit board and used for controlling the working state of the LED point light source according to the ambient brightness.
On the other hand, in order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions: a vehicle-mounted head-up display comprises an LCD display screen and a backlight device with a light-emitting side opposite to the LCD display screen, wherein the backlight device is as claimed in any one of the preceding claims.
Furthermore, the LCD display screen comprises a frame and a liquid crystal display assembly assembled on the frame, and a shading side plate extends out of the side edge of the frame.
After the technical scheme is adopted, the embodiment of the invention at least has the following beneficial effects: according to the embodiment of the invention, the free-form surface lens covers the LED point light source, the light beam emitted from the free-form surface lens is shaped, so that more light rays can be emitted into the light diffusion module, the light utilization rate is effectively improved, and then the light rays emitted from the LED point light source are uniformly diffused by the light diffusion module arranged between the free-form surface lens and the LCD display screen to form the surface light source effect, so that the uniformity of the light rays projected onto the LCD display screen is good, when a single LED point light source fails to be lightened or has light attenuation, the influence on the whole light projection effect is small, and the display effect of the LCD display screen is ensured; in addition, part of the LED point light sources can be reasonably selected to be turned off according to the brightness of the environment, so that the energy consumption is reduced, and the heat emission of the LED point light sources is reduced.
Drawings
Fig. 1 is a schematic overall structure diagram of an alternative embodiment of the vehicle head-up display according to the present invention.
Fig. 2 is a schematic cross-sectional view of an alternative embodiment of the vehicle-mounted head-up display according to the present invention, taken along a central axis of the LCD panel in a width direction.
Detailed Description
The present application will now be described in further detail with reference to the accompanying drawings and specific examples. It should be understood that the following illustrative embodiments and description are only intended to explain the present invention, and are not intended to limit the present invention, and features of the embodiments and examples in the present application may be combined with each other without conflict.
As shown in fig. 1 and fig. 2, an optional embodiment of the present invention provides a backlight device 1 of a vehicle-mounted head-up display, including a plurality of LED point light sources 10 whose light-emitting sides are directly opposite to an LCD display screen 3, a plurality of free-form surface lenses 12 covering the plurality of LED point light sources 10 in a one-to-one correspondence manner, and a light diffusion module 14 disposed between the free-form surface lenses 12 and the LCD display screen 3 and configured to uniformly diffuse light emitted from the LED point light sources 10 and then project the light onto the LCD display screen 3.
According to the embodiment of the invention, the free-form surface lens 12 covers the LED point light source 10, the light beam emitted from the free-form surface lens 12 is shaped, so that more light rays can be emitted into the light diffusion module 14, the light utilization rate is effectively improved, and then the light rays emitted from the LED point light source 10 are uniformly diffused through the light diffusion module 14 arranged between the free-form surface lens 12 and the LCD display screen 3 to form a surface light source effect, so that the uniformity of the light rays projected onto the LCD display screen 3 is good, when a single LED point light source 10 fails to be lightened or has light attenuation, the influence on the whole light projection effect is small, and the display effect of the LCD display screen 3 is ensured; in addition, part of the LED point light sources 10 can be selected and turned off reasonably according to the brightness of the environment, so that the energy consumption is reduced, and the heat generation of the LED point light sources 10 is reduced.
In an alternative embodiment of the present invention, the light diffusion module 14 is at least one anti-glare sheet 141 disposed in parallel between the free-form surface lens 12 and the LCD display screen 3. The light diffusion module 14 of this embodiment adopts the anti-glare sheet 141, and the anti-glare sheet 141 has a diffusion effect on the light, and the light can be uniformly diffused to the LCD display screen 3 after passing through the anti-glare sheet 141, so that the structure is very simple, and the manufacturing cost is low. It is understood that, in the implementation, the different scattering rates of the antiglare sheet 141 can be selected reasonably according to the distance between the LED point light source 10 and the LCD display screen 3.
In another alternative embodiment of the present invention, the light diffusion module 14 includes two anti-glare sheets 141 with the same structure and disposed in parallel in layers between the free-form surface lens 12 and the LCD display screen 3, and a light-emitting surface of the anti-glare sheet 141 is configured to perform lambert scattering and gaussian scattering on light. The light diffusion module 14 of this embodiment adopts two anti-glare sheets 141 with the same structure, and the light-emitting surface of each anti-glare sheet 141 is set to perform lambert scattering and gaussian scattering on light, so that the scattering effect is good, and the uniform diffusion effect of light can be effectively improved.
In another alternative embodiment of the present invention, each of the anti-glare sheets 141 has a transmittance of more than 90%, a lambert scattering ratio of 5% to 10%, and a scattering angle of gaussian scattering of 20 degrees ± 5 degrees. In this embodiment, according to the corresponding experiment, it is determined that each anti-glare sheet 141 is made of the material with the above parameters, so that light can be effectively and uniformly diffused to the LCD display screen 3, and the light diffusion effect of the anti-glare sheet 141 is improved.
In an alternative embodiment of the present invention, as shown in fig. 2, the free-form surface lens 12 includes a cylindrical body 121 at the bottom and a free-form surface 123 axially protruding from the top end of the cylindrical body 121, and the bottom of the cylindrical body 121 is provided with a receiving cavity 125 axially recessed from the bottom end surface of the cylindrical body 121 for receiving the LED point light source 10. This embodiment adopts the bottom to be cylinder 121 to form free-form surface 123 along the axial protrusion from cylinder 121 top, and set up at the bottom face of cylinder 121 and hold chamber 125, the structure is simple relatively, and free-form surface 123 can be effectual carries out the plastic to the light that LED pointolite 10 sent, can make more light can kick into to light diffusion module 14, effectively promotes light utilization ratio and the structure is also simple.
In another optional embodiment of the present invention, the backlight device further includes a circuit board 16, the LED point light sources 10 are distributed on the circuit board 16 at intervals in a matrix form, a plurality of LED point light sources 10 are accommodated in the accommodating cavity 121, and the free-form surface lenses 12 on the same straight line along the length direction of the LCD display screen 3 have the same structure. This embodiment is matrix interval distribution with LED pointolite 10 on the circuit board 16, each region that can guarantee to light LCD display screen 3 completely, and will follow each free-form surface lens 12 on the same straight line of the length direction of LCD display screen 3 adopts the same structure, guarantees that the same straight line at the length direction of LCD display screen 3 brightens the effect evenly.
In another alternative embodiment of the present invention, the free-form surface lens 12 covering each of the LED point light sources 10 is integrally formed as a lens array. In this embodiment, the free-form surface lenses 12 covering the LED point light sources 10 are directly and integrally formed into a lens array, and the lens array can be directly and integrally mounted during assembly, and is very convenient to mount and dismount.
In another optional embodiment of the present invention, the backlight device further includes a controller 18 disposed on the circuit board 16 for controlling the operating state of the LED point light source 10 according to the ambient brightness. In this embodiment, the controller 18 is further arranged, and the controller 18 controls each of the LED point light sources 10 according to the ambient brightness, so that when the ambient brightness is large, a certain LED point light source 10 can be selectively turned off, the LCD display screen 3 can be uniformly turned on, the energy consumption is reduced, the heat generated by the LED point light source is reduced, and the convenience is very high.
On the other hand, an optional embodiment of the present invention further provides a vehicle-mounted head-up display, including an LCD display screen 3 and a backlight device 1, where a light emitting side of the backlight device 1 is opposite to the LCD display screen 3, where the backlight device 1 is the backlight device described in any one of the above. The vehicle-mounted head-up display adopts the backlight device 1, and can uniformly and effectively light the LCD display screen.
In yet another alternative embodiment of the present invention, the LCD display 3 includes a frame 30 and a liquid crystal display assembly 32 assembled on the frame 30, and a light shielding side plate 301 is further extended from a side of the frame 30. In this embodiment, the light-shielding side plate 301 extends from the side of the frame 30 of the liquid crystal display module 32, and the light-shielding side plate 301 shields the excessive light emitted from the side of the backlight device 1, thereby preventing glare from being generated and causing light pollution.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a backlight device of on-vehicle new line display, includes that the light-emitting side is just to many LED pointolite that the LCD display screen set up, its characterized in that, the device still include the one-to-one cover in a plurality of free curved surface lenses on many LED pointolite and set up in be used for between free curved surface lens and the LCD display screen will certainly throw again behind the even diffusion of light that the LED pointolite sent to light diffusion module on the LCD display screen.
2. The backlight device of claim 1, wherein the light diffusion module is at least one anti-glare sheet disposed in parallel between the free-form surface lens and the LCD screen.
3. The backlight device of claim 1 or 2, wherein the light diffusion module comprises two anti-glare sheets with the same structure and arranged in parallel between the free-form surface lens and the LCD display screen in layers, and a light-emitting surface of the anti-glare sheets is configured to perform lambert scattering and gaussian scattering on light.
4. The backlight device of the vehicular heads-up display of claim 3, wherein each of the antiglare sheets has a transmittance of more than 90%, a lambert scattering ratio of 5% to 10%, and a scattering angle of gaussian scattering of 20 degrees ± 5 degrees.
5. The backlight device of claim 1, wherein the free-form surface lens comprises a cylindrical body at a bottom and a free-form surface protruding from a top end of the cylindrical body in an axial direction, and the bottom of the cylindrical body is provided with a receiving cavity recessed from a bottom end surface of the cylindrical body in the axial direction for receiving the LED point light source.
6. The backlight device of claim 5, further comprising a circuit board, wherein the LED point light sources are arranged on the circuit board at intervals in a matrix form, the LED point light sources are accommodated in the accommodating cavity, and the free-form surface lenses on the same straight line along the length direction of the LCD display screen have the same structure.
7. The backlight device of claim 1, wherein the free-form surface lens covering each of the LED point light sources is integrally formed as a lens array.
8. The backlight device of claim 6, further comprising a controller disposed on the circuit board for controlling the operating status of the LED point light source according to ambient brightness.
9. A vehicle-mounted head-up display comprises an LCD display screen and a backlight device, wherein the light-emitting side of the backlight device is opposite to the LCD display screen, and the backlight device is as claimed in any one of claims 1 to 8.
10. The backlight device of claim 9, wherein the LCD panel comprises a frame and a liquid crystal display module assembled on the frame, and the frame further comprises a light shielding side plate extending from a side of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010403340.4A CN111624811A (en) | 2020-05-13 | 2020-05-13 | Vehicle-mounted head-up display and backlight source device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010403340.4A CN111624811A (en) | 2020-05-13 | 2020-05-13 | Vehicle-mounted head-up display and backlight source device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111624811A true CN111624811A (en) | 2020-09-04 |
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| CN202010403340.4A Pending CN111624811A (en) | 2020-05-13 | 2020-05-13 | Vehicle-mounted head-up display and backlight source device thereof |
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|---|---|---|---|---|
| JP2006010724A (en) * | 2004-06-22 | 2006-01-12 | Nitto Denko Corp | Light-diffusive antiglare film |
| JP2009122654A (en) * | 2007-10-26 | 2009-06-04 | Nippon Seiki Co Ltd | Display |
| US20120243104A1 (en) * | 2011-03-21 | 2012-09-27 | National Tsing Hua University | Head-up Display |
| KR20120110191A (en) * | 2011-03-29 | 2012-10-10 | 주식회사 엔투에이 | Light system for street light |
| CN104966485A (en) * | 2015-07-17 | 2015-10-07 | 樊强 | Head up display with adjustable backlight |
| KR20170042144A (en) * | 2015-10-08 | 2017-04-18 | 엘지이노텍 주식회사 | Head-Up display |
| CN107209406A (en) * | 2015-01-10 | 2017-09-26 | 镭亚股份有限公司 | Two-dimensional/three-dimensional (2D/3D) switchable displays backlight and electronic console |
| CN206618901U (en) * | 2017-02-14 | 2017-11-07 | 深圳前海智云谷科技有限公司 | A kind of head-up-display system and its imaging device |
| CN109937321A (en) * | 2017-01-25 | 2019-06-25 | 麦克赛尔株式会社 | headlight device |
| CN212433545U (en) * | 2020-05-13 | 2021-01-29 | 深圳市豪恩汽车电子装备股份有限公司 | Vehicle-mounted head-up display and backlight source device thereof |
-
2020
- 2020-05-13 CN CN202010403340.4A patent/CN111624811A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006010724A (en) * | 2004-06-22 | 2006-01-12 | Nitto Denko Corp | Light-diffusive antiglare film |
| JP2009122654A (en) * | 2007-10-26 | 2009-06-04 | Nippon Seiki Co Ltd | Display |
| US20120243104A1 (en) * | 2011-03-21 | 2012-09-27 | National Tsing Hua University | Head-up Display |
| KR20120110191A (en) * | 2011-03-29 | 2012-10-10 | 주식회사 엔투에이 | Light system for street light |
| CN107209406A (en) * | 2015-01-10 | 2017-09-26 | 镭亚股份有限公司 | Two-dimensional/three-dimensional (2D/3D) switchable displays backlight and electronic console |
| CN104966485A (en) * | 2015-07-17 | 2015-10-07 | 樊强 | Head up display with adjustable backlight |
| KR20170042144A (en) * | 2015-10-08 | 2017-04-18 | 엘지이노텍 주식회사 | Head-Up display |
| CN109937321A (en) * | 2017-01-25 | 2019-06-25 | 麦克赛尔株式会社 | headlight device |
| CN206618901U (en) * | 2017-02-14 | 2017-11-07 | 深圳前海智云谷科技有限公司 | A kind of head-up-display system and its imaging device |
| CN212433545U (en) * | 2020-05-13 | 2021-01-29 | 深圳市豪恩汽车电子装备股份有限公司 | Vehicle-mounted head-up display and backlight source device thereof |
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