CN214067493U - Projection optical system and head-up display device of automobile - Google Patents
Projection optical system and head-up display device of automobile Download PDFInfo
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Abstract
The embodiment of the utility model relates to the technical field of projection optics, and discloses a projection optical system applied to a head-up display device of an automobile, which comprises an image generation unit, a reflection unit, a double telecentric lens, a light splitting device and an imaging lens which are sequentially arranged according to the light emitting direction, wherein the light splitting device is required to be arranged at the image surface of the double telecentric lens and is configured to reflect and emit light beams used for imaging in the light beams emitted by the image generation unit, the double telecentric lens is configured to be used for adjusting the size of the projected image, the imaging lens is configured to be used for adjusting the virtual image distance of the projected image and outputting the light beams of the projected image to realize projection imaging, the projection optical system provided by the embodiment of the utility model can flexibly adjust the size of the image through the double telecentric lens and flexibly adjust the virtual image distance of the image through the imaging lens, the device can be applied to the head-up display devices of different types of automobiles, and has the advantages of good imaging effect, small volume and low cost.
Description
Technical Field
The embodiment of the utility model provides a relate to projection optics technical field, in particular to new line display device of projection optical system and car.
Background
HUD indicates through car windshield formula new line display, and along with the intelligent development of car now, all the assembly has HUD in the novel intelligent automobile at present usually, and this makes the user need not to look over the panel board and just can observe vehicle information and road conditions information such as the speed of a motor vehicle, speed limit instruction, driving route map, and wherein AR HUD is the trend of HUD development at present, and AR HUD can show the new line display device of AR picture promptly.
In implementing the embodiments of the present invention, the inventor finds that there are at least the following problems in the above related art: at present, HUD of carrying in the car, new line display device promptly, the size and the virtual image distance that form images are all unable regulation usually, to the car of different grade type, because front windshield's gesture is different, different to the demand of formation of image, all need carry out redesign in order to adapt to different cars to the system when setting up projection optical system, and in case the setting finishes to be difficult to adjust once more.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect of the prior art, the embodiment of the present invention provides a projection optical system and a head-up display device of an automobile, which have easily adjustable imaging effect.
The embodiment of the utility model provides an aim at is realized through following technical scheme:
in order to solve the above technical problem, in a first aspect, the embodiment of the present invention provides a projection optical system for a head-up display device of an automobile, the system includes: an image generation unit for emitting a light beam containing image information of a projected image;
a reflection unit, the light incident side of which is arranged in the light emergent direction of the image generation unit;
the light incidence side of the double telecentric lens is arranged in the light emergence direction of the light reflection side of the reflection unit, and the double telecentric lens is configured to be used for adjusting the size of the projected image;
the light splitting device is arranged at the image surface of the double telecentric lens, and the light splitting device is configured to reflect and emit a light beam used for imaging in the light beams emitted by the image generating unit;
and the light incidence side of the imaging lens is arranged in the light emergence direction of the light reflection side of the light splitting device, and the imaging lens is configured to be used for adjusting the virtual image distance of the projected image and outputting the light beam of the projected image to realize projection imaging.
In some embodiments, the double telecentric lens comprises a first refractive lens group and a second refractive lens group, and the projection optical system further comprises:
a controller configured to adjust a size of the projected image by controlling positions of the first and second refractive lens groups in the double telecentric lens.
In some embodiments, the projection optical system further comprises:
and the first driving device is respectively connected with the controller and the double telecentric lens and is used for driving the double telecentric lens to adjust the size of the light-emitting image according to a control instruction issued by the controller.
In some embodiments, the automobile further includes a front windshield, the front windshield being a diffuser, in the projection optical system, the relay image of the imaging lens is imaged on the front windshield, and the projection optical system further includes:
and the second driving device is respectively connected with the controller and the imaging lens and is used for driving the imaging lens to adjust the imaging position of the emergent light of the imaging lens according to a control instruction issued by the controller.
In some embodiments, the projection optical system further comprises:
and the third driving device is respectively connected with the controller and the light splitting device and used for driving the light splitting device to adjust the set position of the light splitting device according to a control instruction issued by the controller when the double telecentric lens is used for adjusting the image size, so that the light splitting device is positioned at the image plane of the double telecentric lens and can reflect emergent light beams.
In some embodiments, the reflection unit is a turning prism disposed between the image generation unit and the double telecentric lens at a first preset angle.
In some embodiments, the imaging lens has an optical power of 12mm and a focal length of 8.6 mm.
In some embodiments, the first refractive lens group has an optical power of 15mm and a focal length of 8.6 mm;
the focal power of the second refractive lens group is 8mm, and the focal length of the second refractive lens group is 6 mm.
In some embodiments, the image generation unit is a DLP display chip or an LCOS display chip.
In order to solve the above technical problem, in a second aspect, the embodiment of the present invention provides a new line display device of an automobile, including: the projection optical system according to the first aspect, wherein the projection optical system is capable of projecting an image onto a front windshield of the automobile to form an image.
Compared with the prior art, the beneficial effects of the utility model are that: different from the prior art, the embodiment of the present invention provides a projection optical system applied to a head-up display device of an automobile, which includes an image generation unit, a reflection unit, a double telecentric lens, a light splitting device and an imaging lens, which are sequentially arranged according to a light emitting direction, wherein the light splitting device needs to be arranged at an image surface of the double telecentric lens and configured to reflect and emit a light beam for imaging in the light beam emitted by the image generation unit, the double telecentric lens is configured to be capable of adjusting the size of the projected image, the imaging lens is configured to be capable of adjusting the virtual image distance of the projected image and outputting the light beam of the projected image to realize projection imaging, the projection optical system provided by the embodiment of the present invention can flexibly adjust the size of the image through the double telecentric lens, flexibly adjust the virtual image distance of the image through the imaging lens, the device can be applied to the head-up display devices of different types of automobiles, and has the advantages of good imaging effect, small volume and low cost.
Drawings
The embodiments are illustrated by the figures of the accompanying drawings which correspond and are not meant to limit the embodiments, in which elements/blocks having the same reference number designation may be represented by like elements/blocks, and in which the drawings are not to scale unless otherwise specified.
Fig. 1 is a schematic view of an application scenario of a projection optical system according to an embodiment of the present invention;
FIG. 2 is a schematic view of the front windshield imaging in the application scenario of FIG. 1;
fig. 3 is a schematic structural diagram of a projection optical system according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of an optical path diagram of the projection optical system configuration shown in FIG. 3;
fig. 5 is a block diagram illustrating an electrical connection structure of a projection optical system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a head-up display device of an automobile according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that, if not conflicted, the various features of the embodiments of the invention can be combined with each other and are within the scope of protection of the present application. In addition, although the functional blocks are divided in the device diagram, in some cases, the blocks may be divided differently from those in the device. Further, the terms "first," "second," and the like, as used herein, do not limit the data and the execution order, but merely distinguish the same items or similar items having substantially the same functions and actions.
In order to facilitate the connection structure to be limited, the utility model discloses use the light-emitting direction of light beam to carry out the position of part and prescribe a limit to as the reference. The terms "upper", "lower", "left", "right", "vertical", "horizontal" and the like as used herein are for illustrative purposes only. In order to facilitate the limitation of the connection structure, the utility model discloses use the direction that the light beam incides the beam splitting device from overlooking the direction as the reference and carry out the position of part and prescribe a limit to.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
In order to solve current car new line display device, can't carry out the problem of adjusting to the size of projection image and virtual image distance, the embodiment of the utility model provides a projection optical system, the size of image is adjusted in a flexible way to its two telecentric mirror heads, adjusts the virtual image distance of image through the imaging lens is nimble, can be applied to in the new line display device of the car of different grade type, and image effect is good, small, with low costs.
Fig. 1 is a schematic view of an application environment of a projection optical system according to an embodiment of the present invention, and fig. 2 is an imaging diagram of a front windshield in the application scene shown in fig. 1. Wherein, the application environment comprises: an automobile 1, the automobile 1 comprising: a front windshield a and a head-up display device 10.
Adopt in the new line display device 10 the utility model provides a projection optical system 100 is in order to realize the formation of image display of two kinds of image pictures, projection optical system 100 can be through imaging lens 110 output projection image P1.
In this application scenario, the projection image P1 may be used to display a two-dimensional image, for example, the driving information of the automobile 1, the driving information includes but is not limited to the speed information and the oil amount information of the automobile 1, and based on this, the automobile 1 should be correspondingly configured with a speed sensor, an oil amount sensor, etc., specifically, the setting of the two-dimensional image, the setting of the driving information of the automobile 1 and the corresponding sensor setting may be selected according to actual needs, and need not be restricted to the application scenario of the present invention.
Or, in this application scenario, the projection image P1 may also be used to display a three-dimensional image, that is, an AR picture, for example, the traffic information of the road where the automobile 1 is located, where the traffic information includes but is not limited to lanes, road markings, zebra crossings, obstacles, traffic lights, signs, etc. on the road where the automobile 1 is located, and based on this, the automobile 1 should be correspondingly configured with detection devices such as a camera and a laser radar, and further, if the automobile 1 can implement a navigation function, navigation indication information may be superimposed on the traffic information to be displayed together, specifically, the setting of the three-dimensional image, the traffic information of the road where the automobile 1 is located, and the setting of the corresponding detection devices may be selected according to actual needs, and need not be restricted by the application scenario of the present invention.
In this application scene, front windshield a prefers can clearly form images and the glass material that the transmittance is good makes, specifically, can select according to actual need, need not be restricted to the utility model discloses use the injecing of scene.
Specifically, the embodiments of the present invention will be further explained with reference to the drawings.
Example one
An embodiment of the present invention provides a projection optical system, can be applied to the new line display device of car as above-mentioned applied scene, please refer to fig. 3, fig. 4 and fig. 5 together, wherein, fig. 3 is the utility model provides a pair of projection optical system's structure, fig. 4 is the light path diagram of the projection optical system structure shown in fig. 3, fig. 5 is the embodiment of the utility model provides a projection optical system's electrical connection structure block diagram, projection optical system 100 includes: an imaging lens 110, an image generating unit 120, a reflecting unit 130, a double telecentric lens 140, a light splitting device 150, a controller 160, a first driving device 171, a second driving device 172, and a third driving device 173.
The image generation unit 120, configured to emit a light beam containing image information of a projected image; the image generating unit 120 is a dlp (digital Light processing) display chip or an LCOS (Liquid crystal on Silicon) display chip. In the embodiment of the present invention, the image generating unit 120 further includes an effective surface 121 and a protection glass 122. In some other embodiments, the image generating unit 120 may also be other image display chips such as a DMD (Digital Micromirror Device) display chip, and specifically, may be set according to actual needs, and does not need to be restricted to the limitations of the embodiments of the present invention.
The light incident side of the reflection unit 130 is arranged in the light emergent direction of the image generation unit 120; the reflection unit 130 is a turning prism, which is disposed between the image generation unit 120 and the double telecentric lens 140 at a first preset angle, and the turning prism adopted by the reflection unit 130 may be a total internal reflection prism TIR, so as to implement total reflection of the light beam. In the embodiment shown in fig. 4, the reflection unit 130 is a right triangular prism, a right-angle surface of the right triangular prism is opposite to the image generation unit 120, another right-angle surface of the right triangular prism is opposite to the double telecentric lens 140, a reflection angle of an inclined plane of the reflection unit 130 is 90 degrees, that is, a first preset angle of the reflection unit 130 is 45 degrees, which is the preset angle is set in the optical path, in some other embodiments, the selection of the model, the material and the like of the first reflection unit 130 and the setting of the first preset angle can be set according to actual needs, and the restriction on the embodiment of the present invention is not required.
The light incident side of the double telecentric lens 140 is disposed in the light emergent direction of the light reflecting side of the reflection unit 130. Further, the double telecentric lens 140 comprises a first refractive lens group 141 and a second refractive lens group 142, and the controller 160 is configured to adjust the size of the projected image by controlling the positions of the first refractive lens group 141 and the second refractive lens group 142 in the double telecentric lens 140; the first driving device 171 is connected to the controller 160 and the double telecentric lens 140, and is configured to drive the first refractive lens group 141 and the second refractive lens group 142 to adjust the size of the light emitted therefrom according to a control instruction issued by the controller 160. The focal power of the first refractive lens group 141 is 15mm, and the focal length of the first refractive lens group 141 is 8.6 mm; the focal power of the second refractive lens group 142 is 8mm, and the focal length of the second refractive lens group 142 is 6 mm. Specifically, first refractive lens group 141 and/or second refractive lens group 142 can be a single lens, also can be the lens group of compriseing a plurality of lenses, and it also can contain other optical device, in the in-service use scene, can set up according to actual need, need not be restricted to the utility model discloses a prescribe a limit to. It should be noted that the focal power and the focal length of the first refractive lens group 141 and/or the second refractive lens group 142 are only one design parameter obtained by the software simulation according to the embodiment shown in fig. 4 of the present invention, in an actual situation, according to the difference of the light beam propagation path, the specific design parameter of the first refractive lens group 141 and/or the second refractive lens group 142 may also be obtained by the software simulation, and the embodiment of the present invention does not provide any limitation on the design parameter of the first refractive lens group 141 and/or the second refractive lens group 142 during the actual simulation or production.
The light incidence side of the light splitting device 150 is arranged in the light emergence direction of the light emergence side of the double telecentric lens 140, and the light splitting device 150 is arranged at the image plane of the double telecentric lens 140; the focal power of the light splitting device 150 is 24 mm. In the embodiment of the present invention, the light splitting device 150 is a device for splitting the light beam of the projection image P1, and specifically, it reflects the light beam of the projection image P1 by reflection or the like, and the reflected light beam enters the imaging lens 110. The light splitting device 150 may be made of H-K9L colorless optical glass, and in some other embodiments, the material and color of the light splitting device 150 may be selected according to actual needs, specifically, the design may be performed according to actual needs, and the embodiment of the present invention and the limitations of the drawings are not limited. The third driving device 173 is connected to the controller 160 and the light splitting device 150, and is configured to drive the light splitting device 150 to move according to a control instruction issued by the controller 160.
It should be noted that the focal power of the optical splitter 150 is only one design parameter obtained by software simulation according to the embodiment of the present invention shown in fig. 4, in practical applications, according to the difference of the light beam propagation path, the specific design parameter of the optical splitter 150 may also obtain other parameters according to software simulation, and the embodiments of the present invention do not provide any limitation on the design parameter of the optical splitter 150 during practical simulation or production.
It should be noted that when the double telecentric lens 140 is adjusted, the light splitting device 150 needs to be adjusted accordingly, specifically, the center of the light splitting device 150 needs to be disposed on the image plane of the relay image P3 formed by the double telecentric lens 140, wherein the position of the light splitting device 150 can be adjusted by the third driving device 173, so as to realize normal imaging after the light beam is reflected or projected from the light splitting device 150.
The light incident side of the imaging lens 110 is arranged in the light emergent direction of the light reflecting side of the light splitting device 150; the focal power of the imaging lens 110 is 12mm, and the focal length of the imaging lens 110 is 8.6 mm. Specifically, the imaging lens 110 may be a single lens, or a lens group composed of a plurality of lenses, and it may also include other optical devices, and in an actual usage scenario, the imaging lens may be set according to actual needs, and does not need to be restricted to the embodiments of the present invention. It should be noted that the focal power and the focal length of the imaging lens 110 are only one design parameter obtained by the software simulation according to the embodiment shown in fig. 4 of the present invention, in an actual situation, according to the difference of the light beam propagation path, the specific design parameter of the imaging lens 110 may also obtain other parameters according to the software simulation, and the embodiment of the present invention does not provide any limitation on the design parameter of the imaging lens 110 during the actual simulation or production.
The controller 160 is respectively connected to the image generating unit 120, the double telecentric lens 140, the light splitting device 150 and the imaging lens 110, and is configured to control light emission of the image emitted by the image generating unit 120, adjust the double telecentric lens 140 to adjust an imaging size, and adjust the imaging lens 110 to adjust an imaging distance; the controller 160 may be various chips, modules, units, devices and/or apparatuses with computing functions, such as a processor, a server, etc., which are commonly used in optical projection and capable of sending control instructions, and further, the controller 160 may further have a communication function with the outside and/or a computing and/or controlling function, etc., which are commonly possessed by projection apparatuses, for receiving user gestures or instructions, and specifically, the corresponding controller 160 may be selected according to actual needs, without being restricted to the limitations of the embodiments of the present invention.
As described in the above application scenario, the automobile 1 further includes a front windshield a, and in the projection optical system 100, the relay image P1 of the imaging lens 110 is imaged on the front windshield a. In the embodiment of the present invention, the controller 160 is further connected to the imaging lens 110, and the controller 160 is configured to adjust a virtual image distance of the projection image P1 when the front windshield a is imaged by controlling the position of the imaging lens 110. Specifically, the second driving device 172 is respectively connected to the controller 160 and the imaging lens 110, and is configured to drive the imaging lens 110 to adjust an imaging position of light emitted from the imaging lens 110 according to a control instruction issued by the controller 160.
Adopt the embodiment of the utility model provides a when projection optical system carries out the demonstration of two images, use the application scene shown in fig. 1 and fig. 2 as an example, image generation unit 120 plays projection image P1's image information, and the light beam that exits, light beam get into two telecentric mirror heads 140 after reflection unit 130 reflects, then through beam splitter 150 reflection get into among imaging lens 110 after-emergence projection show projection image P1 at the front windshield a of car 1. Further, the distance and size of the virtual image presented on the front windshield a can also be adjusted by adjusting the focal length and position of the imaging lens 110, even replacing lenses of different magnifications, and the like. Further, the size of the virtual image on the front windshield a can be adjusted by adjusting the focal length and position of the first refractive lens group 141 and/or the second refractive lens group 142 in the double telecentric lens 140, even replacing lenses with different magnifications, and the like, and there is a need to adjust the position of the light splitting device 150 correspondingly after adjusting the double telecentric lens 140.
It should be noted that the first driving device 171, the second driving device 172 and/or the third driving device 173 may respectively drive the double telecentric lens 140, the imaging lens 110 and/or the light splitting device 150 by a mechanical method, may respectively drive the double telecentric lens 140, the imaging lens 110 and/or the light splitting device 150 by a software driving method, or may also respectively drive the double telecentric lens 140, the imaging lens 110 and/or the light splitting device 150 by a soft and hard combination method, for example, a servo/motor driving method may be adopted, or a software driving method may be realized by a wired/wireless connection between the controller 160 and a server/system/electronic device, or a switching tube/switching circuit driving method may be adopted, specifically, can set up according to actual need, need not be restricted to the utility model discloses the injeciton.
Example two
The embodiment of the utility model provides a new line display device of car, this car can be as above-mentioned application scene car 10, this new line display device can be as above-mentioned application scene new line device, please see fig. 6, it shows the utility model discloses a new line display device 10's of car structure that the embodiment provides, new line display device 10 includes as above-mentioned embodiment one projection optical system 100, projection optical system 100 can with projection image P1 projection is in realize the formation of image on car 10's the front windshield a.
It should be noted that, the specific structure of the projection optical system 100 is as described in the above embodiment, and please refer to the description of the projection optical system 100 in the above embodiment, which is not described in detail herein.
The embodiment of the utility model provides a be applied to head-up display device's of car projection optical system is provided in the embodiment of the utility model, it includes image generation unit, reflection unit, two telecentric mirror heads, beam splitting device and the imaging lens that set gradually according to the light-emitting direction, the beam splitting device need set up in the image plane department of two telecentric mirror heads and configure to reflect the light beam that is used for formation of image in the light beam that the image generation unit is emergent, two telecentric mirror heads configure to can be used for adjusting the size of projection image, the imaging lens configure to can be used for adjusting the virtual image distance of projection image, and export the light beam of projection image in order to realize projection imaging, the projection optical system that the embodiment of the utility model provides can be used for the size of image is adjusted in a flexible way through two telecentric mirror heads, adjusts the virtual image distance of image through the imaging lens is nimble, can be applied to the head-up display device of the car of different grade type, and the imaging effect is good, the volume is small, and the cost is low.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A projection optical system, characterized by being applied to a head-up display device of an automobile, the system comprising:
an image generation unit for emitting a light beam containing image information of a projected image;
a reflection unit, the light incident side of which is arranged in the light emergent direction of the image generation unit;
the light incidence side of the double telecentric lens is arranged in the light emergence direction of the light reflection side of the reflection unit, and the double telecentric lens is configured to be used for adjusting the size of the projected image;
the light splitting device is arranged at the image surface of the double telecentric lens, and the light splitting device is configured to reflect and emit a light beam used for imaging in the light beams emitted by the image generating unit;
and the light incidence side of the imaging lens is arranged in the light emergence direction of the light reflection side of the light splitting device, and the imaging lens is configured to be used for adjusting the virtual image distance of the projected image and outputting the light beam of the projected image to realize projection imaging.
2. The projection optical system according to claim 1,
the two telecentric mirror heads include a first refraction lens group and a second refraction lens group, the projection optical system further includes:
a controller configured to adjust a size of the projected image by controlling positions of the first and second refractive lens groups in the double telecentric lens.
3. The projection optical system according to claim 2, characterized in that the projection optical system further comprises:
and the first driving device is respectively connected with the controller and the double telecentric lens and is used for driving the double telecentric lens to adjust the size of the light-emitting image according to a control instruction issued by the controller.
4. The projection optical system according to claim 3,
the automobile further includes a front windshield, the front windshield is a diffuser, in the projection optical system, a relay image of the imaging lens is imaged on the front windshield, and the projection optical system further includes:
and the second driving device is respectively connected with the controller and the imaging lens and is used for driving the imaging lens to adjust the imaging position of the emergent light of the imaging lens according to a control instruction issued by the controller.
5. The projection optical system according to claim 4, characterized in that the projection optical system further comprises:
and the third driving device is respectively connected with the controller and the light splitting device and used for driving the light splitting device to adjust the set position of the light splitting device according to a control instruction issued by the controller when the double telecentric lens is used for adjusting the image size, so that the light splitting device is positioned at the image plane of the double telecentric lens and can reflect emergent light beams.
6. The projection optical system according to claim 5,
the reflection unit is a steering prism and is arranged between the image generation unit and the double telecentric lens at a first preset angle.
7. The projection optical system according to claim 6,
the focal power of the imaging lens is 12mm, and the focal length of the imaging lens is 8.6 mm.
8. The projection optical system according to claim 7,
the focal power of the first refractive lens group is 15mm, and the focal length of the first refractive lens group is 8.6 mm;
the focal power of the second refractive lens group is 8mm, and the focal length of the second refractive lens group is 6 mm.
9. The projection optical system according to claim 8,
the image generation unit is a DLP display chip or an LCOS display chip.
10. A head-up display device for an automobile, comprising: the projection optical system according to any one of claims 1 to 9, which is capable of projecting an image onto a front windshield of the automobile to realize imaging.
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| CN202023228475.6U CN214067493U (en) | 2020-12-28 | 2020-12-28 | Projection optical system and head-up display device of automobile |
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| CN202023228475.6U CN214067493U (en) | 2020-12-28 | 2020-12-28 | Projection optical system and head-up display device of automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112578569A (en) * | 2020-12-28 | 2021-03-30 | 广景视睿科技（深圳）有限公司 | Projection optical system and head-up display device of automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112578569A (en) * | 2020-12-28 | 2021-03-30 | 广景视睿科技（深圳）有限公司 | Projection optical system and head-up display device of automobile |
| WO2022141852A1 (en) * | 2020-12-28 | 2022-07-07 | 广景视睿科技（深圳）有限公司 | Projection optical system and head-up display device of automobile |
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