CN114077056A

CN114077056A - Head-up display device and head-up display system

Info

Publication number: CN114077056A
Application number: CN202010852491.8A
Authority: CN
Inventors: 吴慧军; 徐俊峰; 方涛
Original assignee: Futurus Technology Co Ltd
Current assignee: Futurus Technology Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2022-02-22

Abstract

The embodiment of the invention relates to the technical field of display, and discloses a head-up display device and a head-up display system. In the present invention, a head-up display device includes: the device comprises a shell, an image source device, a transflective element and a reflecting element, wherein the image source device, the transflective element and the reflecting element are arranged in the shell; the image source device is used for generating first imaging light rays, second imaging light rays and third imaging light rays; the transflective element is used for receiving and reflecting the first imaging light rays and receiving and transmitting the second imaging light rays; the reflecting element is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays, and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays out of the light outlet so as to be projected on the reflecting device to form a first virtual image, a second virtual image and a third virtual image; at least two of the three have different image distances. The head-up display device and the head-up display system provided by the invention can solve the problem of visual fatigue of a driver and improve the driving safety.

Description

Head-up display device and head-up display system

Technical Field

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

Background

The new line shows (HUD, head up display) technique indicates the optical design through the reflective, the light that sends the image source is finally projected on formation of image window (formation of image board, windshield etc.), thereby the driver is when observing the outside real environment of windshield, need not the low head just can directly see information such as speed of time, navigation, avoid the driver to look at the branch heart that panel board or control screen lead to in driving process low head, and then improve driving safety factor, also can bring better driving experience simultaneously. In the prior art, the position of an image formed by a head-up display device from human eyes is fixed.

The inventor finds that at least the following problems exist in the prior art: in the use process of the head-up display device, because a driver needs to observe real scenes at all positions outside the imaging window, the sight line needs to be switched between an image with a fixed distance formed by the HUD and the real scenes at all positions with different distances outside the imaging window, so that the driver is easy to have visual fatigue phenomena such as blurring, dizziness and the like, and the driving safety is not high enough.

Disclosure of Invention

The embodiment of the invention aims to provide a head-up display device and a head-up display system, which can solve the problem of visual fatigue of a driver and improve driving safety.

To solve the above technical problem, an embodiment of the present invention provides a head-up display device for forming a virtual image by being projected on a reflection device, including: the device comprises a shell with a light outlet, and an image source device, a transflective element and a reflecting element which are arranged in the shell; the image source device is used for generating first imaging light rays, second imaging light rays and third imaging light rays; the transflective element is used for receiving and reflecting the first imaging light rays and receiving and transmitting the second imaging light rays; the reflection element is used for receiving the first imaging light reflected by the transflective element, the second imaging light transmitted by the transflective element and the third imaging light generated by the image source device, and reflecting the first virtual image, the second virtual image and the third virtual image which are formed by projecting the light outlet on the reflection device at different image distances.

An embodiment of the present invention provides a head-up display system including: a reflection device and the head-up display device; the reflecting device is used for receiving the first imaging light, the second imaging light and the third imaging light emitted from the light outlet, and then the first virtual image, the second virtual image and the third virtual image are formed.

Compared with the prior art, in the embodiment of the invention, because the imaging positions of at least two of the first virtual image, the second virtual image and the third virtual image are different from the distance of the reflecting device, that is, there are at least two of the first virtual image, the second virtual image, and the third virtual image that differ in image distance, that is, at least two of the three images display different content at different distances, so that at least three images with different image distances can be respectively matched and fused with the real scenes with different distances, when the head-up display device is used, a driver does not need to switch the sight back and forth between the image with the fixed distance formed by the head-up display device and the live-action with different distances outside the imaging window, the visual convergence adjustment conflict is improved, visual fatigue phenomena such as blurring and dizziness of the driver are caused, and the driving safety is improved.

In addition, the reflective element includes a curved reflective member for collecting and reflecting light; the curved surface reflecting component is used for receiving the first imaging light, the second imaging light and the third imaging light and reflecting the first imaging light, the second imaging light and the third imaging light out of the light outlet.

In addition, the curved reflecting member includes at least one curved reflecting mirror; the curved surface reflector is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays generated by the image source device and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays out of the light outlet.

In addition, the curved surface reflecting component is a curved surface reflector; the curved surface reflector is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays generated by the image source device and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays out of the light outlet.

In addition, the curved surface reflecting part comprises a first curved surface reflecting mirror and a second curved surface reflecting mirror; the first curved surface reflector is used for receiving the first imaging light rays reflected by the transflective element and the second imaging light rays transmitted by the transflective element and reflecting the first imaging light rays and the second imaging light rays out of the light outlet; the second curved surface reflector is used for receiving third imaging light generated by the image source device and reflecting the third imaging light out of the light outlet.

In addition, the reflective element further includes: a plane reflection member for changing a light transmission direction; the plane reflection part is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays generated by the image source device and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays to the curved surface reflection part; the curved surface reflecting component is used for receiving the first imaging light, the second imaging light and the third imaging light reflected by the plane reflecting component and reflecting the first imaging light, the second imaging light and the third imaging light out of the light outlet.

In addition, the curved surface reflecting component is a curved surface reflecting mirror, and the plane reflecting component is a plane reflecting mirror; the plane reflector is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays generated by the image source device and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays to the curved reflector; the curved surface reflector is used for receiving the first imaging light, the second imaging light and the third imaging light reflected by the plane reflector and reflecting the first imaging light, the second imaging light and the third imaging light out of the light outlet.

In addition, the curved surface reflecting component is a curved surface reflecting mirror, and the plane reflecting component comprises a first plane reflecting mirror and a second plane reflecting mirror; the first plane reflector is used for receiving the first imaging light rays reflected by the transflective element and the second imaging light rays transmitted by the transflective element and reflecting the first imaging light rays and the second imaging light rays to the curved reflector; the second plane reflector is used for receiving third imaging light generated by the image source device and reflecting the third imaging light to the curved surface reflector.

In addition, the curved surface reflecting part comprises a first curved surface reflecting mirror and a second curved surface reflecting mirror; the first curved surface reflector is used for receiving the first imaging light rays and the second imaging light rays reflected by the plane reflection part and reflecting the first imaging light rays and the second imaging light rays out of the light outlet; the second curved reflector is used for receiving the third imaging light reflected by the plane reflection component and reflecting the third imaging light out of the light outlet.

In addition, the plane reflection component is a plane reflector; the plane reflector is used for receiving the first imaging light reflected by the transflective element and the second imaging light transmitted by the transflective element, reflecting the first imaging light to the first curved reflector, receiving the third imaging light generated by the image source device and reflecting the third imaging light to the second curved reflector.

In addition, the plane reflection member includes a first plane mirror and a second plane mirror; the first plane reflector is used for receiving the first imaging light rays reflected by the transflective element and the second imaging light rays transmitted by the transflective element, and reflecting the first imaging light rays to the first curved reflector; the second plane reflector is used for receiving the third imaging light and reflecting the third imaging light to the second curved reflector.

In addition, the image source device comprises a first image source, a second image source and a third image source, wherein the first image source is arranged in a first space on one side of the transflective element, and the second image source is arranged in a second space on the opposite side of the transflective element; the first image source, the second image source and the third image source are respectively used for generating the first imaging light, the second imaging light and the third imaging light.

In addition, the main optical axis of the first imaging light ray and the main optical axis of the second imaging light ray are axisymmetric relative to the transflective element, and the distance from the first image source to the transflective element is not equal to the distance from the second image source to the transflective element.

In addition, the image source device comprises a first image source and a second image source; the first image source is used for generating the first imaging light; the second image source comprises a first area for generating the second imaging light rays and a second area for generating the third imaging light rays; the first image source is arranged in a first space on one side of the transflective element, and the second image source is arranged in a second space on the opposite side of the transflective element.

In addition, the main optical axis of the first imaging light ray and the main optical axis of the second imaging light ray are axisymmetric relative to the transflective element, and the distance from the first image source to the transflective element is unequal to the distance from the second region to the transflective element.

In addition, at least one of the first image source and the second image source comprises a light source for generating light, a backlight assembly and an image generating element which are sequentially arranged on the light emitting side of the light source; the backlight assembly comprises a reflection light guide element, a direction control element and a dispersion element which are arranged on the light emitting side of the light source in sequence; the reflecting light guide element is used for collecting the light rays generated by the light source and conducting the collected light rays to the direction control element; the direction control element is used for converging the light rays from the reflection light guide element and transmitting the converged light rays to the dispersion element; the diffusion element is used for diffusing the light rays from the direction control element and transmitting the diffused light rays to the image generation element; the image generation element is used for converting the light diffused by the diffusion element into image light.

In addition, the reflection light guide element comprises a shell which is arranged in an enclosing mode to form an accommodating space, the shell comprises a light outlet opening, the light source is accommodated in the accommodating space, the direction control element is arranged at the light outlet opening, and the inner wall surface of the shell is a light reflection surface and used for reflecting light generated by the light source and emitting the light to the direction control element through the light outlet opening.

In addition, the transflective element is used for reflecting light in a first polarization state and transmitting light in a second polarization state, the image source device is used for generating first imaging light with the first polarization state and second imaging light with the second polarization state, and the first polarization state is perpendicular to the second polarization state.

In addition, the transflective element is used for reflecting light rays in a first wave band and transmitting light rays in a second wave band, and the image source device is used for generating first imaging light rays in the first wave band and second imaging light rays in the second wave band.

In addition, the transflective element is formed by stacking at least two film layers having different refractive indexes.

In addition, the head-up display system further includes: a selective reflection film; the selective reflection film is attached to the surface of the reflection device facing the light outlet; the selective reflection film is used for reflecting light rays with a preset wave band and transmitting light rays with wave bands other than the preset wave band; at least one of the first imaged light rays, the second imaged light rays, and the third imaged light rays includes light rays of the predetermined wavelength band.

In addition, the predetermined wavelength band includes at least one of a red wavelength band, a blue wavelength band, and a green wavelength band.

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 diagram of an arrangement of a first virtual image 11', a second virtual image 12', and a third virtual image 13' in a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a head-up display device according to a first embodiment of the invention;

FIG. 3 is a schematic diagram of another head-up display device according to a first embodiment of the invention;

FIG. 4 is a schematic diagram of a head-up display device according to a first embodiment of the present invention;

FIG. 5 is a schematic diagram of a head-up display device according to a first embodiment of the present invention;

FIG. 6 is a schematic structural view of a backlight assembly according to a first embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a light guide element according to a first embodiment of the present invention;

FIG. 8 is a schematic view of a pyramid-shaped light guide element structure according to a first embodiment of the present invention;

FIG. 9 is a schematic view of another light guide element according to the first embodiment of the present invention;

FIG. 10 is a schematic view of a light guide element according to the first embodiment of the present invention;

FIG. 11 is a schematic view of an anti-glare design in accordance with a first embodiment of the present invention;

fig. 12 is a schematic structural view of a head-up display device according to a second embodiment of the present invention;

FIG. 13 is a schematic diagram of another head-up display device according to a second embodiment of the present invention;

fig. 14 is a schematic structural diagram of a head-up display device according to a second embodiment of the present 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 inventor found that since the position of the image formed by the existing head-up display device is fixed from the human eye and the position of the real scene at each position outside the imaging window is different from the position of the human eye, when the head-up display device is used, since the driver needs to observe the real scene at each position outside the imaging window, the line of sight needs to be switched between the image at the fixed distance formed by the HUD and the real scene at each position outside the imaging window at different distances (except for observing the real scene at a certain position which is the same as or close to the imaging distance formed by the HUD, the line of sight needs to be switched when observing the real scenes at other positions), visual convergence adjustment conflict occurs, and visual fatigue phenomena such as blurring, dizziness, and the like occur to the driver, thereby reducing the driving safety.

Referring to fig. 1 to 11, a first embodiment of the present invention relates to a head-up display device for forming a virtual image by being projected on a reflection device 30, including: the imaging device comprises a shell 10, an image source device 1, a transflective element 20 and a reflecting element 2, wherein the shell 10 comprises a light outlet 101, the image source device 1, the transflective element 20 and the reflecting element 2 are all arranged in the shell 10, and the image source device 1 is used for generating a first imaging light ray A, a second imaging light ray B and a third imaging light ray C; the transflective element 20 comprises a first surface 201 and a second surface 202 which are oppositely arranged, and the transflective element 20 is used for receiving and reflecting a first imaging light ray A incident from the first surface 201 and receiving and transmitting a second imaging light ray B incident from the second surface 202; the reflection element 2 is configured to receive the first imaging light ray a reflected by the transflective element 20, the second imaging light ray B transmitted by the transflective element 20, and the third imaging light ray C generated by the image source device 1, and reflect the light outlet 101 to be projected on the reflection device 30 to form a first virtual image 11', a second virtual image 12', and a third virtual image 13', and an imaging position where at least two of the first virtual image 11', the second virtual image 12', and the third virtual image 13' exist is different from the reflection device 30.

That is, the image distances of at least two of the first virtual image 11', the second virtual image 12', and the third virtual image 13' are different, where the image distance may be a distance between the virtual image imaging position and the glass (reflection device), or may be equivalent to a distance between the imaging position of the virtual image on the reflection device 30 and the human eye.

Different contents are displayed at different distances through the three virtual images, for example, the imaging distance of the nearest virtual image (the third virtual image 13') can be 2-4 meters, and the nearest virtual image is a close-range picture and displays key driving data such as vehicle instruments and the like; the imaging distance of the middle distance virtual image (the second virtual image 12') can be 7-14 m, and is a middle scene picture, and the middle scene picture is fused and matched with a short distance real scene such as a road surface, for example, a lane line is marked by the middle scene picture; the imaging distance of the farthest virtual image (the first virtual image 11') can be 20-50 meters, and the farthest virtual image is a distant view picture and is fused and matched with a distant real scene such as a building, for example, a distant building is a bank, the distant view picture displays identification information of the bank and is displayed at a position corresponding to the real scene, and a driver can see not only the real scene of the bank but also an image matched with the real scene.

In this embodiment, the image source device 1 includes a first image source 11, a second image source 12 and a third image source 13, the first image source 11 is disposed in a first space on one side of the transflective element 20, the second image source 12 is disposed in a second space on the opposite side of the transflective element 20, the first image source 11, the second image source 12 and the third image source 13 are respectively configured to generate a first imaging light ray a, a second imaging light ray B and a third imaging light ray C, wherein the first imaging light ray a, the second imaging light ray B and the third imaging light ray C are respectively configured to form a first virtual image 11', a second virtual image 12' and a third virtual image 13 '.

Specifically, the transflective element 20 and the first and

second image sources

11 and 12 have the following embodiments:

1) the transflective element 20 has no wavelength or polarization selectivity and is a common transflective element.

For example, the transflective element 20 may reflect a portion of the light and transmit another portion of the light, e.g., the transflective element 20 may reflect 50% of the light and transmit 50% of the light, or the transflective element 20 may reflect 60% of the light and transmit 40% of the light, or the transflective element 20 may reflect 70% of the light and transmit 30% of the light, etc. That is, only a part of the first imaging light a from the first image source 11 is reflected by the transflective element 20 and then reflected by the reflective element 2 to reach the reflective device 30, and only a part of the second imaging light B from the second image source 12 is transmitted by the transflective element 20 and then reflected by the reflective element 2 to reach the reflective device 30, so that there is light loss and the imaging brightness is reduced, wherein the material of the common transflective element may include glass, transparent plastic, and the like.

2) The transflective element 20 has a polarization selectivity that reflects light of a first polarization state and transmits light of a second polarization state.

The first image source 11 emits a first imaging light ray A with a first polarization state, the second image source 12 emits a second imaging light ray B with a second polarization state, and the first polarization state is perpendicular to the second polarization state; the first imaging light ray a is reflected by the transflective element 20 and then reflected by the reflective element 2 to reach the reflective device 30, and the second imaging light ray B is transmitted by the transflective element 20 and then reflected by the reflective element 2 to reach the reflective device 30, with little or no light loss. Specifically, the first image source 11 and the second image source 12 may be LCD image sources emitting polarized light, wherein the polarization transflective element may include bef (bright Enhancement film) film, dbef (dual bright Enhancement film) film, and the like.

Optionally, the first polarization state may be an S polarization state, and the second polarization state may be a P polarization state; the first polarization state can also be any polarization state, and it is sufficient to ensure that the second polarization state is perpendicular to the first polarization state, including but not limited to a linear polarization state, a circular polarization state, and an elliptical polarization state.

3) The transflective element 20 has a wavelength selectivity that reflects light in a first wavelength band and transmits light in a second wavelength band.

The first image source 11 emits a first imaging light A with a first waveband, the second image source 12 emits a second imaging light B with a second waveband, the first waveband and the second waveband can be RGB wavebands, wherein the RGB waveband is a combination of a red light waveband, a blue light waveband and a green light waveband, specifically, the half-height width of each waveband of red light, blue light and green light in the RGB waveband is not more than 50nm, if the peak value of the blue light waveband is within a range of 410nm-480nm, the peak value of the green light waveband is within a range of 500nm-570nm, and the peak value of the red light waveband is within a range of 590nm-690 nm; the light of the first wavelength band and the light of the second wavelength band are different, specifically, the red light wavelength band, the blue light wavelength band and the green light wavelength band of the first wavelength band and the second wavelength band are different from each other, for example, the red light wavelength in the first wavelength band is 620nm, the green light wavelength is 520nm, and the blue light wavelength is 440 nm; the wavelength of red light in the second waveband is 650nm, the wavelength of green light is 550nm, and the wavelength of blue light is 450 nm.

The first imaging light ray A is reflected by the transflective element 20 and then reflected by the reflective element 2 to reach the reflecting device 30, the second imaging light ray B is transmitted by the transflective element 20 and then reflected by the reflective element 2 to reach the reflecting device 30, and the light ray loss is small; specifically, the first image source 11 and the second image source 12 may be LCD image sources or LED image sources emitting RGB mixed white light.

In this embodiment, the main optical axis of the first imaging light ray a and the main optical axis of the second imaging light ray B are axisymmetric with respect to the transflective element 20 (the transflective element 20 is sheet-shaped), so the first imaging light ray a and the second imaging light ray B emitted by the first image source 11 and the second image source 12 respectively pass through the transflective element 20 and then are combined, and finally the formed first virtual image 11 'and the second virtual image 12' are in a coaxial state, where coaxial specifically means that a central connecting line of the two virtual images and the human eye are close to or on the same straight line; moreover, the distance from the first image source 11 to the transflective element 20 is not equal to the distance from the second image source 12 to the transflective element 20, that is, the propagation distance of the first imaging light ray a between the first image source 11 and the transflective element 20 is not equal to the distance from the second image source 12 to the transflective element 20, that is, the optical paths of the imaging light rays are not equal, so the optical paths between the first image source 11 and the second image source 12 and the curved mirror are different, and the imaging distances of the first virtual image 11 'and the second virtual image 12' are different, so as to form the first virtual image 11 'and the second virtual image 12' with different coaxial image distances, thereby improving the utilization rate of the display area for displaying the driving information on the reflecting device 30.

Of course, the distance from the first image source 11 to the transflective element 20 and the distance from the second image source 12 to the transflective element 20 may also be equal, in this case, the optical paths between the first image source 11 and the second image source 12 and the curved mirror are the same, the imaging distances of the first virtual image 11 'and the second virtual image 12' are the same, and the first virtual image 11 'and the second virtual image 12' overlap, which is not limited herein. The first image source 11 and the second image source 12 may have the same or different areas, and the sizes of the first virtual image 11 'and the second virtual image 12' may be the same or different correspondingly.

In the present embodiment, the first virtual image 11', the second virtual image 12', and the third virtual image 13' are arranged as shown in fig. 1, and fig. 1 may be regarded as a view of an image formed by the head-up display device as viewed from the driver. In practical application, the imaging distances of the first virtual image 11', the second virtual image 12' and the third virtual image 13' may be arranged in any combination, such as in a near-far arrangement, a coaxial arrangement, or a non-coaxial arrangement, for example, the imaging distances of the coaxial virtual images 11' and 12' are closer, and the sizes of the areas of the first image source 11, the second image source 12 and the third image source 13 may also be set as required, which is not limited herein.

In practical applications, the reflective element 2 may include a curved reflective component for collecting and reflecting light rays, and the curved reflective component is configured to receive the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C and reflect the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C out of the light outlet 101. The curved reflecting component may include at least one curved reflector, and the curved reflector is used for reflecting the first imaging light ray a reflected by the transflective element 20, the second imaging light ray B transmitted by the transflective element 20, and the third imaging light ray C generated by the image source device 1, and reflecting the first imaging light ray a out of the light outlet 101.

Referring to fig. 2, in the present embodiment, the reflecting element 2 may include only one curved reflecting mirror (not including a plane reflecting mirror), that is, the curved reflecting member is one curved reflecting mirror. The curved reflector is configured to receive the first imaging light ray a reflected by the transflective element 20, the second imaging light ray B transmitted by the transflective element 20, and the third imaging light ray C generated by the image source device 1, and reflect the first imaging light ray a out of the light outlet 101.

Of course, the reflecting element 2 may also comprise only two curved mirrors (not including a plane mirror), i.e. the curved reflecting component comprises: a first curved reflector and a second curved reflector. The first curved reflector is used for receiving the first imaging light reflected by the transflective element and the second imaging light transmitted by the transflective element and reflecting the first imaging light out of the light outlet, and the second curved reflector is used for receiving the third imaging light generated by the image source device and reflecting the third imaging light out of the light outlet.

In practical applications, the reflective element may further include: a planar reflecting member for changing a light transmission direction, the planar reflecting member receiving the first imaging light ray a reflected by the transflective element 20, the second imaging light ray B transmitted by the transflective element 20, and the third imaging light ray C generated by the image source device 1, and reflecting the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C to the curved reflecting member; the curved surface reflection component is used for receiving the first imaging light ray a, the second imaging light ray B and the third imaging light ray C reflected by the plane reflection component and reflecting the first imaging light ray a, the second imaging light ray B and the third imaging light ray C out of the light outlet 101.

Referring to fig. 3, the curved reflecting member is a curved reflecting mirror 141, and the flat reflecting member is a flat reflecting mirror 151.

Specifically, the plane mirror 151 is configured to receive the first imaging light ray a reflected by the transflective element 20, the second imaging light ray B transmitted by the transflective element 20, and the third imaging light ray C generated by the image source apparatus 1, and reflect the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C to the curved mirror 141; the curved reflector 141 is configured to receive the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C reflected by the plane reflector 151, and reflect the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C out of the light outlet 101.

Referring to fig. 4, in another embodiment, the curved reflecting member is a curved mirror 141, and the plane reflecting member includes a first plane mirror 152 and a second plane mirror 153.

Specifically, the first plane mirror 152 is configured to receive the first imaging light ray a reflected by the transflective element 20 and the second imaging light ray B transmitted by the transflective element 20, and reflect the first imaging light ray a and the second imaging light ray B to the curved surface reflection component, and the second plane mirror 153 is configured to receive the third imaging light ray C generated by the image source apparatus 1, and reflect the third imaging light ray C to the curved surface mirror 141. The curved reflector 141 is configured to receive the first imaging light ray a reflected by the first planar reflector 152, the second imaging light ray B reflected by the second planar reflector 153, and the third imaging light ray C generated by the image source apparatus 1, and reflect the first imaging light ray a out of the light outlet 101.

It will be appreciated that the curved reflective member may also comprise two curved mirrors, i.e., the curved reflective member comprises a first curved mirror 142 and a second curved mirror 143. At this time, the first curved reflector 142 is configured to receive the first imaging light ray a and the second imaging light ray B reflected by the planar reflective member and reflect the first imaging light ray a and the second imaging light ray B out of the light outlet 101, and the second curved reflector 143 is configured to receive the third imaging light ray C reflected by the planar reflective member and reflect the third imaging light ray C out of the light outlet 101.

Referring to fig. 5, in one embodiment, the planar reflective member includes a first planar mirror 152 and a second planar mirror 153, and the curved reflective member includes a first curved mirror 142 and a second curved mirror 143.

Specifically, the first plane mirror 152 is configured to receive the first imaging light ray a reflected by the transflective element 20 and the second imaging light ray B transmitted by the transflective element 20, and reflect the first imaging light ray a and the second imaging light ray B to the first curved surface mirror 142, and the second plane mirror 153 is configured to receive the third imaging light ray C generated by the image source apparatus 1, and reflect the third imaging light ray C to the second curved surface mirror 143. The first curved reflector 142 is configured to receive the first imaging light a and the second imaging light B reflected by the first planar reflector 152 and reflect the first imaging light a and the second imaging light B out of the light outlet 101, and the second curved reflector 143 is configured to receive the third imaging light C reflected by the second planar reflector 153 and reflect the third imaging light C out of the light outlet 101.

Of course, the plane reflection component may also be a plane reflector, and the plane reflector is configured to receive the first imaging light reflected by the transflective element and the second imaging light transmitted by the transflective element, reflect the first curved surface reflector, and receive the third imaging light generated by the image source device and reflect the third imaging light to the second curved surface reflector, and after that, the functions of the first curved surface reflector 142 and the second curved surface reflector 143 are similar to those described above, and are not described herein again.

Specifically, each of the first image source 11, the second image source 12, and the third image source 13 may include a light source 110 for generating light, and a backlight assembly and an image generating element sequentially disposed on a light emitting side of the light source 110.

Referring to fig. 6, the backlight assembly may include a reflective light guide element 112, a direction control element 114, and a dispersing element 116 sequentially disposed at a light emitting side of the light source 110, wherein the reflective light guide element 112 is configured to collect light generated by the light source 110 and transmit the collected light to the direction control element 114, the direction control element 114 is configured to collect light from the reflective light guide element 112 and transmit the collected light to the dispersing element 116, the dispersing element 116 is configured to disperse light from the direction control element 114 and transmit the dispersed light to an image generating element (not shown), and the image generating element is configured to convert the light dispersed by the dispersing element into image light. Specifically, the reflective light guide element 112 is disposed on the light emitting side of the light source 110, the direction control element 114 is disposed on the light emitting side of the reflective light guide element 112 at the light emitting opening 1120, and the dispersing element 116 is disposed on the light emitting side of the reflective light guide element 112.

The Light source 110 is used for generating Light, and may include at least one electroluminescent element, which 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). The image generating element comprises a liquid crystal panel which can convert light rays emitted by the light source into image light rays.

Referring to fig. 7 and 8, in the present embodiment, the reflective light guide element 112 includes a housing enclosing to form an accommodating space, the housing includes a light exit opening 1120, the light source 110 is accommodated in the accommodating space and located at a bottom portion 1121 of the housing, and an inner wall surface 1122 of the housing is a light reflection surface to reflect the large-angle light generated by the light source 110 and exit to the direction control element 114 through the light exit opening 1120. That is to say, of the light emitted by the light source 110, the light with a smaller exit angle directly exits to the direction control element 114 through the light exit opening 1120, and the light with a larger exit angle (for example, the light with an exit angle larger than the included angle between the housing and the central axis of the reflective light guide element 112) is reflected by the inner wall surface 1122 and then gathered, thereby improving the utilization rate of the light source 110.

It should be noted that the external shape of the reflective light guide element 112 may be a triangular pyramid shape, a quadrangular pyramid shape, or a paraboloid shape (similar to a bowl shape). In this embodiment, the external shape of the reflective light guide element 112 is a quadrangular pyramid shape, the light exit opening 1120 and the bottom 1121 of the reflective light guide element 112 may be circular, elliptical, rectangular, square, trapezoidal, or parallelogram, and the light exit opening 1120 and the bottom 1121 may have the same or different shapes.

The direction control element 114 is disposed at the light-emitting opening 1120, that is, the direction control element 114 can be tightly attached to the light-emitting opening 1120 or keep a certain distance from the light-emitting opening 1120, and the direction control element 114 controls the direction of the light emitted from the reflective light guide element 112, so as to focus the light to a predetermined range, thereby further gathering the light and improving the light utilization rate. The direction control element 114 may be a lens or a lens combination, such as a convex lens, a fresnel lens or a lens combination, and in the embodiment, the direction control element 114 is a convex lens. It is understood that the predetermined range may be a point, such as a focal point of a convex lens, or a smaller area, and the direction control element 114 is disposed to focus the light rays with a large angle emitted from the light source 110, so as to improve the light utilization rate.

The diffusion element 116 diffuses light into a beam having a distribution angle, the smaller the diffusion angle, the higher the brightness of the beam, and vice versa. The diffusion element 116 diffuses the collected light at a certain angle, so as to increase the diffusion degree of the light and enable the light to be uniformly distributed in a certain area. The dispersing element 116 may be a diffractive optical element, such as a beam shaper (beamshaper), and the light beam after passing through the dispersing element 116 is dispersed and forms a beam with a specific cross-sectional shape, including but not limited to a line, a circle, an ellipse, a square, or a rectangle. By controlling the microstructure of the dispersion element 116, the dispersion angle, the cross-sectional shape, etc. of the light can be precisely controlled, and the dispersion effect can be precisely controlled.

In practical applications, light emitted from the light source 110 passes through the reflective light guide element 112 and the direction control element 114, and then is reflected by the reflective element 2, and finally reflected by the reflective device 30, the reflected light converges and falls into the center of the eye box, and further the light is accurately dispersed by the dispersion element 116, and the dispersed light beam can cover the eye box area 100, preferably just the eye box area 100, so that normal observation cannot be affected while high light efficiency is achieved.

It will be appreciated that the dispersed beam may be larger than the eye box area 100, as long as complete coverage of the eye box is ensured. Preferably, after the dispersion element 116 is arranged, the dispersed light beam just covers the eye box area 100, where the system is most efficient. Here, the eye box (eyebox) refers to an area where both eyes of the driver are located and the HUD image can be seen. The eye box area 100 is sized such that the driver's eyes are offset a distance, e.g., up and down, left and right, from the center of the eye box, and the image of the HUD can be seen while still within the eye box area 100.

It should be noted that the reflective light guide element 112 is not limited to the aforementioned housing structure, and may be other structures. For example, as shown in fig. 9, the reflective light guide element 112 includes a solid light-transmitting member, the refractive index of which is greater than 1, the solid light-transmitting member includes an end surface recessed to form a light source accommodating cavity 1124, a light exit surface 1120 opposite to the end surface, and a light reflection surface 1122 connecting the end surface and the light exit surface 1120, wherein the light reflection surface 1122 is an inner side of the surface of the solid light-transmitting member and reflects light rays through total reflection. Specifically, the light emitting surface 1120 is adjacent to the direction control element 114, the light source accommodating cavity 1124 includes a bottom wall 1124a opposite to the light emitting surface 1120, and a side wall 1124b extending from the periphery of the bottom wall 1124a, the light source 110 is disposed in the light source accommodating cavity 1124 and faces the bottom wall 1124a of the light source accommodating cavity 1124, and the bottom wall 1124a and the side wall 1124b are light incident surfaces of the light reflecting and guiding element 112.

Further, the bottom wall 1124a is provided with a collimating part 1128 protruding in a direction away from the light emitting surface 1120, the collimating part 1128 is used for receiving the light emitted from the light source 110 and converting the light into collimated light, and the collimated light may be light perpendicular to the light emitting surface 1120. Thus, a part of the light emitted from the light source 110 is totally reflected on the light reflecting surface 1122 of the light guiding element 112 and then emitted through the light emitting surface 1120, and another part of the light emitted from the light source 110 is directly emitted through the light emitting surface 1120 without being reflected by the light reflecting surface 1122 in the light guiding element 112.

Referring to fig. 10, it is understood that the collimating part 1128 may not be disposed on the bottom wall 1124a, but the light emitting surface 1120 is provided with a blind hole 1126 recessed toward the bottom wall 1124a, the collimating part 1128 is disposed on a bottom surface 1126a of the blind hole 1126, specifically, the bottom surface 1126a of the blind hole 1126 is provided with a collimating part 1128 protruding toward one side of the light emitting surface 1120, the collimating part 1128 is configured to emit light incident through the bottom wall 1124a and convert the light into collimated light, and the collimated light may be light perpendicular to the light emitting surface 1120. Under such an arrangement, the bottom wall 1124a is a plane parallel to the light emitting surface 1120, and besides, there are many other possibilities for designing the shape of the bottom wall 1124a, which are not described herein again.

As for the structure of the transflective element 20, it may be a structure in which at least two kinds of film layers having different refractive indexes are stacked, for example, a selective transflective film in which an inorganic oxide thin film or a polymer thin film is stacked, and the transflective film is a structure in which at least two kinds of film layers having different refractive indexes are stacked. The term "different refractive index" used herein means that the refractive index of the film layer is different in at least one of the x, y and z directions; the film layers with different refractive indexes are selected in advance, the film layers are stacked according to a preset sequence, a transflective film with selective reflection and selective transmission characteristics can be formed, and the transflective film can selectively reflect light with one characteristic and transmit light with the other characteristic.

Specifically, for the film layer of the inorganic oxide material, the composition of the film layer is selected from one or more of tantalum pentoxide, titanium dioxide, magnesium oxide, zinc oxide, zirconium oxide, silicon dioxide, magnesium fluoride, silicon nitride, silicon oxynitride and aluminum fluoride. For the film layer of the organic high molecular material, the film layer of the organic high molecular material comprises at least two thermoplastic organic polymer film layers; the two thermoplastic polymer film layers are alternately arranged to form the optical film, and the refractive indexes of the two thermoplastic polymer film layers are different. The molecules of the organic polymer material are in a chain structure, and the molecules are arranged in a certain direction after being stretched, so that the refractive indexes in different directions are different, namely, the required film can be formed through a specific stretching process. The thermoplastic polymer can be PET (polyethylene terephthalate) and derivatives thereof with different polymerization degrees, PEN (polyethylene naphthalate) and derivatives thereof with different polymerization degrees, PBT (polybutylene terephthalate) and derivatives thereof with different polymerization degrees, and the like.

In the specific implementation process, the transflective element 20 is attached or plated on the surface of a transparent substrate, which is convenient for the installation of the transflective element 20, and the transparent substrate includes glass, transparent polymer material or quartz, etc.

Referring to fig. 11, for anti-glare, the part of the anti-glare film is mainly the transparent anti-dust film 40 disposed at the HUD light exit 101, and the anti-dust film 40 is mainly used to prevent dust and impurities from entering the HUD, so the anti-dust film 40 is a transparent film, but sunlight can generate strong glare on the surface of the anti-dust film 40, and therefore, the anti-glare cover 50 is disposed at the HUD light exit 101, and the light exit surface of the anti-glare cover 50 is an inclined surface, so that the glare is prevented from entering human eyes.

This new line display device can be used to automotive filed, and reflection device 30 specifically can be windshield, and the formation of image light of each image source outgoing finally reflects on reflection device 30, and formation of image light outgoing after the reflection is to eye box region 100, and the driver just can see the virtual image that is formed in the reflection device 30 outside, does not influence the observation to external environment simultaneously.

In practical applications, the housing 10 housing the image source device 1, the transflective element 20 and the reflective element 2 may be installed in an instrument desk of an automobile, and the light outlet 101 is disposed on a surface of the instrument desk, so that light emitted through the light outlet 101 can be reflected on a windshield and emitted to the eye box area 100 (i.e., form a virtual image) to be observed by a driver.

Compared with the prior art, in the embodiment of the invention, because the imaging positions of at least two of the first virtual image 11', the second virtual image 12' and the third virtual image 13' are different from the distance of the reflecting device 30, that is, there are at least two of the first, second, and third virtual images 11', 12', 13' that have different image distances, that is, at least two of the three images display different content at different distances, so that at least three images with different image distances can be respectively matched and fused with the real scenes with different distances, when the head-up display device is used, a driver does not need to switch the sight line between the image with the fixed distance formed by the head-up display device and the live-action with different distances outside the imaging window, the visual convergence adjustment conflict is improved, visual fatigue phenomena such as blurring, dizziness and the like are caused to the driver, and the driving safety is improved.

Referring to fig. 12 to 14, a second embodiment of the present invention relates to a head up display device. The second embodiment is substantially the same as the first embodiment, and mainly differs therefrom in that:

in the first embodiment, the image source apparatus 1 includes a first image source 11, a second image source 12, and a third image source 13; the first image source 11, the second image source 12 and the third image source 13 are respectively used for generating a first imaging ray A, a second imaging ray B and a third imaging ray C;

in the second embodiment of the present invention, the image source apparatus 1 includes a first image source 11 and a second image source 121; the first image source 11 is used for generating a first imaging ray A; the second image source 121 comprises a first region 12 'for generating the second imaging light ray B and a second region 13' for generating the third imaging light ray C, wherein the first image source 11 is arranged in a first space on one side of the transflector element 20 and the second image source 121 is arranged in a second space on the opposite side of the transflector element 20. By the arrangement, the structure of the head-up display device is simpler.

The embodiments of the transflective element 20 and the first and

second image sources

11 and 121 are similar to those of the first embodiment, and are not repeated herein.

Similarly, in the present embodiment, the principal optical axis of the first imaging light ray a and the principal optical axis of the second imaging light ray B are axisymmetric with respect to the transflective element 20 (the transflective element 20 is in a sheet shape), so the first imaging light ray a and the second imaging light ray B emitted by the first image source 11 and the first region 12' respectively pass through the transflective element 20 and then are combined in optical path. Moreover, the distance from the first image source 11 to the transflective element 20 is not equal to the distance from the first region 12' to the transflective element 20, that is, the propagation distance of the first imaging light ray a between the first image source 11 and the transflective element 20 is not equal to the distance from the second imaging light ray B between the first region 12' and the transflective element 20, that is, the optical path lengths are not equal, so that the optical paths between the first image source 11 and the first region 12' and the curved mirror are different, and the imaging distances of the first virtual image 11' and the second virtual image 12' are different, so as to form the first virtual image 11' and the second virtual image 12' with different coaxial image distances, thereby improving the utilization rate of the display region for displaying driving information on the reflection device 30.

Of course, the distance from the first region 12 'to the transflective element 20 and the distance from the second region 13' to the transflective element 20 may also be equal, in this case, the optical paths between the first region 12 'and the second region 13' and the curved mirror are the same, the imaging distances of the first virtual image 11 'and the second virtual image 12' are the same, and the first virtual image 11 'and the second virtual image 12' overlap, which is not limited herein.

The areas of the first region 12 'and the second region 13' may be the same or different, and correspondingly, the sizes of the first virtual image 11 'and the second virtual image 12' are the same or different.

In the case where the "second image source 121 includes the first region 12 'for generating the second imaging light ray B and the second region 13' for generating the third imaging light ray C", there are also various arrangements of the curved reflecting member and the flat reflecting member, as exemplified below:

referring to fig. 12, in the present embodiment, the curved surface reflecting member is a curved surface reflecting mirror 141, and the plane reflecting member is a plane reflecting mirror 151.

Specifically, the plane mirror 151 is configured to receive the first imaging light ray a reflected by the transflective element 20, the second imaging light ray B transmitted by the transflective element 20, and the third imaging light ray C generated by the image source apparatus 1, and reflect the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C to the curved mirror 141; the curved reflector 141 is configured to receive the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C reflected by the planar reflector, and reflect the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C out of the light outlet 101.

Referring to fig. 13, in another embodiment, the plane reflection part includes a first plane mirror 152 and a second plane mirror 153, and the curved surface reflection part is a curved surface mirror 141.

Specifically, the first plane mirror 152 is configured to receive the first imaging light ray a reflected by the transflective element 20 and the second imaging light ray B transmitted by the transflective element 20, and reflect the first imaging light ray a and the second imaging light ray B to the curved surface mirror 141, and the second plane mirror 153 is configured to receive the third imaging light ray C generated by the image source apparatus 1, and reflect the third imaging light ray C to the curved surface mirror 141. The curved reflector 141 is configured to receive the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C reflected by the planar reflector, and reflect the first imaging light ray a, the second imaging light ray B, and the third imaging light ray C out of the light outlet 101.

Referring to fig. 14, in yet another alternative embodiment, the planar reflective member includes a first planar mirror 152 and a second planar mirror 153, and the curved reflective member includes a first curved mirror 142 and a second curved mirror 143.

It is understood that the reflective element 2 may also include only at least one curved reflector, instead of the flat reflector, for receiving the first imaging light ray a reflected by the transflective element 20, the second imaging light ray B transmitted by the transflective element 20, and the third imaging light ray C generated by the image source apparatus 1 and reflecting the first imaging light ray a out of the light outlet 101.

Compared with the prior art, in the embodiment of the invention, because at least two of the first virtual image 11', the second virtual image 12' and the third virtual image 13 'have different imaging positions and distances from the reflection device 30, that is, at least two of the first virtual image 11', the second virtual image 12 'and the third virtual image 13' have different image distances, that is, at least two of the three images display different contents at different distances, so that the three images with at least two different image distances can be respectively matched and fused with the real scenes at different distances, and in the using process of the head-up display device, a driver does not need to switch the sight line between the image with the fixed distance formed by the head-up display device and the real scenes with different distances outside the imaging window, so that the phenomena of vision vergence adjustment conflict, such as blurring, dizziness, and the like of the driver are improved, and the driving safety is improved, meanwhile, the head-up display device in the embodiment has a compact structure and occupies a small installation space.

A third embodiment of the present invention relates to a head-up display system including: reflecting device and as above-mentioned new line display device, reflecting device is used for receiving the light-emitting outlet outgoing first image light, second image light with behind the third image light, form first virtual image the second virtual image with the third virtual image.

The head-up display device in this embodiment is similar to that in the first and second embodiments, and is not described herein again, and those skilled in the art can understand that this embodiment is an example of a system corresponding to the first and second embodiments, and that the technical details in the first and second embodiments and the technical details in the embodiment are mutually applicable, and this embodiment can achieve similar technical effects, and is not described herein again.

Alternatively, when the reflecting device is a curved surface, such as a windshield, the position of the image source relative to the virtual image of the curved reflecting mirror may be located at the focal plane of the reflecting device 30. According to the curved surface imaging rule, the formed virtual image can be formed at a longer distance or even at infinity, so that the virtual image can be better matched and attached with a distant real scene. In practical application, any one of the first image source 11, the second image source 12 and the third image source 13 may be disposed at a focal plane, and specifically, may be an image source whose virtual image is farthest away; alternatively, the image source may be disposed at a distance smaller than and adjacent to the focal plane, for example, 0.01, 0.05, 0.1 times the focal length from the focal plane.

In order to eliminate the ghost image, the head-up display system further includes: a selective reflection film; the selective reflection film is attached to the surface of the reflection device facing the light outlet; the selective reflection film is used for reflecting light rays with a preset wave band and transmitting light rays with wave bands other than the preset wave band; at least one of the first imaged light, the second imaged light, and the third imaged light includes light of the predetermined wavelength band, wherein the predetermined wavelength band may include at least one of a red wavelength band, a blue wavelength band, and a green wavelength band. For example, the imaging light includes light of three bands of RGB, the image source may be an LCD display including RGB mixed white light or an LED display including RGB sub-light emitting units, the full width at half maximum of each band of red light, blue light and green light in the RGB bands is not more than 50nm, for example, the peak value of the blue light band is located in the range of 410nm to 480nm, the peak value of the green light band is located in the range of 500nm to 570nm, and the peak value of the red light band is located in the range of 590nm to 690 nm; the selective reflection film reflects only the image forming light of the RGB band and transmits other light, so that the image forming light hardly undergoes secondary reflection at the inner surface of the outer side of the transflective element 20 (the side of the transflective element 20 away from the reflective element 222), thereby eliminating ghost images.

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 for projecting light on a reflective device to form a virtual image, comprising: the device comprises a shell, an image source device, a transflective element and a reflecting element, wherein the shell comprises a light outlet, and the image source device, the transflective element and the reflecting element are all arranged in the shell;

the image source device is used for generating first imaging light rays, second imaging light rays and third imaging light rays;

the transflective element comprises a first surface and a second surface which are oppositely arranged, and is used for receiving and reflecting the first imaging light rays incident from the first surface and receiving and transmitting the second imaging light rays incident from the second surface;

the reflecting element is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays, and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays out of the light outlet so as to be projected on the reflecting device to form a first virtual image, a second virtual image and a third virtual image;

the imaging positions at which at least two of the first virtual image, the second virtual image, and the third virtual image exist are different from the distance of the reflection device.

2. The heads-up display device of claim 1 wherein the reflective element includes a curved reflective member for gathering and reflecting light;

the curved surface reflecting component is used for receiving the first imaging light, the second imaging light and the third imaging light and reflecting the first imaging light, the second imaging light and the third imaging light out of the light outlet.

3. The heads-up display device of claim 2 wherein the curved reflective member comprises at least one curved mirror;

the curved surface reflector is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays generated by the image source device and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays out of the light outlet.

4. The heads-up display device of claim 3 wherein the curved reflective member is a curved mirror;

5. The heads-up display device of claim 3 wherein the curved reflective member comprises a first curved mirror and a second curved mirror;

the first curved surface reflector is used for receiving the first imaging light rays reflected by the transflective element and the second imaging light rays transmitted by the transflective element and reflecting the first imaging light rays and the second imaging light rays out of the light outlet;

the second curved surface reflector is used for receiving third imaging light generated by the image source device and reflecting the third imaging light out of the light outlet.

6. The heads-up display device of claim 2 wherein the reflective element further comprises: a plane reflection member for changing a light transmission direction;

the plane reflection part is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays generated by the image source device and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays to the curved surface reflection part;

the curved surface reflecting component is used for receiving the first imaging light, the second imaging light and the third imaging light reflected by the plane reflecting component and reflecting the first imaging light, the second imaging light and the third imaging light out of the light outlet.

7. The heads-up display device of claim 6 wherein the curved reflective member is a curved mirror and the planar reflective member is a planar mirror;

the plane reflector is used for receiving the first imaging light rays reflected by the transflective element, the second imaging light rays transmitted by the transflective element and the third imaging light rays generated by the image source device and reflecting the first imaging light rays, the second imaging light rays and the third imaging light rays to the curved reflector;

the curved surface reflector is used for receiving the first imaging light, the second imaging light and the third imaging light reflected by the plane reflector and reflecting the first imaging light, the second imaging light and the third imaging light out of the light outlet.

8. The heads-up display device of claim 6 wherein the curved reflective member is a curved mirror and the planar reflective member comprises a first planar mirror and a second planar mirror;

the first plane reflector is used for receiving the first imaging light rays reflected by the transflective element and the second imaging light rays transmitted by the transflective element and reflecting the first imaging light rays and the second imaging light rays to the curved reflector;

the second plane reflector is used for receiving third imaging light generated by the image source device and reflecting the third imaging light to the curved surface reflector.

9. The heads-up display device of claim 6 wherein the curved reflective member comprises a first curved mirror and a second curved mirror;

the first curved surface reflector is used for receiving the first imaging light rays and the second imaging light rays reflected by the plane reflection part and reflecting the first imaging light rays and the second imaging light rays out of the light outlet;

the second curved reflector is used for receiving the third imaging light reflected by the plane reflection component and reflecting the third imaging light out of the light outlet.

10. The heads-up display device of claim 9 wherein the planar reflective member is a planar mirror;

the plane reflector is used for receiving the first imaging light reflected by the transflective element and the second imaging light transmitted by the transflective element, reflecting the first imaging light to the first curved reflector, receiving the third imaging light generated by the image source device and reflecting the third imaging light to the second curved reflector.

11. The heads-up display device of claim 9 wherein the planar reflective member comprises a first planar mirror and a second planar mirror;

the first plane reflector is used for receiving the first imaging light rays reflected by the transflective element and the second imaging light rays transmitted by the transflective element, and reflecting the first imaging light rays to the first curved reflector;

the second plane reflector is used for receiving the third imaging light and reflecting the third imaging light to the second curved reflector.

12. The head-up display device according to any one of claims 1 to 11, wherein the image source device comprises a first image source, a second image source and a third image source, the first image source is disposed in a first space on one side of the transflective element, and the second image source is disposed in a second space on the opposite side of the transflective element;

the first image source, the second image source and the third image source are respectively used for generating the first imaging light, the second imaging light and the third imaging light.

13. The heads-up display device of claim 12 wherein a principal optical axis of the first imaged light ray and a principal optical axis of the second imaged light ray are axisymmetric with respect to the transflector element, and wherein a distance from the first image source to the transflector element and a distance from the second image source to the transflector element are unequal.

14. The heads-up display device of any one of claims 1 to 11 wherein the image source device includes a first image source and a second image source;

the first image source is used for generating the first imaging light;

the second image source comprises a first area for generating the second imaging light rays and a second area for generating the third imaging light rays;

the first image source is arranged in a first space on one side of the transflective element, and the second image source is arranged in a second space on the opposite side of the transflective element.

15. The heads-up display device of claim 14 wherein a principal optical axis of the first imaged light ray and a principal optical axis of the second imaged light ray are axisymmetric with respect to the transflector element, and wherein a distance from the first image source to the transflector element and a distance from the second region to the transflector element are unequal.

16. The head-up display device according to claim 12 or 14, wherein at least one of the first image source and the second image source comprises a light source for generating light, a backlight assembly and an image generating element sequentially arranged on a light emitting side of the light source;

the backlight assembly comprises a reflection light guide element, a direction control element and a dispersion element which are arranged on the light emitting side of the light source in sequence;

the reflecting light guide element is used for collecting the light rays generated by the light source and conducting the collected light rays to the direction control element;

the direction control element is used for converging the light rays from the reflection light guide element and transmitting the converged light rays to the dispersion element;

the diffusion element is used for diffusing the light rays from the direction control element and transmitting the diffused light rays to the image generation element;

the image generation element is used for converting the light diffused by the diffusion element into image light.

17. The head-up display device according to claim 16, wherein the reflective light guide element comprises a housing enclosing to form an accommodating space, the housing comprises a light exit opening, the light source is accommodated in the accommodating space, the direction control element is disposed at the light exit opening, and an inner wall surface of the housing is a light reflection surface to reflect light generated by the light source and exit to the direction control element through the light exit opening.

18. The head-up display device of claim 1, wherein the transflective element is configured to reflect light of a first polarization state and transmit light of a second polarization state, the image source device is configured to generate first image light having the first polarization state and second image light having the second polarization state, and the first polarization state is perpendicular to the second polarization state.

19. The head-up display device of claim 1, wherein the transflective element is configured to reflect light in a first wavelength band and transmit light in a second wavelength band, and the image source device is configured to generate a first image of light in the first wavelength band and a second image of light in the second wavelength band.

20. The head-up display device of claim 1, wherein the transflective element is formed by stacking at least two film layers having different refractive indices.

21. A heads-up display system, comprising: a reflective device, and the head-up display device of any one of claims 1 to 20;

the reflecting device is used for receiving the first imaging light, the second imaging light and the third imaging light emitted from the light outlet, and then the first virtual image, the second virtual image and the third virtual image are formed.

22. The heads-up display system of claim 21 further comprising: a selective reflection film;

the selective reflection film is attached to the surface of the reflection device facing the light outlet;

the selective reflection film is used for reflecting light rays with a preset wave band and transmitting light rays with wave bands other than the preset wave band;

at least one of the first imaged light rays, the second imaged light rays, and the third imaged light rays includes light rays of the predetermined wavelength band.

23. The heads-up display system of claim 22 wherein the predetermined wavelength band includes at least one of a red wavelength band, a blue wavelength band, and a green wavelength band.