CN217718277U - Head-up display device and vehicle based on augmented reality - Google Patents
Head-up display device and vehicle based on augmented reality Download PDFInfo
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- CN217718277U CN217718277U CN202221560667.3U CN202221560667U CN217718277U CN 217718277 U CN217718277 U CN 217718277U CN 202221560667 U CN202221560667 U CN 202221560667U CN 217718277 U CN217718277 U CN 217718277U
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Abstract
The application provides a new line display device and vehicle based on augmented reality. The head-up display device comprises an optical machine, an optical waveguide component and a lens component. The light machine is used for emitting first image light. The lens component is arranged between the light outlet and the optical waveguide component and is used for converging the first image light emitted by the optical machine to the optical waveguide component. The light guide component is used for coupling in the first image light, forming second image light after diffraction, and coupling out the second image light to the external display equipment. The vehicle includes a heads-up display device. In this way, the first image light is diffracted by the optical waveguide component, so that the first image light expands the pupil in the optical waveguide component, thereby forming second image light, which is finally coupled out to the external display device. Compared with the scheme adopting the optical path of the free-form surface mirror, the optical waveguide component can realize wider augmented reality display, correspondingly can increase more other entertainment functions and has reduced volume.
Description
Technical Field
The application relates to the field of automobiles, in particular to a head-up display device based on augmented reality and a vehicle.
Background
With the popularization of automobiles, the maturity of head-up display technology and the functions of advanced driving assistance systems are also increased.
In the related art, the augmented reality head-up display device employs a free-form surface mirror, so that the volume and weight of the head-up display device increase with the increase of the display screen, and the range of augmented reality head-up display is small.
SUMMERY OF THE UTILITY MODEL
Provided are a head-up display device and a vehicle, which are miniaturized and have an enlarged augmented reality display range.
The application provides a new line display device based on augmented reality, includes wherein:
the optical machine comprises a light outlet and is used for emitting first image light;
an optical waveguide assembly;
the lens assembly is arranged between the light outlet and the optical waveguide assembly and is used for converging the first image light emitted by the light machine to the optical waveguide assembly;
the optical waveguide component is used for coupling in the first image light, forming second image light after diffraction, and coupling out the second image light to external display equipment.
Optionally, the optical waveguide assembly includes:
a glass substrate;
the coupling-in grating is arranged on the glass substrate, is positioned on an emergent light path of the lens assembly and is used for coupling in the first image light;
the turning grating is arranged on the glass substrate and comprises a first side and a second side which are perpendicular to each other, and the position of the first side corresponds to the coupling grating;
the coupling-out grating is arranged on the glass substrate; the second side is located opposite to the outcoupling grating.
Optionally, the optical waveguide assembly includes at least two layers of optical waveguide sheets, and the at least two layers of optical waveguide sheets are stacked and spaced apart from each other.
Optionally, the optical waveguide assembly includes a red optical waveguide sheet, a green optical waveguide sheet, and a blue optical waveguide sheet stacked in sequence in the direction of incidence and emission.
Optionally, the optical waveguide component is made of a resin material and/or a glass material.
Optionally, the head-up display device further includes a controller, connected to the optical engine, and configured to control parameter information of the first image light emitted by the optical engine.
Optionally, the lens assembly is integrated within the optical machine; or
The lens assembly and the optical machine are of a split structure.
Optionally, the lens assembly is integrated within the optical waveguide assembly; or
The lens component and the optical waveguide component are of a split structure.
Optionally, the lens assembly comprises at least one convex lens.
The present application further provides a vehicle including the head-up display device as described above.
The application provides a new line display device based on augmented reality, including ray apparatus, optical waveguide subassembly and lens subassembly. The light machine is used for emitting first image light. The lens assembly is arranged between the light outlet and the optical waveguide assembly and used for converging the first image light emitted by the light machine to the optical waveguide assembly. The light guide component is used for coupling in the first image light, forming second image light after diffraction, and coupling out the second image light to the external display equipment. In this way, the first image light is diffracted by the optical waveguide component, so that the first image light expands the pupil in the optical waveguide component, thereby forming second image light, which is finally coupled out to the external display device. Compared with the scheme adopting the optical path of the free-form surface mirror, the optical waveguide component can realize wider augmented reality display, correspondingly can increase more other entertainment functions and has reduced volume.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a schematic structural diagram of a head-up display device according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram illustrating a positional relationship between the head-up display device, human eyes and an external display device according to the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of an optical waveguide assembly of the head-up display device shown in fig. 1.
Fig. 4 is a schematic structural diagram of an embodiment of the optical waveguide assembly shown in fig. 3.
Fig. 5 is a schematic diagram illustrating a positional relationship between a lens assembly and three of a light outlet and an incoupling grating of the head-up display device shown in fig. 1.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
The application provides a new line display device based on augmented reality, including ray apparatus, optical waveguide subassembly and lens subassembly. The light machine is used for emitting first image light. The lens component is arranged between the light outlet and the optical waveguide component and is used for converging the first image light emitted by the optical machine to the optical waveguide component. The light waveguide component is used for coupling in the first image light, forming second image light after diffraction, and coupling out the second image light to external display equipment. Thus, the light waveguide component diffracts the coupled first image light to expand the pupil of the first image light in the light waveguide component, so as to form second image light, and the second image light is finally coupled out to the external display device. Compared with the scheme adopting the optical path of the free-form surface mirror, the optical waveguide component can realize wider augmented reality display, correspondingly can increase more other entertainment functions and has reduced volume.
The present application further provides a vehicle including the head-up display device 1.
Fig. 1 is a schematic structural diagram of a head-up display device 1 according to an embodiment of the present disclosure. Fig. 2 is a schematic diagram illustrating a positional relationship between the head-up display device 1 and human eyes and an external display device 6. Referring to fig. 1 and 2, a head-up display device 1 includes an optical engine 2, an optical waveguide assembly 3, and a lens assembly 4. The optical engine 2 is a device that can convert an electrical signal into image light, and is configured to emit first image light. The optical engine 2 includes a light outlet 5, and the optical engine 2 emits the first image light outwards through the light outlet 5. The lens component 4 is arranged between the light outlet 5 and the optical waveguide component 3, and is used for converging the first image light emitted by the optical machine 2 to the optical waveguide component 3. Because the first image light emitted by the optical machine 2 is in a divergent state, the first image light can be converged by arranging the lens assembly 4. Further, the optical waveguide assembly 3 is used for coupling in the first image light, and after diffraction, the first image light expands the pupil in the optical waveguide assembly 3 to form a second image light larger than the first image light, and then the second image light is coupled out to the external display device 6, where the external display device 6 may be a front windshield of a vehicle. Thus, the optical waveguide assembly of the present application may enable a wider range of augmented reality displays, such as roadside vehicle information, pedestrian information, roadside store information, and the like, than schemes that employ a free-form surface mirror optical path. And the volume is reduced to some extent, so that the volume can not be limited, and more other entertainment functions can be correspondingly added, such as playing games, watching movies, voice communication, meeting, blind area picture display and the like. Moreover, the structure of the optical waveguide component 3 is simple, the position of the first image light coupled into the optical waveguide component is flexible, and the vehicle carrying difficulty can be reduced.
In this embodiment, a certain angle needs to be preset for the light coupling of the first image by the optical waveguide component 3, and other light cannot enter the interior of the head-up display device through the optical waveguide component except for the angle of the light outlet 5, so that the phenomenon of reverse flow of sunlight can be avoided.
In addition, it should be noted that the wavelength of the first image light designed by the optical engine 2 needs to be in a corresponding relationship with the wavelength of the second image light of the optical waveguide component 3, so as to achieve the maximum light conversion efficiency.
In some embodiments, the optical waveguide assembly 3 may be any one of a surface relief grating diffractive optical waveguide and a holographic diffractive optical waveguide or a combination of a surface relief grating diffractive optical waveguide and a holographic diffractive optical waveguide.
In some embodiments, types of optical engines 2 include, but are not limited to, laser + MEMS type optical engines, TFT-LCD optical engines, LED/laser + MDM chip optical engines, LCOS type optical engines, micro-LED type optical engines, and other types of optical engines.
With continued reference to fig. 1, in some embodiments, the head-up display device 1 further includes a controller 13 connected to the optical engine 2 for controlling parameter information of the first image light emitted by the optical engine 2. The controller 13 can control the first image light emitted by the light engine 2. Specifically, the controller 13 may control parameter information such as distortion, brightness, and uniformity of the first image light. The controller 13 may be connected to the vehicle communication network, and may correct distortion of the second image light displayed on the external display device 6 by combining an externally input video signal, other in-vehicle system information, and other in-vehicle mobile terminals. The controller 13 may also implement synchronization of the image interface of the external display device 6 and vehicle communication network information, and other entertainment and augmented reality functions. In some embodiments, the controller 13 includes a microprocessor, an in-vehicle communication chip, a video decoding chip, and the like, and also includes a real-time operating system, a file management system, an image color manager, and the like.
Because the space structure in the vehicle is complex, and the optical machine 2, the optical waveguide assembly 3, the lens assembly 4 and other components need to be arranged at a set fixed angle, which may cause the components such as the optical machine 2, the optical waveguide assembly 3, and the lens assembly 4 to be arranged, so that the overall volume of the head-up display device 1 does not meet the arrangement requirement of the whole vehicle, in some embodiments, the head-up display device 1 further includes a plane mirror 14, and the plane mirror 14 may be disposed between the lens assembly 4 and the optical waveguide assembly 3, or the plane mirror 14 may be disposed between the lens assembly 4 and the light outlet 5 of the optical machine 2 according to the design structure in the vehicle. The plane mirror 14 can also be arranged between the lens component 4 and the optical waveguide component 3 and between the lens component 4 and the light outlet 5 of the optical machine 2, so that the light path between the lens component 4 and the optical waveguide component 3 and/or the light path between the light outlet 5 of the optical machine 2 can be changed, the volume formed by the optical machine 2 and the lens component 4 and/or the lens component 4 and the optical waveguide component 3 is reduced, and the whole volume of the head-up display device 1 meets the arrangement requirement of the whole vehicle.
Fig. 3 is a schematic structural diagram of an embodiment of the optical waveguide assembly 3 of the head-up display device 1 shown in fig. 1. As shown in fig. 3, in some embodiments, the optical waveguide assembly 3 includes a glass substrate 7, an incoupling grating 8, a turning grating 9, and an outcoupling grating 10. The incoupling grating 8 is disposed on the glass substrate 7 and located on the exit light path of the lens assembly 4 for incoupling the first image light. The turning grating 9 is disposed on the glass substrate 7, and the turning grating 9 includes a first side 11 and a second side 12 perpendicular to each other. The first side 11 is located in correspondence with the incoupling grating 8. The outcoupling grating 10 is provided on the glass substrate 7. The second side 12 is located in correspondence with the outcoupling grating 10. In the process of forming the second image light by the diffraction of the first image light, the first image light is coupled into the coupling-in grating 8 and then transmitted into the turning grating 9, so as to realize the pupil expansion in the X-axis direction. Further, into the outcoupling grating 10 to realize a pupil expansion in the Y-axis direction. In this way, second image light having a larger size than the first image light is formed and coupled out to the external display device 6.
In some embodiments, the optical waveguide assembly 3 includes at least two layers of optical waveguide sheets, which are stacked and spaced apart from each other. In this embodiment, the optical waveguide assembly 3 includes two or more layers of optical waveguide sheets, and a gap is formed between two adjacent layers of optical waveguide sheets. The gap may be filled with a filling material, which may be an optical adhesive, so as to prevent outside air from entering the inside of the optical waveguide assembly 3, thereby preventing the light from being refracted to affect the effect of the first image light on pupil expansion in the optical waveguide assembly 3.
Fig. 4 is a schematic structural diagram of an embodiment of the optical waveguide assembly 3 shown in fig. 3. As shown in fig. 4, in some embodiments, the optical waveguide assembly 3 includes a red waveguide sheet 30, a green waveguide sheet 31, and a blue waveguide sheet 32, which are sequentially stacked in the incident and exit directions. In this embodiment, the composition type of the diffractive optical waveguide element 3 can be set in the GRB color mode according to the display effect of the external display device 6. For example, the wavelength of the red waveguide plate 30 is 838nm. The middle layer is a green light waveguide plate 31, and the wavelength of the green light waveguide plate 31 is 520nm. The wavelength of the blue waveguide sheet 32 is 420nm. The light sequentially passes through the red waveguide sheet 30, the green waveguide sheet 31, and the blue waveguide sheet 32. In this way, the second image light diffracted within the optical waveguide assembly 3 is made effective, thereby making the range of images displayed on the external display device 6 wider. In some embodiments, the arrangement structure of the red, green, and blue light guide sheets 30, 31, and 32 may be set according to the angle at which the first image light is coupled in. For example, if the first image light is coupled into the optical waveguide assembly 3 from a vertically downward direction, the red waveguide sheet 30 is disposed at the uppermost layer, the green waveguide sheet 31 is disposed at the intermediate layer, and the blue waveguide sheet 32 is disposed at the lowermost layer, along the vertically downward direction. Alternatively, if the first image light is coupled into the optical waveguide assembly 3 from a vertically upward direction, the red waveguide sheet 30 is disposed at the lowermost layer, the green waveguide sheet 31 is disposed at the intermediate layer, and the blue waveguide sheet 32 is disposed at the uppermost layer, along the vertically upward direction. Further alternatively, if the first image light is coupled into the optical waveguide assembly 3 in the horizontal direction and from the left to the right direction, the red waveguide sheet 30 is disposed on the leftmost layer, the green waveguide sheet 31 is disposed on the intermediate layer, and the blue waveguide sheet 32 is disposed on the rightmost layer along the horizontal direction and from the left to the right direction. Alternatively, if the first image light is coupled into the optical waveguide assembly 3 in the horizontal direction and from the right to the left direction, the red waveguide sheet 30 is disposed on the rightmost layer, the green waveguide sheet 31 is disposed on the intermediate layer, and the blue waveguide sheet 32 is disposed on the leftmost layer in the horizontal direction and from the right to the left direction. In the present embodiment, the first image light is coupled into the optical waveguide assembly 3 from a vertically downward direction, and thus, in the vertically downward direction, the red waveguide sheet 30 is disposed at the uppermost layer, the green waveguide sheet 31 is disposed at the intermediate layer, and the blue waveguide sheet 32 is disposed at the lowermost layer, as shown in fig. 4. In some embodiments, optical waveguide assembly 3 further includes edge banding 33. The edge sealing structures 33 are disposed at two ends of the three optical waveguide sheets perpendicular to the stacking direction of the three optical waveguide sheets, and are used for connecting and sealing the three optical waveguide sheets, so as to improve the integrity and the aesthetic property of the optical waveguide assembly 3.
In addition, each of the three layers of optical waveguides can be designed to emit light according to the color wavelength to be diffracted, the pupil expansion ratio, and the distance from the final image to the human eye. In addition, the positions of the coupling-in gratings 8 and the positions of the coupling-out gratings 10 of the three layers of optical waveguide sheets need to correspond one to one, so that the effect of the finally diffracted second image light is good.
In some embodiments, the material of the optical waveguide component 3 is resin material and/or glass material. Therefore, the optical waveguide component 3 is not easy to damage, and the service life is prolonged. Of course, the optical waveguide component 3 can also be made of other protective materials which are required to ensure that the light transmission is not affected or greatly reduced.
In some embodiments, the lens assembly 4 is integrated within the light engine 2. Thus, the integration level of the lens unit 4 and the optical unit 2 is improved, which is advantageous for the miniaturization of the whole head-up display device 1. Alternatively, the lens assembly 4 and the optical engine 2 may be in a split structure. Thus, the lens assembly 4 and the optical machine 2 can be processed separately and the process is simple.
In some embodiments, the lens assembly 4 is integrated within the optical waveguide assembly 3. In this way, the degree of integration of the lens unit 4 and the optical waveguide unit 3 is increased, which is advantageous for downsizing the entire head-up display device 1. Or the lens component 4 and the optical waveguide component 3 are in a split structure. In this way, the process of separately processing the lens assembly 4 and the optical waveguide assembly 3 is simplified.
Fig. 5 is a schematic diagram of an embodiment of a positional relationship between the lens assembly 4, the light outlet 5 and the coupling-in grating 8 of the head-up display device 1 shown in fig. 1. As shown in fig. 5, in some embodiments, lens assembly 4 includes at least one convex lens. The convex lens is used for converging image light. The convex lens is arranged between the light outlet 5 of the optical machine 2 and the coupling grating 8 of the optical waveguide component 3, so that the first image light emitted by the optical machine 2 is coupled into the optical waveguide component 3 after being converged, the optical efficiency of the first image light is improved, and the first image light emitted by the optical machine 2 can be coupled into the optical waveguide component. In some embodiments, the number of convex lenses may be 1, 2, 3, etc. The convex lenses are arranged side by side and at intervals between the light outlet 5 of the optical machine 2 and the coupling-in grating 8 of the optical waveguide component 3. In addition, since the size of the first image light emitted by different optical engines 2 is different from the size of the incoupling grating 8 of the optical waveguide assembly 3, the distance between the lens assembly 4 and the optical engine 2 for imaging and the distance between the lens assembly 4 and the incoupling grating 8 need to be designed according to the refraction angle of the lens assembly 4 for the first image light and need to be controlled with precision.
Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.
Claims (10)
1. A head-up display device based on augmented reality, comprising:
the optical machine comprises a light outlet, and is used for emitting first image light;
an optical waveguide assembly;
the lens component is arranged between the light outlet and the optical waveguide component and is used for converging the first image light rays emitted by the optical machine to the optical waveguide component;
the optical waveguide component is used for coupling in the first image light, forming second image light after diffraction, and coupling out the second image light to external display equipment.
2. The heads-up display device of claim 1 wherein the optical waveguide assembly comprises:
a glass substrate;
the coupling-in grating is arranged on the glass substrate, is positioned on the emergent light path of the lens component and is used for coupling in the first image light;
the turning grating is arranged on the glass substrate and comprises a first side and a second side which are perpendicular to each other, and the position of the first side corresponds to the coupling grating;
the coupling-out grating is arranged on the glass substrate; the second side is located opposite to the outcoupling grating.
3. The heads-up display device of claim 1, wherein the optical waveguide assembly includes at least two layers of optical waveguide sheets, the at least two layers of optical waveguide sheets being stacked and spaced apart from each other.
4. The head-up display device according to claim 1, wherein the optical waveguide assembly includes a red optical waveguide sheet, a green optical waveguide sheet, and a blue optical waveguide sheet stacked in this order in the direction of incidence and emission.
5. The head-up display device according to claim 1, wherein the optical waveguide component is made of resin and/or glass.
6. The head-up display device according to claim 1, further comprising a controller connected to the optical engine for controlling parameter information of the first image light emitted from the optical engine.
7. The heads-up display device of claim 1 wherein the lens assembly is integrated within the light engine; or
The lens assembly and the optical machine are of a split structure.
8. The heads-up display device of claim 1 wherein the lens assembly is integrated within the optical waveguide assembly; or
The lens component and the optical waveguide component are of split structures.
9. The heads-up display device of claim 1 wherein the lens assembly includes at least one convex lens.
10. A vehicle comprising a heads-up display device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221560667.3U CN217718277U (en) | 2022-06-21 | 2022-06-21 | Head-up display device and vehicle based on augmented reality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221560667.3U CN217718277U (en) | 2022-06-21 | 2022-06-21 | Head-up display device and vehicle based on augmented reality |
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| Publication Number | Publication Date |
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| CN217718277U true CN217718277U (en) | 2022-11-01 |
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| CN202221560667.3U Active CN217718277U (en) | 2022-06-21 | 2022-06-21 | Head-up display device and vehicle based on augmented reality |
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