CN114967150A - Vehicle and method for determining optical free-form surface - Google Patents

Vehicle and method for determining optical free-form surface Download PDF

Info

Publication number
CN114967150A
CN114967150A CN202210665843.8A CN202210665843A CN114967150A CN 114967150 A CN114967150 A CN 114967150A CN 202210665843 A CN202210665843 A CN 202210665843A CN 114967150 A CN114967150 A CN 114967150A
Authority
CN
China
Prior art keywords
free
form surface
projector
image
target
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210665843.8A
Other languages
Chinese (zh)
Inventor
刘娟
吴风炎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Group Holding Co Ltd
Original Assignee
Hisense Group Holding Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisense Group Holding Co Ltd filed Critical Hisense Group Holding Co Ltd
Priority to CN202210665843.8A priority Critical patent/CN114967150A/en
Publication of CN114967150A publication Critical patent/CN114967150A/en
Priority to PCT/CN2022/142811 priority patent/WO2023241003A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/23—Head-up displays [HUD]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/60—Instruments characterised by their location or relative disposition in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/80—Arrangements for controlling instruments
    • B60K35/81—Arrangements for controlling instruments for controlling displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/16—Type of output information
    • B60K2360/166—Navigation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/16—Type of output information
    • B60K2360/167—Vehicle dynamics information
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/31—Virtual images
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/77—Instrument locations other than the dashboard
    • B60K2360/785—Instrument locations other than the dashboard on or in relation to the windshield or windows
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0183—Adaptation to parameters characterising the motion of the vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instrument Panels (AREA)

Abstract

The application discloses a vehicle and a method for determining an optical free-form surface, and belongs to the technical field of optics. The method comprises the following steps: the method comprises the steps of determining the image source size required by an optical imaging module based on the size of a virtual image required to be presented by a HUD and the magnification provided by the optical imaging module, determining the image source size capable of being projected by a projector on a diffusion film based on the imaging size of the projector and the image distance of the projector, determining the magnification required by a first free-form surface reflector based on the image source size required by the optical imaging module and the image source size capable of being projected by the projector on the diffusion film, and determining the free-form surface of the first free-form surface reflector based on the magnification required by the first free-form surface reflector. This application designs through the free form surface to first free form surface speculum, makes the projecting apparatus project the proportion of the required image source of image source and the optical imaging module on the diffusion barrier and matches to make the resolution ratio make full use of projecting apparatus.

Description

Vehicle and method for determining optical free-form surface
Technical Field
The application relates to the technical field of optics, in particular to a vehicle and a method for determining an optical free-form surface.
Background
At present, many vehicles have carried the new line Display (HUD), can throw driving information such as navigation information, speed of a motor vehicle on front windshield through HUD, and the driver need not bow just can know important driving information to reduce the potential safety hazard of driving, make the safety that the process of driving is more safe.
In the related art, the HUD mainly includes an image generation module and an optical imaging module. The image generation module comprises a projector, a plane mirror and a diffusion film which are sequentially arranged along a light path. The image generation module is used for providing an image source, and the optical imaging module is used for projecting the image source provided by the image generation module onto a front windshield of the vehicle.
However, the size of the image source required by the optical imaging module is in direct proportion to the image distance of the projector in the image generation module, and when the size of the image source required by the optical imaging module is larger, the image distance of the projector is larger, which results in a larger size of the image generation module, and further results in a larger size of the whole HUD. Moreover, the ratio of the image source projected onto the diffusion film by the projector to the image source required by the optical imaging module is not matched, so that the resolution of the projector cannot be fully utilized.
Disclosure of Invention
The application provides a vehicle and a method for determining an optical free-form surface, which can solve the problems that in the related art, the size of a HUD is large and the resolution of a projector cannot be fully utilized. The technical scheme is as follows:
in one aspect, a vehicle is provided having a heads-up display HUD therein, the HUD including an image generation module and an optical imaging module for projecting an image source provided by the image generation module onto a front windshield of the vehicle to form a virtual image in front of the vehicle; the image generation module comprises a projector, a first free-form surface reflector and a diffusion film which are sequentially arranged along an optical path, and the image distance of the projector is fixed;
the free-form surface of the first free-form surface reflector is determined based on the magnification required by the first free-form surface reflector, the magnification required by the first free-form surface reflector is determined based on the image source size required by the optical imaging module and the image source size which can be projected by the projector on the diffusion film, the image source size which can be projected by the projector on the diffusion film is determined based on the imaging size of the projector and the image distance, and the image source size required by the optical imaging module is determined based on the size of the virtual image required to be presented by the HUD and the magnification which can be provided by the optical imaging module.
In another aspect, a method for determining an optical free-form surface is provided, where a head-up display HUD includes an image generation module and an optical imaging module, where the optical imaging module is configured to project an image source provided by the image generation module onto a front windshield of a vehicle to form a virtual image in front of the vehicle; the image generation module comprises a projector, a first free-form surface reflector and a diffusion film which are sequentially arranged along an optical path, and the image distance of the projector is fixed; the method comprises the following steps:
determining the image source size required by the optical imaging module based on the size of the virtual image required to be presented by the HUD and the magnification provided by the optical imaging module;
determining the size of an image source which can be projected on the diffusion film by the projector based on the imaging size of the projector and the image distance;
determining the magnification required by the first free-form surface reflector based on the image source size required by the optical imaging module and the image source size capable of being projected by the projector on the diffusion film;
and determining the free-form surface of the first free-form surface reflector based on the magnification required by the first free-form surface reflector.
In another aspect, an electronic device is provided, in which a head-up display HUD includes an image generation module and an optical imaging module, the optical imaging module being configured to project an image source provided by the image generation module onto a front windshield of a vehicle to form a virtual image in front of the vehicle; the image generation module comprises a projector, a first free-form surface reflector and a diffusion film which are sequentially arranged along a light path, the image distance of the projector is fixed, the electronic equipment comprises a processor, and the processor is used for:
determining the image source size required by the optical imaging module based on the size of the virtual image required to be presented by the HUD and the magnification provided by the optical imaging module;
determining the size of an image source which can be projected on the diffusion film by the projector based on the imaging size of the projector and the image distance;
determining the magnification required by the first free-form surface reflector based on the image source size required by the optical imaging module and the image source size capable of being projected by the projector on the diffusion film;
and determining the free-form surface of the first free-form surface reflector based on the magnification required by the first free-form surface reflector.
In another aspect, there is provided an apparatus for determining an optical free-form surface, the apparatus including:
the first determining module is used for determining the image source size required by the optical imaging module based on the size of the virtual image required to be presented by the HUD and the magnification provided by the optical imaging module;
the second determination module is used for determining the size of an image source which can be projected on the diffusion film by the projector based on the imaging size of the projector and the image distance;
a third determining module, configured to determine a magnification required by the first free-form surface mirror based on an image source size required by the optical imaging module and an image source size that can be projected by the projector on the diffusion film;
a fourth determining module, configured to determine a free-form surface of the first free-form surface mirror based on a magnification required by the first free-form surface mirror.
In another aspect, a computer-readable storage medium is provided, in which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method for determining an optical free-form surface described above.
In another aspect, a computer program product is provided, which comprises instructions that, when executed on a computer, cause the computer to perform the steps of the method for determining an optical free-form surface described above.
The technical scheme provided by the application can at least bring the following beneficial effects:
because the reflector in the image generation module in the embodiment of the application is the free-form surface reflector, under the condition that the image distance of the projector is fixed, the free-form surface of the first free-form surface reflector can be designed, so that the magnification of the first free-form surface reflector can meet the actually required magnification of the first free-form surface reflector, the ratio of an image source projected onto the diffusion film by the projector through the first free-form surface reflector to an image source required by the optical imaging module is matched, full-page display is achieved, and the resolution of the projector is fully utilized. Moreover, the method provided by the embodiment of the application can determine the image distance of the projector in advance, further enable the appearance design of the HUD to be carried out in advance, and further shorten the design time of the whole HUD.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a complete optical path diagram of a HUD provided by an embodiment of the present application;
fig. 2 is a schematic structural distribution diagram of an image generation module according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a ratio of image sources according to an embodiment of the present application;
fig. 4 is a flowchart of a method for determining an optical free-form surface according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a profile selection interface provided by an embodiment of the present application;
FIG. 6 is a schematic diagram of a parameter setting interface provided in an embodiment of the present application;
FIG. 7 is a schematic diagram of another image source scale provided by an embodiment of the present application;
fig. 8 is a schematic structural diagram of an apparatus for determining an optical free-form surface according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application more clear, the embodiments of the present application will be further described in detail with reference to the accompanying drawings.
Before explaining the method for determining an optical free-form surface provided in the embodiments of the present application in detail, an application scenario related to the embodiments of the present application will be described.
Referring to fig. 1, fig. 1 is a complete optical path diagram of a HUD according to an embodiment of the present disclosure. The HUD mainly comprises an image generation module and an optical imaging module, wherein the image generation module comprises a projector, a first free-form surface reflector and a diffusion film which are sequentially arranged along a light path, and the optical imaging module comprises a second free-form surface reflector and a third free-form surface reflector which are sequentially arranged along the light path. The image generation module is used for providing an image source, and the optical imaging module is used for projecting the image source provided by the image generation module onto a front windshield of the vehicle so as to form a virtual image in front of the vehicle.
Referring to fig. 2, fig. 2 is a schematic structural distribution diagram of an image generation module, in which a projector is located on the left side of a first free-form surface reflector, and a diffusion film is located on the upper portion of the first free-form surface reflector. Of course, the projector and the first free-form surface reflector in the image generation module may also be placed in other manners according to actual situations. The structural distribution diagram of the image generation module shown in fig. 2 is only for better illustrating the structural distribution of the image generation module, and does not constitute a limitation to the embodiment of the present application.
In the embodiment of the present application, the image distance of the projector is fixed. In this case, the free-form surface of the first free-form surface mirror may be designed so that the ratio of the image source projected onto the diffusion film by the projector to the image source required by the optical imaging module is matched, thereby achieving the purpose of making full use of the resolution of the projector, and avoiding the problem of unmatched ratio of the image source shown in fig. 3. Moreover, when the image distance of the projector is small, the size of the image generation module can be reduced, and the purpose of reducing the size of the whole HUD is achieved.
The execution main body of the determination method of the optical free-form surface provided by the embodiment of the application is the electronic equipment. The electronic device can be any electronic product which can be in man-machine interaction with a user through one or more modes of a keyboard, a touch pad, a touch screen, a remote controller, voice interaction or handwriting equipment and the like.
It should be noted that the application scenario and the execution subject described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it is known by a person skilled in the art that with the appearance of a new application scenario and an electronic device, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.
Next, a method for determining an optical free-form surface provided in an embodiment of the present application will be explained in detail.
Fig. 4 is a flowchart of a method for determining an optical free-form surface according to an embodiment of the present application. The head-up display comprises an image generation module and an optical imaging module, wherein the image generation module comprises a projector, a first free-form surface reflector and a diffusion film which are sequentially arranged along a light path, and the image distance of the projector is fixed. The optical imaging module is used for projecting an image source provided by the image generation module onto a front windshield of the vehicle so as to form a virtual image in front of the vehicle. It should be noted that the above description of the image generation module is only an example, and in practical applications, the image generation module may also include more or less other components, or combine some components, or adopt different component arrangements. The embodiment of the present application does not limit this.
Referring to fig. 4, the method includes the following steps.
Step 401: the image source size required by the optical imaging module is determined based on the size of the virtual image to be presented by the HUD and the magnification that the optical imaging module can provide.
In some embodiments, the size of the virtual image that the HUD is required to present includes a horizontal dimension and a vertical dimension, and the magnification that the optical imaging module is capable of providing includes a horizontal magnification and a vertical magnification. In this way, the size of the virtual image required to be presented by the HUD in the horizontal direction may be divided by the magnification of the optical imaging module in the horizontal direction to obtain the size of the image source required by the optical imaging module in the horizontal direction, and the size of the virtual image required to be presented by the HUD in the vertical direction may be divided by the magnification of the optical imaging module in the vertical direction to obtain the size of the image source required by the optical imaging module in the vertical direction.
The size of the virtual image required to be presented by the HUD is set in advance, and the size of the virtual image required to be presented by the HUD is related to the proportion of the virtual image required to be presented by the HUD, wherein the proportion refers to the proportion between the size of the virtual image required to be presented by the HUD in the horizontal direction and the size of the virtual image required to be presented in the vertical direction. For example, the ratio of the virtual image required to be presented by the HUD is 3:1, and in this case, the size of the virtual image required to be presented by the HUD may be 2102 mm × 698 mm, so that the size of the virtual image required to be presented by the HUD in the horizontal direction is 2102 and the size in the vertical direction is 698. And under different conditions, the device can be adjusted according to different requirements.
It should be noted that, before the free-form surface of the first free-form surface mirror is determined, the optical imaging module of the HUD is designed, and since the optical imaging module includes the second free-form surface mirror and the third free-form surface mirror, the magnification that the optical imaging module can provide can be determined based on the magnification of the second free-form surface mirror and the magnification of the third free-form surface mirror, and the magnification includes the magnification in the horizontal direction and the magnification in the vertical direction. For example, the optical imaging module has a horizontal magnification of 29.4 times and a vertical magnification of 20 times.
For ease of understanding, the determination of the size of the image source required for the optical imaging module will now be described by way of example. For example, the size of the virtual image required to be presented by the HUD is 2102 mm × 698 mm, that is, the size of the virtual image required to be presented by the HUD is 2102 in the horizontal direction and 698 in the vertical direction. The optical imaging module has a horizontal magnification of 29.4 times and a vertical magnification of 20 times. In this case, the size of the image source required for the optical imaging module in the horizontal direction is 2102 ÷ 29.4 ≈ 71.5, and the size of the image source required for the optical imaging module in the vertical direction is 698 ÷ 20 ≈ 35, and in this case, the size of the image source required for the optical imaging module can be determined to be 71.5 mm × 35 mm.
It should be noted that the above description of the optical imaging module is only an example, and in practical applications, the optical imaging module may also include more or less other components, or combine some components, or adopt different component arrangements. The embodiment of the present application does not limit this.
Step 402: and determining the size of an image source which can be projected on the diffusion film by the projector based on the imaging size of the projector and the image distance of the projector.
In some embodiments, the size of the image source that the projector can project on the diffuser film may be determined according to a correlation algorithm based on the imaging size of the projector and the image distance of the projector. The embodiment of the present application does not limit the algorithm.
The imaging size of the projector is preset, and is related to the specification of the DMD (Digital Micromirror Device) inside the projector, for example, the imaging ratio of the DMD inside the projector may be 16:9, which is similar to the above ratio, and is the ratio between the size of the image in the horizontal direction and the size of the image in the vertical direction. And under different conditions, the device can be adjusted according to different requirements. The image distance of the projector is the distance between the vertex of the lens of the projector and the image plane, and the image plane is the plane on which the object plane of the projector can be clearly imaged through the lens of the projector.
The image distance of the projector is the minimum value in a target image distance range, which is an image distance range in which no aberration occurs. The target image distance range is set in advance and is related to optical structure parameters in the projector. As an example, the target image distance range may be set to 90 mm to 130 mm, with the image distance of the projector being 90 mm.
In some embodiments, the light beam emitted from the optical axis of the projector is reflected by the first free-form surface mirror and then enters perpendicular to the center of the diffusion film, and at this time, the image plane of the projector coincides with the diffusion film, so that the image distance of the projector is the sum of the distance from the lens of the projector to the first free-form surface mirror, and the distance from the first free-form surface mirror to the diffusion film.
In other embodiments, the light beam emitted from the projector lens is reflected by the first free-form surface reflector and then obliquely incident on the diffusion film at an angle, such as 8 degrees to 20 degrees, in consideration of the problem of sunlight backflow. At this time, since the light beam emitted from the projector and propagating along the optical axis is incident on the diffusion film with a certain inclination angle, and the image plane of the projector and the diffusion film are not overlapped, the image distance of the projector is the sum of the distance from the projector lens to the first free-form surface mirror, and the distance from the first free-form surface mirror to the image plane, at which the light beam vertically enters the image plane.
Step 403: the magnification required by the first free-form surface mirror is determined based on the image source size required by the optical imaging module and the image source size that the projector can project on the diffuser film.
In some embodiments, the desired source size for the optical imaging module includes a horizontal dimension and a vertical dimension, and the source size that the projector can project on the diffuser film includes a horizontal dimension and a vertical dimension. In this way, the size of the image source in the horizontal direction required for the optical imaging module may be divided by the size of the image source in the horizontal direction that can be projected by the projector on the diffusion film to obtain the magnification required for the first free-form surface mirror in the horizontal direction, the size of the image source in the vertical direction required for the optical imaging module may be divided by the size of the image source in the vertical direction that can be projected by the projector on the diffusion film to obtain the magnification required for the first free-form surface mirror in the vertical direction, and the magnification required for the first free-form surface mirror may be determined based on the magnification required for the first free-form surface mirror in the horizontal direction and the magnification required for the first free-form surface mirror in the vertical direction.
For example, the size of the image source required by the optical imaging module is 71.5 mm × 35 mm, that is, the size of the image source required by the optical imaging module in the horizontal direction is 71.5 and the size in the vertical direction is 35. The size of the image source that the projector can project on the diffusion film is 67 mm × 37.8 mm, that is, the size of the image source that the projector can project on the diffusion film is 67 in the horizontal direction and 37.8 in the vertical direction. In this case, the magnification required for the first free-form surface mirror in the horizontal direction is 71.5 ÷ 67 ≈ 1.07, and the magnification required for the first free-form surface mirror in the vertical direction is 35 ÷ 37.8 ≈ 0.925, and in this case, it can be determined that the magnification required for the first free-form surface mirror in the horizontal direction is 1.07 times and the magnification required in the vertical direction is 0.925 times.
Step 404: the free-form surface of the first free-form surface mirror is determined based on a magnification required for the first free-form surface mirror.
Determining a target free-form surface equation, wherein each polynomial coefficient in the target free-form surface equation is unknown, determining each polynomial coefficient in the target free-form surface equation by taking the target polynomial coefficient in the target free-form surface equation as a variable based on the magnification required by the first free-form surface reflector, wherein the target polynomial coefficient refers to the polynomial coefficient influencing the magnification of the surface in the target free-form surface equation, and determining the free-form surface represented by the target free-form surface equation with the known polynomial coefficient as the free-form surface of the first free-form surface reflector.
In some embodiments, the electronic device may display a surface type selection interface including a plurality of surface type information indicating a free-form surface equation satisfied by a free-form surface, display a parameter setting interface in response to a selection operation of target surface type information, the target surface type information being one of a plurality of surface type information included in the surface type selection interface, acquire a number of polynomial coefficients input in the parameter setting interface, and determine a target free-form surface equation based on the free-form surface equation indicated by the target surface type information and the number of polynomial coefficients input in the parameter setting interface.
Since the electronic device stores the corresponding relationship between the surface type information and the free-form surface equation, in some embodiments, after the electronic device displays the surface type selection interface, the user may select the target surface type information from the plurality of surface type information as the surface type corresponding to the free-form surface of the first free-form surface reflector, at this time, the user may trigger the selection operation of the target surface type information, the electronic device receives the selection operation of the target surface type information triggered by the user, displays the parameter setting interface corresponding to the target surface type, at this time, the user may set the number of polynomial coefficients in the parameter setting interface, the electronic device determines the free-form surface equation corresponding to the target surface type from the corresponding relationship between the surface type information and the free-form surface equation based on the target surface type information, and further determines the free-form surface equation corresponding to the target surface type information based on the number of polynomial coefficients and the free-form surface equation corresponding to the target surface type information, and determining a target free-form surface equation according to a correlation algorithm.
In some embodiments, the electronic device stores a correspondence between the free form surface equation and polynomial coefficients in the free form surface equation that affect the magnification of the surface, and, therefore, after determining the target free-form surface equation, the electronic device may determine, based on the target free-form surface equation, a corresponding polynomial coefficient from a correspondence between the free-form surface equation and a polynomial coefficient affecting the magnification of the surface in the free-form surface equation as the target polynomial coefficient in the target free-form surface equation, and take the target polynomial coefficient in the target free-form surface equation as a variable, further based on the magnification factor needed by the first free-form surface reflector, determining each polynomial coefficient in the target free equation according to the correlation algorithm, and determining the free-form surface represented by the target free-form surface equation with known polynomial coefficients as the free-form surface of the first free-form surface reflector.
In other embodiments, the parameter setting interface is further configured to set a variable in a free-form surface equation, and a user may set a target polynomial coefficient as the variable in a target free-form surface equation through the parameter setting interface. Therefore, after the user inputs the number of polynomial coefficients in the parameter setting interface, the target polynomial coefficients in the target free-form surface equation may also be set in the parameter setting interface. At this time, the electronic device determines a free-form surface equation corresponding to the target surface type from a corresponding relationship between the surface type information and the free-form surface equation based on the target surface type information, further determines the target free-form surface equation according to a correlation algorithm based on the number of the polynomial coefficients and the free-form surface equation corresponding to the target surface type information, further determines each polynomial coefficient in the target free-form surface equation according to the correlation algorithm based on the magnification factor required by the first free-form surface reflector and the target polynomial coefficient serving as a variable in the target free-form surface equation, and further determines the free-form surface represented by the target free-form surface equation of which the polynomial coefficient is known as the free-form surface of the first free-form surface reflector.
It should be noted that the parameter setting interface may set the number of polynomial coefficients of the free-form surface equation and the target polynomial coefficients serving as variables in the target free-form surface equation, and of course, the parameter setting interface may also set other parameters of the free-form surface, which is not limited in this embodiment of the present application.
Wherein the plurality of surface type information are set in advance, and the plurality of surface type information may be set as an expansion polynomial, a quadric surface, an expansion aspherical surface, and an odd aspherical surface. And under different conditions, the device can be adjusted according to different requirements.
For ease of understanding, the determination process of the free form surface of the first free-form surface mirror will now be described by way of example. For example, referring to fig. 5, the electronic device may display a surface type selection interface as shown in fig. 5, the user may select an expansion polynomial from the plurality of surface type information as a surface type corresponding to the free-form surface of the first free-form surface mirror, at this time, the user may trigger a selection operation of the expansion polynomial, and the electronic device receives the selection operation of the expansion polynomial triggered by the user, and displays a parameter setting interface corresponding to the expansion polynomial. Since the 3 rd and 5 th terms of the coefficients in the free-form surface equation indicated by the expansion polynomial are related to the magnification of the free-form surface, the number of coefficients of the polynomial should be equal to or greater than 5. Referring to fig. 6, the user can set the number of polynomial coefficients to 5 in the parameter setting interface shown in fig. 6, and the free-form surface equation indicated by the extended polynomial is the following formula (1).
Figure BDA0003691615960000101
Wherein, in the above formula (1), z is the rise of the free-form surface in the z-axis direction, x is the rise of the free-form surface in the x-axis direction, y is the rise of the free-form surface in the y-axis direction, c is the curvature of the surface, r is the radial coordinate of the lens unit, k is the conic coefficient, N is the number of polynomial coefficients, is an unknown quantity, A i The coefficients of the polynomial are expanded for the ith term.
In the embodiment of the present application, after determining the free-form surface equation indicated by the extended polynomial, c and k in formula (1) are set to 0, and therefore, the electronic apparatus determines the target free-form surface equation to be the following formula (2) according to the correlation algorithm based on the number of coefficients of the polynomial and the free-form surface equation indicated by the extended polynomial.
z＝C 1 x+C 2 y+C 3 x 2 +C 4 xy+C 5 y 2 (2)
Wherein, in the above formula (2), z is a rise of the free-form surface in the z-axis direction, x is a rise of the free-form surface in the x-axis direction, y is a rise of the free-form surface in the y-axis direction, and C 1 、C 2 、C 3 、C 4 And C 5 For each polynomial in the free-form surface equationAnd (4) the coefficient.
The electronic equipment stores polynomial coefficients influencing the magnification of the curved surface. Thus, the electronic device may determine a target polynomial coefficient in the target free-form surface equation to be C based on the stored polynomial coefficients affecting the surface magnification 3 And C 5 And C is 3 And C 5 As variables, respective polynomial coefficients in the target free-form surface equation are determined in accordance with a correlation algorithm based on the magnification required by the first free-form surface mirror in the horizontal direction being 1.07 times, the magnification required in the vertical direction being 0.925 times, and the target polynomial coefficients in the target free-form surface equation of the variables, wherein C 1 、C 2 、C 4 Is 0, C 3 Is-116.652, C 5 Is-50.122, and the free-form surface characterized by the target free-form surface equation for which the polynomial coefficients are known is determined to be the free-form surface of the first free-form surface mirror.
It should be noted that the above examples of the surface type selection interface and the parameter setting interface are only for better explaining the process of determining the free-form surface of the first free-form surface mirror, and constitute a limitation on the embodiments of the present application.
The method provided by the embodiment of the application can be used for simulating through optical simulation software deployed by the electronic equipment. For example, the optical simulation software may be Zemax. At this time, the amplification effect of the first free-form surface mirror can be simulated by optical simulation software. For example, referring to fig. 7, by performing simulation with optical simulation software, it can be seen that the image source projected onto the diffusion film by the projector through the first free-form surface reflector completely coincides with the image source required by the optical imaging module, so as to achieve full-scale display.
Because the reflector in the image generation module in the embodiment of the application is the free-form surface reflector, under the condition that the image distance of the projector is fixed, the free-form surface of the first free-form surface reflector can be designed, so that the magnification of the first free-form surface reflector can meet the actually required magnification of the first free-form surface reflector, the ratio of an image source projected onto the diffusion film by the projector through the first free-form surface reflector to an image source required by the optical imaging module is matched, full-page display is achieved, and the resolution of the projector is fully utilized. Moreover, the method provided by the embodiment of the application can determine the image distance of the projector in advance, further enable the appearance design of the HUD to be carried out in advance, and further shorten the design time of the whole HUD. In addition, the method of the embodiment of the application can also reduce the image distance of the projector, further reduce the distance of light walking, enable the structure of the image generation module of the HUD to be more compact, further reduce the volume of the image generation module, and further achieve the purpose of reducing the volume of the whole HUD.
The embodiment of the application provides a vehicle, wherein a head-up display (HUD) is arranged in the vehicle, the HUD comprises an image generation module and an optical imaging module, and the optical imaging module is used for projecting an image source provided by the image generation module onto a front windshield of the vehicle so as to form a virtual image in front of the vehicle; the image generation module comprises a projector, a first free-form surface reflector and a diffusion film which are sequentially arranged along a light path, and the image distance of the projector is fixed.
The free-form surface of the first free-form surface reflector is determined based on the magnification required by the first free-form surface reflector, the magnification required by the first free-form surface reflector is determined based on the image source size required by the optical imaging module and the image source size which can be projected by the projector on the diffusion film, the image source size which can be projected by the projector on the diffusion film is determined based on the imaging size and the image distance of the projector, and the image source size required by the optical imaging module is determined based on the size of a virtual image required to be presented by the HUD and the magnification which can be provided by the optical imaging module.
It should be noted that: the process for determining the free-form surface of the first free-form surface reflector in the vehicle provided by the above embodiment and the method embodiment for determining the optical free-form surface belong to the same concept, and the specific implementation process is described in the method embodiment and is not described herein again.
Fig. 8 is a schematic structural diagram of an apparatus for determining an optical free-form surface according to an embodiment of the present disclosure, where the apparatus for determining an optical free-form surface may be implemented as part or all of an electronic device by software, hardware, or a combination of the two. Referring to fig. 8, the apparatus includes: a first determination module 801, a second determination module 802, a third determination module 803, and a fourth determination module 804.
The first determining module 801 is configured to determine an image source size required by the optical imaging module based on a size of a virtual image to be presented by the HUD and a magnification ratio that can be provided by the optical imaging module. For the detailed implementation process, reference is made to corresponding contents in the above embodiments, and details are not repeated here.
And a second determining module 802, configured to determine, based on the imaging size of the projector and the image distance of the projector, the size of the image source that can be projected by the projector on the diffusion film. For the detailed implementation process, reference is made to corresponding contents in the above embodiments, and details are not repeated here.
A third determining module 803, configured to determine a magnification required by the first free-form surface mirror based on the image source size required by the optical imaging module and the image source size that can be projected by the projector on the diffusion film. For the detailed implementation process, reference is made to corresponding contents in the above embodiments, and details are not repeated here.
A fourth determining module 804, configured to determine a free-form surface of the first free-form surface mirror based on a magnification required by the first free-form surface mirror. For the detailed implementation process, reference is made to corresponding contents in the above embodiments, and details are not repeated here.
Optionally, the fourth determining module 804 includes:
the first determining unit is used for determining a target free-form surface equation, wherein each polynomial coefficient in the target free-form surface equation is unknown;
the second determining unit is used for determining each polynomial coefficient in the target free-form surface equation by taking the target polynomial coefficient in the target free-form surface equation as a variable based on the magnification required by the first free-form surface reflector, wherein the target polynomial coefficient refers to the polynomial coefficient influencing the magnification of the curved surface in the target free-form surface equation;
and the third determining unit is used for determining the free-form surface represented by the target free-form surface equation with known polynomial coefficients as the free-form surface of the first free-form surface reflector.
Optionally, the first determining unit is specifically configured to:
displaying a surface type selection interface, wherein the surface type selection interface comprises a plurality of surface type information, and the surface type information is used for indicating a free-form surface equation satisfied by a free-form surface;
responding to the selection operation of target face type information, and displaying a parameter setting interface, wherein the target face type information is one of a plurality of face type information;
acquiring the number of polynomial coefficients input in a parameter setting interface;
and determining the target free-form surface equation based on the free-form surface equation indicated by the target surface type information and the number of polynomial coefficients input in the parameter setting interface.
Optionally, the image distance of the projector is a minimum value within a target image distance range, which is an image distance range in which no aberration occurs.
Optionally, the image distance of the projector is 90 mm.
Optionally, the optical imaging module includes a second free-form surface reflector and a third free-form surface reflector sequentially arranged along the optical path.
Because the reflector in the image generation module in the embodiment of the application is the free-form surface reflector, under the condition that the image distance of the projector is fixed, the free-form surface of the first free-form surface reflector can be designed, so that the magnification of the first free-form surface reflector can meet the actually required magnification of the first free-form surface reflector, the ratio of an image source projected onto the diffusion film by the projector through the first free-form surface reflector to an image source required by the optical imaging module is matched, full-page display is achieved, and the resolution of the projector is fully utilized. Moreover, the method provided by the embodiment of the application can determine the image distance of the projector in advance, further enable the appearance design of the HUD to be carried out in advance, and further shorten the design time of the whole HUD. In addition, the method of the embodiment of the application can also reduce the image distance of the projector, further reduce the distance of light walking, enable the structure of the image generation module of the HUD to be more compact, further reduce the volume of the image generation module, and further achieve the purpose of reducing the volume of the whole HUD.
It should be noted that: in the determining apparatus for an optical free-form surface provided in the above embodiment, when determining a free-form surface, only the division of the above functional modules is exemplified, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the apparatus is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the determining apparatus for an optical free-form surface and the determining method embodiment for an optical free-form surface provided in the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments in detail and are not described herein again.
Fig. 9 is a block diagram of an electronic device 900 according to an embodiment of the present disclosure. The electronic device 900 may be a portable mobile electronic device. The electronic device 900 may also be referred to by other names such as user equipment, portable terminals, laptop terminals, desktop terminals, and the like.
In general, the electronic device 900 includes: a processor 901 and a memory 902.
Processor 901 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so forth. The processor 901 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). Processor 901 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in a wake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 901 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 901 may further include an AI (Artificial Intelligence) processor for processing computing operations related to machine learning.
Memory 902 may include one or more computer-readable storage media, which may be non-transitory. The memory 902 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in the memory 902 is used to store at least one instruction for execution by the processor 901 to implement the method for determining an optical free form surface provided by the method embodiments herein.
In some embodiments, the electronic device 900 may further optionally include: a peripheral interface 903 and at least one peripheral. The processor 901, memory 902, and peripheral interface 903 may be connected by buses or signal lines. Each peripheral may be connected to the peripheral interface 903 by a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of radio frequency circuitry 904, touch screen display 905, and power supply 906.
The peripheral interface 903 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 901 and the memory 902. In some embodiments, the processor 901, memory 902, and peripheral interface 903 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 901, the memory 902 and the peripheral interface 903 may be implemented on a separate chip or circuit board, which is not limited by this embodiment.
The Radio Frequency circuit 904 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 904 communicates with communication networks and other communication devices via electromagnetic signals. The radio frequency circuit 904 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 904 comprises: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuitry 904 may communicate with other electronic devices via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: the world wide web, metropolitan area networks, intranets, generations of mobile communication networks (2G, 3G, 4G, and 5G), Wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the radio frequency circuit 904 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.
The display screen 905 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 905 is a touch display screen, the display screen 905 also has the ability to capture touch signals on or over the surface of the display screen 905. The touch signal may be input to the processor 901 as a control signal for processing. At this point, the display 905 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display screen 905 may be one, providing the front panel of the electronic device 900; in other embodiments, the number of the display panels 905 may be at least two, and the at least two display panels are respectively disposed on different surfaces of the electronic device 900 or are in a folding design; in still other embodiments, the display 905 may be a flexible display disposed on a curved surface or on a folded surface of the electronic device 900. Even more, the display 905 may be arranged in a non-rectangular irregular pattern, i.e., a shaped screen. The Display panel 905 can be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and other materials.
The power supply 906 is used to power the various components in the electronic device 900. The power source 906 may be alternating current, direct current, disposable batteries, or rechargeable batteries. When the power source 906 comprises a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.
Those skilled in the art will appreciate that the configuration shown in fig. 9 does not constitute a limitation of the electronic device 900, and may include more or fewer components than those shown, or combine certain components, or employ a different arrangement of components.
In some embodiments, a computer-readable storage medium is also provided, in which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the method for determining an optical free-form surface in the above embodiments. For example, the computer readable storage medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
It is noted that the computer-readable storage medium referred to in the embodiments of the present application may be a non-volatile storage medium, in other words, a non-transitory storage medium.
It should be understood that all or part of the steps for implementing the above embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The computer instructions may be stored in the computer-readable storage medium described above.
That is, in some embodiments, there is also provided a computer program product containing instructions which, when run on a computer, cause the computer to perform the steps of the method for determining an optical free-form surface described above.
It is to be understood that reference herein to "at least one" means one or more and "a plurality" means two or more. In the description of the embodiments of the present application, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.
It should be noted that the information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.) and signals referred to in the embodiments of the present application are authorized by the user or fully authorized by various parties, and the collection, use and processing of the relevant data need to comply with relevant laws and regulations and standards in relevant countries and regions. For example, the size of the virtual image to be presented by the HUD, the magnification provided by the optical imaging module, the imaging size of the projector, and the image distance of the projector involved in the embodiments of the present application are all obtained with sufficient authorization.
The above-mentioned embodiments are provided not to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A vehicle having a heads-up display (HUD) therein, the HUD comprising an image generation module and an optical imaging module for projecting an image source provided by the image generation module onto a front windshield of the vehicle to form a virtual image in front of the vehicle; the image generation module comprises a projector, a first free-form surface reflector and a diffusion film which are sequentially arranged along an optical path, and the image distance of the projector is fixed;
the free-form surface of the first free-form surface reflector is determined based on the magnification required by the first free-form surface reflector, the magnification required by the first free-form surface reflector is determined based on the image source size required by the optical imaging module and the image source size which can be projected by the projector on the diffusion film, the image source size which can be projected by the projector on the diffusion film is determined based on the imaging size of the projector and the image distance, and the image source size required by the optical imaging module is determined based on the size of the virtual image required to be presented by the HUD and the magnification which can be provided by the optical imaging module.
2. The vehicle of claim 1, wherein the image distance of the projector is a minimum value within a target image distance range, the target image distance range being an image distance range in which no aberration occurs.
3. The vehicle of claim 1, wherein the image distance of the projector is 90 millimeters.
4. The vehicle of claim 1, wherein the optical imaging module comprises a second free-form surface mirror and a third free-form surface mirror arranged in sequence along the optical path.
5. The method for determining the optical free-form surface is characterized in that the head-up display HUD comprises an image generation module and an optical imaging module, wherein the optical imaging module is used for projecting an image source provided by the image generation module onto a front windshield of a vehicle so as to form a virtual image in front of the vehicle; the image generation module comprises a projector, a first free-form surface reflector and a diffusion film which are sequentially arranged along an optical path, and the image distance of the projector is fixed; the method comprises the following steps:
determining the image source size required by the optical imaging module based on the size of the virtual image required to be presented by the HUD and the magnification provided by the optical imaging module;
determining the size of an image source which can be projected on the diffusion film by the projector based on the imaging size of the projector and the image distance;
determining the magnification required by the first free-form surface reflector based on the image source size required by the optical imaging module and the image source size which can be projected by the projector on the diffusion film;
and determining the free-form surface of the first free-form surface reflector based on the magnification required by the first free-form surface reflector.
6. The method of claim 5, wherein said determining the free-form surface of the first free-form surface mirror based on the magnification required for the first free-form surface mirror comprises:
determining a target free-form surface equation, wherein each polynomial coefficient in the target free-form surface equation is unknown;
determining each polynomial coefficient in the target free-form surface equation by taking the target polynomial coefficient in the target free-form surface equation as a variable based on the magnification required by the first free-form surface reflector, wherein the target polynomial coefficient refers to the polynomial coefficient influencing the magnification of the surface in the target free-form surface equation;
and determining a free-form surface characterized by a target free-form surface equation with known polynomial coefficients as the free-form surface of the first free-form surface reflector.
7. The method of claim 6, wherein the determining a target free-form surface equation comprises:
displaying a surface type selection interface, wherein the surface type selection interface comprises a plurality of surface type information, and the surface type information is used for indicating a free-form surface equation met by a free-form surface;
responding to the selection operation of target surface type information, and displaying a parameter setting interface, wherein the target surface type information is one of the plurality of surface type information;
acquiring the number of polynomial coefficients input in the parameter setting interface;
and determining the target free-form surface equation based on the free-form surface equation indicated by the target surface type information and the number of polynomial coefficients input in the parameter setting interface.
8. The method of any of claims 5-7, wherein the image distance of the projector is a minimum value within a target image distance range, the target image distance range being an image distance range in which no aberration occurs.
9. The method of claim 8, wherein the image distance of the projector is 90 millimeters.
10. The method of claim 5, wherein the optical imaging module comprises a second free-form surface mirror and a third free-form surface mirror arranged in series along the optical path.
CN202210665843.8A 2022-06-13 2022-06-13 Vehicle and method for determining optical free-form surface Pending CN114967150A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202210665843.8A CN114967150A (en) 2022-06-13 2022-06-13 Vehicle and method for determining optical free-form surface
PCT/CN2022/142811 WO2023241003A1 (en) 2022-06-13 2022-12-28 Vehicle, method for determining surface type of reflector, and method for determining optical free-form surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210665843.8A CN114967150A (en) 2022-06-13 2022-06-13 Vehicle and method for determining optical free-form surface

Publications (1)

Publication Number Publication Date
CN114967150A true CN114967150A (en) 2022-08-30

Family

ID=82961592

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210665843.8A Pending CN114967150A (en) 2022-06-13 2022-06-13 Vehicle and method for determining optical free-form surface

Country Status (1)

Country Link
CN (1) CN114967150A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023241003A1 (en) * 2022-06-13 2023-12-21 海信集团控股股份有限公司 Vehicle, method for determining surface type of reflector, and method for determining optical free-form surface

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101271254A (en) * 2007-03-22 2008-09-24 中华映管股份有限公司 Projection display
CN105371199A (en) * 2014-09-01 2016-03-02 现代摩比斯株式会社 Head lamp for car
CN105652439A (en) * 2016-03-25 2016-06-08 北京理工大学 Combined power-amplification imaging objective lens system design method
CN205880369U (en) * 2016-06-13 2017-01-11 刘涛 Utilize car windscreen to realize equipment that comes back and show
CN106918913A (en) * 2017-04-01 2017-07-04 北京铅笔视界科技有限公司 A kind of nearly eye display optical system of free form surface off axis reflector and method for building up
CN108459457A (en) * 2017-02-21 2018-08-28 宁波舜宇车载光学技术有限公司 Image system and its image adjusting method
CN108535869A (en) * 2017-03-06 2018-09-14 矢崎总业株式会社 Show image projecting equipment and display image projection system
CN109581667A (en) * 2019-01-10 2019-04-05 延锋伟世通电子科技（上海）有限公司 A kind of optical projection apparatus for vehicle-mounted head-up display
CN110412764A (en) * 2018-04-28 2019-11-05 宁波舜宇车载光学技术有限公司 Head-up display and its design method
CN110908098A (en) * 2019-11-11 2020-03-24 中国科学院上海技术物理研究所 Large-view-field distortion-eliminating off-axis reflection optical system and design method
CN114445605A (en) * 2022-02-22 2022-05-06 海信集团控股股份有限公司 Free-form surface simulation method and device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101271254A (en) * 2007-03-22 2008-09-24 中华映管股份有限公司 Projection display
CN105371199A (en) * 2014-09-01 2016-03-02 现代摩比斯株式会社 Head lamp for car
CN105652439A (en) * 2016-03-25 2016-06-08 北京理工大学 Combined power-amplification imaging objective lens system design method
CN205880369U (en) * 2016-06-13 2017-01-11 刘涛 Utilize car windscreen to realize equipment that comes back and show
CN108459457A (en) * 2017-02-21 2018-08-28 宁波舜宇车载光学技术有限公司 Image system and its image adjusting method
CN108535869A (en) * 2017-03-06 2018-09-14 矢崎总业株式会社 Show image projecting equipment and display image projection system
CN106918913A (en) * 2017-04-01 2017-07-04 北京铅笔视界科技有限公司 A kind of nearly eye display optical system of free form surface off axis reflector and method for building up
CN110412764A (en) * 2018-04-28 2019-11-05 宁波舜宇车载光学技术有限公司 Head-up display and its design method
CN109581667A (en) * 2019-01-10 2019-04-05 延锋伟世通电子科技（上海）有限公司 A kind of optical projection apparatus for vehicle-mounted head-up display
CN110908098A (en) * 2019-11-11 2020-03-24 中国科学院上海技术物理研究所 Large-view-field distortion-eliminating off-axis reflection optical system and design method
CN114445605A (en) * 2022-02-22 2022-05-06 海信集团控股股份有限公司 Free-form surface simulation method and device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023241003A1 (en) * 2022-06-13 2023-12-21 海信集团控股股份有限公司 Vehicle, method for determining surface type of reflector, and method for determining optical free-form surface

Similar Documents

Publication Publication Date Title
CN107924216B (en) Foldable electronic device including hidden display and information display method thereof
US10694175B2 (en) Real-time automatic vehicle camera calibration
CN109948581B (en) Image-text rendering method, device, equipment and readable storage medium
CN110865388A (en) Combined calibration method and device for camera and laser radar and storage medium
CN108701372B (en) Image processing method and device
CN113009690A (en) Image display method, near-to-eye display device and apparatus
CN111553050B (en) Structure checking method and device for automobile steering system and storage medium
KR20130119256A (en) Touch screen panel and manufacturing method thereof
CN114967150A (en) Vehicle and method for determining optical free-form surface
CN108909717B (en) Method and device for determining lightweight level of electric vehicle, and storage medium
EP4273830A1 (en) Method and apparatus for monitoring vehicle driving information
US11537213B2 (en) Character recommending method and apparatus, and computer device and storage medium
WO2024099134A1 (en) Method and apparatus for displaying information on instrument screen, and electronic device and vehicle
CN112116681A (en) Image generation method and device, computer equipment and storage medium
KR20150117467A (en) Electronic Apparatus and Method for Providing of External Environment Information
CN112874301A (en) Information display method and device for automobile and computer storage medium
CN114445605A (en) Free-form surface simulation method and device
CN115407511A (en) Vehicle and method for determining surface shape of reflector
CN115658857A (en) Intelligent dialogue method, device, equipment and storage medium
KR101772079B1 (en) Touch screen panel and manufacturing method thereof
CN116954597A (en) Form page generation method and device, electronic equipment, storage medium and product
CN113408809A (en) Automobile design scheme evaluation method and device and computer storage medium
KR102488359B1 (en) Method and apparatus for processing lexical database
CN111596925A (en) Method, apparatus, computer device and medium for automatically generating code
CN111572547A (en) Method and device for controlling lane change of automobile and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination