CN115951493A

CN115951493A - Image generation unit and head-up display device

Info

Publication number: CN115951493A
Application number: CN202111594615.8A
Authority: CN
Inventors: 林士逸
Original assignee: Coretronic Corp
Current assignee: Coretronic Corp
Priority date: 2021-10-08
Filing date: 2021-12-24
Publication date: 2023-04-11
Also published as: TW202316174A

Abstract

An image generation unit includes a display panel, a first illumination system, and a second illumination system. The display panel is provided with a first imaging plane and a second imaging plane which are adjacently arranged and located on the same plane. The first illumination system is used for providing a first light beam, the first light beam is incident on a first imaging surface at a first incidence angle, and the first imaging surface converts the first light beam into a first image light beam. The second illumination system is used for providing a second light beam, the second light beam is incident on a second imaging surface at a second incident angle, and the second imaging surface converts the second light beam into a second image light beam. The transmission path of the first light beam incident on the first imaging plane and the transmission path of the second light beam incident on the second imaging plane are not intersected with each other, and the first image light beam and the second image light beam leave the display panel at different light-emitting angles. A head-up display device comprising the image generation unit is also presented. The integral framework of the image generation unit and the head-up display device has the advantages of small volume, low power consumption, low cost and the like.

Description

Image generation unit and head-up display device

Technical Field

The present invention relates to an optical device, and more particularly, to an image generating unit and a head-up display device.

Background

Head-up displays (HUDs) are widely used in airplanes, land vehicles, retail shop windows to present information to users superimposed on the surroundings. Many in-vehicle heads-up displays have a Picture Generation Unit (PGU) and an imaging module. The imaging module projects the information image generated by the image generating unit to the outside of the windshield, so that a driver can see the driving information provided by the in-vehicle information system without looking at an instrument panel or a navigator by lowering the head when driving.

In the current head-up display technology, a single image generation unit can only provide a single field of view (FOV) and generate a single virtual image, so that the information that can be displayed by the head-up display is limited. Therefore, in the prior art, if a head-up display system capable of providing two fields of view and two virtual images simultaneously needs to be achieved, two sets of image generation units must be used, which makes the head-up display system larger in size. In addition, since the head-up display system requires two sets of image generating units, the number of components and the production cost required for the head-up display system are increased.

The background section is provided to facilitate an understanding of the present disclosure, and thus, the disclosure in the background section may include other techniques that do not constitute a prior art with respect to the disclosure in the background section. The statements in the "background" section do not represent that matter or the problems which may be solved by one or more embodiments of the present invention, but are known or appreciated by those skilled in the art before filing the present application.

Disclosure of Invention

The invention provides an image generation unit and a head-up display device, wherein a single image generation unit is used for simultaneously setting two imaging surfaces.

Other objects and advantages of the present invention will be further understood from the technical features disclosed in the present invention.

To achieve one or a part or all of the above or other objects, the present invention provides an image generating unit comprising: the display panel is provided with a first imaging plane and a second imaging plane which are adjacently arranged and positioned on the same plane; the first illumination system is used for providing a first light beam, the first light beam is incident on the first imaging surface of the display panel at a first incidence angle, and the first imaging surface converts the first light beam into a first image light beam; and the second illumination system is configured to provide a second light beam, the second light beam is incident on the second imaging plane of the display panel at a second incident angle, the second imaging plane converts the second light beam into a second image light beam, a transmission path of the first light beam incident on the first imaging plane and a transmission path of the second light beam incident on the second imaging plane do not intersect with each other, and the first image light beam and the second image light beam leave the display panel at different light-emitting angles.

The present invention further provides a head-up display device for projecting a first image beam and a second image beam onto a target device, comprising: an image generation unit comprising: a display panel, a first illumination system, and a second illumination system; the display panel is provided with a first imaging plane and a second imaging plane which are adjacently arranged and located on the same plane; the first illumination system is used for providing a first light beam, the first light beam is incident on the first imaging surface of the display panel at a first incidence angle, and the first imaging surface converts the first light beam into a first image light beam; and the second illumination system is used for providing a second light beam, the second light beam is incident on the second imaging surface of the display panel at a second incidence angle, and the second imaging surface converts the second light beam into the second imaging light beam; the transmission path of the first light beam incident on the first imaging plane does not intersect with the transmission path of the second light beam incident on the second imaging plane, and the first image light beam and the second image light beam leave the display panel at different light-emitting angles; an image transmission module for transmitting the first image beam and the second image beam from the image generation unit to the target element to form a first virtual image and a second virtual image, respectively.

Based on the above, by using the architecture of the image generation unit, through the design of the illumination system and the light transmission assembly, the function of simultaneously providing the illumination beams to two imaging surfaces of one display panel by using one image generation unit can be achieved, and the two imaging surfaces are both provided with the illumination systems capable of independently providing the respective imaging surfaces, so that the illumination systems of the two imaging surfaces can have better efficiency performance. Therefore, the overall architecture of the image generation unit and the head-up display device has the advantages of small volume, low power consumption, low cost and the like.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic diagram of an image generation unit according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a head-up display device according to an embodiment of the invention.

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

Detailed Description

The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of a preferred embodiment when read in conjunction with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

Fig. 1 is a schematic diagram of an image generation unit according to an embodiment of the present invention. Fig. 2 is a schematic diagram of a head-up display device according to an embodiment of the invention. Referring to fig. 1 and 2, the image generating unit 100 of the head-up display device 200 provides the first image beam I1 and the second image beam I2, and projects the first image beam I1 and the second image beam I2 to the target element 220. In the present embodiment, the head-up display device 200 is used in a vehicle such as an automobile, for example, and is mounted below the dashboard of the automobile. The target element 220 is, for example, a windshield of a motor vehicle. The first image beam I1 and the second image beam I2 are reflected to the eyes E of the viewer (e.g. driving of a vehicle) by the target device 220, so that the viewer can view a first virtual image VM1 and a second virtual image VM2 with different imaging distances and different driving information in front of the target device 220 (windshield).

Fig. 1 is a schematic diagram of an image generation unit according to an embodiment of the present invention. As shown in fig. 1, the image generation unit 100 includes a display panel 150, a first illumination system 110, and a second illumination system 130. The display panel 150 includes a first imaging plane 152 and a second imaging plane 154 disposed adjacently to correspond to the first illumination system 110 and the second illumination system 130, respectively, and the first imaging plane 152 and the second imaging plane 154 are located on the same plane of the display panel 150 to provide different or related image information, respectively.

As shown in fig. 1, the first illumination system 110 is configured to provide a first light beam L1, and the first imaging plane 152 of the display panel 150 is located on a transmission path of the first light beam L1. The first light beam L1 is incident on the first imaging plane 152 of the display panel 150 at a first incident angle θ 1I, and the first imaging plane 152 converts the first light beam L1 into a first image light beam I1. The second illumination system 130 is configured to provide a second light beam L2, a second imaging plane 154 of the display panel 150 is located on a transmission path of the second light beam L2, the second light beam L2 is incident on the second imaging plane 154 of the display panel 150 at a second incident angle θ 2I, and the second imaging plane 154 converts the second light beam L2 into a second image light beam I2.

As shown in fig. 1, the first illumination system 110 includes a first light source 112, a collimating lens 114, and a light delivery assembly 120. The first light source 112 of the first illumination system 110 emits a first light beam L1, and the first light beam L1 sequentially passes through the collimating lens 114 and the light transmitting assembly 120 to enter the first imaging plane 152 of the display panel 150.

According to some embodiments, the first light beam L1 may be monochromatic light or polychromatic light, which is not limited in the present invention. According to some embodiments, the first light source 112 of the first lighting system 110 is one or more light-emitting elements. The number of the light emitting devices can be determined according to the requirement, and the invention is not limited thereto. According to some embodiments, the light emitting device is a light emitting diode or a laser diode, or other devices with similar properties, which is not limited by the invention.

The collimating lens 114 of the first illumination system 110 is located on a transmission path of the first light beam L1 from the first light source 112 to collimate the first light beam L1. According to some embodiments, the collimating lens 114 makes the divergence angle of the collimated first light beam L1 smaller than 1 °, but may be other suitable angles according to system requirements, and the invention is not limited thereto.

As shown in fig. 1, the light transfer component 120 of the first illumination system 110 includes a lens 122, a lens 124 and a reflector 126. In the embodiment, the number of the lenses of the light transmission assembly 120 is 2, and the number of the reflectors is 1, but the number of the lenses and the reflectors may be other suitable numbers according to the system requirement, and the invention is not limited thereto.

The first light beam L1 emitted by the first light source 112 sequentially passes through the collimating lens 114, the lens 122, the lens 124 and the reflector 126, and is reflected by the reflector 126 to the first imaging surface 152 of the display panel 150. By adjusting the arrangement of the first light source 112, the collimating lens 114, and the light transmitting element 120, particularly the angle of the reflector 126, the incident angle of the first light beam L1 incident on the first imaging plane 152 can be adjusted to be the first incident angle θ 1i. The mirror 126 in this embodiment is a plane mirror. In other embodiments, the optical elements of the optical transmission assembly 120 may have other combinations and arrangements, and the invention is not limited thereto.

As shown in fig. 1, the second illumination system 130 includes a second light source 132, a collimating lens 134, and a light delivery assembly 140. The second light source 132 of the second illumination system 130 emits a second light beam L2, and the second light beam L2 sequentially passes through the collimating lens 134 and the light transmitting assembly 140 and enters the second image plane 154 of the display panel 150.

According to some embodiments, the second light beam L2 may be monochromatic light or polychromatic light, which is not limited by the invention. According to some embodiments, the second light beam L2 may be the same color as the first light beam L1, or may be different color from the first light beam L1, which is not limited in the disclosure. According to some embodiments, the second light source 132 is one or more light emitting elements. The number of the light emitting devices can be determined according to the requirement, and the invention is not limited thereto. According to some embodiments, the number of the light emitting elements of the second light source 132 may be the same as or different from the number of the light emitting elements of the first light source 112, and the invention is not limited thereto. According to some embodiments, the light emitting device is a light emitting diode or a laser diode, or other devices with similar properties, which is not limited by the invention.

The collimating lens 134 of the second illumination system 130 is located on a transmission path of the second light beam L2 from the second light source 132 to collimate the second light beam L2. According to some embodiments, the collimating lens 134 makes the divergence angle of the collimated second light beam L2 smaller than 1 °, but may be other suitable angles according to system requirements, and the invention is not limited thereto.

As shown in fig. 1, the light transfer component 140 of the second illumination system 130 includes a lens 142, a reflector 144 and a lens 146. In the embodiment, the number of the lenses of the light transmission assembly 140 is 2, and the number of the reflectors is 1, but the number of the lenses and the reflectors may be other suitable numbers according to the system requirements, and the invention is not limited thereto.

The second light beam L2 emitted from the second light source 132 passes through the collimating lens 134, the lens 142, the reflector 144 and the lens 146 in sequence, and is incident on the second imaging surface 154 of the display panel 150. By adjusting the arrangement of the second light source 132, the collimating lens 134, and the light transfer component 140, the incident angle of the second light beam L2 incident on the second imaging plane 154 can be adjusted to be the second incident angle θ 2i. In other embodiments, the optical elements of the light transmission assembly 140 may have other combinations and arrangements, which are not limited in the present invention.

A transmission path of the first light beam L1 incident on the first imaging plane 152 and a transmission path of the second light beam L2 incident on the second imaging plane 154 do not intersect each other, and the first image light beam I1 and the second image light beam I2 leave the display panel 150 at a first light-exiting angle θ 1o and a second light-exiting angle θ 2o, respectively. The first light-exiting angle θ 1o and the second light-exiting angle θ 2o are included angles between the normal N and directions of the first light beam L1 and the second light beam L2 leaving the display panel 150.

Since the first incident angle θ 1i at which the first light beam L1 enters the first imaging plane 152 is different from the second incident angle θ 2i at which the second light beam L2 enters the second imaging plane 154, the optical paths of the first light beam L1 and the second light beam L2 may interfere with each other, so that a portion of the first light beam L1 enters the second imaging plane 154 or a portion of the second light beam L2 enters the first imaging plane 152, and further unnecessary stray light and ghost images are generated in subsequent images.

Therefore, as shown in fig. 1, the mirror 126 of the light transmitting assembly 120 of the first illumination system 110 is disposed between the first illumination system 110 and the second illumination system 130, so that a transmission path of the first light beam L1 incident on the first imaging plane 152 and a light path of the second light beam L2 incident on the second imaging plane 154 do not intersect with each other. For example, the reflector 126 is disposed between the two illumination systems by being fixed to a housing (not shown) of the head-up display, and in more detail, the reflector 126 is disposed at one side of the display panel 150 and can be tilted with respect to the display panel 150 according to an actual light path, so that the first light beam L1 is incident on the first imaging plane 152 of the display panel 150 at a first incident angle θ 1i. By the arrangement of the reflector 126, the interference of the first light beam L1 and the second light beam L2 on the optical paths of the first imaging plane 152 and the second imaging plane 154 can be effectively blocked, and the reflector arrangement of the first illumination system 110 is provided to satisfy the limitation of the first incident angle θ 1i of the first light beam L1 emitted by the first illumination system 110 required by the first imaging plane 152.

According to some embodiments, the reflecting surface of the mirror 126 can reflect the first light beam L1, and the other surface of the mirror 126, i.e. the opposite surface of the reflecting surface, has a light absorbing element to absorb the second light beam L2 incident on the mirror, so as to prevent the stray light generated by the second light beam L2 in the light path from entering the light path of the first light beam L1 or entering the first imaging surface 152 of the display panel 150.

According to some embodiments, the display panel 150 is a liquid crystal display panel 150 or other devices with similar functions, and the first imaging plane 152 and the second imaging plane 152 of the display panel 150 provide different image information, for example, so that the first virtual image VM1 and the second virtual image VM2 formed by the first image light beam I1 and the second image light beam I2 can present different driving information. According to some embodiments, the first virtual image VM1 formed by the first image beam I1 may include fixed driving information, such as vehicle speed, oil amount, mileage, speed limit, and the second virtual image VM2 formed by the second image beam I2 may include driving information matched with road conditions, such as left and right turn signs, landmark information, warning signs, and the like, which is not limited in the disclosure.

The image generating unit 100 further includes a diffusing element 160, and the diffusing element 160 is located on an optical path on which the first light beam L1 is incident on the first imaging surface 152 and an optical path on which the second light beam L2 is incident on the second imaging surface 154. The diffusion element 160 is disposed on the light incident surface of the display panel 150. According to some embodiments, the image generation unit 100 may not include the diffusion element 160, and the invention is not limited thereto.

As shown in fig. 1, the diffusion element 160 includes a first diffusion element 162 and a second diffusion element 164. The first diffusion element 162 is disposed on the first imaging plane 152 of the display panel 150 corresponding to the first imaging plane 152 of the display panel 150, and the first light beam L1 passes through the first diffusion element 162 and then is transmitted to the first imaging plane 152. The second diffusion element 164 is disposed on the second imaging plane 154 of the display panel 150 corresponding to the second imaging plane 154 of the display panel 150, and the second light beam L2 passes through the second diffusion element 164 and then is transmitted to the second imaging plane 154. By means of the first diffusion element 162 and the second diffusion element 164, uniformity and quality of the first light beam L1 passing through the first diffusion element 162 and the second light beam L2 passing through the second diffusion element 164 can be respectively improved. According to some embodiments, the first diffusion element 162 and the second diffusion element 164 have the same or different haze to generate the same or different diffusion capability according to actual requirements. In addition, in other embodiments, the first diffusion element 162 may be disposed between the first light source 112 and the first imaging plane 152 of the display panel 150, and the second diffusion element 164 may be disposed between the second light source 132 and the second imaging plane 154 of the display panel 150.

The image generating unit 100 shown in fig. 1 can generate two different image beams simultaneously with a single display panel 150 having two image planes by two illumination systems, and can effectively reduce the size and cost of the image generating unit. By disposing the reflector 126, the transmission paths of the first light beam L1 and the second light beam L2 do not intersect, so as to avoid the interference between the first light beam L1 and the second light beam L2. In some embodiments, the number of the illumination systems may be greater than two, and the number of the imaging planes may also be greater than two, so as to generate more virtual images.

Fig. 2 is a schematic diagram of a head-up display device according to an embodiment of the invention. For simplicity, the first and second image beams I1 and I2 only show the traveling direction along the optical axis.

As shown in fig. 2, the head-up display device 200 includes an image generating unit 100, an image transferring module 210 and a target device 220. The head-up display device 200 is used for projecting the first image beam I1 and the second image beam I2 emitted by the image generating unit 100 onto the target device 220. The first image beam I1 and the second image beam I2 are reflected to the eye E of the viewer by the target device 220, so that the viewer views the first virtual image VM1 and the second virtual image VM2 with different imaging distances and different image information in front of the target device 220.

The image transmission module 210 of the head-up display device 200 is configured to transmit the first image beam I1 and the second image beam I2 from the image generating unit 100 to the target device 220 to form a first virtual image VM1 and a second virtual image VM2, respectively.

As shown in fig. 2, the first image beam I1 and the second image beam I2 from the image generating unit 100 leave the display panel 150 of the image generating unit 100 at different first light-exiting angles θ 1o and second light-exiting angles θ 2o, and are incident on the image transmission module 210. As shown in fig. 2, the image transferring module 210 includes an imaging lens assembly 212, an imaging lens assembly 214 and a curved mirror 216, wherein the imaging lens assembly 212 and the imaging lens assembly 214 are respectively disposed on the transferring paths of the first image beam I1 and the second image beam I2. The number and position of the lenses of the image transmission module 210 can be adjusted according to the requirement, but the invention is not limited thereto.

As shown in fig. 2, the imaging mirror group 212 has a mirror, and the imaging mirror group 214 has a mirror, for example, and the first image beam I1 leaves the image generating unit 100 and is reflected by the mirror (the imaging mirror group 212) to enter the curved mirror 216. The second image beam I2 leaves the image generating unit 100, and then is reflected by the mirror (the imaging mirror group 214) and enters the curved mirror 216. Since the head-up display device 200 is configured with only one display panel 150, the first light beam L1 and the second light beam L2 are incident on the corresponding image planes 152 and 154 at the first incident angle θ 1i and the second incident angle θ 2i, respectively, relative to the normal N of the display panel 150. Furthermore, the first image beam I1 and the second image beam I2 respectively exit at a first light-exiting angle θ 1o and a second light-exiting angle θ 2o relative to the normal N of the display panel 150, and by means of the above-mentioned angle design, the first image beam I1 and the second image beam I2 exiting from the same display panel 150 can be respectively transmitted to the corresponding

imaging lens group

212 and 214.

According to some embodiments, the curved mirror 216 may be a free-form mirror (free-form mirror), but is not limited thereto. The curved mirror 216 receives the first image beam I1 from the imaging lens assembly 212 and the second image beam I2 from the imaging lens assembly 214. The first image beam I1 and the second image beam I2 are respectively transmitted to the target device 220 by the curved mirror 216 to form a first virtual image VM1 and a second virtual image VM2. Since the transmission distances of the first image beam I1 and the second image beam I2 emitted from the display panel 150 in the image transmission module 210 are different, the first virtual image VM1 and the second virtual image VM2 have different imaging distances with respect to the target device 220. To describe in more detail, through the image transmission module 210, the optical path length of the first image beam I1 from the image generation unit 100 to the position of the first virtual image VM1 formed by the first image beam I1 is greater than the optical path length of the second image beam I2 from the image generation unit 100 to the position of the second virtual image VM2 formed by the second image beam I2. In other embodiments, the imaging lens assembly 212 has a plurality of mirrors, the imaging lens assembly 214 has a plurality of mirrors, and the number of mirrors of the imaging lens assembly 212 and the imaging lens assembly 214 can be different, as long as the transmission distance of the first image beam I1 and the second image beam I2 in the image transmission module 210 is different, the number of mirrors is not limited in the present invention.

Fig. 3 is a schematic diagram of a head-up display device according to another embodiment of the invention. For simplicity, the first image beam I1 and the second image beam I2 only show the traveling direction along the optical axis. And the heads-up display device 300 of fig. 3 is similar to the heads-up display device 200 of fig. 2, with the main differences as follows. In the present embodiment, the head-up display device 300 further includes an optical element 230 disposed between the image generating unit 100 and the imaging lens assembly 212 and the imaging lens assembly 214.

When the optical paths of the first image beam I1 and the second image beam I2 interfere with each other in the optical path of the head-up display device, the user's eye E can see the stray light. Meanwhile, it is also possible to see a picture of a part of the second virtual image VM2 in the first virtual image VM1 or a picture of a part of the first virtual image VM1 in the second virtual image VM2. To avoid the first image beam I1 and the second image beam I2 interfering with each other on the imaging system of the head-up display device 200, the image generating unit 100 uses the mirror 126 to block the optical paths of the first beam L1 generating the first image beam I1 and the second beam L2 generating the second image beam I2. Due to the structural design of the head-up display device, the light-emitting angles at which the first image beam I1 and the second image beam I2 leave the image generating unit 100 may cause the first image beam I1 and the second image beam I2 to interfere with each other. Therefore, the optical element 230 of the head-up display device 300 is configured to separate the first image beam I1 and the second image beam I2, so that the first image beam I1 does not enter the optical lens assembly 214, and the second image beam I2 does not enter the optical lens assembly 212, so as to ensure that no parasitic light interfering with each other appears in the first virtual image VM1 and the second virtual image VM2, thereby increasing the imaging quality.

According to some embodiments, the material of the optical element 230 is a material having light absorbing properties. The optical element 230 can change its position or shape with the change of the design of the imaging system, so as to achieve the purpose of separating the first image beam I1 and the second image beam I2. The present invention does not impose limitations on the location or shape of optical element 230.

According to other embodiments, the optical element 230 may also be a material having polarized light properties, such as a polarizer. As long as the angle between the first image beam I1 or the second image beam I2 penetrating through the optical element 230 and the polarization direction of the optical element 230 is 90 degrees, the effect of shielding stray light of the first image beam I1 and the second image beam I2 can also be achieved. In the present embodiment, the optical element 230 and the reflector 126 are respectively disposed on two opposite sides of the display panel 150, and may be disposed adjacent to the display panel 150. In the embodiment of fig. 3, the mirror 126 is connected to the display panel 150 and located between two image planes, and the optical element 230 is disposed adjacent to the display panel 150, as long as the design can avoid the interference between two light beams or two image light beams, which is limited by the present invention.

In summary, the image generating unit of the present invention can provide the illumination beams to two image planes of one display panel simultaneously by two sets of illumination systems. Therefore, the size of the image generating unit can be effectively reduced, the cost can be reduced, and the two virtual images displayed by the head-up display device have better imaging quality.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, which is defined by the claims and the description of the invention, and all simple equivalent changes and modifications made therein are also within the scope of the invention. It is not necessary for any embodiment or claim of the invention to address or achieve all of the objects, advantages or features of the invention disclosed herein. In addition, the abstract and the title of the invention are provided to facilitate the search of patent documents and should not be construed as limiting the scope of the invention. Furthermore, the terms "first", "second", and the like in the description or the claims are used only for naming elements (elements) or distinguishing different embodiments or ranges, and are not used for limiting the upper limit or the lower limit on the number of elements.

Description of the reference numerals

100 image generating unit

110 first illumination system

112 first light source

114. 134 collimating lens

120. 140 optical transmission component

122. 124, 142, 146 lenses

126. 144 reflector

130 second lighting system

132 second light source

150 display panel

152 first imaging plane

154 second image plane

160 diffusion element

162 first diffusion element

164 second diffusion element

200. 300 head-up display device

210 image transfer module

212 imaging lens group

214 set of sampling lens

216 curved mirror

220 target element

230 optical element

E eye

I1 first image beam

I2 second image Beam

L1 first light beam

L2 second light beam

Normal of N

VM1 first virtual image

VM2 second virtual image

θ 1i first incident angle

Theta 1o first angle of emergence

Theta 2i second incident angle

And theta 2o is the second light-emitting angle.

Claims

1. An image generation unit, characterized by comprising: a display panel, a first illumination system and a second illumination system, wherein

The display panel is provided with a first imaging surface and a second imaging surface which are arranged adjacently and positioned on the same plane;

the first illumination system is used for providing a first light beam, the first light beam is incident on the first imaging surface of the display panel at a first incidence angle, and the first imaging surface converts the first light beam into a first image light beam; and

the second illumination system is used for providing a second light beam, the second light beam is incident on the second imaging plane of the display panel at a second incidence angle, the second imaging plane converts the second light beam into a second image light beam,

the transmission path of the first light beam incident on the first imaging plane and the transmission path of the second light beam incident on the second imaging plane do not intersect with each other, and the first image light beam and the second image light beam leave the display panel at different light-emitting angles.

2. The image generation unit according to claim 1, wherein the first incident angle and the second incident angle each have a different angle.

3. The image generation unit of claim 1, wherein the first illumination system comprises: the light source comprises a first light source, a collimating lens and a light transmission component, wherein the first light beam is emitted from the first light source and is incident to the first imaging surface through the collimating lens and the light transmission component in sequence.

4. The image generation unit of claim 3, wherein the light transmission component of the first illumination system comprises a mirror disposed between the first illumination system and the second illumination system, such that a transmission path of the first light beam incident on the first imaging plane and a transmission path of the second light beam incident on the second imaging plane do not intersect with each other.

5. The image generating unit of claim 4, wherein the first light beam emitted by the first light source passes through the collimating lens, the light transmission component and the mirror in sequence and is reflected by the mirror to the first imaging plane.

6. The image generation unit of claim 3, wherein the first light source is one or more light emitting elements, the light emitting elements being light emitting diodes or laser diodes.

7. The image generation unit of claim 1, wherein the second illumination system comprises: the second light source, the collimating lens and the light transfer component are arranged, wherein the second light beam is emitted from the second light source and is incident on the second imaging surface through the collimating lens and the light transfer component in sequence.

8. The image generation unit of claim 7, wherein the second light source is one or more light emitting elements, the light emitting elements being light emitting diodes or laser diodes.

9. The image generation unit according to claim 1, wherein the display panel is a liquid crystal display panel.

10. The image generation unit according to claim 1, further comprising:

and a diffusion element disposed on the display panel and located on the transmission path through which the first light beam enters the first imaging plane and the transmission path through which the second light beam enters the second imaging plane.

11. The image generation unit of claim 10, wherein the diffuser element is disposed on a light incident surface of the display panel.

12. The image generation unit according to claim 1, further comprising:

a first diffusion element disposed on the first imaging plane of the display panel;

and a second diffusion element disposed on the second imaging plane of the display panel, wherein the first diffusion element and the second diffusion element have different diffusion capabilities, the first light beam passes through the first diffusion element and then is transmitted to the first imaging plane, and the second light beam passes through the second diffusion element and then is transmitted to the second imaging plane.

13. A head-up display device for projecting a first image beam and a second image beam onto a target device, comprising:

an image generation unit comprising: a display panel, a first illumination system, and a second illumination system; wherein the content of the first and second substances,

the display panel is provided with a first imaging plane and a second imaging plane which are arranged adjacently and positioned on the same plane;

the first illumination system is used for providing a first light beam, the first light beam is incident on the first imaging surface of the display panel at a first incidence angle, and the first imaging surface converts the first light beam into the first image light beam; and

the second illumination system is used for providing a second light beam, the second light beam is incident on the second imaging surface of the display panel at a second incidence angle, and the second imaging surface converts the second light beam into the second image light beam;

the transmission path of the first light beam incident on the first imaging plane does not intersect with the transmission path of the second light beam incident on the second imaging plane, and the first image light beam and the second image light beam leave the display panel at different light-emitting angles;

the image transmission module is used for transmitting the first image light beam and the second image light beam from the image generation unit to the target element so as to form a first virtual image and a second virtual image respectively.

14. The heads-up display device of claim 13, wherein the first virtual image and the second virtual image have different image information and different imaging distances with respect to the target element.

15. The head-up display device of claim 13, wherein the first image beam and the second image beam have different transmission distances in the image transmission module, and the image transmission module comprises a curved mirror.

16. The heads-up display device of claim 13 wherein the first illumination system comprises: the light source comprises a first light source, a collimating lens and a light transmission component, wherein the first light beam is emitted from the first light source and is incident to the first imaging surface through the collimating lens and the light transmission component in sequence.

17. The head-up display device according to claim 16, wherein the light transmission assembly of the first illumination system comprises a mirror disposed between the first illumination system and the second illumination system such that a transmission path of the first light beam incident on the first imaging plane and a transmission path of the second light beam incident on the second imaging plane do not intersect with each other.

18. The head-up display device of claim 17, wherein the first light beam emitted by the first light source passes through the collimating lens, the light transmitting assembly and the mirror in sequence and is reflected by the mirror to the first imaging plane.

19. The heads-up display device of claim 13 wherein the second illumination system comprises: the second light source emits the second light beam, and the second light beam is incident on the second imaging surface through the collimating lens and the light transfer assembly.

20. The heads-up display device of claim 13 wherein the image generation unit further comprises:

a first diffusion element disposed on the first imaging plane of the display panel; and