CN114252994A

CN114252994A - Head-up display device and vehicle

Info

Publication number: CN114252994A
Application number: CN202011007544.2A
Authority: CN
Inventors: 吴慧军; 方涛; 徐俊峰
Original assignee: Futurus Technology Co Ltd
Current assignee: Futurus Technology Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2022-03-29

Abstract

The embodiment of the invention relates to the technical field of display, and discloses a head-up display device and a vehicle. The head-up display device of the invention comprises: the device comprises a shell provided with a light outlet, a reflecting mechanism arranged in the shell and a three-dimensional image source; the stereoscopic image source is used for emitting image light rays capable of forming stereoscopic vision images, and the image light rays emitted by the stereoscopic image source are emitted into the reflecting mechanism; the reflecting mechanism emits image light rays to the external imaging device from the light outlet so that the external imaging device can form a stereoscopic vision image; the stereoscopic image sources comprise at least two stereoscopic images, and the imaging positions of stereoscopic images formed by image rays emitted by the at least two stereoscopic image sources are different. By adopting the embodiment, the fusion degree of the display image and the actual environment can be improved, the conflict of visual convergence adjustment of a user is avoided, and the use experience of the head-up display device is improved.

Description

Head-up display device and vehicle

Technical Field

The embodiment of the invention relates to the technical field of display, in particular to a head-up display device and a vehicle.

Background

The optical design through the reflection-type is shown to the new line (head up display, "HUD") device, the light that sends the image source is finally projected on outside image device (formation of image board, windshield etc.), form the virtual image by this outside image device, make the driver not have and directly to watch this virtual image, thereby make the driver need not the data that the demonstration of low head can look over the panel board, avoid the driver to look over the danger of the appearance that the panel board leads to in driving process low head, can improve the factor of safety of driving, simultaneously also can bring better driving experience.

The inventors found that at least the following problems exist in the related art: an image formed by the existing head-up display device is difficult to be fused with an object in an actual environment, so that a user is influenced to check the actual environment, and the driving potential safety hazard is caused; and the driver needs to switch the visual angle back and forth between the displayed image and the scene in the actual environment, and visual convergence adjustment conflict occurs, so that visual fatigue phenomena such as blurring and dizziness occur to the driver, and the use experience of the head-up display device is seriously reduced.

Disclosure of Invention

The embodiment of the invention aims to provide a head-up display device and a vehicle, which can improve the fusion degree of a display image and an actual environment, avoid the conflict of convergence adjustment of vision of a user and improve the use experience of the head-up display device.

To solve the above technical problem, an embodiment of the present invention provides a head up display device, including: the device comprises a shell provided with a light outlet, a reflecting mechanism arranged in the shell and a three-dimensional image source; the stereoscopic image source is used for emitting image light rays capable of forming stereoscopic vision images, and the image light rays emitted by the stereoscopic image source are emitted into the reflecting mechanism; the reflecting mechanism emits image light rays to the external imaging device from the light outlet so that the external imaging device can form a stereoscopic vision image; the stereoscopic image sources comprise at least two stereoscopic images, and the imaging positions of stereoscopic images formed by image rays emitted by the at least two stereoscopic image sources are different.

Embodiments of the present invention also provide a vehicle including: the head-up display device and the external imaging device are provided.

Compared with the prior art, the embodiment of the invention is provided with the three-dimensional image sources, the three-dimensional image sources can emit image light rays for forming the three-dimensional image, and the three-dimensional image and the object of the actual environment are three-dimensional images, so that the three-dimensional image and the actual environment are easier to fuse, the experience of a user for observing the three-dimensional image is improved, meanwhile, the three-dimensional image sources comprise at least two three-dimensional image sources, the imaging positions of the three-dimensional image formed by the image light rays respectively emitted by the two three-dimensional image sources are different, and the user can select the three-dimensional image corresponding to the proper distance as required for watching, so that the problem of visual convergence adjustment conflict when the user uses the head-up display device is solved, the experience of the user using the head-up display device is further improved, and the popularization degree of the head-up display device is improved.

In addition, the stereoscopic image source includes: an image source and a stereoscopic image generation mechanism; the stereoscopic image generation mechanism is used for converting light rays emitted by the image source into image light rays which can form a stereoscopic image. The stereoscopic image generation mechanism can convert light rays emitted from the image source into image light rays that can form a stereoscopic image, so that the stereoscopic image can be observed without a user wearing a special device.

Further, the stereoscopic image generation mechanism includes: the blocking unit is positioned on a light emergent path of the image source; the blocking unit is used for partially blocking light rays emitted by the image source, so that the partially blocked light rays form first light rays irradiating the first designated area and second light rays irradiating the second designated area, wherein the first designated area is different from the second designated area, and the first light rays are different from the second light rays. The blocking unit can guide the first light to irradiate the first designated area and guide the second light to irradiate the second designated area, and the setting is convenient and simple.

Further, the stereoscopic image generation mechanism includes: a lenticular lens layer; the columnar lens layer is located on a light emitting path of the image source and used for refracting light emitted by the image source to form first light irradiated to the first designated area and second light irradiated to the second designated area, wherein the first designated area is different from the second designated area, and the first light is different from the second light. The first light irradiated to the first designated area and the second light irradiated to the second designated area are formed in a refraction mode, so that the flexibility of forming the first light and the second light is improved.

Further, the stereoscopic image generation mechanism includes: the pointing element is positioned on the light-emitting optical path of the image source; the image source sequentially emits a first light ray and a second light ray according to a time sequence, the first light ray is emitted to the first designated area by the pointing element, the second light ray is emitted to the second designated area by the pointing element, the first designated area is different from the second designated area, and the first light ray is different from the second light ray. Another way of forming the first light rays and the second light rays is provided.

In addition, the reflection mechanism includes: a curved mirror and a planar mirror; the plane reflector reflects the image light rays respectively emitted by the at least two stereoscopic image sources to the curved reflector; the curved surface reflector emits image light rays respectively emitted by the at least two stereoscopic image sources out of the light outlet and irradiates the surface of the external imaging device, so that the external imaging device can form at least two stereoscopic images. The reflecting mechanism comprises a plurality of reflecting mirrors, so that the transmission length of image light rays forming the stereoscopic image source can be increased, and the distance between the stereoscopic image element and a user can be increased.

In addition, the number of the curved surface reflectors is the same as that of the three-dimensional image sources, and each curved surface reflector is used for reflecting the image light rays emitted by the corresponding three-dimensional image source; and/or; the number of the plane reflectors is the same as that of the three-dimensional image sources, and each plane reflector is used for reflecting the image light rays emitted by the corresponding three-dimensional image source to the curved surface reflector. And various combination modes of the curved surface reflector and the plane reflector are provided, and the configuration is flexible.

In addition, the reflection mechanism further includes: a transflective mirror; the transflective mirror is arranged between the plane reflector and at least one stereoscopic image source and is used for transmitting image light rays emitted by at least one stereoscopic image source and reflecting image light rays emitted by other stereoscopic image sources; the light path of the image light transmitted by the reflecting mirror is superposed with the light path of the image light reflected by the reflecting mirror, and the superposed image light is emitted to the plane reflecting mirror; the plane reflector reflects the superposed image light to the curved reflector, and the superposed image light is reflected to the curved reflector and is emitted to the external imaging device from the light outlet of the shell. Through the reflecting mirror, the transmission length of the image light of the stereoscopic image source can be increased, the distance between the stereoscopic image and a user is further increased, and the visual convergence conflict is avoided.

In addition, the image source includes: the backlight module comprises a light source, a backlight assembly arranged adjacent to the light source and a conversion element arranged adjacent to the backlight assembly; the backlight assembly includes: the light source comprises a reflection light guide element, a direction control element and a dispersion element which are sequentially arranged along the light emitting direction of the light source; the reflection light guide element controls the source light generated by the light source to propagate in the reflection light guide element, and the source light enters the direction control element from the light-emitting surface of the reflection light guide element; the direction control element converges the incident source light; the diffusion element diffuses the source light converged by the direction control element according to a preset angle; the conversion element converts the source light rays diffused by the diffusion element into the image light rays. By the backlight assembly and the conversion element, the utilization rate of source light emitted by the light source can be improved, and the power consumption of the head-up display device is reduced.

In addition, the reflective light guide element includes: the hollow shell comprises a first end part and a second end part which are oppositely arranged, the area of the first end part is smaller than that of the second end part, and the shell is in a pyramid shape or a paraboloid shape; the first end part is used for placing a light source, and the light-emitting surface of the second end part is used as the light-emitting surface of the reflection light guide element; the inner surface of the shell is provided with a reflecting surface, and the source light emitted by the light source is reflected when being incident to the reflecting surface, so that the source light reflected by the reflecting surface is emitted to the direction control element. The inner surface of the reflection light guide element is provided with a reflection surface, and large-angle source light rays emitted by the light source are gathered after being reflected by the reflection surface, so that the utilization rate of the source light rays is improved.

In addition, the reflective light guide element includes: a solid transparent portion and a collimating portion, the solid transparent portion having a refractive index greater than 1; an accommodating cavity and a groove are arranged in the end part of the solid transparent part along the light emitting direction of the light source, the accommodating cavity is used for accommodating the light source and is positioned at one end far away from the light emitting surface of the solid transparent part, the groove is positioned on the light emitting surface of the solid transparent part, and a collimation part is arranged in the groove; or the solid transparent end part is provided with an accommodating cavity along the light emitting direction of the light source, and the accommodating cavity is internally provided with a collimation part which is positioned at one end far away from the light source. The solid transparent part can refract source light rays emitted by the light source, and the collimation part calibrates the light rays, so that the utilization rate of the source light rays is improved.

In addition, the light-emitting port department of casing is provided with the dust mask, and new line display device still includes: the shading part is arranged at the light outlet of the shell and used for blocking outside light rays irradiating the dustproof film along a preset direction, and the preset direction is the irradiation direction of the outside light rays. The light-shading part is arranged at the light outlet, so that the phenomena of glare and influence on the effect of watching stereoscopic vision images of a user due to the irradiation of external light rays can be prevented.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural diagram of a head-up display device according to a first embodiment of the invention;

FIG. 2 is a schematic diagram of a head-up display device according to a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a stereoscopic image generation mechanism according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a stereoscopic image generation mechanism according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a stereoscopic image generation mechanism according to a second embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a structure of a head-up display device according to a third embodiment of the present invention;

FIG. 7 is a schematic diagram of another head-up display device according to a third embodiment of the invention;

FIG. 8 is a schematic diagram of another head-up display device according to a third embodiment of the invention;

FIG. 9 is a schematic diagram of another head-up display device according to a third embodiment of the invention;

FIG. 10 is a schematic diagram of an image source according to a fourth embodiment of the present invention;

fig. 11 is a schematic structural view of a backlight assembly according to a fourth embodiment of the present invention;

FIGS. 12 and 13 are schematic views showing the structure of a reflective light guide element according to a fourth embodiment of the present invention;

FIGS. 14 and 15 are schematic views showing the structure of another reflective light guide element according to a fourth embodiment of the present invention;

FIG. 16 is a schematic diagram of a heads-up display device according to a fifth embodiment of the invention;

fig. 17 is a schematic structural view of a vehicle according to a sixth embodiment of the invention;

fig. 18 is a schematic structural view of a vehicle according to a sixth embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.

Current head-up display devices are typically mounted on a vehicle, such as an automobile. The image formed by the existing head-up display device is a two-dimensional plane image, and the scene observed by the driver is a three-dimensional stereo image, so that the image formed by the head-up display device cannot be attached to the actual environment for display, and the real-time road condition observed by the driver is influenced. In addition, the existing head-up display device forms images at a fixed distance, when a driver uses the head-up display device to observe displayed images, the driver needs to switch the sight lines between the displayed images and different scenes, so that the visual convergence adjustment conflict occurs, and the use experience of the head-up display device is seriously reduced.

A first embodiment of the present invention relates to a head-up display device. The structure of the head-up display device 1 can be as shown in fig. 1, and includes: a casing 10 with a light outlet 101, a reflection mechanism 20 arranged in the casing 10, and at least two stereo image sources 30.

The stereoscopic image source 30 is used for emitting image light rays capable of forming stereoscopic vision images, and the image light rays emitted by the stereoscopic image source 30 are emitted into the reflecting mechanism 20; the reflection mechanism 20 emits the image light from the light exit 101 to the external imaging device 2 for the external imaging device 2 to form the stereoscopic image 3. The stereoscopic image sources 30 include at least two stereoscopic image sources, and the imaging positions of the stereoscopic images 3 formed by the image rays emitted by the at least two stereoscopic image sources 30 are different.

Specifically, the head-up display device 1 may be mounted on various vehicles, such as automobiles, trains, airplanes, mail ships, and the like. In the present example, the head-up display device 1 is mounted in an automobile, and the external imaging device 2 may transmit and reflect light, for example, a windshield of the automobile. The housing 10 may be made of a light-shielding material to prevent external light from entering the head-up display device 1 and interfering with the stereoscopic image source 30. As shown in fig. 1, the head-up display device 1 may be disposed below the external display device 2. In fig. 1, an eye box region indicates a region where a user sees a displayed stereoscopic image. The eye box refers to an area where the user can see the eyes of the image formed by the external imaging device 2. The eye box area has a certain size, and both eyes of the user deviate from the center of the eye box by a certain distance, such as up and down, left and right, and as long as the user is still in the eye box area, the stereoscopic vision image formed by the external imaging device 2 can be seen. After the image light that each stereoscopic image source 30 produced jets out casing 10, reflects on external imaging device 2, shoots out image light to the eye box region, and the user can see the virtual image that forms in the external imaging device 2 outside, does not influence the observation to external environment simultaneously. Wherein the reflecting mechanism 20 may include a curved mirror 201, and the curved mirror 201 may enlarge the image and provide a longer imaging distance.

The operation of the head-up display device is described below with reference to fig. 1:

the stereoscopic image source 30 emits image light rays capable of forming a stereoscopic image, the image light rays are reflected by the reflection mechanism 20 and then emitted from the light outlet 101, the image light rays are reflected by the external imaging device 2 to form the stereoscopic image, a user can observe a virtual image formed outside the external imaging device 2, and the stereoscopic image and a stereoscopic scene have a good laminating effect; meanwhile, a multi-layer stereoscopic image is formed by providing at least two stereoscopic image sources 30. It should be noted that, in this example, only two layers of stereoscopic images (such as the stereoscopic image a and the stereoscopic image B in fig. 1) are formed, in this example, the number of multi-layer stereoscopic images is not limited to two layers, but may be a stereoscopic image larger than two layers, and specifically, a corresponding number of stereoscopic images may be formed according to the set number of stereoscopic image sources 30, for example: three layers, four layers and the like, and the imaging distances of different stereoscopic vision images are different, and the different stereoscopic vision images can be coaxial or not. Since the stereoscopic vision images at different distances from the user can be generated, the sight line of the user does not need to be switched back and forth between the stereoscopic vision image at a fixed distance and the real scenes at different distances, and the use experience of the head-up display device 1 is greatly improved.

Compared with the prior art, the stereo image source 30 is provided, the stereo image source 30 can emit image light rays for forming stereo vision images, because the stereoscopic vision image and the object of the actual environment are three-dimensional images, the stereoscopic vision image and the actual environment are easier to fuse, the experience of the user for observing the stereoscopic vision image is improved, meanwhile, the three-dimensional image sources 30 include at least two, the imaging positions of the three-dimensional images formed by the image rays respectively emitted by the two three-dimensional image sources 30 are different, thereby enabling the user to select the stereoscopic vision image corresponding to the proper distance to watch according to the requirement, therefore, the problem of visual convergence adjustment conflict when the user uses the head-up display device 1 is solved, the experience of the user using the head-up display device 1 is further improved, and the popularization degree of the head-up display device 1 is improved.

A second embodiment of the present invention relates to a head-up display device. The second embodiment is a detailed description of the stereoscopic image source 30 in the first embodiment. The block diagram of the stereoscopic image source 30 is shown in fig. 2, and includes: an image source 301 and a stereoscopic image generation mechanism 302. The stereoscopic image generation mechanism 302 is configured to convert light rays emitted from the image source 301 into image light rays that can form a stereoscopic image.

Specifically, the image source 301 may be a common image source, such as an LCD image source, an LED image source, or the like. The stereoscopic image generation mechanism 302 may be disposed at a side along which the light rays emitted from the image source 301 are emitted, and the stereoscopic image generation mechanism 302 is configured to convert the light rays emitted from the image source 301 into image light rays that can form a stereoscopic image. The stereoscopic image generation mechanism 302 may form a first light ray irradiated to the first designated area and a second light ray irradiated to the second designated area by blocking or directionally emitting pixels at different positions. The first designated area may be a left eye area or a right eye area of the eye box area, and the second designated area may be a left eye area or a right eye area of the eye box area, where the first designated area and the second designated area are not the same area; the stereoscopic image can be observed by the user with the two eyes positioned in the eye box area.

In this embodiment, 3 kinds of structures of the stereoscopic image generation mechanism 302 are listed, and the structures of the 3 kinds of stereoscopic image generation mechanisms 302 will be described below, respectively.

The structure I is as follows: the stereoscopic image generation mechanism 302 includes a blocking unit located on the light outgoing path of the image source 301. The blocking unit is used for partially blocking the light emitted by the image source 301, so that the partially blocked light forms a first light irradiated to the first designated area and a second light irradiated to the second designated area, wherein the first designated area is different from the second designated area, the first light is different from the second light, and image contents respectively formed by the first light and the second light are also different. For example, the blocking units may include a plurality of first blocking units 3021 located on the outgoing light path of the image source 301 and a plurality of second blocking units 3022 located on the outgoing light path of the image source 301, and the stereoscopic image generation mechanism 302 has a structure as shown in fig. 3.

In one example, the first blocking unit 3021 is disposed apart from the second blocking unit 3022; each first blocking unit 3021 blocks part of the light of the image source 301, so that the first light formed without being blocked by each first blocking unit 3021 is emitted to the first designated area through the light outlet 101; each second blocking unit 3022 blocks a portion of light emitted from the image source 301, so that second light formed without being blocked by each second blocking unit 3022 is emitted to a second designated area through the light outlet 101.

Specifically, a plurality of first blocking units 3021 and a plurality of second blocking units 3022 are spaced apart from each other, so that a light barrier may be formed, and the first blocking units 3021 and the second blocking units 3022 are spaced apart from each other by a first preset distance (e.g., d1 in fig. 3). The first blocking unit 3021 and the second blocking unit 3022 are disposed side by side with a second preset distance (e.g., d2 in fig. 3) from the image source 301. The first blocking unit 3021 and the second blocking unit 3022 may be disposed on the outer side of the image source 301, the outer side of the image source 301 being the side on the light emitting optical path of the image source 301, as shown in side a in fig. 3.

As shown in fig. 3, the example in which the image source 301 includes 8 columns of image source units, 2 first blocking units, and 2 second blocking units is described. A space d2 exists between the light barrier and the image source 301, and both the first blocking unit 3021 and the second blocking unit 3022 can block light, so that part of the second light emitted by the image source units (such as R1, R2, R3, and R4 shown in fig. 3) cannot reach the left eye region, where only the first light emitted by the image source units L1, L2, L3, and L4 can be viewed; similarly, only the second light rays emitted from the image source units R1, R2, R3, R4 can be viewed in the right eye region. The first blocking unit 3021 allows the first light to be emitted to a first designated area (a left eye area as shown in fig. 3), such as the first light emitted from the source units L1, L2, L3, and L4; and the second blocking unit allows the second light to be emitted to a second designated area (e.g., a right eye area as shown in fig. 3), such as the second light emitted by the source units R1, R2, R3, and R4, and further realizes stereoscopic imaging by separating the visible pictures of the left eye and the right eye. Here, the sizes of the first and

second blocking units

3021 and 3022 and the position between the first and

second blocking units

3021 and 3022 are specially designed through precise calculation, so that it is possible to ensure imaging at a specific position.

In one example, the first blocking unit 3021 and the second blocking unit 3022 may be the same; for example, the first and

second barrier units

3021 and 3022 are each a switching liquid crystal layer including a polarizing film and a liquid crystal layer, a series of vertical stripes oriented at 90 ° are manufactured using the liquid crystal layer and the polarizing film, the stripes are in a pixel level in width, light passing through them forms a vertical fine stripe grid mode, and switching between 2D and 3D display modes can be achieved by controlling the switching state of the liquid crystal layer.

In another example, the first blocking unit 3021 and the second blocking unit 3022 may be a grating including a plurality of vertically arranged opaque stripes, and the stripes block light to realize a stereoscopic image.

It is worth mentioning that the stereoscopic image can be viewed without the user wearing a special eye by blocking the light by the first blocking unit 3021 and the second blocking unit 3022, and the device requirement for viewing the stereoscopic image can be reduced.

The structure II is as follows: the stereoscopic image generation mechanism 302 includes: the image processing device comprises a cylindrical lens layer, wherein the cylindrical lens layer is located on a light emitting path of the image source 301, and is used for refracting light emitted by the image source 301 to form first light irradiated to a first designated area and second light irradiated to a second designated area, the first designated area is different from the second designated area, the first light is different from the second light, and image contents formed by the first light and the second light respectively are also different. The first designated area may be a left eye area or a right eye area of the eye box area, and the second designated area may be a left eye area or a right eye area of the eye box area, wherein the first designated area and the second designated area are not the same area; the stereoscopic image can be observed by the user with the two eyes positioned in the eye box area.

The lenticular lens layer may include a plurality of cylindrical light-transmitting elements 3023 arranged side by side; the schematic structural diagram of the stereoscopic image generation mechanism 302 is shown in fig. 4:

in one example, each cylindrical light transmissive element 3023 covers at least two different columns of image source units in the image source 301; each cylindrical light-transmitting element 3023 refracts light emitted from image source 301.

Specifically, the lenticular lens layer includes a plurality of pillar-shaped light-transmitting elements 3023 arranged side by side, the pillar-shaped light-transmitting elements 3023 are arranged outside the image source 301, and each pillar-shaped light-transmitting element 3023 covers at least two different columns of image source units of the image source 301. Cylindrical light-transmitting element 3023 may be a cylindrical light-transmitting mirror. In fig. 4, the image source 301 includes 8 rows of image source units, and the lenticular lens layer includes 4 lenticular lens elements, which are used to emit the first light rays emitted by the image source units in one row to the left eye area and emit the second light rays emitted by the image source units in the other row to the right eye area.

As shown in fig. 4, each of the columnar light-transmitting elements 3023 covers two columns of image source units, and as shown in fig. 4, one columnar light-transmitting element 3023 covers L1 and R1, based on the refractive characteristics of the columnar light-transmitting element 3023, the second light emitted by a column of second image source units can be emitted to the right eye after passing through the columnar light-transmitting element 3023 through the curved surface of the columnar light-transmitting element 3023, for example, the second light emitted by the second image source unit R1 is emitted to the right eye region; meanwhile, the first light emitted from another column of the first image source units is emitted to the left eye after passing through the cylindrical light-transmitting element 3023, for example, the light emitted from the first image source unit L1 is emitted to the left eye area. By precisely setting the shape of the cylindrical light-transmitting element 3023, the light emitted from the image source 301 can be refracted to form a first light irradiated to the first designated area and a second light irradiated to the second designated area. That is, as shown in fig. 4, the second light rays emitted from the second image source units R1, R2, R3, R4, etc. may converge to the right eye region, and the first light rays emitted from the first image source units L1, L2, L3, L4, etc. may converge to the left eye region, so that a stereoscopic image may be viewed when both eyes of the user are positioned in the eye box region.

In another example, the cylindrical light-transmitting element 3023 may include any combination of a plano-convex cylindrical lens, a biconvex cylindrical lens, a meniscus cylindrical lens, a cylinder cross cylindrical lens, a shaped cylinder-like lens, for example, the cylindrical light-transmitting element 3023 may be a combination of a plano-convex cylindrical lens, a biconvex cylindrical lens, a meniscus cylindrical lens, a cylinder cross cylindrical lens, a shaped cylinder-like lens; or any one of a plano-convex cylindrical lens, a biconvex cylindrical lens, a meniscus cylindrical lens, a cylindrical cross cylindrical lens and a special-shaped cylindrical lens.

The structure is three: the stereoscopic image generation mechanism 302 includes: a pointing element 3024 located in the path of the light exiting the image source 301. The image source 301 sequentially emits a first light and a second light according to a time sequence, and the pointing element 3024 emits the first light to a first designated area and emits the second light to a second designated area, where the first designated area is different from the second designated area, the first light is different from the second light, and image contents respectively formed by the first light and the second light are also different.

In one example, as shown in fig. 5, pointing element 3024 includes: a prism section 3024-1 and a lens section 3024-2, wherein the end of the prism section 3024-1 having a large surface area is connected to the lens section 3024-2; the image source 301 sequentially emits a first light and a second light according to a time sequence, the pointing element 3024 emits the first light to a first designated area, and emits the second light to a second designated area, where the first light and the second light are different, and image contents formed by the first light and the second light are also different, the first designated area may be a left eye area or a right eye area of the eye box area, and the second designated area may be a left eye area or a right eye area of the eye box area, where the first designated area and the second designated area are not the same area; the stereoscopic image can be observed by the user with the two eyes positioned in the eye box area.

Specifically, the image source 301 includes a light source 3011, and if the specific component 3024 is used, the image source 301 may include 2 sets of light sources, so as to match the image source 301 for fast refresh display and the driving method, so as to make the image light enter the left eye and the right eye of the user in a sequential manner, and further make the human eye feel the three-dimensional effect of the stereoscopic image according to the principle of persistence of vision.

Pointing element 3024 includes an elongated lens structure with a cylindrical or non-cylindrical curved surface, and a prism structure designed to correspond to the elongated lens structure, as shown in fig. 5. A pointing element 3024 may be provided on the outer surface of the image source 301. Alternatively, the pointing element 3024 may be disposed between internal modules of the image source 301, for example, in the light-exiting path of the light source 3011. The light source 3011 in the image source 301 may adopt a side-in type structure or a back-in type structure, and fig. 5 illustrates the back-in type structure as an example.

The light source 3011 may include one or more first light sources corresponding to a left eye and one or more second light sources corresponding to a right eye, and the first and second light sources may be repeatedly switched in an on-off state. When the first light source is turned on, the second light source is turned off, and the first light rays are matched with the driving of the image source 301 to form an image corresponding to a left eye area, such as solid line light rays in fig. 5; at the next moment, when the second light source is turned on, the first light source is turned off, and the second light ray forms an image corresponding to the right eye region in cooperation with the driving of the image source 301, as shown by the dotted line light ray in fig. 5. The frequency of image refreshing display is very fast, and exceeds the limit of human eye discrimination, and the images can continuously and respectively display the image corresponding to the left eye area and the image corresponding to the right eye area, so that a user can watch a visual stereo image at a specific position. Wherein the strip lens is a cylindrical lens or a non-cylindrical lens, such as a parabolic cylinder; the prism structure may be a triple prism structure.

In the present embodiment, various structures of the stereoscopic image generation mechanism 302 are provided; so that the stereoscopic image generation mechanism 302 can be flexibly set.

A third embodiment of the present invention relates to a head-up display device, and is a detailed description of the reflection mechanism 20 in the first embodiment. As shown in fig. 6, the reflection mechanism 20 includes: a curved mirror 201 and a plane mirror 202; the plane mirror 202 reflects the image light rays respectively emitted by the at least two stereoscopic image sources 30 to the curved mirror 201; the curved reflector 201 emits the image light rays emitted from the at least two stereoscopic image sources 30 respectively from the light outlet 101 to the surface of the external imaging device 2, so that the external imaging device 2 can form at least two stereoscopic images.

Specifically, the number of the stereo image sources 30 is at least two, in this example, 2 stereo image sources are taken as an example for illustration, and in conjunction with fig. 6, the stereo image sources are the first stereo image source 30-1 and the second stereo image source 30-2, respectively. Namely, the head-up display device 1 comprises a first stereo image source 30-1, a second stereo image source 30-2, a plane reflector 202, a curved reflector 201 and a shell 10; image light A emitted by the first stereoscopic image source 30-1 is reflected by the plane reflector 202 and the curved reflector 201 in sequence, then is emitted to the external imaging device 2 outside the housing 10 through the light outlet 101, and is reflected by the external imaging device 2 to form a stereoscopic image A; similarly, the image light B emitted by the second stereoscopic image source 30-2 is reflected by the plane mirror 202 and the curved mirror 201 in sequence, then emitted to the external imaging device 2 through the light outlet 101, and reflected by the external imaging device 2 to form the stereoscopic image B.

In one example, the number of flat mirrors 202 is the same as the number of stereo sources 30, and each flat mirror 202 is used for emitting image light generated by the corresponding stereo source 30 to the curved mirror 201.

Specifically, if the number of the stereo image sources 30 is 2, the number is the first stereo image source 30-1 and the second stereo image source 30-2; the number of the plane mirror 202 is two, wherein the first stereo image source 30-1 corresponds to the first plane mirror 202-1, the second stereo image source 30-2 corresponds to the second plane mirror 202-2, and the curved mirror 201 may be only one, or may be the same as the number of the stereo image sources 30. The head-up display device can be as shown in fig. 7, the reflection mechanism 20 includes a first plane mirror 202-1, a second plane mirror 202-2 and a curved mirror 201; image light A emitted by the first stereoscopic image source 30-1 is reflected by the first plane reflector 202-1 and the curved reflector 201 in sequence, then is emitted to the external imaging device 2 outside the shell 10 through the light outlet 101, and is reflected by the external imaging device 2 to form a stereoscopic image A; the image light emitted by the second stereoscopic image source 30-2 is reflected by the second plane reflector 202-2 and the curved reflector 201 in sequence, then emitted to the external imaging device 2 through the light outlet 101, and reflected by the external imaging device 2 to form a stereoscopic image B.

In another example, the number of the curved mirrors 201 may be the same as the number of the stereo image sources 30, and each curved mirror 201 is used for reflecting the image light emitted from the corresponding stereo image source 30. The head-up display device 1 has a structure shown in fig. 8.

Specifically, the head-up display device 1 includes a first stereoscopic image source 30-1, a second stereoscopic image source 30-2, a reflection mechanism 20, and a housing 10 with a light outlet 101, in which the above elements are installed, and the reflection mechanism 20 includes a first curved mirror 201-1, a second curved mirror 201-2, a first plane mirror 202-1, and a second plane mirror 202-2. Image light A emitted by the first stereoscopic image source 30-1 is reflected by the first plane reflector 202-1 and the first curved reflector 202-1 in sequence, and then is emitted to the external imaging device 2 outside the shell 10 through the light outlet 101 and is reflected into a stereoscopic image A; the image light emitted by the second stereoscopic image source 30-2 is reflected by the second plane reflector 202-2 and the second curved reflector 201-2 in sequence, and then emitted to the external imaging device 2 through the light outlet 101 and reflected to form a stereoscopic image B.

It should be noted that the optical path length of the image light emitted from each stereoscopic image source 30 is different, for example, in this example, the optical path length of the image light B emitted from the second stereoscopic image source 30-2 is greater than the optical path length of the image light a emitted from the first stereoscopic image source 30-1, and the stereoscopic image a and the stereoscopic image B may be vertically lower than the vertical stereoscopic image B or vertically higher than the vertical stereoscopic image B. The stereoscopic vision image A and the stereoscopic vision image B display different images at different distances, the imaging distance of the stereoscopic vision image A can be 2-4 meters, and the stereoscopic vision image A is a close-range picture and can display key driving data such as vehicle instruments and the like; the imaging distance of the stereoscopic vision image B can be 20-50 meters, and the stereoscopic vision image B is a long-range view picture and can display a stereoscopic vision image which is fused and matched with long-range views such as road surfaces, buildings, front vehicles and the like, for example, turning labels of driving prompts during driving and the like.

In one example, the distance between each stereoscopic image and the focal plane of the external imaging device 2 is within a preset range.

Specifically, the preset range may be set according to practical applications, for example, the preset range may be 0 to 5 centimeters. In this example, as shown in fig. 7, the position of the stereoscopic image B formed by the second stereoscopic image source 30-2 relative to the curved reflector 201 is located at the focal plane of the external imaging device 2 or close to the focal plane of the external imaging device 2, and according to the curved imaging law, the stereoscopic image B is formed at a longer distance or an infinite distance, and is suitable for matching and adhering with a distant real scene, so as to improve the experience of the user using the head-up display device.

It is worth mentioning that the distance between each stereoscopic image and the focal plane of the external imaging device 2 is within a preset range; the stereoscopic vision image is well integrated with the actual environment, and the stereoscopic vision image is suitable for the head-up display device 1 for enhancing reality, so that the experience of using the head-up display device 1 is improved.

In one example, the stereoscopic images formed by the respective image rays generated by each stereoscopic image source 30 may be coaxial. In this example, two stereoscopic image sources 30 are taken as an example, and the reflection mechanism 20 further includes: a transflective mirror 203; the transflective mirror 203 is disposed between the plane mirror 202 and at least one of the stereoscopic image sources 30, and is configured to transmit the image light emitted from at least one of the stereoscopic image sources 30 and reflect the image light emitted from other stereoscopic image sources 30; the light path of the image light transmitted by the transflective mirror 203 coincides with the light path of the image light reflected by the transflective mirror 203, and the coincident image light is emitted to the plane mirror 202; the planar reflector 202 reflects the overlapped image light to the curved reflector 201, and the overlapped image light is reflected by the curved reflector 201 and emitted from the light outlet 101 of the housing to the external imaging device 2, and the structure of the head-up display device 1 is shown in fig. 9.

In fig. 9, the stereoscopic image source 30 includes a first stereoscopic image source 30-1 and a second stereoscopic image source 30-2, an image ray a emitted by the first stereoscopic image source 30-1 is transmitted through the transflective mirror 203, an image ray B emitted by the second stereoscopic image source 30-2 is reflected through the transflective mirror 203, the image ray a and the image ray B are overlapped, the overlapped image ray a and the image ray B are reflected together by the plane mirror 202 and the curved mirror 201, and then are emitted to the external imaging device 2 outside the housing 10 through the light outlet 101, and are reflected by the external imaging device 2 to form a stereoscopic image a and a stereoscopic image B, and the stereoscopic image a and the stereoscopic image B are coaxial.

It is understood that the transflective mirror 203 can be a common transflective element, such as a transflective element that reflects 50% or 60% of light; and transmits 50% or 40% of the light. The transflective lens 203 may also be a polarization transflective element, which transmits light with a first polarization characteristic and reflects light with a second polarization characteristic, for example, the image light a emitted from the first stereoscopic image source includes light with the first polarization characteristic, and the image light B emitted from the second stereoscopic image source includes light with the second polarization characteristic; the first polarization characteristic light can be a horizontal polarization characteristic light, and the second polarization characteristic light is perpendicular to the first polarization characteristic light and can be a vertical polarization characteristic light; alternatively, the first polarization characteristic light may be a vertical polarization characteristic light, and the second polarization characteristic light may be a horizontal polarization characteristic light.

It should be noted that if the number of the stereoscopic image sources 30 is greater than 2, if there are three stereoscopic image sources 30, one of the stereoscopic image sources 30 may be disposed below the transflective mirror 203, the image light generated by the stereoscopic image source 30 is transmitted to the plane mirror 202 through the transflective mirror 203, the other two stereoscopic image sources are disposed at one side of the transflective mirror 203 and reflected to the plane mirror 202 through the transflective mirror 203, and through this arrangement, two coaxial images and one image with different axes can be generated.

A fourth embodiment of the present invention relates to a head-up display device, and this embodiment is a detailed description of the image source 301 in the second embodiment, in which the image source 301 includes a light source 3011, a backlight module 3012 disposed adjacent to the light source 3011, and a conversion element 3013 disposed adjacent to the backlight module 3012, and the structure of the image source is as shown in fig. 10.

Each component is described separately below.

Specifically, the Light source 3011 includes at least one electroluminescent element, and generates Light by electric Field excitation, such as a Light Emitting Diode (LED), an Organic Light Emitting Diode (OLED), a Mini LED (Mini LED), a Micro LED (Micro LED), a Cold Cathode Fluorescent Lamp (CCFL), a Cold Light source (Cold LED Light, CLL), an Electroluminescence (EL), an electron Emission (FED), or a Quantum Dot Light source (QD). For example, the light source 3011 may be a white LED comprising RGB mixed light.

In one example, the conversion component 3013 includes a liquid crystal panel that can convert source light emitted by the light source 3011 into image light.

The structure of the backlight assembly 3012 is shown in fig. 11, and includes: a reflective light guide element 3012-1, a direction control element 3012-2, and a dispersion element 3012-3, which are arranged in this order along the light emitting direction of the light source 3011; the reflective light guide component 3012-1 controls a source light generated by the light source 3011 to propagate in the reflective light guide component 3012-1, and the source light is emitted from a light emitting surface of the reflective light guide component 3012-1 to the direction control component 3012-2; the direction control component 3012-2 converges the incident source light; the dispersion element 3012-3 disperses the source light converged by the direction control element 3012-2 at a preset angle.

Specifically, a reflective light guide element 3012-1, a direction control element 3012-2, and a dispersion element 3012-3 are sequentially disposed between the light source 3011 and the conversion element 3013. The reflective light guide component 3012-1 is disposed in the light emitting direction of the light source 3011, and source light emitted by the light source 3011 propagates in the reflective light guide component 3012-1 and is emitted to the direction control component 3012-2.

As shown in fig. 12, the reflective light guide element 3012-1 includes: a hollow housing comprising a first end a1 and a second end a2 arranged oppositely, the first end a1 having an area smaller than the second end a2, wherein the housing has a pyramidal or parabolic shape; the first end a1 is used for placing the light source 3011, and the opening surface formed by the second end a2 is used as the light-emitting surface of the reflective light guide component 3012-1; the inner surface of the housing is provided with a reflective surface to concentrate source light generated by the light source 3011.

Specifically, the housing of the reflective light guide element 3012-1 may be in a triangular pyramid shape, a quadrangular pyramid shape, or a parabolic shape, wherein the cross section of the quadrangular pyramid shape may be a rectangle, a square, a trapezoid, or a parallelogram; as shown in fig. 12 and 13, the housing is exemplified by a housing in the shape of a rectangular pyramid, a first end a1 and a second end a2 of which are oppositely arranged, and the area of the first end a1 is smaller than that of the second end a2, wherein a dotted circle in fig. 12 represents a virtual image of the light source 3011.

The housing of the reflective light directing element 3012-1 may also be parabolic in shape, as shown in fig. 14 and 15. The reflective light guide element 3012-1 includes: a solid transparent part C1 and a collimation part C2, the refractive index of the solid transparent part C1 is more than 1; an accommodating cavity C3 and a groove C4 are sequentially arranged in the end part of the solid transparent part C1 along the light emitting direction of the light source 3011, the accommodating cavity C3 is used for accommodating the light source 3011, and the opening of the groove C4 is positioned on the light emitting surface of the solid transparent part C1. The collimating part C2 is disposed within the accommodating chamber C3 and away from the end where the light source 3011 is disposed, as shown in fig. 14. Alternatively, the collimating part C2 is disposed within the groove C4, as shown in fig. 15.

Specifically, the reflective light guide element 3012-1 includes a solid transparent portion C1, the solid transparent portion C1 includes an end portion where the light source 3011 is disposed, the refractive index of the solid transparent portion C1 is greater than 1, a part of light emitted by the light source 3011 is totally reflected on an internal reflection surface of the solid transparent portion C1 and emitted, and another part of light emitted by the light source 3011 is transmitted and emitted in the solid transparent portion C1. An accommodating cavity C3 is arranged at the end of the solid transparent part C1 where the light source 3011 is arranged, and a collimating part C2 capable of aligning the source light to be parallel is arranged on one surface of the accommodating cavity C3 close to the light exit surface, as shown in fig. 14; alternatively, as shown in fig. 15, the end of the solid transparent part C1 where the light source 3011 is disposed is provided with a containing cavity C3, the light exit surface of the solid transparent part C1 is provided with a groove C4 extending towards the end, and the bottom surface of the groove C4 near the end is provided with a collimation part C2 capable of adjusting the source light to be parallel.

Directional control elements 3012-3 may be: a convex lens, a fresnel lens, or any combination thereof. For example, a convex lens, a fresnel lens, a lens combination, or the like, and the direction control element 3012-3 in fig. 11 will be described by taking a convex lens as an example. It will be appreciated that the predetermined range may be a point, such as the focal point of a convex lens, or a smaller area.

In the image source 301 provided in this embodiment, the backlight module 3012 can improve the utilization rate of the source light emitted by the light source 3011, and reduce the power consumption of the head-up display device 1.

A fifth embodiment of the present invention relates to a head-up display device, which is a further improvement of the first to fourth embodiments, and is mainly characterized in that: the light shielding portion 50 is added to the head-up display device 1 as shown in fig. 16.

In one example, the head-up display device 1 may further include: and a light shielding portion 50 disposed at the light outlet 101 of the housing 10, wherein the light shielding portion 50 is used for shielding the external light irradiated onto the light outlet 101 along a predetermined direction, and the predetermined direction is the irradiation direction of the external light.

Specifically, the head-up display device 1 may be provided with a transparent dustproof film 60 at the light outlet 101, where the transparent dustproof film 60 is mainly used to prevent dust and impurities from entering the housing 10, and the transparent dustproof film 60 is a transparent film; when sunlight irradiates on the transparent dustproof film 60, strong glare occurs on the surface of the transparent dustproof film 60, the light shielding portion 50 is disposed at the light outlet 101, and the light exit surface of the light shielding portion 50 is disposed as an inclined surface for preventing glare from entering human eyes, as shown in fig. 16.

The dust can be prevented from entering the head-up display device 1 by providing the dust-proof film 60, and glare can be effectively prevented from entering human eyes by providing the light-shielding portion 50.

A sixth embodiment of the present invention relates to a vehicle S1 having a structure as shown in fig. 17, including: an external imaging device 2 and the head-up display device 1 according to any one of the first to fifth embodiments.

In one example, the vehicle further includes: and a phase delay element 40, wherein the phase delay element 40 is positioned in the shell 10 and close to the light outlet 101, or positioned between the light outlet 101 and the external imaging device 2. The position of the phase delay element 40 is shown in fig. 18, and fig. 18 shows only the housing 10 and the phase delay element 40, and the phase delay element 40 is provided at the position of the light exit 101.

Specifically, in practical applications, the external imaging device 2 is a windshield, and the reflectivity of the windshield to S-polarized light is usually high, and the image light emitted from the stereoscopic image source 30 of the head-up display device 1 is generally S-polarized light, for example, the image source 301 in the stereoscopic image source 30 may be an LCD emitting S-polarized light. If the user wears sunglasses to filter the S-polarized light, the user cannot see a stereoscopic image if the user wears sunglasses.

In one example, phase retarding element 40 may be an 1/4 wave plate that converts S-polarized light to circularly polarized light, producing a P-polarized light component. The type of image light emitted from the light exit 101 can be converted by the phase delay element 40, and thus the user can see a stereoscopic image even when wearing sunglasses.

In another example, the image source 301 may be adjusted to emit P-polarized light, and it is understood that a P-polarized reflective film may be disposed on the windshield in a matching manner due to the low reflectivity of the windshield to the P-polarized light.

It is worth mentioning that the phase delay element 40 is arranged to enable the user to normally view the stereoscopic vision image even wearing sunglasses, thereby improving the use experience of the driver.

The external imaging device 2 may transmit and reflect light, and may be, for example, a windshield of an automobile. In order to solve the ghost image problem, a wedge-shaped film is arranged in the external imaging device 2, or; the surface of the external imaging device 2 close to the user is provided with a selective reflection film for reflecting image light, or; the external imaging device 2 is provided with a wave plate or a P-polarized light reflecting film so that the emitted image light is P-polarized light.

Specifically, a wedge-shaped film may be added in the interlayer of the windshield, which may eliminate double images. The selective reflection film can be additionally arranged on the inner surface of the windshield and only reflects image light, for example, the selective reflection film comprises a white light LED (light emitting diode) with RGB (red, green and blue) mixed light, the emitted image light comprises light with RGB three wave bands, the selective reflection film only reflects the RGB light and penetrates other light, the image light cannot be secondarily reflected on the inner surface of the outer side of the windshield, and therefore double images are eliminated.

In another example, an 1/4 wave plate or a 1/2 wave plate may be additionally disposed on the inner surface of the windshield, and in cooperation with the image source 301 capable of emitting S-polarized light, after the S-polarized image light is transmitted through the windshield, the transmitted light is converted into P-polarized light or circularly polarized light through the wave plate, and the reflectivity of the inner surface of the outer side of the external imaging device 2 is low, so that double images are eliminated.

In another example, a P-polarized light reflecting film is additionally arranged on the inner surface of the windshield, and is matched with the image source 301 capable of emitting P-polarized light, after the P-polarized image light is reflected by the P-polarized light reflecting film, the glass has higher transmittance for the P-polarized light, so that the transmitted P-polarized light can also transmit out of the external imaging device 2, and the reflectivity of the inner surface of the outer side of the external imaging device 2 is very low, so that double images are eliminated.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. A head-up display device, comprising: the device comprises a shell provided with a light outlet, a reflecting mechanism arranged in the shell and a three-dimensional image source;

the stereoscopic image source is used for emitting image light rays capable of forming stereoscopic vision images, and the image light rays emitted by the stereoscopic image source are emitted into the reflecting mechanism;

the reflecting mechanism emits the image light rays from the light outlet to an external imaging device so that the external imaging device can form a stereoscopic vision image;

the stereoscopic image sources comprise at least two stereoscopic images, and the imaging positions of stereoscopic images formed by image rays emitted by the at least two stereoscopic image sources are different.

2. The heads-up display device of claim 1 wherein the stereoscopic image source comprises: an image source and a stereoscopic image generation mechanism;

the stereoscopic image generation mechanism is used for converting the light rays emitted by the image source into image light rays which can form a stereoscopic image.

3. The heads-up display device according to claim 2, wherein the stereoscopic image generation mechanism includes: the blocking unit is positioned on a light emergent light path of the image source;

the blocking unit is used for partially blocking light rays emitted by the image source so that the partially blocked light rays form first light rays irradiating a first designated area and second light rays irradiating a second designated area, wherein the first designated area is different from the second designated area, and the first light rays are different from the second light rays.

4. The heads-up display device according to claim 2, wherein the stereoscopic image generation mechanism includes: a lenticular lens layer;

the cylindrical lens layer is located on a light emitting path of the image source and used for refracting light emitted by the image source to form first light irradiated to a first designated area and second light irradiated to a second designated area, wherein the first designated area is different from the second designated area, and the first light is different from the second light.

5. The heads-up display device according to claim 2, wherein the stereoscopic image generation mechanism includes: the pointing element is positioned on the light-emitting optical path of the image source;

the image source sequentially emits a first light ray and a second light ray according to a time sequence, the first light ray is emitted to the first designated area by the pointing element, the second light ray is emitted to the second designated area by the pointing element, the first designated area is different from the second designated area, and the first light ray is different from the second light ray.

6. The heads-up display device according to any one of claims 1 to 5, wherein the reflection mechanism includes: a curved mirror and a planar mirror;

the plane reflector reflects the image light rays respectively emitted by the at least two stereoscopic image sources to the curved reflector;

the curved surface reflector emits the image light rays respectively emitted by the at least two stereoscopic image sources out of the light outlet and on the surface of the external imaging device so that the external imaging device can form at least two stereoscopic images.

7. The head-up display device according to claim 6, wherein the number of the curved mirrors is the same as the number of the stereoscopic image sources, and each curved mirror is used for reflecting the image light emitted by the corresponding stereoscopic image source;

and/or;

the number of the plane reflectors is the same as that of the three-dimensional image sources, and each plane reflector is used for reflecting the image light rays emitted by the corresponding three-dimensional image source to the curved reflector.

8. The heads-up display device of claim 7 wherein the reflective mechanism further comprises: a transflective mirror;

the transflective mirror is arranged between the plane reflector and at least one of the three-dimensional image sources, and is used for transmitting the image light rays emitted by at least one of the three-dimensional image sources and reflecting the image light rays emitted by other three-dimensional image sources;

the light path of the image light transmitted by the reflecting mirror is superposed with the light path of the image light reflected by the reflecting mirror, and the superposed image light is emitted to the plane reflecting mirror;

the plane reflector reflects the superposed image light to the curved reflector, and the superposed image light is reflected to the curved reflector and then is emitted to the external imaging device from the light outlet of the shell.

9. The heads-up display device of claim 3 wherein the image source comprises: a light source, a backlight assembly disposed adjacent to the light source, and a conversion element disposed adjacent to the backlight assembly;

the backlight assembly includes: the reflecting light guide element, the direction control element and the dispersion element are sequentially arranged along the light emitting direction of the light source;

the reflection light guide element controls the source light generated by the light source to spread in the reflection light guide element, and the source light enters the direction control element from the light-emitting surface of the reflection light guide element;

the direction control element converges the incident source light;

the diffusion element diffuses the source light rays converged by the direction control element according to a preset angle;

the conversion element converts the source light rays diffused by the diffusion element into the image light rays.

10. The heads-up display device of claim 9 wherein the reflective light guide element comprises: a hollow housing comprising a first end and a second end disposed opposite to each other, the first end having an area smaller than that of the second end, wherein the housing has a pyramidal or parabolic shape;

the first end part is used for placing the light source, and the light-emitting surface of the second end part is used as the light-emitting surface of the reflection light guide element;

the inner surface of the shell is provided with a reflecting surface, and the source light emitted by the light source is reflected when being incident to the reflecting surface, so that the source light reflected by the reflecting surface is emitted to the direction control element.

11. The heads-up display device of claim 10 wherein the reflective light guide element comprises: a solid transparent portion and a collimating portion, the solid transparent portion having a refractive index greater than 1;

an accommodating cavity and a groove are arranged in the end part of the solid transparent part along the light emitting direction of the light source, the accommodating cavity is used for accommodating the light source and is positioned at one end far away from the light emitting surface of the solid transparent part, the groove is positioned on the light emitting surface of the solid transparent part, and the collimation part is arranged in the groove; or,

the solid transparent end part is provided with along the light-emitting direction of the light source the accommodating cavity is provided with the collimation part in the accommodating cavity, and the collimation part is positioned at one end far away from the light source.

12. The head-up display device according to claim 1, wherein a dust-proof film is provided at the light exit of the housing, the head-up display device further comprising: the dustproof film comprises a shell, a light outlet, a shading part and a light blocking part, wherein the shading part is arranged at the light outlet of the shell and used for blocking external light rays irradiated on the dustproof film along a preset direction, and the preset direction is the irradiation direction of the external light rays.

13. A vehicle, characterized by comprising: the heads-up display device and the external imaging device according to any one of claims 1 to 12.

14. The vehicle of claim 13, further comprising: a phase delay element located between the light exit and the external imaging device;

wherein the phase delay element is configured to convert the image light of S-polarized light emitted through the light exit into the image light of circularly polarized light type or the image light of P-polarized light.

15. The vehicle of claim 14, wherein the external imaging device is a windshield of the vehicle having a wedge membrane disposed therein.