CN116107091A - Display system, automobile and control method - Google Patents
Display system, automobile and control method Download PDFInfo
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- CN116107091A CN116107091A CN202211654527.7A CN202211654527A CN116107091A CN 116107091 A CN116107091 A CN 116107091A CN 202211654527 A CN202211654527 A CN 202211654527A CN 116107091 A CN116107091 A CN 116107091A
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- 238000004590 computer program Methods 0.000 description 10
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Classifications
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- 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—Arrangement of adaptations of instruments
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
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- 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
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
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- 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
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
- G02B27/0037—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration with diffracting elements
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- 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
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- 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
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0944—Diffractive optical elements, e.g. gratings, holograms
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- 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
- G02B27/10—Beam splitting or combining systems
- G02B27/1086—Beam splitting or combining systems operating by diffraction only
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- 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
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
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- 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
- G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
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- 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
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
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- 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
- G02B2027/0192—Supplementary details
- G02B2027/0196—Supplementary details having transparent supporting structure for display mounting, e.g. to a window or a windshield
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The embodiment of the application provides a display system, an automobile and a control method, comprising the following steps: front windshield, diffraction film and projection unit; the diffraction film is arranged on the inner side surface of the front windshield; the projection unit is arranged on one side of the inner side surface and is used for projecting incident light corresponding to the projected image to the diffraction film; the diffraction film is used for reflecting part of the incident light rays so that the incident light rays reflected by the diffraction film are projected to a target area, a virtual image corresponding to the projected image is formed in a user field of view by the incident light rays reflected by the diffraction film, and the diffraction film is used for diffracting the incident light rays passing through the diffraction film and entering the front windshield.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a display system, an automobile and a control method.
Background
The Display system (Head Up Display, HUD), also called parallel Display system, its most important function is to the important information such as speed of a hour, navigation, etc. on the windshield in front of the driver of projection, let the driver accomplish as far as possible not to hang down, just can see important driving information such as speed of a hour, navigation, etc. without turning round, guarantee the stability that the driver driven, put more energy on observing the road conditions.
In some scenes, driving information is displayed on the front windshield through a virtual image principle, so that a driver does not look at the instrument panel at low head in the driving process. Due to the thickness of the front windshield, the thickness of the front windshield is equivalent to that of two reflecting surfaces, and after light rays are reflected by the two reflecting surfaces, two virtual images can be formed, so that image ghosts are caused, and the imaging quality of the HUD is seriously affected.
Disclosure of Invention
The embodiment of the application aims to provide a display system, an automobile and a control method, so as to solve the problem of poor HUD imaging quality.
In order to solve the above technical problems, embodiments of the present application are implemented as follows:
in a first aspect, embodiments of the present application provide a display system, including: front windshield, diffraction film and projection unit; the diffraction film is arranged on the inner side surface of the front windshield; the projection unit is arranged on one side of the inner side surface and is used for projecting incident light corresponding to the projected image to the diffraction film; the diffraction film is used for reflecting part of the incident light rays so that the incident light rays reflected by the diffraction film are projected to a target area, a virtual image corresponding to the projected image is formed in a user field of view by the incident light rays reflected by the diffraction film, and the diffraction film is used for diffracting the incident light rays passing through the diffraction film and entering the front windshield.
In a second aspect, embodiments of the present application provide an automobile, including: the display system as mentioned in the first aspect.
In a third aspect, an embodiment of the present application provides a control method of an automobile, where the automobile is the automobile mentioned in the second aspect, and the control method includes: detecting the ambient brightness outside the automobile; and adjusting the brightness of incident light projected to the diffraction film by the projection unit according to the ambient brightness, wherein the ambient brightness is in direct proportion to the brightness of the incident light.
In a fourth aspect, embodiments of the present application provide an electronic device including a processor, a communication interface, a memory, and a communication bus; the processor, the communication interface and the memory complete communication with each other through a bus; the memory is used for storing a computer program; the processor is configured to execute a program stored in the memory, and implement the steps described in the third aspect.
The display system provided by the embodiment of the application above comprises: the front windshield, the diffraction film and the projection unit, the diffraction film is located the inboard surface of front windshield, the projection unit locates one side of inboard surface, be used for to the diffraction film projection corresponding to the incident light of projection image, the diffraction film is used for carrying out reflection to the partial light in the incident light, so that the incident light after diffraction film is projected to target area, the incident light after diffraction film reflection forms the virtual image that corresponds to the projection image in the user's field of view, and the diffraction film is used for diffraction and getting into front windshield with the incident light that passes through the diffraction film, so, diffraction film will pass the diffraction of incident light of diffraction film and get into front windshield, consequently, carry out the beam split to the light that gets into front windshield, make the reflection back of two reflecting surfaces of front windshield of light again after the beam split, the image ghost can not appear, HUD's imaging quality has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person having ordinary skill in the art.
Fig. 1 is a schematic diagram of a first structure of a display system according to an embodiment of the present application;
fig. 2 is a schematic diagram of a second structure of a display system according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a liquid crystal coating film according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a third structure of a display system according to an embodiment of the present application;
fig. 5 is a flow chart of a control method of an automobile according to an embodiment of the present application.
Detailed Description
The embodiment of the application aims to provide a display system, an automobile and a control method of the automobile, so that the imaging quality of the HUD is improved.
In order to better understand the technical solutions of the present invention, the following description will clearly and completely describe the technical solutions of the embodiments of the present application with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, shall fall within the scope of the invention.
As shown in fig. 1, an embodiment of the present application provides a display system 10, including: a front windshield 101, a diffraction film 102, and a projection unit 103, the diffraction film 102 being provided on an inner side surface of the front windshield 101, the projection unit 103 being provided on a side of the inner side surface for projecting incident light corresponding to the projected image to the diffraction film 102; the diffraction film 102 is used for reflecting part of the incident light so that the incident light reflected by the diffraction film 102 is projected to a target area, the incident light reflected by the diffraction film 102 forms a virtual image corresponding to the projected image in the user field of view, and the diffraction film 102 is used for diffracting the incident light passing through the diffraction film 102 and entering the front windshield 101.
Specifically, the front windshield 101 is a windshield directly in front of the automobile.
The diffraction film 102 is used for diffracting, reflecting, refracting, etc. light entering the diffraction film 102, and the diffraction film 102 includes, but is not limited to, a metal film of a conventional diffraction grating, a liquid crystal coating film, etc., and the metal film of the conventional diffraction grating is a reflection grating formed by etching a series of equidistant and parallel grooves with a cross-sectional structure like a saw-tooth shape on a highly reflective metal film or a concave surface, so that the diffraction grating has the characteristics of light splitting and light focusing. The liquid crystal coating film is a liquid crystal film in which liquid crystal molecules are orderly arranged according to the alignment, and then a liquid crystal coating is solidified to form a layer of solid state, specifically, the liquid crystal coating film has an optical structure similar to a diffraction grating by changing the alignment angle of the liquid crystal molecules and Pitch between the liquid crystal molecules, and the whole liquid crystal alignment direction shows the effect of refractive index gradient distribution.
In one possible implementation, the diffraction film 102 includes a liquid crystal coating type film for reflecting a part of the incident light so that the incident light reflected by the liquid crystal coating type film is projected to a target area, the incident light reflected by the liquid crystal coating type film forms a virtual image corresponding to the projected image in a user's field of view, and the liquid crystal coating type film is for diffracting the incident light passing through the liquid crystal coating type film and entering the front windshield.
Specifically, the liquid crystal coating film is only required to be manufactured to be a planar coating layer coated on the inner side of the front windshield, and the gradient refractive index distribution of different areas of the liquid crystal coating film is different according to the arrangement mode of liquid crystal molecules, that is, each area of the liquid crystal coating film corresponds to one diffraction unit, that is, the liquid crystal coating film has a plurality of diffraction units, the refractive index of at least part of the diffraction units in the plurality of diffraction units is different, as shown in fig. 3, the arrangement mode of the liquid crystal molecules is different for each diffraction unit 301, so that the refractive index of different diffraction units is different. The planar liquid crystal film can not only eliminate the problem of image double image, but also avoid the high cost of using a wedge-shaped windshield and avoid the problem of image distortion.
Further, according to different arrangement modes of liquid crystal molecules, gradient refractive index distribution required by the lens can be formed, that is, any position of the edge of the liquid crystal coating film points to the direction of the center of the liquid crystal coating film, the refractive indexes of the plurality of diffraction units are increased gradually, the refractive index gradient film is distributed by utilizing the change of the refractive index of the film, when a beam of light liquid crystal coating film has different travelling speeds due to different refractive indexes sensed in different areas of the film, and finally, the converging or dispersing effect is achieved. The liquid crystal alignment layer induces the liquid crystal directors to form a non-uniform effective refractive index distribution, namely, the liquid crystal coating film presents graded refractive index gradient distribution of the optical lens, so that the refractive indexes of light rays are different in different areas of the liquid crystal coating film, the graded refractive indexes gradually decrease from the center to the edge, the speed of light rays in the liquid crystal coating film is slower because the refractive index of light rays in the center of the liquid crystal coating film is the largest, and the refractive indexes of light rays on two sides of the edge of the liquid crystal coating film are smaller, so that the convergence or dispersion effect is achieved.
The projection unit 103 is for projecting light with a projection image, which may be navigation information, road surface information, personal information of a user, and the like, to the diffraction film 102. As shown in fig. 1, the projection unit 103 may be disposed at a position of a center console inside the front windshield, and the light emitting direction of the projection unit 103 is aligned with the diffraction film 102. In order to avoid the influence on the driving of the user caused by occupying the area of the center console of the automobile, as shown in fig. 2, the projection unit 103 may be disposed on the roof of the automobile, and the light emitting direction of the projection unit 103 is aligned to the diffraction film 102, so that the space occupation rate of the area of the center console can be effectively reduced.
The display system provided by the embodiment of the application comprises: the front windshield, the diffraction film and the projection unit, the diffraction film is located the inboard surface of front windshield, the projection unit locates one side of inboard surface, be used for to the diffraction film projection corresponding to the incident light of projection image, the diffraction film is used for carrying out reflection to the partial light in the incident light, so that the incident light after diffraction film is projected to target area, the incident light after diffraction film reflection forms the virtual image that corresponds to the projection image in the user's field of view, and the diffraction film is used for diffraction and getting into front windshield with the incident light that passes through the diffraction film, so, diffraction film will pass the diffraction of incident light of diffraction film and get into front windshield, consequently, carry out the beam split to the light that gets into front windshield, make the reflection back of two reflecting surfaces of front windshield of light again after the beam split, the image ghost can not appear, HUD's imaging quality has been improved.
In one possible implementation, as shown in fig. 4, the display system 10 further includes: an antireflection film 104; the antireflection film 104 is disposed between the diffraction film 102 and the front windshield 101, and is used for increasing the light transmission amount of the front windshield.
Specifically, the antireflection film 104 may be a compensation lens, which is an optical lens film having an opposite Power, which is a surface optical coating layer, and which is formed by increasing the light transmission amount of the front windshield, and the compensation lens may be matched to the rear side of the diffraction film 102. In one aspect, the anti-reflection film 104 may reduce reflected light from the front windshield, which is reflected light from a portion of the front windshield that is diffracted by the diffractive film into the incident light corresponding to the projected image, thereby reducing or eliminating stray light and thereby eliminating image ghosts. On the other hand, the antireflection film 104 may further enhance the external light passing through the diffractive film 102 from the outer surface of the front windshield 101, so as to ensure that the image of the external environment corresponding to the external light is not distorted, and reduce or eliminate stray light by reducing the reflected light of the external light passing through the diffractive film 102 from the outer surface of the front windshield 101, so as to increase the light transmission of the external light in the diffractive film 102, thereby avoiding the problem of image distortion.
The anti-reflection film and the diffraction film are of an integrated structure, so that the structures of the anti-reflection film and the diffraction film are firmer, and the imaging quality is further improved.
Corresponding to the display system mentioned in the above embodiment, the embodiment of the present application also provides an automobile, including the display system mentioned in the above embodiment. The automobile provided in the embodiment of the present application can implement each process in the embodiment corresponding to the display system, and in order to avoid repetition, the description is omitted here.
It should be noted that, the automobile provided in the embodiment of the present application and the display system provided in the embodiment of the present application are based on the same inventive concept and have the same technical effects, so the implementation of the embodiment may refer to the implementation of the foregoing display system, and the repetition is not repeated.
In one possible implementation manner, the automobile further comprises a control device and a detection device, wherein the detection device is used for detecting the ambient brightness outside the automobile, the control device is respectively connected with the detection device and the projection unit and is used for adjusting the brightness of the incident light projected to the diffraction film by the projection unit according to the ambient brightness, and the ambient brightness is in direct proportion to the brightness of the incident light.
Specifically, the detecting device may be an ambient light sensor and the like, which may be disposed outside the automobile and used for detecting the ambient brightness outside the automobile, the control device may be a controller, which receives the ambient brightness from the outside of the automobile collected by the ambient light sensor, and adjusts the brightness of the projection unit to a proper range according to the ambient brightness, so that the ambient brightness of the outside of the automobile is consistent with the brightness of the projection unit, for example, when the ambient brightness of the outside of the automobile is too bright, the brightness of the projection unit is adjusted to be higher, and when the ambient brightness of the outside of the automobile is darker, the brightness of the projection unit is adjusted to be lower, thereby ensuring the definition of imaging.
In one possible implementation, the automobile further includes: the lighting device is used for detecting the brightness in the automobile, the control device is connected with the lighting device and used for adjusting the brightness of the light emitting device according to the brightness in the automobile under the condition that the lighting device is in a lighting state, and the brightness of the light emitting device is in direct proportion to the brightness in the automobile.
Specifically, the lighting device can be an LED lamp, an illuminating lamp and the like, and when the brightness in the vehicle is darker, the brightness of the light emitting device can be adjusted to be low, so that the brightness difference between the light emitting device and the vehicle is not overlarge, and the imaging definition is ensured.
Referring to fig. 5, an embodiment of the present application provides a control method of an automobile, where the automobile is the automobile mentioned in the foregoing embodiment, and the control method includes:
in step S501, the ambient brightness outside the automobile is detected.
Specifically, the ambient brightness outside the vehicle may be detected by a detection device, which may be an ambient light sensor or the like, which may be provided outside the vehicle to detect the ambient brightness outside the vehicle.
Step S503, adjusting the brightness of the incident light projected to the diffraction film by the projection unit according to the ambient brightness.
Wherein the ambient brightness is proportional to the incident light.
Specifically, after the ambient brightness from the outside of the automobile collected by the ambient light sensor is received, the brightness of the projection unit is adjusted to a proper range according to the ambient brightness, so that the ambient brightness of the outside of the automobile is consistent with the brightness of the projection unit, for example, when the ambient brightness of the outside of the automobile is too bright, the brightness of the projection unit is adjusted to be higher, and when the ambient brightness of the outside of the automobile is darker, the brightness of the projection unit is adjusted to be lower, so that the imaging definition is ensured.
According to the technical scheme disclosed by the embodiment of the application, the brightness of the projection unit is adjusted to a proper range according to the ambient brightness, so that the ambient brightness outside the automobile is consistent with the brightness of the projection unit, for example, when the ambient brightness outside the automobile is too bright, the brightness of the projection unit is adjusted to be higher, and when the ambient brightness outside the automobile is darker, the brightness of the projection unit is adjusted to be lower, so that the definition of imaging is ensured.
It will be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, the electronic device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash memory (flashRAM). Memory is an example of computer-readable media.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transshipment) such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
It will be apparent to those skilled in the art that embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. A display system, comprising: front windshield, diffraction film and projection unit;
the diffraction film is arranged on the inner side surface of the front windshield;
the projection unit is arranged on one side of the inner side surface and is used for projecting incident light corresponding to the projected image to the diffraction film;
the diffraction film is used for reflecting part of the incident light rays so that the incident light rays reflected by the diffraction film are projected to a target area, a virtual image corresponding to the projected image is formed in a user field of view by the incident light rays reflected by the diffraction film, and the diffraction film is used for diffracting the incident light rays passing through the diffraction film and entering the front windshield.
2. The display system of claim 1, wherein the display system further comprises: an antireflection film;
the antireflection film is arranged between the diffraction film and the front windshield and is used for increasing the light transmission quantity of the front windshield.
3. The display system of claim 2, wherein the antireflection film and the diffraction film are of unitary construction.
4. The display system according to claim 1, wherein the diffraction film includes a liquid crystal coating type film for reflecting a part of the incident light so that the incident light reflected by the liquid crystal coating type film is projected to a target area, the incident light reflected by the liquid crystal coating type film forms a virtual image corresponding to the projected image in a user's field of view, and the liquid crystal coating type film is for diffracting the incident light passing through the liquid crystal coating type film and entering the front windshield.
5. The display system according to claim 4, wherein the liquid crystal coated film has a plurality of diffraction cells, and at least some of the plurality of diffraction cells have different refractive indices.
6. The display system according to claim 5, wherein refractive indices of the plurality of diffraction cells are increased in a direction in which an arbitrary position of an edge of the liquid crystal coating-type film is directed toward a center of the liquid crystal coating-type film.
7. An automobile comprising a display system as claimed in any one of claims 1-6.
8. The automobile of claim 7, further comprising: control means and detection means;
the detection device is used for detecting the ambient brightness outside the automobile;
the control device is respectively connected with the detection device and the projection unit and is used for adjusting the brightness of incident light projected to the diffraction film by the projection unit according to the ambient brightness, and the ambient brightness is in direct proportion to the brightness of the incident light.
9. The automobile of claim 8, further comprising: a lighting device;
the detection device is used for detecting the brightness in the automobile;
the control device is connected with the lighting device and is used for adjusting the light-emitting brightness of the lighting device according to the brightness in the vehicle under the condition that the lighting device is in a lighting state, and the light-emitting brightness is in direct proportion to the brightness in the vehicle.
10. A control method of an automobile, characterized in that the automobile is an automobile according to any one of claims 7 to 9, the control method comprising:
detecting the ambient brightness outside the automobile;
and adjusting the brightness of incident light projected to the diffraction film by the projection unit according to the ambient brightness, wherein the ambient brightness is in direct proportion to the brightness of the incident light.
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| CN202211654527.7A CN116107091A (en) | 2022-12-22 | 2022-12-22 | Display system, automobile and control method |
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| CN117031762A (en) * | 2023-09-28 | 2023-11-10 | 杭州光粒科技有限公司 | Head-up display |
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