Image generation assembly, head-up display device and carrier

Abstract

The utility model provides an image generation assembly, a head-up display device and a carrier. The image generation assembly comprises a backlight module, an image panel and a first light splitting part which are arranged in a stacked mode. The image panel is arranged on the light emitting side of the backlight module, and the first light splitting part is arranged on the side, away from the backlight module, of the image panel; a first image area and a second image area are distributed on the image panel, the first image area is an image area needing first display processing, the first light splitting part correspondingly covers the first image area, parallax is formed during imaging through light splitting of the first light splitting part to obtain a 3D effect, and the second image area can not be processed. The problem that the resolution of the second image area is reduced due to light splitting of the light splitting part is avoided, the definition and brightness performance of the second image area is ensured, and the image quality can be effectively improved on the whole.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to an image generation component, a head-up display device, and a vehicle. Background Art

[0002] Naked-eye three-dimensional (3D) display refers to a 3D display technology that allows users to view three-dimensional images directly with the naked eye, without the need for specialized 3D glasses. Naked-eye 3D display technology uses a beam splitter, such as a grating, attached to the image panel to split the light, creating a stereoscopic image for the left and right eyes. This allows the user to see the corresponding content in each eye. However, this beam splitting process can affect image quality. Summary of the Invention

[0003] In order to solve the problem in the prior art that the light splitting element may affect the imaging quality, the present invention provides an image generation component, a head-up display device and a vehicle.

[0004] In a first aspect, an embodiment of the present disclosure provides an image generating assembly, the image generating assembly comprising: a backlight module, an image panel, and a first light splitting element that are stacked;

[0005] The image panel is arranged on the light-emitting side of the backlight module, and the first light splitter is arranged on the side of the image panel away from the backlight module;

[0006] A first image area and a second image area are distributed on the image panel. The first image area is an image area that needs to be subjected to a first display process. The first beam splitter correspondingly covers the first image area.

[0007] In an optional embodiment, the second image area is an image area that needs to be subjected to a second display process;

[0008] The image generating component further includes a second light splitting element, and the second light splitting element correspondingly covers the second image area.

[0009] In an optional embodiment, the optical parameters of the second light-splitting element are different from the optical parameters of the first light-splitting element;

[0010] And / or, the optical parameters of the first beam splitter are set according to the relevant parameters of the first display process; the optical parameters of the second beam splitter are set according to the relevant parameters of the second display process.

[0011] In an optional embodiment, the image panel includes: a color liquid crystal screen or a black and white liquid crystal screen.

[0012] In an optional embodiment, the light splitting element includes: a cylindrical grating or a slit grating.

[0013] In a second aspect, an embodiment of the present disclosure provides a head-up display device, comprising: an image generating component and a reflector component as described in any one of the first aspects;

[0014] The image generation component is used to emit image light;

[0015] The reflector assembly is located in the optical path of the image light and reflects the image light to the imaging assembly, where a virtual image is formed by reflection from the imaging assembly.

[0016] In an optional embodiment, the reflector assembly includes a first reflector and a second reflector;

[0017] The first reflector is located on the optical path between the image generating assembly and the second reflector, and is used to reflect the image light to the second reflector;

[0018] The second reflector is used to reflect the image light to the imaging component.

[0019] In an optional embodiment, the first reflector includes: a plane mirror or a free-surface curved mirror.

[0020] In an optional embodiment, the second reflector includes: a free-surface curved mirror.

[0021] In a third aspect, an exemplary embodiment of the present disclosure provides a vehicle, comprising: a head-up display device and an imaging component as described in any one of the second aspects.

[0022] The image generation component, head-up display device, and vehicle provided by the embodiments of the present disclosure have the following technical effects:

[0023] Imaging is performed through the provided image generating component, and the first image area that needs to undergo the first display processing is covered with the first spectrometer. The first spectrometer splits the light to form parallax during imaging to obtain a 3D effect. The second image area does not need to be processed, thereby avoiding problems such as reduced resolution of the second image area due to the spectrometer splitting. The clarity and brightness of the second image area are guaranteed, and the image quality can be effectively improved overall.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present disclosure or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 is a schematic diagram of a field of view provided by an exemplary embodiment of the present disclosure;

[0027] Figure 2 is a schematic diagram of a virtual image distance provided by an exemplary embodiment of the present disclosure;

[0028] Figure 3 is a schematic diagram of a HUD projection range provided by an exemplary embodiment of the present disclosure;

[0029] Figure 4 is a schematic diagram of naked-eye 3D provided by an exemplary embodiment of the present disclosure;

[0030] Figure 5 is a structural diagram of an image generation component provided by an exemplary embodiment of the present disclosure;

[0031] Figure 6 is a first structural schematic diagram of an image panel provided by an exemplary embodiment of the present disclosure;

[0032] Figure 7 is a schematic diagram of an image to be displayed provided by an exemplary embodiment of the present disclosure;

[0033] Figure 8 is a second structural schematic diagram of an image panel provided by an exemplary embodiment of the present disclosure;

[0034] Figure 9 is a first structural schematic diagram of a head-up display device provided by an exemplary embodiment of the present disclosure;

[0035] Figure 10 is a second structural schematic diagram of a head-up display device provided by an exemplary embodiment of the present disclosure;

[0036] Figure 11 It is a structural schematic diagram of a carrier provided by an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] Before disclosing the embodiments of the present invention, the following technical terms are explained:

[0040] Field of view (FOV), see Figure 1 The angle formed by the two edges of the maximum range of the object image 10 of the target that can pass through the lens 11, with the lens of the optical instrument as the vertex, is called the field of view angle, which includes the horizontal field of view angle 12 and the vertical field of view angle 13.

[0041] Horizontal field of view (HFOV) is the angle between the eye point and the midpoint of the left and right vertical edges of a rectangular virtual image.

[0042] Vertical field of view (VFOV) 13: For a rectangular virtual image, the vertical field of view is the angle between the midpoints of the upper and lower horizontal sides and the line connecting the eye point.

[0043] Virtual image distance (VID) 20, see Figure 2 , refers to the distance from the user's eye position 21 to the projected virtual image 22. In the figure, 23 is a horizontal plane, and 24 is an imaging component, such as a windshield.

[0044] A head-up display (HUD) is a driver-assistance device used in automobiles. It is a comprehensive electronic display device composed of electronic components, display components, and controllers. It projects information such as vehicle speed, navigation information, and warnings in the form of images and characters in front of the driver through optical components.

[0045] HUD projection range, see Figure 3, refers to the HUD coverage area visible to the user's eye position 21 and the virtual image distance 20 of the virtual image 23 from the human eye, which can be specifically calculated through the horizontal field of view angle 12, the vertical field of view angle 13 and the downward viewing angle.

[0046] Glasses-free 3D, see Figure 4 Through optical design, the user's left eye 41 sees image P1, and the right eye 42 sees image P2 on the imaging assembly. The binocular parallax between images P1 and P2 creates a sense of depth and space for the objects the user sees. The images seen by the left eye 41 and the right eye 42 are combined in the user's brain to form a three-dimensional image with a sense of depth. By changing the positional relationship between the two images to adjust the binocular parallax, the user's subjective perception of the virtual image distance changes (in reality, the virtual image distance remains unchanged). The closer the two images are, the closer the user perceives the virtual image distance to be; conversely, the farther the two images are, the farther the user perceives the virtual image distance to be.

[0047] To achieve glasses-free 3D, optical designs such as attaching a beam splitter to the image panel that generates the image light can be used to change the positional relationship between image 1 and image 2 to adjust for binocular parallax. However, the placement of the beam splitter can affect the resolution of the resulting virtual image.

[0048] Based on this, an exemplary embodiment of the present disclosure provides an image generation component 5, see Figure 5 The image generating assembly 5 includes a stacked backlight module 51, an image panel 52, and a first beam splitter 53. The image panel 52 is disposed on the light-emitting side 511 of the backlight module 51, and the first beam splitter 53 is disposed on a side of the image panel 52 away from the backlight module 51.

[0049] The backlight module 51 can provide sufficient and uniform light, which passes through the image panel 52 to generate corresponding image light 54. To facilitate the light generated by the backlight module 51 to pass through the image panel 52 to generate corresponding image light 54, the image panel 52 can be configured as a color LCD screen or a black and white LCD screen. In this embodiment, the selection can be based on actual conditions and is not particularly limited here.

[0050] like Figure 6 As shown, the image panel 52 is provided with a first image region 521 (the portion indicated by horizontal lines in the figure) and a second image region 522 (the portion indicated by blank lines in the figure). The first image region 521 is the image region that requires the first display processing, and the first beam splitter 53 covers the first image region 521 accordingly.

[0051] In this embodiment, the first display processing is preferably 3D processing, but is not limited thereto and can be selected according to actual conditions.

[0052] Taking the first display processing as 3D processing as an example, see Figure 7 For the image to be displayed, usually only part of the image area needs to be processed in 3D, such as the image areas of the turning head 71, the forward collision warning 72, the pedestrian collision warning 73, etc. in the image to be displayed, while other part of the image area may not be processed in 3D, such as the image areas of the complex image 74, the text 75, etc. in the image to be displayed.

[0053] Generally speaking, the image area requiring 3D processing in the image to be displayed corresponds to the first image area 521 on the image panel 52, and the image area requiring no 3D processing corresponds to the second image area 522 on the image panel 52. Therefore, in the image panel 52, the first image area 521 is aligned with the image area requiring 3D processing in the image to be displayed, and the first beam splitter 53 is covered over the first image area 521 to achieve 3D processing of the virtual image formed by the image to be displayed.

[0054] The first beam splitter 53 includes but is not limited to a cylindrical grating or a slit grating, and can be selected according to actual conditions.

[0055] Specifically, the division of the first image area 521 and the second image area 522 can be set based on the field of view defined in the virtual image of the image to be displayed. In this embodiment, the first image area 521 can be 13° x 4°, and the second image area 522 can be 7° x 1°, but this is not limited to this. During the division of the two image areas, to prevent the image light from the first image area 521 and the image light from the second image area 522 from overlapping during reflection and affecting the imaging effect, a longitudinal spatial gap of 0.5°-1.5° is retained at the boundary between the first image area 521 and the second image area 522 on the image panel 52.

[0056] In addition, it should be noted that, regarding the boundary between the first image area 521 and the second image area 522 retained on the image panel 52, although the boundary is often displayed in the form of a straight line when observed on the virtual image formed by the image to be displayed, optical distortion will occur in the imaging process from the image generating component 5 to the corresponding virtual image position. Therefore, according to the principle of inverse correction of image optical distortion, the boundary is actually set as a curve on the image panel 52.

[0057] In this embodiment, imaging is performed by the provided image generating component, and the first image area 521 that needs to undergo the first display processing is covered with the first spectrometer 53, and parallax is formed during imaging through spectrometry to obtain a 3D effect; while the second image area 522 does not need to be processed, thereby avoiding problems such as reduced resolution of the second image area 522 due to spectrometry by the spectrometer, ensuring the clarity and brightness of the second image area 522, and effectively improving the image quality as a whole.

[0058] In one embodiment, the second image area 522 may be an image area that needs to be subjected to the second display processing, or may be an image area that does not need to be subjected to the second display processing, depending on the application scenario of the image generation component 5 .

[0059] Since the second image area 522 is an image area that does not need to be subjected to the second display processing, other processing such as light splitting may not be performed on the second image area 522 on the image panel 52 .

[0060] by Figure 8 For example, if the second image area 522 is an image area that needs to be subjected to the second display processing, the image generating component 5 further includes a second beam splitter, and the second beam splitter correspondingly covers the second image area 522 .

[0061] Among them, the second display processing is the same as the first display processing, preferably 3D processing, and the second spectrometer is the same as the first spectrometer 53, including a cylindrical grating or a slit grating, but not limited to this, and can be selected according to the actual application scenario.

[0062] The images in the first image region 521 and the second image region 522 form different virtual images through the imaging optical path. In some possible application scenarios, the desired 3D effects for the two virtual images are different. Therefore, the processing methods required for the first display process and the second display process are also different. This is generally reflected in the configuration of the first beam splitter 53 and the second beam splitter 55. The optical parameters of the second beam splitter 55 can be set to be different from the optical parameters of the first beam splitter 53 to achieve different 3D imaging effects.

[0063] Specifically, the optical parameters of the first light splitting element 53 can be set according to the relevant parameters of the first display process, and the optical parameters of the second light splitting element 55 can be set according to the relevant parameters of the second display process.

[0064] Among them, optical parameters include but are not limited to magnification, diffraction angle, number of slits, etc., and related parameters include but are not limited to depth of field range, binocular parallax, resolution, etc., which can be selected according to actual conditions.

[0065] In this embodiment, by setting a first spectrometer 53 adapted for the first display processing for the first image area 521 and a second spectrometer adapted for the second display processing for the second image area 522, virtual images with different 3D imaging effects are formed. According to different requirements for the 3D imaging effects of different image areas, the optical parameters of the corresponding spectrometers can be customized, so that the image generation component provided by this embodiment has a larger 3D coverage area and depth range.

[0066] An exemplary embodiment of the present disclosure further provides a head-up display device 9, see Figure 9 , the head-up display device 9 includes: the image generation component 5 and the reflector component 91 in the previous embodiment;

[0067] The image generating component 5 is used to emit image light, and the reflector component 91 is located on the optical path 92 of the image light and reflects the image light to the imaging component 11, which reflects the image light to form a virtual image.

[0068] Specifically, the reflector assembly includes a first reflector 911 and a second reflector 912. The first reflector 911 is located on the optical path between the image generating assembly 5 and the second reflector 912, and is used to reflect the image light to the second reflector 912. The second reflector 912 is used to reflect the image light to the imaging assembly 11.

[0069] Finally, a virtual image 111 corresponding to the image to be displayed is formed on the imaging component 11 , and the user 112 observes the corresponding virtual image 111 at the corresponding position.

[0070] The first reflector includes a plane mirror or a free-form curved mirror, and the second reflector includes a free-form curved mirror, but is not limited thereto. Due to the magnifying effect of a curved mirror, if a curved mirror is used as a reflector, the size of the image light will be magnified, and the final image will also be magnified to a certain extent.

[0071] In one embodiment, when the second image area 522 of the image panel 5 is an image area that requires a second display processing, the image panel 5 includes two image areas that perform different display processing respectively. On the one hand, this is to avoid interference between the light emitted by the two image areas on the optical path, affecting the imaging effect; on the other hand, it is to accurately adjust the image light generated by each image area.

[0072] Based on the above embodiments, see Figure 11 The first reflector 911 specifically includes a first second reflector 9111 and a first second reflector 9112 . The first second reflector 9111 and the first second reflector 9112 are arranged in the same direction and are both arranged between the second reflector 912 and the imaging component 5 .

[0073] The optical path 92 formed by the image light includes a first optical path 921 and a second optical path 922. The first optical path 921 refers to the image light formed by the first image area 521 passing through the first reflector 911 and the second reflector 9121 to the imaging component 11, and finally forming a first virtual image 1111 corresponding to the first image area 521; the second optical path 922 refers to the image light formed by the second image area 522 passing through the first reflector 911 and the second reflector 9122 to the imaging component 11, and finally forming a second virtual image 1112 corresponding to the second image area 522.

[0074] In this way, two relatively independent light paths are formed, which can achieve independent control of the 3D effects of different image areas, avoid light interference during the reflection process, and ensure the imaging effect.

[0075] An exemplary embodiment of the present disclosure provides a carrier, such as Figure 11 As shown, the vehicle 12 includes: the head-up display device 9 and the imaging component 11 in the above embodiment.

[0076] The vehicle 12 may be in the form of a car, a train, an airplane, etc., and the imaging device 11 may be in the form of a display screen, a windshield, etc., without any particular limitation.

[0077] The head-up display device 9 generates image light of the image to be displayed and transmits it to the imaging component 9 to display a virtual image 111 corresponding to the image to be displayed on the imaging component 11. The user 112 can observe the corresponding virtual image 111 at the corresponding position.

[0078] It should be noted that the above-mentioned order of the embodiments of the present disclosure is for descriptive purposes only and does not represent the superiority or inferiority of the embodiments. The above description is of specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0079] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0080] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. An image generation component, characterized in that: The image generation component comprises: a backlight module, an image panel and a first light splitting element which are stacked; The image panel is arranged on the light emitting side of the backlight module, and the first light splitter is arranged on a side of the image panel away from the backlight module; A first image area and a second image area are distributed on the image panel. The first image area is an image area that needs to be subjected to a first display process. The first light splitting element covers the first image area accordingly.

2. The image generation component according to claim 1, characterized in that The second image area is an image area that needs to be subjected to a second display process; The image generating component further includes a second light splitting element, and the second light splitting element corresponds to and covers the second image area.

3. The image generation component according to claim 2, characterized in that The optical parameters of the second beam splitter are different from the optical parameters of the first beam splitter; And / or, the optical parameters of the first light splitter are set according to relevant parameters of the first display process; the optical parameters of the second light splitter are set according to relevant parameters of the second display process.

4. The image generation component according to claim 1, characterized in that The image panel includes: a color liquid crystal screen or a black and white liquid crystal screen.

5. The image generation component according to any one of claims 1 to 4, characterized in that: The light splitting element includes: a cylindrical grating or a slit grating.

6. A head-up display device, characterized in that: The head-up display device comprises: an image generating component and a reflector component as claimed in any one of claims 1 to 5; The image generating component is used to emit image light; The reflector assembly is located on the optical path of the image light, and reflects the image light to the imaging assembly, and forms a virtual image through reflection by the imaging assembly.

7. The head-up display device according to claim 6, characterized in that: The reflector assembly includes a first reflector and a second reflector; The first reflector is located on the optical path between the image generating component and the second reflector, and is used to reflect the image light to the second reflector; The second reflector is used to reflect the image light to the imaging component.

8. The head-up display device according to claim 7, characterized in that: The first reflector includes: a plane mirror or a free-surface curved mirror.

9. The head-up display device according to claim 8, characterized in that: The second reflector includes: a free-surface curved mirror.

10. A carrier, characterized in that: The vehicle comprises: a head-up display device and an imaging assembly as described in any one of claims 7-9.

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