Design method for head-up display apparatus, head-up display apparatus, vehicle, and device

Abstract

A design method for a head-up display apparatus and a head-up display apparatus. The head-up display apparatus comprises an image source, a reflection assembly and a baffle. The design method comprises: acquiring the dimension of an optical channel and a first preset dimension of an eyebox; acquiring an initial field of view of the eyebox at the first preset dimension; and on the basis of a first parameter, acquiring a target field of view of a head-up display apparatus, wherein the first parameter comprises a second preset dimension and the dimension of the optical channel, and the second preset dimension is smaller than the first preset dimension; or on the basis of a second parameter, acquiring a target eyebox dimension of a head-up display apparatus, wherein the second parameter comprises a first preset field of view and the dimension of the optical channel, and the first preset field of view is smaller than the initial field of view.

Description

Design method of head-up display device, head-up display device, vehicle and equipment

[0001] The present application claims priority to the Chinese patent application No. 202411255349.X filed on September 09, 2024 with the China Patent Office, the whole content of the above application is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of head-up display, for example, to a design method of head-up display device, head-up display device, vehicle and equipment. BACKGROUND

[0003] With the improvement of material culture, in order to meet the needs of users for car driving safety and entertainment playing, head-up display technology is more and more widely used in the field of automobile, and users gradually increase the demand for head-up display system with larger field of view.

[0004] In the related art, a reflection system composed of a single or multiple free-form surfaces is usually used to form an image on the front windshield of a car. Since the overall opening size of the head-up display system cannot be adjusted too much, in the case where the overall opening, eyebox size and image source are determined, the field of view of the head-up display system cannot be further increased. SUMMARY

[0005] The embodiments of the present application provide a design method of head-up display device, head-up display device, vehicle and equipment, which not only maintains the advantage of small volume of head-up display device, but also can expand the field of view under the condition that the size of the light channel is fixed, or obtain a larger eyebox size.

[0006] According to a first aspect of the present application, a design method of a head-up display device is provided, the head-up display device comprising

[0007] an image source, a reflection assembly and a baffle, the image source is configured to generate an image beam and project the image beam to the reflection assembly, an inner cavity of the baffle forms a light channel, and the image beam passes through the light channel; the image beam passing through the light channel is projected to a windshield, and enters an eyebox after being reflected by the windshield;

[0008] The design method comprises:

[0009] obtaining the size of the light channel and the first preset size of the eyebox;

[0010] obtaining the initial field of view of the eyebox under the first preset size;

[0011] According to a first parameter, a target field of view angle of the head-up display device is acquired; the first parameter comprises a second preset size and a size of the light channel, and the second preset size is smaller than the first preset size.

[0012] Alternatively, according to a second parameter, a target eyebox size of the head-up display device is acquired; the second parameter comprises a first preset field of view angle and a size of the light channel, and the first preset field of view angle is smaller than the initial field of view angle.

[0013] Optionally, after the target field of view angle of the head-up display device is acquired according to the first parameter, or the target eyebox size of the head-up display device is acquired according to the second parameter, the method further comprises:

[0014] According to the first parameter and the target field of view angle, parameters of the image source and / or parameters of the reflection assembly are acquired.

[0015] Alternatively, according to the second parameter and the target eyebox size, parameters of the image source and / or parameters of the reflection assembly are acquired.

[0016] Optionally, the parameters of the image source comprise an image source output size of the image source.

[0017] Optionally, the reflection assembly comprises at least one reflection element.

[0018] The parameters of the reflection assembly comprise at least one of a number, a position, a size and a face type of the reflection element.

[0019] Optionally, before the target field of view angle of the head-up display device is acquired according to the first parameter, or the target eyebox size of the head-up display device is acquired according to the second parameter, the method further comprises:

[0020] A target human eye movement range is acquired.

[0021] The first parameter and the second parameter comprise the target human eye movement range.

[0022] Optionally, before the target field of view angle of the head-up display device is acquired according to the first parameter, the method further comprises:

[0023] An initial projection area of the image light beam on the windshield glass when the first preset size and the initial field of view angle are acquired;

[0024] A first target projection area of the image light beam on the windshield glass when the second preset size is acquired according to the initial projection area;

[0025] Alternatively, the second target projection area of the image light beam on the windshield glass is obtained according to the first preset field of view angle of the initial projection area.

[0026] The first parameter further comprises the first target projection area, and the second parameter further comprises the second target projection area.

[0027] Optionally, the area of the first target projection area is less than or equal to the area of the initial projection area, and the area of the second target projection area is less than or equal to the area of the initial projection area.

[0028] Optionally, the second preset size comprises a second preset vertical size and / or a second preset horizontal size, the second preset vertical size being a size of the eyebox along a vertical direction when the eyebox is in the second preset size, and the second preset horizontal size being a size of the eyebox along a horizontal direction when the eyebox is in the second preset size.

[0029] The target field of view angle comprises a target vertical field of view angle and / or a target horizontal field of view angle, the target vertical field of view angle being a field of view angle along the vertical direction, and the target horizontal field of view angle being a field of view angle along the horizontal direction.

[0030] The second preset vertical size corresponds to the target vertical field of view angle, and the second preset horizontal size corresponds to the target horizontal field of view angle.

[0031] Optionally, the second preset horizontal size is greater than a preset interpupillary distance.

[0032] Optionally, the second preset vertical size is greater than or equal to 10 mm, and the second preset horizontal size is greater than or equal to 60 mm.

[0033] Optionally, the target field of view angle of the head-up display device is obtained according to the first parameter, comprising:

[0034] The size of the eyebox is reduced from the first preset size to the second preset size under the condition that the field of view angle is the initial field of view angle, and the target field of view angle of the head-up display device is obtained according to the second preset size and the size of the light channel.

[0035] The target eyebox size of the head-up display device is obtained according to the second parameter, comprising:

[0036] The field of view angle is reduced from the initial field of view angle to the first preset field of view angle under the condition that the eyebox size is the first preset size, and the target field of view angle of the head-up display device is obtained according to the first preset field of view angle and the size of the light channel.

[0037] Optionally, before the target field of view of the head-up display device is acquired according to the first parameter, or the target eyebox size of the head-up display device is acquired according to the second parameter, the method further comprises:

[0038] acquiring a first light ray envelope volume of the head-up display device under the first preset size and the initial field of view;

[0039] acquiring a second light ray envelope volume of the head-up display device under the second preset size according to the first light ray envelope volume;

[0040] or, acquiring a third light ray envelope volume of the head-up display device under the first preset field of view according to the first light ray envelope volume;

[0041] wherein the first parameter further comprises the second light ray envelope volume, and the second parameter further comprises the third light ray envelope volume.

[0042] According to a second aspect of the present application, a head-up display device is provided, which is formed by the design method of the head-up display device according to the first aspect.

[0043] According to a fourth aspect of the present application, a computer device is provided, which comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the design method according to the first aspect when executing the program.

[0044] The design method of the head-up display device, the head-up display device, the vehicle and the device provided by the embodiments of the present application can reduce the size of the eyebox, reduce the light ray envelope passing through the light channel, and further provide space for expanding the field of view. Thus, a larger display range of the target virtual image can be obtained, and the field of view can be expanded. On the other hand, the embodiments of the present application also maintain the advantage of small volume of the head-up display device. Alternatively, the field of view is reduced, and the size of the light channel is fixed, so that a larger eyebox size can be obtained. In summary, according to the size of the light channel, the negative correlation between the field of view and the eyebox size is determined. BRIEF DESCRIPTION OF DRAWINGS

[0045] FIG. 1 is a flowchart of a first design method of a head-up display device provided by the embodiments of the present application;

[0046] FIG. 2 is a structural schematic diagram of a first head-up display device provided by the embodiments of the present application;

[0047] FIG. 3 is a flowchart of a second design method of a head-up display device provided by the embodiments of the present application;

[0048] FIG. 4 is a flowchart of a third design method of a head-up display device provided by the embodiments of the present application;

[0049] FIG. 5 is a schematic diagram of an optical path of a first head-up display device according to an embodiment of the present application;

[0050] FIG. 6 is a schematic diagram of an optical path of a second head-up display device according to an embodiment of the present application;

[0051] FIG. 7 is a flowchart of a design method of a fourth head-up display device according to an embodiment of the present application;

[0052] FIG. 8 is a flowchart of a design method of a fifth head-up display device according to an embodiment of the present application;

[0053] FIG. 9 is a schematic diagram of a structure of a carrier according to an embodiment of the present application;

[0054] FIG. 10 is a schematic diagram of a structure of a computer device according to an embodiment of the present application. DETAILED DESCRIPTION

[0055] The terms "first", "second", and the like in the description and in the claims of the present application and in the above drawings are used to distinguish between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the present application described herein are capable of operation in other sequences than those described or otherwise illustrated herein. Furthermore, the terms "comprise", "include", "have" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, article, or apparatus that comprises a list of steps or units can not necessarily be limited to those particularly listed steps or units, but can include additional steps or units not expressly listed or inherent to such process, method, article, or apparatus.

[0056] FIG. 1 is a flowchart of a design method of a first head-up display device according to an embodiment of the present application, and FIG. 2 is a schematic diagram of a structure of the first head-up display device according to an embodiment of the present application. Referring to FIGS. 1 and 2, the design method of the head-up display device comprises:

[0057] S101, obtaining a size of an optical path and a first preset size of an eyebox.

[0058] The head-up display device 100 comprises an image source 10, a reflection assembly 20, and a baffle 30. The image source 10 is configured to generate an image light beam and project the image light beam to the reflection assembly 20. The reflection assembly 20 is configured to project the image light beam to the baffle 30 and through an optical path formed by an inner cavity of the baffle 30. The head-up display device 100 is not limited to two mirrors as shown in FIG. 2, but can also be fewer or more mirrors.

[0059] Exemplarily, the head-up display device 100 transmits the image light beam to a projection medium, such as a windshield in a car, and the image light beam is reflected by the projection medium into the eyebox range, so that the driver can observe the target virtual image in the eyebox range, and can directly observe the current speed, navigation, and other information without needing to lower or turn the head, thereby improving the safety of driving.

[0060] Exemplarily, the head-up display device 100 is applied to a car, and in other embodiments, the head-up display device 100 provided by the embodiments of the present application can also be applied to, for example, a fire truck, a military vehicle, and can also be applied to other fields, such as aviation, ship, and the like.

[0061] It can be understood that in the related art, enlarging the field of view generally needs to increase the use area of the image source 10, and enlarging the field of view while the use area of the image source 10 is unchanged will cause the resolution of the target virtual image to be reduced, thereby reducing the user experience. However, since the size of the light channel of the baffle 30 is unchanged, enlarging the use area of the image source 10 will cause part of the image light beam to be unable to be transmitted to the eyebox range through the light channel, thereby causing the target virtual image observed at the edge position of the eyebox 40 to be incomplete, wherein the eyebox range is the eyebox 40.

[0062] Exemplarily, the eyebox 40 is the eye movement range of the driver, and the driver can observe the complete target virtual image when the eyes move within the size of the eyebox 40, and the driver cannot observe the complete target virtual image when the eyes move beyond the range of the eyebox 40. The first preset size is the initial size of the eyebox 40, and the second preset size is the size of the eyebox 40 after adjustment, and the second preset size is smaller than the first preset size. The size of the eyebox 40 is reduced, thereby providing a basis for obtaining a larger target field of view.

[0063] The field of view of the head-up display device 100 is related to the size of the eyebox 40 and the size of the light channel.

[0064] S102, obtaining an initial field of view of the eyebox at a first preset size.

[0065] In one embodiment, the initial field of view is smaller than the target field of view. The initial field of view is the field of view of the head-up display device when the size of the eyebox 40 is the first preset size. The field of view of the head-up display device 100 is adjusted on the basis of the initial field of view, and the initial field of view is enlarged to the target field of view, thereby realizing the enlargement of the field of view.

[0066] S103, obtaining a target field of view of the head-up display device according to a first parameter; the first parameter includes a second preset size and a size of the light channel, and the second preset size is smaller than the first preset size.

[0067] The target field of view angle is the field of view angle of the head-up display device 100 obtained according to the size of the eyebox 40 and the light channel in the adjusted second preset size. According to the size of the light channel, the embodiment of the present application determines the negative correlation between the field of view angle and the size of the eyebox 40. In step S103, the size of the eyebox is reduced, and the size of the light channel is fixed, so that a larger display range of the target virtual image can be obtained, and the field of view angle is expanded. Alternatively, conversely, in step S104, the field of view angle is reduced, and the size of the light channel is fixed, so that a larger size of the eyebox can be obtained.

[0068] The second preset size includes a second preset vertical size and / or a second preset horizontal size. The second preset vertical size is the size of the eyebox 40 in the vertical direction when the eyebox 40 is in the second preset size. The second preset horizontal size is the size of the eyebox 40 in the horizontal direction when the eyebox 40 is in the second preset size.

[0069] Alternatively, adjusting the size of the eyebox 40 can simultaneously adjust the vertical size and the horizontal size of the eyebox 40, or can separately adjust only the vertical size or the horizontal size of the eyebox 40, to meet the display function of the head-up display device 100 under various requirements. When only the vertical size of the eyebox 40 is separately adjusted, the second preset size includes the second preset vertical size. When only the horizontal size of the eyebox 40 is separately adjusted, the second preset size includes the second preset horizontal size. When the vertical size and the horizontal size of the eyebox 40 are simultaneously adjusted, the second preset size includes the second preset vertical size and the second preset horizontal size.

[0070] If a smaller eyebox size is set, the eye movement range of the driver is smaller. Therefore, when adjusting the size of the eyebox 40, a suitable eyebox size needs to be set to realize the head-up display device 100 with a large field of view angle, while ensuring the user experience. Therefore, the second preset horizontal size is set to be greater than the preset interpupillary distance. The preset interpupillary distance is the interpupillary distance of an ordinary person. The second preset horizontal size after reduction is greater than the interpupillary distance of an ordinary person, so that the driver can observe a complete target virtual image within the eye movement range during driving, and in addition, it can be ensured that the projection area of the imaging light beam on the windshield 200 does not exceed the projection area before the field of view angle is expanded, to ensure the imaging quality of the head-up display device 100.

[0071] Alternatively, the second preset vertical size is greater than or equal to 10 mm, and the second preset horizontal size is greater than or equal to 60 mm. The second preset vertical size and the second preset horizontal size can be set according to actual requirements, which are not limited in the embodiment of the present application. A suitable second preset vertical size and a suitable second preset horizontal size are set to ensure that the driver can observe a complete target virtual image during driving, and to expand the field of view angle of the head-up display device.

[0072] S104, acquire a target eyebox size of the head-up display device according to the second parameter; the second parameter comprises the first preset field of view angle and the size of the light channel, and the first preset field of view angle is smaller than the initial field of view angle.

[0073] The design method of the head-up display device provided in the embodiments of the present application provides space for expanding the field of view by reducing the size of the eyebox 40 and reducing the light ray envelope passing through the light channel, when the size of the light channel is fixed. Thus, a larger display range of the target virtual image can be obtained, and the field of view can be expanded. On the other hand, the embodiments of the present application also maintain the advantage of a smaller volume of the head-up display device. Alternatively, the field of view is reduced while the size of the light channel is fixed, so that a larger eyebox size can be obtained. In summary, according to the size of the light channel, a negative correlation between the field of view and the size of the eyebox 40 is determined.

[0074] FIG. 3 is a flowchart of a second design method of a head-up display device provided in the embodiments of the present application, with reference to FIGS. 2 and 3, the design method comprises:

[0075] S201, acquire the size of the light channel and the first preset size of the eyebox.

[0076] S202, acquire the initial field of view angle of the eyebox at the first preset size.

[0077] S203, acquire the target human eye movement range.

[0078] The target human eye movement range is the eye movement range of the driver, and the target human eye movement range is determined by actual needs. The size of the eyebox 40 is adjusted according to the target human eye movement range to obtain the required eye movement range of the driver, so as to meet the needs of the driver for the head-up display device with a large field of view.

[0079] S204, acquire the initial projection area of the image light beam on the windshield glass at the first preset size.

[0080] The initial projection area is the projection area of the image light beam when the size of the eyebox is the first preset size. The initial projection area is the projection area of the imaging light beam on the windshield glass 200 before the field of view is expanded. The initial projection area is acquired to provide a basis for subsequent adjustment of the field of view of the head-up display device 100. When the field of view is expanded, the initial projection area is used as a reference factor.

[0081] Exemplarily, the initial projection area is related to the shape of the windshield glass 200, and the initial projection area of different windshield glasses 200 needs to be set according to actual needs. The shape of the windshield glass 200 of each vehicle model also has differences, and different designs are required for different vehicle models.

[0082] S205, obtaining a first target projection area of the image light beam on the windshield glass according to the initial projection area and the second preset size.

[0083] The area of the first target projection area is less than or equal to the area of the initial projection area. The first target projection area is the projection area of the image light beam on the windshield glass 200 when the eyebox size is reduced to the second preset size. The first target projection area is the projection area of the image light beam on the windshield glass 200 after the field of view is expanded. The first target projection area is set to have an area less than or equal to the area of the initial projection area. This ensures that the use area on the windshield glass 200 does not exceed the original design use area (i.e., the projection area), and ensures the imaging quality.

[0084] It can be understood that by reducing the size of the eyebox 40, the projection area of the image light beam on the windshield glass 200 is reduced. Therefore, there is design space to use a larger field of view without increasing the original projection area. That is, even if a larger field of view is used, the projection area of the image light beam on the windshield glass 200 will not exceed the original space limit. Therefore, a larger field of view can be obtained by reducing the size of the eyebox 40.

[0085] Optionally, the shape and position of the initial projection area and the first target projection area can be set according to actual needs, and the embodiments of the present application do not make specific limitations thereto.

[0086] S206, obtaining a target field of view of the head-up display device according to the first parameter; the first parameter includes the second preset size, the target human eye movement range, the first target projection area, and the size of the light channel, and the second preset size is less than the first preset size.

[0087] The first parameter further includes the first target projection area. The initial projection area is used as a reference factor when expanding the field of view. The first target projection area is obtained according to the initial projection area. The target field of view of the head-up display device is obtained according to the first target projection area, the second preset size, the target human eye movement range, and the size of the light channel.

[0088] Optionally, the target field of view angle includes a target vertical field of view angle and / or a target horizontal field of view angle, the target vertical field of view angle being a field of view angle along a vertical direction, and the target horizontal field of view angle being a field of view angle along a horizontal direction. The second preset vertical dimension corresponds to the target vertical field of view angle, and the second preset horizontal dimension corresponds to the target horizontal field of view angle. When the eyebox size is reduced to the second preset vertical dimension, the field of view angle of the head-up display device 100 is expanded to the target vertical field of view angle, that is, the range along the vertical direction of the field of view angle is expanded. When the eyebox size is reduced to the second preset horizontal dimension, the field of view angle of the head-up display device is expanded to the target horizontal field of view angle, that is, the range along the horizontal direction of the field of view angle is expanded. In other embodiments, the field of view angle can also be expanded along the vertical direction and the horizontal direction at the same time.

[0089] S207, obtaining parameters of the image source and / or parameters of the reflection component according to the first parameter and the target field of view angle.

[0090] The parameters of the image source 10 include an image source output size of the image source 10, which is a use area of the image source 10. In an embodiment, after the field of view angle is expanded, the output size of the image source 10 does not need to be adjusted correspondingly, that is, the image source output size of the image source 10 also remains unchanged.

[0091] The reflection component 20 includes at least one reflection element. The parameters of the reflection component 20 include at least one of the number, position, size and surface type of the reflection element. In the embodiment shown in FIG. 2, the reflection component 20 includes two reflection elements. Both of the two reflection elements are curved mirrors. The number and surface type of the reflection element can be set according to actual needs, which are not limited in the embodiments of the present application.

[0092] The design method of the head-up display device provided by the embodiments of the present application obtains the second preset size of the eyebox after being reduced through the target human eye movement range, obtains the projection area of the image light beam on the windshield glass, expands the field of view angle according to the second preset size, the size of the light channel, the target human eye movement range and the first target projection area, and further adjusts the parameters of the image source and / or the reflection component, so as to ensure that the image light beam can pass through the light channel completely, the target virtual image observed by the driver is expanded, and the field of view angle is expanded.

[0093] FIG. 4 is a flowchart of a third design method of a head-up display device provided by the embodiments of the present application, and with reference to FIG. 4, the design method includes:

[0094] S301, obtaining the size of the light channel and the first preset size of the eyebox.

[0095] S302, obtaining the initial field of view angle of the eyebox under the first preset size.

[0096] S303, acquire a first light ray envelope volume of the head-up display device under the first preset size and the initial field of view angle.

[0097] The light ray envelope volume includes internal light rays of the head-up display device 100 and a volume enveloped by the light rays emitted by the head-up display device 100. The light ray envelope volume includes the first light ray envelope volume and the second light ray envelope volume. The first light ray envelope volume is a light ray envelope volume before the field of view angle of the head-up display device 100 is expanded.

[0098] S304, acquire a second light ray envelope volume of the head-up display device under the second preset size according to the first light ray envelope volume.

[0099] The second light ray envelope volume is a light ray envelope volume after the field of view angle of the head-up display device 100 is expanded.

[0100] S305, under the condition that the field of view angle is the initial field of view angle, reduce the size of the eyebox from the first preset size to the second preset size.

[0101] FIG. 5 is a schematic diagram of an optical path of a first head-up display device provided by an embodiment of the present application. Referring to FIG. 5, the field of view angle is kept unchanged at the initial field of view angle, the light beam L11 is an image light beam when the size of the eyebox is the first preset size and the field of view angle is the initial field of view angle, and the light beam L12 is an image light beam when the size of the eyebox is reduced to the second preset size and the field of view angle is the initial field of view angle. The size of the eyebox is reduced while the field of view angle is kept unchanged, the light ray envelope volume is reduced, and the size of the target virtual image is reduced. The projection area of the light beam L12 on the windshield glass 200 is smaller than the projection area of the light beam L11 on the windshield glass 200. Therefore, there is design space, and a larger field of view angle can be used without increasing the area of the original projection area.

[0102] FIG. 6 is a schematic diagram of an optical path of a second head-up display device provided by an embodiment of the present application. Referring to FIGS. 5 and 6, the size of the reduced eyebox is kept unchanged, and the field of view angle is expanded from the initial field of view angle to the target field of view angle. The light beam L22 is an image light beam when the size of the eyebox is reduced to the second preset size and the field of view angle is expanded to the target field of view angle.

[0103] S306, acquire a target field of view angle of the head-up display device according to a first parameter. The first parameter includes the second preset size, the second light ray envelope volume, and the size of the light channel, and the second preset size is smaller than the first preset size.

[0104] The first parameter further includes a second light ray envelope volume. The eyebox size is reduced, the field of view angle is expanded to a target field of view angle due to the unchanged size of the light channel, the second light ray envelope volume is close to the first light ray envelope volume, the image light beam can be completely transmitted to the driver's eyes through the light channel, the target virtual image size is expanded, the field of view angle is expanded, and the volume of the head-up display device is not increased.

[0105] The design method of the head-up display device provided in the embodiments of the present application obtains the second light ray envelope volume after the eyebox size is adjusted, according to the first light ray envelope volume before the eyebox size is adjusted. The field of view angle of the head-up display device is expanded to a target field of view angle according to the second light ray envelope volume, the second preset size and the size of the light channel, the target virtual image observed by the driver is expanded, and the field of view angle is expanded. The light ray envelope volume is limited in the design process, and the volume of the head-up display device is not increased.

[0106] FIG. 7 is a flowchart of a fourth design method of a head-up display device provided in the embodiments of the present application. Referring to FIG. 7, the design method of the head-up display device includes:

[0107] S401, obtaining the size of the light channel and the first preset size of the eyebox.

[0108] S402, obtaining the initial field of view angle of the eyebox under the first preset size.

[0109] S403, obtaining the target human eye movement range.

[0110] S404, obtaining the initial projection area of the image light beam on the windshield glass at the first preset size.

[0111] S405, obtaining the second target projection area of the image light beam on the windshield glass at the first preset field of view angle according to the initial projection area.

[0112] The area of the second target projection area is less than or equal to the area of the initial projection area. The second target projection area is the projection area of the image light beam on the windshield glass 200 at the first preset field of view angle. The second target projection area is the projection area of the imaging light beam on the windshield glass 200 after the eyebox is expanded. The second target projection area with an area less than or equal to the initial projection area is set. It is ensured that the use area on the windshield glass 200 does not exceed the original designed use area (i.e., the projection area), and the imaging quality is ensured.

[0113] Even if a larger eyebox size is used, the projection area of the image light beam on the windshield glass 200 will not exceed the original space limit. Therefore, a larger eyebox 40 size can be obtained by reducing the field of view angle.

[0114] S406, obtain a target eyebox size of the head-up display device according to the second parameter; the second parameter comprises the first preset field of view angle, the second target projection area, and the size of the light channel, and the first preset field of view angle is smaller than the initial field of view angle.

[0115] The second parameter further comprises the second target projection area. When the eyebox is expanded, the initial projection area is taken as a reference factor. The second target projection area is obtained according to the initial projection area. The target eyebox size of the head-up display device is obtained according to the second target projection area, the second preset size, the target human eye movement range, and the size of the light channel.

[0116] S407, obtain the parameter of the image source and / or the parameter of the reflection component according to the second parameter and the target eyebox size.

[0117] FIG. 8 is a flowchart of a fifth design method of a head-up display device provided by an embodiment of the present application. Referring to FIG. 8, the design method of the head-up display device comprises:

[0118] S501, obtain the size of the light channel and the first preset size of the eyebox.

[0119] S502, obtain the initial field of view angle of the eyebox under the first preset size.

[0120] S503, obtain the first light ray envelope volume of the head-up display device under the first preset size and the initial field of view angle.

[0121] S504, obtain the third light ray envelope volume of the head-up display device under the first preset field of view angle according to the first light ray envelope volume.

[0122] The third light ray envelope volume is the light ray envelope volume obtained after the eyebox of the head-up display device 100 is expanded.

[0123] S505, under the condition that the size of the eyebox is the first preset size, reduce the field of view angle from the initial field of view angle to the first preset field of view angle.

[0124] S506, obtain the target eyebox size of the head-up display device according to the second parameter; the second parameter comprises the first preset field of view angle, the third light ray envelope volume, and the size of the light channel, and the first preset field of view angle is smaller than the initial field of view angle.

[0125] The second parameter further comprises the third light ray envelope volume. After the field of view angle is reduced, the size of the eyebox is expanded to the target eyebox size because the size of the light channel is unchanged. The third light ray envelope volume is close to the first light ray envelope volume, the image light beam can be completely transmitted to the driver's eye through the light channel, the eyebox is expanded, and the volume of the head-up display device is not increased.

[0126] Based on the same technical concept, the application further provides a head-up display device. Referring to FIG. 2, the head-up display device comprises an image source 10, a reflection assembly 20 and a baffle 30. The image source 10 is configured to generate an image light beam and project the image light beam to the reflection assembly 20. The reflection assembly 20 is configured to project the image light beam to the baffle 30 and pass through a light channel formed by an inner cavity of the baffle 30. The head-up display device 100 provided by the application is manufactured by the design method of the head-up display device provided by the above-mentioned embodiments, has the functional modules and beneficial effects corresponding to the design method, and the same parts can be referred to the above description.

[0127] FIG. 9 is a structural schematic diagram of a vehicle provided by an embodiment of the application. Referring to FIG. 9, the vehicle comprises the head-up display device 100 and a windshield 200. The first light beam emitted by the head-up display device 100 is projected to the windshield 200, reflected by the windshield 200 and enters the eyebox of the driver, and a target virtual image is formed in front of the eyebox of the driver. Exemplarily, the first light beam refers to the light beam between the head-up display device 100 and the windshield 200.

[0128] FIG. 10 is a structural schematic diagram of a computer device provided by an embodiment of the application. Referring to FIG. 10, the computer device 80 comprises a memory 802, a processor 801 and a computer program stored in the memory 802 and executable on the processor. The processor 801 implements the method in the above-mentioned embodiments when executing the program. The computer device 80 shown in FIG. 10 is only an example and should not limit the functions and use range of the embodiments of the application. As shown in FIG. 10, the computer device 80 is in a general form. The components of the computer device 80 can include but are not limited to one or more processors 801, a system memory 802 and a bus 803 connecting different system components including the system memory 802 and the processor 801.

[0129] The bus 803 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor or a local bus using any of a variety of bus architectures. For example, these architectures include but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus and Peripheral Component Interconnect (PCI) bus.

[0130] Computer device 80 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by computer device 80 and includes both volatile and non-volatile media, removable and non-removable media.

[0131] The system memory 802 can include computer system readable media in the form of volatile memory, such as random access memory (RAM) 804 and / or cache memory 805. Computer device 80 can further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, a storage system 806 can be provided for reading from and writing to non-removable, non-volatile magnetic media (not shown in FIG. 10 and typically called a "hard drive"). Although not specifically shown, a magnetic disk drive can also be used for reading from and writing to a removable, non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive can be used for reading from or writing to a removable non-volatile optical disk (such as a CD-ROM, DVD-ROM or other optical media). In such instances, each can be connected to bus 803 by one or more data media interfaces. The system memory 802 can include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the application.

[0132] Program / utility 808, having a set (at least one) of program modules 807, can be stored in system memory 802 by way of example, such as an operating system, one or more application programs, other program modules, and program data, each or some combination thereof, can include implementation of a network environment. Program modules 807 generally carry out the functions and / or methodologies of embodiments of the application as described herein.

[0133] [Corrected according to Rule 91 20.03.2025] Computer device 80 can also communicate with one or more external devices 809 such as a keyboard, a pointing device, a display 810, etc.; one or more devices that enable a user to interact with device 80; and / or one or more devices (e.g., network card, modem, etc.) that enable device 80 to communicate with one or more other computing devices. Such communication can occur via Input / Output (I / O) interfaces 811. Still yet, computer device 80 can communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or the Internet) through network adapter 812. As depicted, network adapter 812 communicates with the other components of device 80 via bus 803. It should be understood that, although not shown, other hardware and / or software components could be used in conjunction with device 80. These include, but are not limited to, microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc.

[0134] Processor 801 executes instructions for the operating system, the various applications, and the data processing by the operating system and the applications.

Claims

1. A design method for a head-up display device, the head-up display device comprising an image source, a reflective component, and a baffle, wherein the image source is configured to generate an image beam and project the image beam onto the reflective component, and the inner cavity of the baffle forms a light channel through which the image beam passes; The image light beam passing through the light channel is projected to a windshield, and enters an eyebox after being reflected by the windshield; The design method comprises: obtaining the size of the light channel and a first preset size of the eyebox; obtaining an initial field of view angle of the eyebox under the first preset size; obtaining a target field of view angle of the head-up display device according to a first parameter; the first parameter comprises a second preset size and the size of the light channel, and the second preset size is smaller than the first preset size; alternatively, obtaining a target eyebox size of the head-up display device according to a second parameter; the second parameter comprises a first preset field of view angle and the size of the light channel, and the first preset field of view angle is smaller than the initial field of view angle. 2.The design method of a head-up display device according to claim 1, wherein a target field of view angle of the head-up display device is obtained according to a first parameter. alternatively, after obtaining the target eyebox size of the head-up display device according to the second parameter, the method further comprises: obtaining parameters of the image source and / or parameters of the reflection assembly according to the first parameter and the target field of view angle; alternatively, obtaining parameters of the image source and / or parameters of the reflection assembly according to the second parameter and the target eyebox size.

3. The design method of a head-up display device according to claim 2, wherein, The parameters of the image source comprise an image source output size of the image source.

4. The design method of a head-up display device according to claim 2, wherein The reflection assembly comprises at least one reflection element. The parameters of the reflection assembly comprise at least one of the number, position, size and surface type of the reflection element.

5. The method of designing a head-up display device according to claim 1, wherein a target field of view angle of the head-up display device is obtained according to a first parameter. alternatively, before obtaining the target eyebox size of the head-up display device according to the second parameter, the method further comprises: obtaining a target human eye movement range; the first parameter and the second parameter comprise the target human eye movement range.

6. The design method of the head-up display device according to claim 1, before obtaining the target field of view angle of the head-up display device according to the first parameter, the method further comprises: obtaining an initial projection area of the image light beam on the windshield when the first preset size and the initial field of view angle are obtained; obtaining a first target projection area of the image light beam on the windshield when the second preset size is obtained according to the initial projection area; alternatively, obtaining a second target projection area of the image light beam on the windshield when the first preset field of view angle is obtained according to the initial projection area; wherein the first parameter further comprises the first target projection area, and the second parameter further comprises the second target projection area.

7. The design method of a head-up display device according to claim 6, wherein The area of the first target projection area is smaller than or equal to the area of the initial projection area, and the area of the second target projection area is smaller than or equal to the area of the initial projection area.

8. The design method of a head-up display device according to claim 1, wherein, The second preset size comprises a second preset vertical size and / or a second preset horizontal size; the second preset vertical size is a size of the eyebox in a vertical direction when the eyebox is in the second preset size, and the second preset horizontal size is a size of the eyebox in a horizontal direction when the eyebox is in the second preset size; the target field of view angle comprises a target vertical field of view angle and / or a target horizontal field of view angle; the target vertical field of view angle is a field of view angle in the vertical direction, and the target horizontal field of view angle is a field of view angle in the horizontal direction; The second preset vertical size corresponds to the target vertical field of view angle, and the second preset horizontal size corresponds to the target horizontal field of view angle.

9. The design method of a head-up display device according to claim 8, wherein, The second preset horizontal size is greater than a preset interpupillary distance.

10. The design method of a head-up display device according to claim 8, wherein, The second preset vertical size is greater than or equal to 10 mm, and the second preset horizontal size is greater than or equal to 60 mm.

11. The design method of a head-up display device according to claim 1, wherein, According to a first parameter, a target field of view angle of the head-up display device is obtained, including: Under the condition that the field of view angle is the initial field of view angle, the size of the eyebox is reduced from the first preset size to the second preset size, and according to the second preset size and the size of the light channel, the target field of view angle of the head-up display device is obtained. According to a second parameter, a target eyebox size of the head-up display device is obtained, including: Under the condition that the eyebox size is the first preset size, the field of view angle is reduced from the initial field of view angle to the first preset field of view angle, and according to the first preset field of view angle and the size of the light channel, the target field of view angle of the head-up display device is obtained.

12. The head-up display device design method according to claim 11, wherein a target field of view angle of the head-up display device is acquired according to a first parameter. Alternatively, before obtaining the target eyebox size of the head-up display device according to the second parameter, the method further includes: A first light ray envelope volume of the head-up display device under the first preset size and the initial field of view angle is obtained. According to the first light ray envelope volume, a second light ray envelope volume of the head-up display device under the second preset size is obtained. Alternatively, according to the first light ray envelope volume, a third light ray envelope volume of the head-up display device under the first preset field of view angle is obtained. The first parameter further includes the second light ray envelope volume, and the second parameter further includes the third light ray envelope volume.

13. A head-up display device formed by the design method of the head-up display device according to any one of claims 1-12.

14. A vehicle comprising the head-up display device according to claim 13 and a windshield.

15. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the design method according to any one of claims 1-12 when executing the program.

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