Image light source combined structure and panoramic head-up display device

Abstract

The invention relates to an image light source combination structure and a panoramic head-up display device. The image light source combination structure comprises a plurality of image light sources and light mixing elements located on the light emitting sides of the image light sources. The light mixing element comprises a plurality of mirror surfaces, the plurality of image light sources can generate image light which carries different plane images and is in one-to-one correspondence with the plurality of mirror surfaces, the image light sources emit the image light to the corresponding mirror surfaces, and the light mixing element mixes the different image light to form 3D image mixed light. The invention provides an image light source combined structure and a panoramic head-up display device, which improve the projection imaging quality and reduce the cost of the panoramic head-up display device based on a panoramic 3D technology of multi-image surface combination.

Description

Technical Field

[0001] The present invention relates to the technical field of head-up display, and in particular to an image light source combination structure and a panoramic head-up display device. Background Art

[0002] With the gradual development of automobile intelligence, head-up displays are increasingly widely used in automobiles. Head-up displays (HUD) project important driving information such as speed and navigation onto the windshield or imaging window in front of the driver through a reflective optical system, so that the driver can see virtual images of important driving information such as speed and navigation without lowering or turning his head. The images formed by existing HUDs are generally two-dimensional plane images, but the actual road conditions are three-dimensional, and information such as warnings and navigation cannot be displayed in line with the actual road conditions. In the prior art, a 3D image is formed by applying three-dimensional stereoscopic display (i.e., spectroscopic stereoscopic display) technology to HUD, but spectroscopic stereoscopic display mainly includes light barrier type and micro-column lens type. However, these two spectroscopic stereoscopic display technologies will lose the resolution of the image, that is, affect the image quality. At the same time, the HUD using this technology has a high cost, and the HUD structure is relatively complex and precise, and the assembly difficulty is high, and it does not take advantage of large-scale mass production. Summary of the invention

[0003] In view of the above-mentioned problems, the purpose of the present invention is to provide an image light source combination structure and a panoramic head-up display device, based on the panoramic 3D technology of multi-image plane combination, to improve the projection imaging quality and reduce the cost of the panoramic head-up display device.

[0004] The purpose of the present invention is achieved through the following technical solutions: An image light source combination structure includes a plurality of image light sources and a light mixing element located on the light emitting side of the image light sources; the light mixing element includes a plurality of mirrors, and the plurality of image light sources can generate image light rays carrying different plane images and corresponding one-to-one with the plurality of mirrors. The image light sources emit the image light rays to the corresponding mirrors, and the light mixing element mixes the different image light rays to form 3D image mixed light rays.

[0005] The image light source combination structure designed in this scheme is a panoramic 3D technology based on multi-image plane combination. Multiple image light sources can be used to emit image light carrying different plane images, or one image light source can emit multiple beams of image light carrying different plane images. By splicing and combining image light of different planes, a combined light carrying 3D image is formed; in addition, a light mixing element is set, and the light mixing element evenly mixes the 3D image combination light to form a 3D image mixed light. After projection, a panoramic 3D image is formed, which can eliminate the problem of non-overlapping seams of 3D image splicing, ensure the continuity of multiple plane images after splicing and combination, and improve the imaging quality. In addition, by designing the position angle of the light mixing element, the angle of the light emission after mixing is set within a preset range, thereby ensuring the visibility of the projected image within a preset viewing angle range. The above image light source combination structure provides a panoramic 3D technology with a simple structure and low cost. The HUD using this technology can effectively reduce the cost and reduce the difficulty of HUD assembly, and is suitable for large-scale mass production.

[0006] Furthermore, there is one image light source, which can generate a plurality of image light rays at the same time. A light guide component corresponding to the image light rays is provided on the light output side of the image light source, and the image light rays are incident on the corresponding mirror surface through the light guide component.

[0007] The image light source of this solution adopts DLP projection (Digital Light Processing) or LCOS projection (Liquid Crystal on Silicon). The image light source emits several beams of image light carrying images of different planes, and reflects and deflects the image light through light guide components corresponding to the image light one by one, so that the image light is projected into the corresponding mirror surface while ensuring that the optical path of all image light remains unchanged.

[0008] Furthermore, the mixing light element includes a first mirror and a second mirror, the first mirror and the second mirror are parallel to each other, two groups of light guide components are provided on the light output side of the image light source, and the image light source simultaneously generates two beams of the image light, and the two beams of the image light are respectively incident on the first mirror and the second mirror through the corresponding light guide components.

[0009] In this solution, the light mixing element is a flat transparent optical element, which includes a first mirror and a second mirror, both of which are coated with optical films, and can divide the incident light beam into two parts according to certain requirements and methods, preferably a flat beam splitter. The image light source emits two image light beams carrying different plane images, and two groups of light guide components are provided on the light output side of the image light source. The two image light beams are respectively incident on the first mirror and the second mirror through the corresponding light guide components, and are mixed by the light mixing element to form a 3D image mixed light beam.

[0010] Furthermore, the mixing light element includes a third mirror, a fourth mirror, a fifth mirror and a light-emitting surface, the fourth mirror and the fifth mirror are parallel to each other, the third mirror and the light-emitting surface are located between the fourth mirror and the fifth mirror, and are vertically connected to the fourth mirror and the fifth mirror, and three groups of light guide components are provided on the light-emitting side of the image light source, and the image light source simultaneously generates three beams of the image light, and the three beams of the image light are respectively incident on the third mirror, the fourth mirror and the fifth mirror through the corresponding light guide components.

[0011] In the present scheme, the light mixing element is a prismatic transparent optical element, and the optical element includes a third mirror surface, a fourth mirror surface, a fifth mirror surface and a light emitting surface, wherein the third mirror surface, the fourth mirror surface and the fifth mirror surface are all incident surfaces, and an optical film is arranged on the angle bisector surface of the prismatic transparent optical element, which can divide the incident light beam into two parts according to certain requirements and methods, and a dichroic prism is preferred. The dichroic prism can be a prism made of birefringent crystal material, which is formed by gluing two right-angle prisms, and the largest sides of the two right-angle prisms are coated with a dichroic film, thereby forming a dichroic bevel inside the dichroic prism. When light is irradiated to the dichroic bevel, part of the light is transmitted, and part of the light is reflected, forming two beams of light with the same optical path and emitting from different surfaces. By irradiating the dichroic bevel from different mirror surfaces with different beams of light, the refracted light can be mixed and emitted from a certain mirror surface, thereby achieving the purpose of light mixing. The image light source emits three beams of image light carrying images of different planes. Three groups of light guide components are provided on the light output side of the image light source. The three beams of image light are respectively emitted into the third mirror, the fourth mirror and the fifth mirror through the corresponding light guide components. After being mixed by the light mixing element, 3D image mixed light is formed and emitted from the light output surface.

[0012] Furthermore, the image light sources are arranged in one-to-one correspondence with the mirrors, and each of the image light sources generates independent image light, and the image light is respectively incident on the corresponding mirrors. In this solution, the image light source adopts TFT-LCD projection (Thin Film Transistor Liquid Crystal Display), the liquid crystal display panel of the graphic light source is set in one-to-one correspondence with the mirror surface, and the position angle between the liquid crystal display panel and the first mirror surface and the second mirror surface is designed according to actual conditions. In addition, the angle between the image light emitted by the two liquid crystal display panels and their light emitting surfaces is set between 40°-140°.

[0013] Furthermore, the light mixing element includes a first mirror surface and a second mirror surface, the first mirror surface and the second mirror surface are parallel to each other, and two image light sources are provided, and the two image light sources are respectively provided corresponding to the first mirror surface and the second mirror surface.

[0014] In this solution, the light mixing element is a flat transparent optical element, which includes a first mirror and a second mirror, both of which are coated with optical films, and can split the incident light beam into two parts according to certain requirements and methods, preferably a flat beam splitter. Two image light sources emit two image light beams carrying different plane images, which are respectively incident on the first mirror and the second mirror, and are mixed by the light mixing element to form a 3D image mixed light beam.

[0015] Furthermore, the light mixing element includes a third mirror, a fourth mirror, a fifth mirror and a light-emitting surface, the fourth mirror and the fifth mirror are parallel to each other, the third mirror and the light-emitting surface are located between the fourth mirror and the fifth mirror, and are vertically connected to the fourth mirror and the fifth mirror, and three image light sources are provided, and the three image light sources are respectively provided corresponding to the third mirror, the fourth mirror and the fifth mirror.

[0016] In this solution, the light mixing element is a prismatic transparent optical element, and the optical element includes a third mirror surface, a fourth mirror surface, a fifth mirror surface and a light exiting surface, wherein the third mirror surface, the fourth mirror surface and the fifth mirror surface are all incident surfaces, and an optical film is arranged on the angle bisector surface of the prismatic transparent optical element, which can divide the incident light beam into two parts according to certain requirements and methods, and a dichroic prism is preferably used. The three image light sources are placed according to the set positions to generate three beams of image light in different planes, and the three beams of image light are respectively incident on the third mirror surface, the fourth mirror surface and the fifth mirror surface through the corresponding light guide components, and are mixed by the light mixing element to form a 3D image mixed light emitted from the light exiting surface.

[0017] Furthermore, the light guide assembly includes a reflector group and a diffusion screen.

[0018] The image light is reflected and turned by the reflector group, so that the image light is irradiated onto the corresponding diffusion screen respectively, forming image plane light of different plane images, and then entering the light mixing element. The reflectors in the reflector group are plane reflectors. The number and setting angle of the plane reflectors are set according to the actual situation to ensure that the optical path of the light of the unified light source is the same.

[0019] A panoramic head-up display device is also designed, including the above-mentioned image light source combination structure, and also including a primary reflector, a secondary reflector, and a windshield. The image light source combination structure emits a mixed light carrying a 3D image that enters the primary reflector and the secondary reflector in sequence, and then enters the human eye after being reflected by the windshield, and finally forms a 3D image in front of the windshield.

[0020] The panoramic head-up display device designed in this scheme uses the above-mentioned image light source combination structure to form a 3D image mixed light, which passes through the primary reflector and the secondary reflector to change the direction of the 3D image mixed light, and finally the 3D image mixed light is reflected by the windshield to form a 3D image. The panoramic 3D technology based on multi-image plane combination can better solve the pain point that virtual information cannot be seamlessly integrated with real environment information in traditional display technology, and can provide users with a more immersive, three-dimensional and intuitive visual experience; at the same time, it presents real 3D image information, avoiding the driver's 3D dizziness caused by the information difference between the left and right eyes, and improving driving safety.

[0021] Furthermore, it also includes an adjusting unit, which is used to drive the secondary reflector to rotate.

[0022] In this solution, an adjustment unit is also designed to drive the secondary reflector to rotate, so as to adjust the imaging position of the 3D image to meet the viewing needs of different drivers and enhance the user experience of the panoramic head-up display device.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the image light source combination structure designed in this scheme is a panoramic 3D technology based on multi-image plane combination, using multiple image light sources to emit image light carrying different plane images, or one image light source can emit multiple beams of image light carrying different plane images, and by splicing and combining the image light of different planes, a combined light carrying a 3D image is formed; in addition, a light mixing element is set, and the light mixing element evenly mixes the 3D image combination light to form a 3D image mixed light, and a panoramic 3D image is formed after projection, which can eliminate the problem of non-overlapping seams of 3D image splicing, ensure the continuity of the images of multiple planes after splicing and combination, and improve the imaging quality. In addition, by designing the position angle of the light mixing element, the angle of the light emission after mixing is set within a preset range, thereby ensuring the visibility of the projected image within a preset viewing angle range. The above image light source combination structure provides a panoramic 3D technology with a simple structure and low cost. The HUD using this technology can effectively reduce the cost and reduce the difficulty of assembling the HUD, and is suitable for large-scale mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The structure of the image light source combination structure of the embodiment of the present invention is shown in FIG. Figure 1 .

[0025] Figure 2 The structure of the image light source combination structure of the embodiment of the present invention is shown in FIG. Figure 2 .

[0026] Figure 3 The structure of the image light source combination structure of the embodiment of the present invention is shown in FIG. Figure 3.

[0027] Figure 4 The structure of the image light source combination structure of the embodiment of the present invention is shown in FIG. Figure 4 .

[0028] Figure 5 The structure of the image light source combination structure of the embodiment of the present invention is shown in FIG. Figure 5 .

[0029] Figure 6 FIG. 4 is a schematic diagram of the optical path of a beam splitter prism according to an embodiment of the present invention.

[0030] Figure 7 The structure of the image light source combination structure of the embodiment of the present invention is shown in FIG. Figure 6 .

[0031] Figure 8 The structure of the image light source combination structure of the embodiment of the present invention is shown in FIG. Figure 7 .

[0032] Fig. 9 Schematic diagram of the structure of a panoramic head-up display device according to an embodiment of the present invention.

[0033] Fig.10 This is Example 1 of forming a 3D image by projecting a panoramic head-up display device according to an embodiment of the present invention.

[0034] Fig.11 This is Example 2 of forming a 3D image by projecting the panoramic head-up display device according to an embodiment of the present invention.

[0035] Fig.12 This is Example 3 of forming a 3D image by projecting the panoramic head-up display device according to an embodiment of the present invention.

[0036] Fig.13 This is Example 4 of projecting a 3D image using the panoramic head-up display device according to an embodiment of the present invention.

[0037] Description of Figure Numbers: 1. Image light source combination structure; 11. Image light source; 12. Light mixing element; 13. Diffuser screen; 14. Reflector group; 2. Primary reflector; 3. Secondary reflector; 4. Secondary reflector; 5. Adjustment unit; 12a. First mirror; 12b. Second mirror; 12c. Third mirror; 12d. Fourth mirror; 12e. Fifth mirror, 12f. Light exit surface. DETAILED DESCRIPTION

[0038] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0039] An embodiment of the present application provides an image light source combination structure 1, comprising a plurality of image light sources 11, and a light mixing element 12 located on the light emitting side of the image light source 11; the light mixing element 12 comprises a plurality of mirrors, and the plurality of image light sources 11 are used to generate image light L11 carrying different plane images and corresponding one-to-one to the plurality of mirrors, and the image light source 11 emits the image light L11 to the corresponding mirrors; the light mixing element 12 is used to mix different image lights L11 to form a 3D image mixed light 3D-L.

[0040] The image light source combination structure 1 of the embodiment of the present application is a panoramic 3D technology based on multi-image plane combination, which utilizes multiple image light sources 11 to emit image light L11 carrying images of different planes, or one image light source 11 can emit multiple beams of image light L11 carrying images of different planes, and the image light L11 of different planes are spliced ​​and combined to form a combined light carrying a 3D image; in addition, a mixing element 12 is provided, and the mixing element 12 evenly mixes the 3D image combined light to form a 3D image mixed light 3D-L, which forms a panoramic 3D image 3D-V after projection, which can eliminate the problem of non-overlapping seams of the spliced ​​3D image 3D-V, ensure the continuity of the images of multiple planes after splicing and combination, and improve the imaging quality. In addition, the position angle of the mixing element 12 is designed so that the emission angle of the mixed light is set within a preset range, thereby ensuring the visibility of the projected image within a preset viewing angle range. The above image light source combination structure 1 provides a panoramic 3D technology with a simple structure and low cost. The HUD using this technology can effectively reduce the cost and the difficulty of assembling the HUD, and is suitable for large-scale mass production.

[0041] Embodiment 1: like Figures 1 to 5As shown, a non-limiting embodiment of the present invention provides a structure for combining image light L11 in two planes. The image light source 11 is placed according to a set position to generate two beams of first image light L11a and second image light L11b in different planes. The first image light L11a and the second image light L11b can be preliminarily spliced ​​and combined into a 3D image combination light. The light mixing element 12 is a flat transparent optical element, including a first mirror surface 12a and a second mirror surface 12b. The first mirror surface 12a and the second mirror surface 12b are parallel to each other. The first mirror surface 12a and the second mirror surface 12b are both coated with an optical film, and the incident light beam can be divided into two parts according to certain requirements and methods. The light mixing element 12 is preferably a flat beam splitter. The flat beam splitter can divide a beam of light into two beams of light. When a beam of light is irradiated to the surface of the flat beam splitter, a part of the light is transmitted through, and the other part of the light is reflected, thereby achieving the separation of light. The first image light L11a is incident on the flat-plate beam splitter from the first mirror 12a, and part of it is reflected by the first mirror 12a; the second image light L11b is incident on the flat-plate beam splitter from the second mirror 12b, and part of it is emitted from the first mirror 12a through the flat-plate beam splitter. Thus, the first image light L11a and the second image light L11b are mixed by the flat-plate beam splitter to form a 3D image mixed light 3D-L, which is emitted from the first mirror 12a.

[0042] like Figures 1 to 3 As shown, in a structural form of this embodiment, two image light sources 11 are provided, each image light source 11 generates independent image light, namely, a first image light source 11a and a second image light source 11b, and the first image light source 11a and the second image light source 11b are respectively provided corresponding to the first mirror surface 12a and the second mirror surface 12b. Among them, the flat beam splitter can be provided separately from the first image light source 11a and the second image light source 11b, such as Figure 2 As shown; the flat beam splitter can also be glued to the light-emitting surface of one of the image light sources 11. In this embodiment, the first image light source 11a and the second image light source 11b adopt TFT-LCD projection (Thin Film Transistor Liquid Crystal Display), and the two liquid crystal display panels correspond to the first mirror surface 12a and the second mirror surface 12b respectively. The position angle between the liquid crystal display panel and the first mirror surface 12a and the second mirror surface 12b is designed according to the actual situation. In addition, the angle between the image light L11 emitted by the two liquid crystal display panels and their light-emitting surfaces is set between 40°-140°. In addition, as Figure 3 As shown, if an optical film layer can be coated on the light emitting surface of the image light source, the light emitting surface of the image light source plays the role of reflecting and mixing light, and the light mixing element can be eliminated.

[0043] like Figure 4As shown, in another structural form of this embodiment, one image light source 11 is provided, and the image light source 11 can generate two beams of first image light L11a and second image light L11b carrying different plane images, and the image light source combination structure 1 also includes two groups of light guide components, and the two groups of light guide components are respectively arranged at different positions on the light exit side of the image light source, and the two groups of light guide components include two diffusion screens 13, respectively a first diffusion screen 13a and a second diffusion screen 13b, and two reflector groups 14 corresponding to the diffusion screens 13, respectively a first reflector group 14a and a second reflector group 14b; the first diffusion screen 13a and the first reflector group 14a constitute a group of light guide components. The optical component, the second diffuser screen 13b and the second reflector group 14b constitute a group of light guide components, the first diffuser screen 13a and the second diffuser screen 13b are respectively arranged corresponding to the first mirror surface 12a and the second mirror surface 12b, the first reflector group 14a and the second reflector group 14b are located at different positions on the light-emitting side of the image light source 11, the first image light L11a and the second image light L11b are respectively reflected by the first reflector group 14a and the second reflector group 14b and then folded to the first diffuser screen 13a and the second diffuser screen 13b, and the light mixing element mixes the first image light L11a and the second image light L11b after being homogenized and diffused by the diffuser screen 13. In addition, the reflectors in the first reflector group 14a and the second reflector group 14b are plane reflectors, and the number and setting angles of the plane reflectors are set according to actual conditions. The distance of the first image light L11a reflected by the first reflector group 14a to the first diffuser screen 13a is the first optical path, and the distance of the second image light L11b reflected by the second reflector group 14b to the second diffuser screen 13b is the second optical path. The number and setting angle of the plane reflectors in the first reflector group 14a and the second reflector group 14b need to ensure that the first optical path and the second optical path are the same. In this embodiment, the image light source 11 adopts DLP projection (Digital Light Processing) or LCOS projection (Liquid Crystal on Silicon), and the image light source 11 emits two beams of image light L11 carrying different plane images. The two groups of reflectors 14 reflect and turn the two beams of image light L11 so that the two beams of image light L11 are respectively irradiated onto the two diffusers 13 to form image plane light of different plane images. The two beams of image plane light are respectively incident on the flat beam splitter from the first mirror 12a and the second mirror 12b, and are mixed by the flat beam splitter to form a 3D image mixed light 3D-L and emitted.

[0044] like Figure 5As shown, in another structural form of the present embodiment, one image light source 11 is provided, and the image light source 11 can generate two beams of first image light L11a and second image light L11b carrying different plane images. The light mixing element 12, i.e., the flat-plate beam splitter, is arranged at a certain angle to the image light source 11. The first image light L11a is incident on the flat-plate beam splitter from the first mirror surface 12a, and part of the light is reflected by the first mirror surface 12a; the second image light L11b is incident on the flat-plate beam splitter from the second mirror surface 12b, and part of the light is emitted from the first mirror surface 12a through the flat-plate beam splitter, thereby the first image light L11a and the second image light L11b are mixed by the flat-plate beam splitter to form a 3D image mixed light 3D-L, which is emitted from the first mirror surface 12a.

[0045] Embodiment 2: like Figures 6 to 8 As shown, another non-limiting embodiment of the present invention, in this embodiment, the light mixing element is a prismatic transparent optical element, the optical element includes a third mirror surface 12c, a fourth mirror surface 12d, a fifth mirror surface 12e and a light emitting surface 12f, the fourth mirror surface 12d and the fifth mirror surface 12e are parallel to each other, the third mirror surface 12c and the light emitting surface 12f are located between the fourth mirror surface 12d and the fifth mirror surface 12e, and are vertically connected to the fourth mirror surface 12d and the fifth mirror surface 12e, wherein the third mirror surface 12c, the fourth mirror surface 12d and the fifth mirror surface 12e are all incident surfaces, The angular bisecting surface of the shaped transparent optical element is provided with an optical film, which can divide the incident light beam into two parts according to certain requirements and methods. The light mixing element 12 is preferably a beam splitter prism. The beam splitter prism can be a prism made of a birefringent crystal material, which is formed by gluing two right-angle prisms. The largest side surfaces of the two right-angle prisms are coated with a beam splitter film, thereby forming a beam splitter bevel inside the beam splitter prism. When light is irradiated to the beam splitter bevel, part of the light is transmitted and part of the light is reflected, forming two beams of light with the same optical path that are emitted from different surfaces. The optical path schematic diagram of the beam splitter prism is shown in FIG. Figure 6As shown. Thus, by using different beams of light to illuminate the splitting inclined surface from different mirrors, the separated light can be mixed and emitted from the light emitting surface, thereby achieving the purpose of light mixing. A plurality of image light sources can generate three beams of image light L11, namely the third image light L11c, the fourth image light L11d, and the fifth image light L11e. The third image light L11c, the fourth image light L11d, and the fifth image light L11e are illuminated to the third mirror 12c, the fourth mirror 12d, and the fifth mirror 12e, respectively. The present embodiment provides a structure 1 for combining image light in three planes. The image light source 11 is placed according to a set position to generate three beams of image light L11 in different planes. The three beams of image light L11 in different planes can be preliminarily spliced ​​and combined into a 3D image combination light. The light mixing element is a beam splitter prism. The inner inclined surface of the beam splitter prism is coated with a beam splitter coating. The three beams of image light L11 in different planes are respectively incident on the beam splitter prism from the third mirror 12c, the fourth mirror 12d and the fifth mirror 12e. After being mixed by the beam splitter prism, a 3D image mixed light 3D-L is formed and emitted from the light exit surface 12f.

[0046] like Figure 7 As shown, in a structural form of this embodiment, three image light sources 11 are provided, namely, a third image light source 11c, a fourth image light source 11d, and a fifth image light source 11e. The third image light source 11c, the fourth image light source 11d, and the fifth image light source 11e are provided corresponding to the third mirror surface 12c, the fourth mirror surface 12d, and the fifth mirror surface 12e, respectively. The fourth mirror surface 12d is coated with an optical film, so that light can enter from the front of the fourth mirror surface 12d, and when light enters from the back of the fourth mirror surface 12d, it will be reflected by the optical film. The third image light L11c emitted by the third image light source 11c is incident vertically from the third mirror 12c and passes through the splitting bevel, and part of the light is transmitted from the light exiting surface 12f; the fourth image light L11d emitted by the fourth image light source 11d is incident vertically from the fourth mirror 12d and is reflected by the splitting bevel, and part of the light is reflected from the light exiting surface 12f; the fifth image light L11e emitted by the fifth image light source 11e is incident from the fifth mirror 12e with a small angle deviation and passes through the splitting bevel, and part of the light is irradiated to the fourth mirror 12d and reflected to the splitting bevel, and then part of the light is reflected by the splitting bevel and reflected from the light exiting surface 12f. Thus, the third image light L11c, the fourth image light L11d and the fifth image light L11e are combined by the splitting prism to form a 3D image mixed light 3D-L, which is emitted from the light exiting surface 12f. In this solution, the image light source adopts TFT-LCD projection, and the three liquid crystal display panels correspond to the third mirror 12c, the fourth mirror 12d and the fifth mirror 12e respectively. The position angles between the three liquid crystal display panels and the third mirror 12c, the fourth mirror 12d and the fifth mirror 12e are designed according to actual conditions.

[0047] like Figure 8As shown, in another structural form of the present embodiment, one image light source 11 is provided, and the image light source 11 can generate three beams of image light L11 carrying different plane images, which are respectively a third image light L11c, a fourth image light L11d and a fifth image light L11e. The image light source combination structure 1 also includes three groups of light guide components, which are respectively arranged at different positions on the light exit side of the image light source. The three groups of light guide components include three diffusion screens 13, which are respectively a third diffusion screen 13c, a fourth diffusion screen 13d and a fifth diffusion screen 13e, and reflector groups 14 corresponding to the diffusion screens 13 one by one, which are respectively a third reflector group 14c, a fourth reflector group 14d and a fifth reflector group 14e; the third diffusion screen 13c and the third reflector group 14c constitute a group of light guide components, the fourth diffusion screen 13d and the fourth reflector group 14d constitute a group of light guide components, and the fifth diffusion screen 13e and the fifth reflector group 14e constitute a group of light guide components. The third diffusion screen 13c, the fourth diffusion screen 13d and the fifth diffusion screen 13e are respectively arranged corresponding to the third mirror 12c, the fourth mirror 12d and the fifth mirror 12e, the third reflector group 14c, the fourth reflector group 14d and the fifth reflector group 14e are located at different positions on the light-emitting side of the image light source 11, and the third image light L11c, the fourth image light L11d and the fifth image light L11e are respectively reflected by the third reflector group 14c, the fourth reflector group 14d and the fifth reflector group 14e and then deflected to the third diffusion screen 13c, the fourth diffusion screen 13d and the fifth diffusion screen 13e, and the light mixing element mixes the third image light L11c, the fourth image light L11d and the fifth image light L11e after being homogenized and diffused by the diffusion screen 13. In addition, the reflectors in the third reflector group 14c, the fourth reflector group 14d and the fifth reflector group 14e are plane reflectors, and the number and setting angle of the plane reflectors are set according to actual conditions, and it is necessary to ensure that the optical paths of the third image light L11c, the fourth image light L11d and the fifth image light L11e are the same. In this embodiment, the image light source 11 adopts DLP projection (Digital Light Processing) or LCOS projection (Liquid Crystal on Silicon), and the image light source 11 emits three image light beams L11 carrying different plane images, and the three image light beams L11 are reflected and turned by the three groups of reflectors 14, so that the three image light beams L11 are respectively irradiated onto the three diffusion screens 13 to form image plane light beams of different plane images, and the three image plane light beams are respectively incident on the beam splitter prism from the third mirror surface 12c, the fourth mirror surface 12d and the fifth mirror surface 12e, and after being mixed by the beam splitter prism, a 3D image mixed light 3D-L is formed and emitted from the light exit surface 12f.

[0048] Embodiment three: like Fig. 9As shown, the present embodiment provides a panoramic head-up display device, including the above-mentioned image light source combination structure 1, and also including a primary reflector 2, a secondary reflector 3, a windshield 4, and an adjustment unit 5. The 3D image mixed light 3D-L emitted by the image light source combination structure 1 enters the primary reflector 2 and the secondary reflector 3 in sequence, and then enters the human eye after being reflected by the windshield 3, and finally forms a 3D image 3D-V in front of the windshield 3. The panoramic head-up display device of the present embodiment uses the above-mentioned image light source combination structure 1 to form a 3D image mixed light 3D-L, passes through the primary reflector 2 and the secondary reflector 3 to change the direction of the 3D image mixed light 3D-L, and finally reflects the 3D image mixed light 3D-L by the windshield 3 to form a 3D image 3D-V. The panoramic 3D technology based on the combination of multiple image planes can better solve the pain point that virtual information cannot be seamlessly integrated with real environment information in traditional display technology, and can provide users with a more immersive, three-dimensional and intuitive visual experience; at the same time, it presents real 3D image information, which avoids the driver's 3D dizziness caused by the information difference between the left and right eyes, and improves driving safety. The adjustment unit 5 in this embodiment is used to drive the secondary reflector to rotate, and then adjust the imaging position of the 3D image 3D-V to meet the viewing needs of different drivers and improve the user experience of the panoramic head-up display device. The adjustment unit 5 is composed of a rotating control part, which is used to control the secondary reflector to rotate to achieve angle adjustment. The rotating control part can adopt the existing technology and will not be described in detail here.

[0049] In this example, the presentation form of the 3D image 3D-V projected by the panoramic head-up display device is related to the 3D image mixed light 3D-L formed by the image light source combination structure, such as Fig.10 As shown, the panoramic head-up display device projects a 3D image 3D-V which is composed of three different plane images, and the three plane images correspond to the third image light L11c, the fourth image light L11d, and the fifth image light L11e in the second embodiment respectively; Figures 11 to 13 As shown, the panoramic head-up display device projects a 3D image formed by splicing and combining two different plane images, and the two plane images correspond to the first image light L11a and the second image light L11b in the first embodiment respectively.

[0050] Additionally, in other possible embodiments, the panoramic head-up display device may project a 3D image formed by stitching together four, five or six images of different planes, which is not specifically limited herein.

[0051] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An image light source combination structure, characterized in that: It includes a plurality of image light sources and a light mixing element located on the light emitting side of the image light sources; the light mixing element includes a plurality of mirrors, and the plurality of image light sources can generate image light rays carrying different plane images and corresponding one-to-one with the plurality of mirrors. The image light sources emit the image light rays to the corresponding mirrors, and the light mixing element mixes the different image light rays to form 3D image mixed light rays.

2. The image light source combination structure according to claim 1, characterized in that: There is one image light source, and one image light source can generate a plurality of image lights at the same time. A light guide component corresponding to the image lights is provided on the light output side of the image light source, and the image lights are incident on the corresponding mirror surface through the light guide component.

3. The image light source combination structure according to claim 2, characterized in that: The light mixing element includes a first mirror and a second mirror, the first mirror and the second mirror are parallel to each other, two groups of light guide components are provided on the light output side of the image light source, and the image light source simultaneously generates two beams of the image light, and the two beams of the image light are respectively incident on the first mirror and the second mirror through the corresponding light guide components.

4. The image light source combination structure according to claim 2, characterized in that: The light mixing element includes a third mirror, a fourth mirror, a fifth mirror and a light emitting surface, the fourth mirror and the fifth mirror are parallel to each other, the third mirror and the light emitting surface are located between the fourth mirror and the fifth mirror, and are vertically connected to the fourth mirror and the fifth mirror, and three groups of light guide components are provided on the light emitting side of the image light source, the image light source simultaneously generates three beams of the image light, and the three beams of the image light are respectively emitted into the third mirror, the fourth mirror and the fifth mirror through the corresponding light guide components.

5. The image light source combination structure according to claim 1, characterized in that: The image light sources are arranged in one-to-one correspondence with the mirror surfaces, and each of the image light sources generates independent image light, and the image light rays are respectively incident on the corresponding mirror surfaces.

6. The image light source combination structure according to claim 5, characterized in that: The light mixing element comprises a first mirror surface and a second mirror surface, the first mirror surface and the second mirror surface are parallel to each other, two image light sources are provided, and the two image light sources are respectively provided corresponding to the first mirror surface and the second mirror surface.

7. The image light source combination structure according to claim 5, characterized in that: The light mixing element includes a third mirror, a fourth mirror, a fifth mirror and a light emitting surface, the fourth mirror and the fifth mirror are parallel to each other, the third mirror and the light emitting surface are located between the fourth mirror and the fifth mirror, and are vertically connected to the fourth mirror and the fifth mirror, and three image light sources are provided, and the three image light sources are respectively arranged corresponding to the third mirror, the fourth mirror and the fifth mirror.

8. The image light source combination structure according to any one of claims 2 to 4, characterized in that: The light guide assembly includes a reflector group and a diffusion screen.

9. A panoramic head-up display device, characterized in that: The image light source combination structure comprises the image light source combination structure as described in any one of claims 1 to 7, and further comprises a primary reflector, a secondary reflector, and a windshield, wherein the 3D image mixed light emitted by the image light source combination structure enters the primary reflector and the secondary reflector in sequence, and then enters the human eye after being reflected by the windshield, and finally forms a 3D image in front of the windshield.

10. The panoramic head-up display device according to claim 9, characterized in that: It also includes an adjusting unit, which is used to drive the secondary reflector to rotate.

Images