Display device, image source device, traffic device and display method

Abstract

A display device, an image source device, a traffic device, and a display method are provided, in which the display device is configured so that a user can observe a virtual image through an eyebox region of the display device, and the virtual image includes at least a left virtual image portion and / or a right virtual image portion, and the display device can improve the blending effect between the virtual image and environmental objects.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from Chinese Patent Applications Nos. 202210901853.7 and 202221975965.9, filed on July 28, 2022, the entire contents of which are incorporated herein by reference.

[0002] (Technical field) SUMMARY OF THE DISCLOSURE Embodiments of the present disclosure relate to a display device, an image source device, a transportation device, and a display method. [Background technology]

[0003] A head-up display device (HUD), also known as a HUD, ultimately projects light rays emitted from an image source of the HUD onto an imaging window (such as a rear-mounted imaging plate or a vehicle windshield), allowing the user to directly view the virtual image of the HUD without looking down, thereby improving the user experience. For example, in some cases, the HUD can avoid the distraction of looking down at the dashboard while driving, thereby improving the driving safety factor and providing a better driving experience.

[0004] The information disclosed in the Background section is intended to provide a better understanding of the background of the present application and may therefore include information that does not constitute prior art known to those skilled in the art. Summary of the Invention [Means for solving the problem]

[0005] The present disclosure provides at least a display device, an image source device, a traffic device, and a display method.

[0006] According to a first aspect, at least one embodiment of the present disclosure provides a display device configured to allow a user to observe a virtual image through an eyebox region of the display device, the virtual image including at least a left virtual image portion and / or a right virtual image portion.

[0007] For example, the image surface of the left virtual image portion and / or the right virtual image portion may be a flat surface or a curved surface.

[0008] According to a second aspect, at least one embodiment of the present disclosure provides a display device configured to allow a user to observe a virtual image through an eyebox region of the display device, the virtual image including at least a first virtual image portion and a second virtual image portion whose extension directions of the image planes intersect, and the first virtual image portion is connected to the second virtual image portion.

[0009] According to a third aspect, at least one embodiment of the present disclosure provides a display device configured to allow a user to observe a virtual image through an eyebox region of the display device, the virtual image including at least a first virtual image portion and a second virtual image portion whose extension directions of image planes intersect, and light rays for forming the first virtual image portion and the second virtual image portion are from a same image source display included in the display device.

[0010] According to a fourth aspect, at least one embodiment of the present disclosure provides an image source device, the image source device being an image source device for use in a display device according to any one of the first to third aspects of the present disclosure, and the image source device including an image source assembly and a refractive member, or the image source device being an image source device for use in a display device according to any one of the first to third aspects of the present disclosure, and the image source device including a curved image source display.

[0011] According to a fifth aspect, at least one embodiment of the present disclosure provides a traffic device, comprising the display device according to any one of the first, second and third aspects or the image source device according to the fourth aspect.

[0012] According to a sixth aspect, at least one embodiment of the present disclosure provides a display method, the display method including: projecting an imaging light beam onto an imaging window of a display device, thereby allowing a user to observe a virtual image in a field of view through an eyebox region of the display device; the virtual image includes at least a left virtual image portion and / or a right virtual image portion, and / or the virtual image includes at least a first virtual image portion and a second virtual image portion whose extension directions of image planes intersect, and the first virtual image portion is connected to the second virtual image portion.

[0013] For example, the display method can be used in a display device according to any one of the first to third aspects of the present application, and correspondingly, the related explanations for the display device according to the first to third aspects of the present disclosure also apply to the display method according to the present disclosure.

[0014] It should be noted that the above general description and the following detailed description are merely illustrative and are not intended to limit the present application.

[0015] In order to more clearly describe the technical solutions of the embodiments of the present application or the prior art, the following will briefly describe the drawings necessary to describe the embodiments or the prior art. It is obvious that the drawings described below are only some embodiments of the present application, and those skilled in the art can further obtain other drawings based on these drawings without any creative efforts. [Brief explanation of the drawings]

[0016] [Figure 1] 10A and 10B show schematic diagrams of the positions of virtual images and reference virtual images that are successively zoomed along the column direction. [Figure 2] 1 shows a schematic diagram of different combinations of consecutive virtual images. [Figure 3(a)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(b)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(c)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(d)]1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(e)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(f)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(g)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(h)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(i)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 3(j)] 1 shows a structural schematic diagram of an imaging surface shape of a display device according to an exemplary embodiment of the present application; [Figure 4] 1 shows a structural schematic diagram of a display device according to some embodiments of the present application; [Figure 5] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 6(a)] 1 shows a structural schematic diagram of a backward-concave U-shaped virtual image according to an embodiment of the present application; [Figure 6(b)] 1 shows a schematic diagram of the structure of only the left virtual image according to an embodiment of the present application. [Figure 6(c)] 10A and 10B are structural schematic diagrams comparing a backward-concave U-shaped virtual image and a flat virtual image according to an embodiment of the present application. [Figure 6(d)] 1 shows a structural schematic diagram of a forward-protruding U-shaped virtual image according to an embodiment of the present application; [Figure 7(a)] 1 shows a structural schematic diagram of a U-shaped glass block according to some embodiments of the present application. [Figure 7(b)] 1 shows a structural schematic diagram of a U-shaped glass block according to another embodiment of the present invention. [Figure 8] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 9] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 10(a)]1 shows a structural schematic diagram of a curved image source according to some embodiments of the present application; [Figure 10(b)] 1 shows a structural schematic diagram of a curved image source according to another embodiment of the present application; [Figure 11] 1 shows a structural schematic diagram of a display device according to an embodiment of the third aspect of the present application; [Figure 12] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 13] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 14] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 15] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 16] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 17] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 18] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; [Figure 19] 1A and 1B show structural schematic diagrams of transparent light-collecting parts according to some embodiments of the present application; [Figure 20] 10 shows a structural schematic diagram of a transparent light-collecting portion according to another embodiment of the present application; [Figure 21] 1 shows a structural schematic diagram of a display device according to another embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, exemplary embodiments will be described more fully with reference to the drawings. However, the exemplary embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described herein. On the contrary, by providing these embodiments, the present application will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings indicate the same or similar parts, and therefore, they will not be described repeatedly.

[0018] The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, more specific details are provided to provide a thorough understanding of the embodiments of the present disclosure. However, as will be understood by those skilled in the art, the technical solutions of the present disclosure may be realized without one or more of these specific details, or other methods, components, materials, devices, etc. may be used. In these instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail.

[0019] The flowcharts shown in the drawings are merely illustrative and do not necessarily include all contents or operations / steps, and do not necessarily have to be performed in the order described. For example, some operations / steps can be further decomposed, and some operations / steps can be combined or partially combined, and therefore, the order in which they are actually performed may be changed based on actual circumstances.

[0020] In the present specification, claims, and drawings, terms such as "first," "second," etc. are used to distinguish between different objects, but not to describe a particular order. Furthermore, the terms "comprise," "have," and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may, in the alternative, further include unlisted steps or units, or may, in the alternative, further include other steps or units inherent to the process, method, product, or device.

[0021] The following disclosure provides many different embodiments or examples for realizing different structures of the present application. To simplify the disclosure of the present application, specific example components and installations will be described below. Of course, these are merely illustrative and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and / or letters in different examples; such repetition is for the purposes of brevity and clarity and does not dictate a relationship between the various embodiments and / or installations discussed. Furthermore, while the present application provides examples of various specific processes and materials, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0022] A head-up display (HUD) uses a reflective optical design to project light rays emitted from an image source onto an imaging window (such as an imaging plate or windshield), which then projects the image light rays into the eyebox area, allowing the user to directly view the virtual image through the eyebox area without having to look down. For example, a HUD can help users avoid the distraction of looking down at the dashboard while driving, improving driving safety and providing a better driving experience.

[0023] For example, take a HUD based on reflective imaging using a flat reflector and a curved reflector. Light emitted from the image source of the HUD is sequentially reflected by the flat reflector and the curved mirror, and then reflected by a transparent imaging window and held on one side of the cockpit to enter the user's eyes. For example, the light entering the user's eyes allows the user to see a virtual image displayed on the image source of the HUD, which is presented on the other side of the transparent imaging window. At the same time, because the imaging window itself is transparent, ambient light on the other side of the imaging window can still pass through it and be transmitted to the user's eyes, allowing the user to see the image formed by the HUD without affecting the user's observation of the road conditions outside the vehicle while driving.

[0024] The inventors of the present application have discovered the following through their research: When a user drives normally, the actual road conditions observed by the user through a transparent imaging window are three-dimensional, but conventional HUDs generally produce a single, vertical or nearly vertical virtual image. This can lead to problems such as visual error (between the left and right eyes) and / or visual convergence (conflict between the brain's distances in front and behind the eyes) during the user's viewing process, which can lead to fatigue, nausea, and other adverse physical conditions. For example, visual convergence can occur when augmented reality (AR) content and environmental objects are not aligned, resulting in a discrepancy between the actual physical distance when the eyes view the AR content and the perceived distance of the AR content as perceived by the brain. If this discrepancy is large, the user may experience discomfort. Furthermore, virtual image screens generally do not fit well with external objects, making it difficult to provide the user with a stable and reliable guidance effect continuously during the driving process.

[0025] To solve at least one of the above technical problems, the present application provides a display device, an image source device, a traffic device, and a display method, which can improve the blending effect between virtual images and environmental objects, for example, alleviating visual convergence problems. For example, embodiments of the present disclosure can facilitate positional matching between AR content and environmental objects (matching refers to aligning the AR content and the environmental object, which may refer to their overlapping positions or their relatively close distance, with the proximity of the distance being based on whether the need for use can be met). For example, in some embodiments, a HUD provides at least one virtual image, and at least one of the at least one virtual image is a continuously zooming virtual image. For example, at least one of the left virtual image portion and the right virtual image portion is a continuously zooming screen. For example, the imaging distance of some or all of the continuously zooming virtual images gradually changes, thereby reducing parallax and visual convergence problems, and for example, corresponding AR content can be displayed in a manner that matches environmental objects at different distances. In some embodiments, the optical path of a light ray emitted from at least a part of the screen in the standard optical path is changed to generate a corresponding virtual image distance in at least a part of the left and / or right sides of the virtual image, thereby forming a continuously transitioning irregular-shaped screen and improving problems such as visual error and / or visual convergence. For example, the virtual image may be a continuously distributed 3D virtual image (hereinafter abbreviated as a continuous virtual image), and the formed continuous virtual image may have a continuously zooming virtual image on at least one side of the left and / or right sides.

[0026] Regarding the principle of solving parallax and visual convergence by forming a continuously zooming virtual image, the problem of parallax occurs because there is a positional misalignment between the AR content and the corresponding environmental object, so the position of the virtual image of the AR content seen by one of the user's left and right eyes cannot be aligned with the environmental object, making the display of the AR content appear unrealistic.

[0027] A display device according to some embodiments of the present disclosure may be a display device used in a head-up display or a display device used in a non-head-up display type.

[0028] For example, during the assembly process, a U-shaped virtual image can be formed using a U-shaped glass or an arc-shaped screen, etc., so that the U-shaped virtual image fits in with the external real object, thereby improving the guidance effect provided to the user by the head-up display device.

[0029] Hereinafter, preferred embodiments of the present application will be described with reference to the drawings. As should be understood, the preferred embodiments described herein are only for explaining and interpreting the present application, and are not intended to limit the present application.

[0030] For example, as shown in FIG. 1, a standard optical path is selected. As understood herein, the standard optical path may be a virtual optical path, i.e., a virtual image perpendicular to the ground (reference virtual image) is found or imagined and used at a corresponding screen position. A continuously zoomed virtual image refers to a continuous change in the distance from at least some pixels in at least one column (or row) of the virtual image to the corresponding pixel in the reference virtual image. For example, continuous zooming may refer to continuous zooming in one of the column direction and row direction of the virtual image, or a combination of both directions. FIG. 1 shows a schematic diagram of a virtual image and a reference virtual image continuously zoomed along the column direction.

[0031] There may be multiple consecutive virtual images formed.

[0032] As shown in Figure 2, from the perspective of the virtual image, the continuous virtual image formation can be divided into a left virtual image section (L), a right virtual image section (R), a front lower sub-virtual image section (ground virtual image section) (G), a front sub-virtual image section (F), and a front upper sub-virtual image section (sky virtual image section) (T).

[0033] The combination of consecutive virtual images can be as follows: 1, L - left side only, R - right side only, LR - both left and right. 2, LG-left side and ground, RG-right side and ground. 3. LGR - both left and right sides and ground. 4. LGR+F--both left and right sides, ground, front. 5, LGR+F+T-Left / Right+Ground+Front+Sky.

[0034] Furthermore, depending on the needs of the imaging assembly, settings such as LGF, RGF, LGT, and RGT may be further used.

[0035] Since the cockpit installation position may be different in different countries, the virtual image on one side can be applied to different countries (left and right handle), and in the virtual image on one side, the formed virtual image is a continuous transition.

[0036] For example, in some examples, the display device can be configured so that the user can observe a virtual image formed by the display device in the eyebox region, the virtual image including at least a first virtual image portion and a second virtual image portion whose extension directions of the image plane intersect, and the first virtual image portion is connected to the second virtual image portion.

[0037] As can be understood here, according to actual needs, the area where the observer needs to view the image, i.e., the eyebox area, can be preset, and the eyebox area refers to the area where the observer's both eyes are located and can view the image displayed on the display device, and may be, for example, a planar area or a three-dimensional area.

[0038] For example, the first virtual image portion and the second virtual image portion may be any two sets of virtual images from the corresponding left virtual image portion (L), right virtual image portion (R), front lower sub-virtual image portion (G), front sub-virtual image portion (F) and front upper sub-virtual image portion (T).

[0039] 3(a) to 3(j) are schematic structural diagrams of the image plane shapes of display devices according to exemplary embodiments of the present application.

[0040] Figures 3(a) to 3(j) correspond to schematic diagrams of imaging states of the display device where the imaging states are L (left side virtual image portion only), R (right side virtual image portion only), L+G (left side and front lower sub-virtual image portion), L+T (left side and front upper sub-virtual image portion), L+R+G (left and right sides and front lower sub-virtual image portion), L+R+F (left and right sides and front sub-virtual image portion), L+R+T (left and right sides and front upper sub-virtual image portion), L+R+T+G (left and right sides and front lower sub-virtual image portion, front upper sub-virtual image portion), L+R+T+G+F (left and right + front lower sub-virtual image portion + front + sky) and the connection portion of the virtual images is an arc, and L+R+T+G+F (left and right + ground + front sub-virtual image portion + front upper sub-virtual image portion) and the connection portion of the virtual images is a right angle.

[0041] 3(a) to 3(j), the display device of the exemplary embodiment is configured so that a user can view a virtual image through the eyebox region of the display device. The virtual image includes at least a left virtual image portion (L) and / or a right virtual image portion (R), which correspond to the left virtual image portion (L) and the right virtual image portion (R) in FIG. 2.

[0042] For example, the display device of the present application is a head-up display device, and the head-up display device further includes an imaging window 300, which is configured to reflect incident light rays to the eyebox region.

[0043] For example, the head-up display system of the present application has a multi-layer imaging system, and a wide-area imaging layer is installed on at least one layer, i.e., a wide-area HUD is installed, and the arrangement of the wide-area HUD is compatible with the visible area of ​​the windshield, so that the image presented by the light beam emitted from the wide-area HUD can cover the visible area of ​​the windshield, for example, the image presented by the light beam emitted from the wide-area HUD can cover more than 40% of the area of ​​the windshield, and further can cover more than 50%, more than 60%, more than 70%, more than 80%, or more than 90% of the area of ​​the windshield as necessary. Compared to conventional HUDs in related technology that are based on free-form reflectors and have a small field of view (FOV), the arrangement of multiple light sources in the wide-area HUD is compatible with the visible area of ​​the windshield, so the light emitted from the wide-area HUD can present an image that covers the visible area of ​​the windshield, achieving the goal of being able to display an image at any position within the visible area of ​​the windshield. As a result, the wide-area HUD can display richer content and improve the user experience of the HUD.

[0044] For example, at least one embodiment of the present disclosure further provides an image source device, wherein the image source device is an image source device used in a display device and the image source device includes an image source assembly 100 and a refractive member 121, or the image source device is an image source device used in a display device and the image source device includes a curved image source display 110.

[0045] For example, at least one embodiment of the present disclosure provides a traffic device, including a display device in any embodiment.

[0046] For example, at least one embodiment of the present disclosure provides a display method, comprising the steps of projecting imaging light rays onto an imaging window of a display device, thereby allowing a user to observe a virtual image in his or her field of view through an eyebox region of the display device, wherein the virtual image includes at least a left virtual image portion and / or a right virtual image portion, and / or the virtual image includes at least a first virtual image portion and a second virtual image portion whose extension directions of the image planes intersect, and the first virtual image portion is connected to the second virtual image portion.

[0047] As can be understood here, for example, in some embodiments, the type of virtual image portion can be determined based on the position of the virtual image portion relative to the driving path in the user's visual perception, and for example, the virtual image portion may be a left virtual image portion located on the left side of the driving path, a right virtual image portion located on the right side of the driving path, or a front virtual image portion located between the left virtual image portion and the right virtual image portion.

[0048] For example, in some embodiments, the virtual image may include one virtual image portion, or the virtual image may include two virtual image portions, and the extension directions of the image planes where the two virtual image portions are located intersect or are approximately parallel, or the virtual image may include at least three virtual image portions, and the extension directions of the image planes where at least some adjacent virtual image portions are located intersect.

[0049] For example, when the virtual image includes only the left virtual image portion (L), the virtual image is a continuous virtual image. That is, in this state, the screen content of the left virtual image portion (L) may be continuous or discontinuous, but the overall image of the left virtual image portion (L) is a non-tiling virtual image and / or a continuously zooming virtual image, thereby solving problems such as the user's parallax and / or visual convergence by forming a continuously zooming virtual image during the process of the user observing the left virtual image portion (L).

[0050] Similarly, for example, the virtual image may be configured to include only the right virtual image portion (R), and in this case, the virtual image is also a continuous virtual image. That is, in this state, the screen content of the right virtual image portion (R) may be continuous or discontinuous, but the overall image of the right virtual image portion (R) is a non-tiling, continuously zooming virtual image, thereby solving problems such as the user's parallax and / or visual convergence by forming a continuously zooming virtual image during the process of the user observing the right virtual image portion (R).

[0051] For example, the virtual image may be configured to simultaneously include a left virtual image portion (L) and a right virtual image portion (R), and in this configuration, the virtual image is also a continuous virtual image. That is, the screen content of the left virtual image portion (L) or the right virtual image portion (R) may be continuous or discontinuous, but the overall images of the left virtual image portion (L) and the right virtual image portion (R) are both non-tiling, continuously zooming virtual images. Furthermore, if the left virtual image portion (L) and the right virtual image portion (R) are connected, the connection point between them is also a non-tiling, continuously zooming virtual image.

[0052] Furthermore, the virtual image formed by the display device may further include an intermediate virtual image section, which includes one or more of a front-lower sub-virtual image section (G), a front sub-virtual image section (F), and a front-upper sub-virtual image section (T). For example, the front-lower sub-virtual image section (G), the front sub-virtual image section (F), and the front-upper sub-virtual image section (T) respectively display a screen on the ground, a screen in front, and a screen of the sky, in that order.

[0053] For example, one or more of the left virtual image section (L), the right virtual image section (R), the front lower sub-virtual image section (G), the front sub-virtual image section (F) and the front upper sub-virtual image section (T) may be configured to be perpendicular to the ground or inclined with respect to the ground.

[0054] For example, the virtual image may be configured such that any adjacent virtual image portions are connected, and the connection points of the adjacent virtual image portions form a non-tiling, continuously zooming virtual image. For example, the finally formed continuous virtual image may be configured as a dustpan-shaped virtual image (LGR+F), that is, including left and right virtual images, a front-lower sub-virtual image, and a front-front sub-virtual image, where the left virtual image and the front-lower sub-virtual image, the left virtual image and the front-front sub-virtual image, the right virtual image and the front-front sub-virtual image, and the right virtual image and the front-front sub-virtual image are all connected. By forming a non-tiling, continuously zooming virtual image, problems such as user parallax and / or visual convergence can be effectively solved. Compared with a U-shaped virtual image (LGR left side + ground + right side or LFR left side + front + right side), the dustpan-shaped virtual image (LGR+F) can fit the ground and both sides, and can form a screen display that does not affect the distant view in front.

[0055] As can be understood, during the construction process, the front-lower sub-virtual image portion (G), the front sub-virtual image portion (F), and the front-upper sub-virtual image portion (T) can be flexibly selected and set in the finally formed virtual image according to needs. In the finally constructed virtual image, when the intermediate virtual image portion includes many of the front-lower sub-virtual image portion (G), the front sub-virtual image portion (F), and the front-upper sub-virtual image portion (T), adjacent virtual image portions of the intermediate virtual image portion are at least partially connected. For example, when the intermediate virtual image portion includes the front-lower sub-virtual image portion (G) and the front sub-virtual image portion (F), at least a portion of the image formed at the connection point between the front-lower sub-virtual image portion (G) and the front sub-virtual image portion (F) is a non-tiling, continuously zooming virtual image. Optionally, adjacent sub-virtual image portions of the intermediate virtual image portion are completely connected, thereby achieving better parallax and visual convergence prevention effects.

[0056] In some embodiments, the display device can be configured to include an image source assembly having an image source display, the image source display including a first display region and a second display region, wherein image light rays emitted from the first display region correspond to a left virtual image portion (L) and / or a right virtual image portion (R), and image light rays emitted from the second display region correspond to other portions of the virtual image. For example, the first display region and the second display region are mounted on the same image source display. That is, the light rays for forming the first virtual image portion and the second virtual image portion originate from the same image source display of the display device.

[0057] In the specific configuration process of the display device, the user can observe the virtual image formed by the display device in the eyebox area in the following various ways, and the virtual image includes at least a left virtual image portion (L) and / or a right virtual image portion (R).

[0058] 1. A refractive element is installed in the imaging path of the image source display, and the refractive element is configured to perform a refraction process on the image light rays that are emitted from the image source display and then enter the refractive element, so that the virtual image finally formed on the imaging window transitions continuously.

[0059] 2. The image source display is configured as a curved image source display, so that the image light from the image source display is an image light that can form a continuously transitioning irregular image from the beginning. For example, the image source display can be an irregular screen, an irregular projection screen, an irregular LED screen, an irregular OLED (Organic Light-Emitting Diode) screen, an irregular LCD screen, etc.

[0060] A display device according to at least one embodiment of the present disclosure can provide a bilaterally shaped screen with at least one of left and right sides, thereby displaying virtual images that match the two sides of a road in the real world, thereby improving the user experience, improving the fit between the light field screen and the external real object, and improving the pointing effect.

[0061] In the embodiments of the present disclosure, irregular shapes refer to irregular shapes. For example, regular shapes include rectangles, circles, triangles, parallelograms, and regular polygons. For example, irregular shapes include, but are not limited to, U-shapes, L-shapes, and dustpan shapes.

[0062] FIG. 4 shows a structural schematic diagram of a display device according to some embodiments of the present application.

[0063] As shown in FIG. 4, some embodiments of the display device include an image source assembly 100 and a magnification assembly 200 .

[0064] As shown in FIG. 4, the image source assembly 100 includes an image source display 110 and a light control unit 120, the light control unit 120 includes a refractive element 121, and the image source assembly 100 emits a first image light beam.

[0065] 4, the magnifying assembly 200 is installed in the imaging path of the image source assembly 100, and the first image light beam emitted by the image source assembly 100 is formed as a second image light beam after passing through the magnifying assembly 200. That is, the magnifying assembly 200 is configured to perform magnification processing on the incident image light beam to obtain a magnified light beam for forming at least a part of a virtual image.

[0066] As shown in FIG. 4, the second image light rays are reflected through the imaging window 300 and then formed as a continuous virtual image in the eyebox region, and the continuous virtual image includes at least one of a left virtual image portion (L) and a right virtual image portion (R).

[0067] In the display device according to the second embodiment, similarly to the display device according to the first embodiment, the finally formed continuous virtual image may be configured to include a left virtual image portion (L) and / or a right virtual image portion (R), and the formed continuous virtual image may further include one or more of a front-lower sub-virtual image portion (G), a front sub-virtual image portion (F), and a front-upper sub-virtual image portion (T). In the continuous virtual image, the connection points of adjacent virtual images form non-tiling, continuously zooming virtual images.

[0068] For example, if the entire irregular-shaped virtual image that is finally formed is a U-shaped virtual image (the formed image may be a dustpan-shaped virtual image or a virtual image of other shapes), a U-shaped refracting element (e.g., a U-shaped glass block) can be installed in the imaging path of the image source assembly 100, and the U-shaped refracting element can add an optical path to the light beam passing through it. At this time, the equivalent object distance for this part of the light beam changes, and the imaging distance also changes accordingly, finally realizing a U-shaped virtual image.

[0069] That is, the actual object distance is not changed during the imaging process, but by placing a U-shaped refractive element in the imaging path of image source assembly 100, the optically equivalent object-to-optical device distance is changed, and therefore the equivalent object distance of the first image ray from image source assembly 100 is also changed.

[0070] For example, after installing a U-shaped glass block, the light beam emitted from the image source display 110 is refracted by the U-shaped glass block before exiting. By installing the U-shaped glass block, the position of the virtual image formed by the image source assembly 100 changes, i.e., after adding the U-shaped glass block, the object distance of the image source assembly 100 changes, and accordingly, the virtual image formed through the imaging window 300 also becomes U-shaped. When the refractive index is the same, the thicker the glass block, the closer the distance from the formed virtual image to the human eye.

[0071] Similarly, irregularly shaped glass blocks can achieve a dustpan-type screen presentation.

[0072] For example, the refractive element 121 is related to the image surface shape of the virtual image that will ultimately be formed, and by changing the type of refractive element 121, the overall continuous virtual image that reflects the virtual image formed on the imaging window 300 to the human eye can ultimately be a U-shaped virtual image, a dustpan-shaped virtual image, or any other virtual image having a desired shape, and this application is not specifically limited thereto. For example, the surface shape of at least a portion of the light-emitting surface of the refractive element 121 is matched with the image surface shape of at least a portion of the virtual image that will ultimately be formed. For example, matched means that the surface shapes are the same or similar.

[0073] Optionally, the magnifying assembly 200 may be a curved mirror, a convex lens, a diffractive and geometrical wave guide, a Holographic Optical Element (HOE) windshield, or the like.

[0074] Optionally, the magnifying assembly 200 is a concave reflector, in which case the surface of the concave reflector close to the display area is a concave curved surface. By installing a curved reflector, the imaging size of the image screen can be enlarged, allowing the display device to have a longer imaging distance and a larger imaging size. The curved reflector can also cooperate with the imaging window 300 (e.g., a windshield) to eliminate virtual image distortion caused by the imaging window 300.

[0075] FIG. 5 is a structural schematic diagram of a display device according to another embodiment of the present invention.

[0076] As shown in FIG. 5, another display device includes an image source assembly 100 and a magnification assembly 200 .

[0077] As shown in FIG. 5, image source assembly 100 includes a curved image source display 110, and image source assembly 100 emits a first image beam.

[0078] As shown in FIG. 5, the magnifying assembly 200 is installed in the imaging path of the image source assembly 100, and the first image light beam emitted by the image source assembly 100 is formed as a second image light beam after passing through the magnifying assembly 200.

[0079] For example, after the second image light rays are reflected through the imaging window 300, they are formed as a continuous virtual image in the eyebox region, and the continuous virtual image includes at least one of a left virtual image portion (L) and a right virtual image portion (R).

[0080] In the display device according to the third aspect, similarly to the display device according to the first aspect, the finally formed continuous virtual image may be configured to include a left virtual image portion (L) and / or a right virtual image portion (R), and the formed continuous virtual image may further include one or more of a front-lower sub-virtual image portion (G), a front sub-virtual image portion (F), and a front-upper sub-virtual image portion (T). In the continuous virtual image, the connection points of adjacent virtual images form non-tiling, continuously zooming virtual images.

[0081] For example, the final formed irregular virtual image is a U-shaped virtual image (the formed image may be a dustpan-shaped virtual image or a virtual image of other shapes), and the curved image source display 110 is an OLED screen, the light-emitting surface of which is a U-shaped arc surface, which ultimately forms the U-shaped virtual image. The curved image source display 110 includes a display area, which is disposed on the light-emitting surface of the OLED screen. A first image ray emitted from the display area of ​​the curved image source display 110 is reflected by the magnifying assembly 200 and then formed as a second image ray, which is reflected through the imaging window 300 and then forms a U-shaped virtual image in the eyebox area.

[0082] For example, the surface shape of the curved image source display 110 is related to or matches the surface shape of at least a portion of the final virtual image, and by changing the type of curved image source display 110, the shape of the overall continuous virtual image that reflects the virtual image formed on the imaging window 300 to the human eye can be changed, so that the final continuous virtual image can become a U-shaped virtual image, a dustpan-shaped virtual image, or any other virtual image with a desired appearance. For example, matching means that the surface shapes are the same or similar.

[0083] Optionally, the magnifying assembly 200 may be a curved mirror, a convex lens, a diffractive and geometrical wave guide, a Holographic Optical Elements (HOE) windshield, or the like.

[0084] Optionally, the magnifying assembly 200 is a concave reflector, in which case the surface of the concave reflector close to the display area is a concave curved surface. By installing a curved reflector, the imaging size of the image screen can be enlarged, allowing the display device to have a longer imaging distance and a larger imaging size. The curved reflector can also cooperate with the imaging window 300 (e.g., a windshield) to eliminate virtual image distortion caused by the imaging window 300.

[0085] Figure 6(a) shows a schematic diagram of the structure of a backward-recessed U-shaped virtual image according to an embodiment of the present invention. Figure 6(b) shows a schematic diagram of the structure of only the left virtual image according to an embodiment of the present invention. Figure 6(c) shows a schematic diagram of the structure of a backward-recessed U-shaped virtual image and a planar virtual image according to an embodiment of the present invention. Figure 6(d) shows a schematic diagram of the structure of a forward-protruding U-shaped virtual image according to an embodiment of the present invention.

[0086] 6(a) to 6(d), in a continuous virtual image formed by a display device according to any one of the first, second, and third aspects of the present application, corresponding positions in the virtual image of image light rays that are incident on the refractive member 121 and are on the same contour line are on the same circumference of a polar coordinate system, and the polar coordinate system has a set reference point as its origin. The larger the polar coordinate angle of a position among different positions in the virtual image relative to the left virtual image portion (L) and / or the right virtual image portion (R) in the continuous virtual image, the closer the corresponding portion of the virtual image is to the eyebox region.

[0087] In this embodiment, the imaging distance of the virtual image can be gradually changed within a polar coordinate system, so that the AR content can be presented at an appropriate size and at a distance that matches the environmental object, thereby aligning or overlapping the AR content with the environmental object, thereby solving the problems of parallax and visual congestion, and realizing the gradual change of points of interest (POIs) from the farthest position.

[0088] A display device according to some embodiments of the present disclosure creates a single 3D screen (hereinafter referred to as an irregular screen) continuously distributed in the exterior space of a vehicle, including at least one of a left screen and a right screen. As can be understood, to fit objects in a continuous three-dimensional external space, the screen must be continuous three-dimensional. The vertical screen of a conventional HUD is difficult to achieve this function, especially when fitting points of interest (POIs) such as buildings on both sides of the road. According to the principles of AR, a 3D virtual screen that matches the real three-dimensional world is required to achieve true AR in space. A display device according to some embodiments of the present disclosure improves the tilted or tiled screen to solve the blending effect of POIs on both sides of the road. A display device according to some embodiments of the present disclosure has obvious advantages when targeting products with a large FOV.

[0089] When an intermediate virtual image portion exists in a continuous virtual image formed by a display device according to any one of the first, second and third aspects of the present application, and the intermediate virtual image portion includes a front-lower sub-virtual image portion (G) and / or a front-upper sub-virtual image portion (T), the larger the depression or elevation angle among the different positions of the virtual image, the closer the corresponding portion of the virtual image is to the eyebox region.

[0090] In this installation state, when the user's vehicle is traveling, for example, when the user is performing assisted driving using a display device according to any one of the first, second and third aspects of the present application, the middle of the road on both sides will appear far away, the sides will appear close, nearby objects will appear large and distant objects will appear small, and the display will better fit the objects in the external environment, effectively resolving problems such as the user's parallax and visual convergence, and reducing the user's driving fatigue.

[0091] For example, in the continuous virtual image formed by the display device of any of the first, second and third aspects, the image surface shape of the left virtual image portion and / or the right virtual image portion is curved, and by forming a curved virtual image, it can better fit the characteristics of points of interest on both sides of the road, effectively solving problems such as the user's parallax and / or visual convergence.

[0092] As can be appreciated, in a geographic information system, a point of interest may be a house, a shop, a postbox or a bus station, etc.

[0093] For example, the continuous virtual image formed by the display device of any of the first, second, and third aspects may include a front-lower sub-virtual image portion (ground virtual image portion) (G), which may be formed as a virtual image laid flat against the ground (parallel or nearly parallel to the ground) or tilted (the farther part is higher and the closer part is lower), and may have at least one virtual image portion on each side, with the larger the angle, the closer the virtual image distance. In combination with a ground virtual image portion, this can solve the problem of the ground display screen. For example, the connecting portion of the virtual image may be a right-angle or arc / fillet connection.

[0094] For example, the continuous virtual images formed by the display device according to any one of the first, second, and third aspects may include at least one virtual image that satisfies the requirements that the virtual image distances of one or more edges of the virtual image are relatively close and the distance of the virtual image center is relatively far, such as a U-shaped virtual image. For example, the U-shaped virtual image may be a U-shape that protrudes forward from left to right or a U-shape that concaves backward, i.e., a virtual image having three parts: left side, front side, and right side, as specifically shown in Fig. 6(a), or a U-shaped virtual image having three parts: left side, ground side, and right side, as specifically shown in Fig. 6(d), or a U-shaped virtual image having three parts: left side, top side, and right side.

[0095] Furthermore, the continuous virtual image may optionally be a dustpan-shaped virtual image, i.e., a virtual image having four sections, i.e., a left side, a front side, a right side, and a ground side, based on the shape of the U-shaped virtual image. Furthermore, the continuous virtual image may optionally be a dustpan-shaped virtual image, i.e., a virtual image having four sections, i.e., a left side, a front side, a right side, a ground, and an upper side, based on the shape of the dustpan-shaped virtual image. For example, each of the virtual images may be installed at an angle. Of course, the U-shaped virtual image may be installed at an angle facing forward or backward.

[0096] Furthermore, for example, a U-shaped virtual image can be formed in the same manner as a dustpan, with the middle protruding forward, both sides extending backward, and a certain height in the vertical direction, with the upper and / or lower ends extending backward. In other words, the dustpan-shaped virtual image may be configured so that virtual images exist in front, to the left, right, below, and / or above the dustpan-shaped virtual image.

[0097] For example, the U-shaped virtual image portion includes a left virtual image portion and a right virtual image portion, and the U-shaped virtual image portion further includes one of a front-lower sub-virtual image portion, a front sub-virtual image portion, and a front-upper sub-virtual image portion.

[0098] As can be understood, the continuous virtual image formed by the display device according to any one of the first, second, and third aspects may be configured to have an L-shaped virtual image portion, i.e., form an L-shaped virtual image. The L-shaped virtual image portion includes a left virtual image portion or a right virtual image portion, and further includes one of a front-lower sub-virtual image portion, a front sub-virtual image portion, and a front-upper sub-virtual image portion.

[0099] For example, one or more of the left virtual image section, right virtual image section, front lower sub-virtual image section, front sub-virtual image section and front upper sub-virtual image section are perpendicular to the ground or inclined relative to the ground, or the front lower sub-virtual image section is laid flat on the ground or parallel to it.

[0100] In some example scene applications of the display device of any of the first, second, and third aspects, the virtual image displayed in the left virtual image section includes information related to a left-side external point of interest located on the left side of the driving path, and / or the virtual image displayed in the right virtual image section includes information related to a right-side external point of interest located on the right side of the driving path. Similarly, the front-lower sub-virtual image section (G), the front sub-virtual image section (F), and the front-upper sub-virtual image section (T) may be configured so that the virtual images displayed include information related to the corresponding points of interest.

[0101] For example, by positioning and adjusting the virtual images formed by the display device, points of interest (POIs) can be displayed on the continuous virtual images on both sides, blending in with features on both sides of the real road, such as buildings, parking lots, bus stations, traffic signs, etc.; or a navigation guide user interface (UI) can be displayed on the continuous virtual images on both sides, blending in with intersections on the real road, such as crossroads, main entrance / exit roads / ramps, etc.; or a blind spot display UI can be displayed on the continuous virtual images on both sides, blending in with obstacles (cars, bicycles, pedestrians, etc.) coming from the blind spots on both sides of the vehicle on the real road; or a navigation guide UI can be displayed on the continuous virtual image of the ground, blending in with the displayed road surface, providing lane change and overtaking guidance.

[0102] For example, a typical multi-layer screen has discontinuous distances, making it unable to accurately match the objects on both sides of a real road. When there are obstacles such as trees, traffic signs, streetlights, or walls (tunnels) on both sides of the road or FOV, the virtual screen displaying the POI or other related UI may be farther away than the real thing (the screen may intrude into the real thing), causing visual congestion and dizziness, affecting the user experience. Continuous screens on the left and / or right sides can solve this problem and present a UI that corresponds to the virtual image distance and matches the display.

[0103] Figure 7(a) shows a structural schematic diagram of a U-shaped glass block according to some embodiments of the present application. Figure 7(b) shows a structural schematic diagram of a U-shaped glass block according to another embodiment of the present application. Figure 8 shows a structural schematic diagram of a display device according to another embodiment of the present application. Figure 9 shows a structural schematic diagram of a display device according to another embodiment of the present application.

[0104] By installing a refractive element in the imaging path of the image source display, when the continuous virtual image formed includes at least one of a left virtual image portion (L) and a right virtual image portion (R), by changing the type of refractive element 121, the overall continuous virtual image that reflects the virtual image formed on the imaging window 300 to the human eye can finally be a U-shaped virtual image, a dustpan-shaped virtual image, or a virtual image having any other desired shape.

[0105] In some embodiments, the optical path in the refractive member of the light ray corresponding to the refracted light ray emitted from at least a portion of the light exit surface of the refractive member is gradually changed.

[0106] For example, as shown in FIGS. 7(a), 7(b), 8, and 9, the U-shaped glass block may have a structure with a downwardly concave arc surface or a half-downwardly concave arc surface. The lower surface of the U-shaped glass block is the surface of the refractive element 121 closest to the image source (which can be considered the light-incident surface of the image light), and the upper surface of the U-shaped glass block is the surface of the refractive element 121 away from the image source (which can be considered the light-exit surface of the image light). Along the left-right direction, the optical path of the image light emitted from at least a portion of the region gradually changes from entering the refractive element 121 from the lower surface to exiting from the upper surface, thereby gradually changing the virtual image distance (VID) from different positions to the eye in the formed virtual image. For example, the optical path increases and then decreases. It should be understood that the above description of the vertical direction is merely for ease of explanation of the drawings and does not limit the actual structure of the display device.

[0107] As shown in Figure 9, a U-shaped refractive element (such as a U-shaped glass block) is installed in the output light path of a part of the image source, and the refractive element increases the light path of some light rays, while the light path of the uncovered image source remains unchanged. Therefore, the light rays that pass through the refractive element will finally form a U-shaped screen, and the light rays that do not pass through the refractive element will form a vertical screen.

[0108] For example, the refractive element 121 includes a plurality of stacked sub-refractive elements, which may be made of different materials and have different refractive indices.

[0109] As can be understood, the optical distance that the refractive element 121 propagates the image light rays emitted from the image source display 110 to the magnifying assembly 200 refers to the product of the geometric path along which the corresponding image light rays emitted from the image source display 110 are emitted to the magnifying assembly 200 and the refractive index of the propagation medium. When a refractive element is installed, the geometric path of the image light rays emitted from the image source display 110 to the magnifying assembly 200 includes a portion that passes through the refractive element 121 and a portion that passes through air, and the product of the portion of the geometric path of the image light rays that passes through the refractive element and the refractive index of the refractive element through which they pass is the above-mentioned "additional optical distance."

[0110] Alternatively, the above-mentioned "additional optical distance" may be defined as the product of the portion of the geometric path that passes through the refractive element 121 in the process of the image light rays emitted from the image source propagating to the magnification assembly 200 and the difference in refractive index obtained by subtracting the refractive index of air from the refractive element 121 through which the image light rays pass.

[0111] In the above-described embodiments, the refractive index of the glass block is changed by structural changes (the light exit surface is U-shaped), as shown in FIGS. 7(a) and 7(b). In some other embodiments, the refractive index of the entire glass block can be changed by changing the refractive index of the glass block itself. That is, the final U-shaped virtual image is formed by changing the thickness and / or refractive index of the glass block. For example, the thickness and / or refractive index of the refractive element 121 gradually change along the direction perpendicular to the light entrance surface of the refractive element 121.

[0112] For example, the light output side of the refractive element 121 has a cylindrical surface or a hyperbolic surface. When the refractive element 121 is installed, the refractive element 121 may be closely attached to the image source display 110, or there may be a limited gap between the refractive element 121 and the image source display 110, and the position of the image source display 110 can be selected according to usage needs. For example, when the gap is used, there will be a certain light loss, that is, some light will be reflected by the light input surface of the refractive element 121 and thus will be wasted.

[0113] Optionally, the entrance surface of the refractive member 121 is spaced apart from the image source display 110 by a distance of 10 mm or more. In other embodiments, the entrance surface of the profiled refractive member 121 is spaced apart from the image source assembly 110 by a distance of less than 10 mm.

[0114] For example, a fixing device, such as a snap or a locking groove, may be installed on the side of the refractive member 121 to fix the glass block and prevent it from moving. For example, the number of refractive members 121 is not limited to one, and it is possible to form, for example, a plurality of independent consecutive virtual images, or a plurality of consecutive consecutive virtual images.

[0115] The installation positions of the image source display 110 and the refractive element 121 are independent of each other. For example, when the refractive element 121 is configured as a U-shaped glass block, flexible installation of the position of the image source display 110 can be realized. For example, in FIG. 7( a), the image source display 110 is installed horizontally and can cooperate with the refractive element 121 to realize a full / partial U-shaped virtual image, thereby reducing the requirement for the installation angle of the image source without requiring adjustment of the position of the image source display 110. In other embodiments, the image source display 110 may be at another angle (which may theoretically be any angle), and the required virtual image requirement can be achieved by adding a corresponding U-shaped glass block. This method can reduce the requirement for the installation angle of the image source display 110. It should be understood here that the U-shaped glass block constituting the refractive element 121 may be a complete structure or a tiled structure of multiple glass blocks.

[0116] For example, the refractive member 121 is light-transmitting, and the refractive index of the refractive member 121 is different from the refractive index of air, for example, the refractive index of the refractive member 121 is greater than the refractive index of air (i.e., greater than 1), thereby causing the optical path from the image light beam of the image source assembly 110 to the magnification assembly 200 to be different, thereby realizing at least a portion of the area of ​​the virtual image to gradually zoom in.

[0117] For example, the material of the refractive member 121 may be at least one of an inorganic material, an organic material, and a composite material. For example, the inorganic material may include glass, quartz, etc., the organic material may include a polymer material such as a resin material, and the composite material may include metal oxide doped polymethyl methacrylate, etc. The material of the refractive member 121 is not limited to the above-mentioned materials, and may be any material that is light transmissive and has a refractive index different from that of air.

[0118] For example, the light transmittance of the refractive member 121 to light rays is 60% to 100%. For example, the light transmittance of the refractive member 121 to light rays is 80% to 99%. For example, the light transmittance of the refractive member 121 to light rays is 90% to 99%.

[0119] For example, the refractive element 121 is installed in the optical path along which the image light rays emitted from the image source display 110 propagate to the magnifying assembly 200, in other words, the refractive element 121 may be located in the optical path between the magnifying assembly 200 (curved mirror) and the image source (image source display 110). For example, the refractive element 121 is located in the optical path along which the image light rays emitted from the image source display 110 propagate to the magnifying assembly 200, and is not limited thereto, the refractive element 121 may be located in the optical path along which the magnifying assembly 200 reflects the image light rays to the imaging window 300.

[0120] For example, the incident surface of the refractive member 121 can be attached to the display surface of the image source display 110 with an optically transparent adhesive. For example, the incident surface of the refractive member 121 and the display surface of the image source display 110 can be spaced apart. For example, the incident surface of the refractive member 121 and the display surface of the image source display 110 can be parallel to and spaced apart.

[0121] In some embodiments, the display device equipped with the refractive member can change the position of the virtual image to reduce the distance between the position of the virtual image and the focus of the user's line of sight, thereby improving the visual convergence conflict and improving the user experience, such as preventing or reducing the occurrence of poor physical conditions such as fatigue and nausea, thereby improving driving safety.

[0122] Figure 10(a) shows a structural schematic diagram of a curved image source according to some embodiments of the present application, Figure 10(b) shows a structural schematic diagram of a curved image source according to another embodiment of the present application, and Figure 11 shows a structural schematic diagram of a display device according to another embodiment of the present application.

[0123] In the display device according to the third embodiment, the image source display 110 is configured as a curved image source display 110, so that the image light from the image source display 110 can form a continuously transitioning irregular image from the beginning. By changing the type of curved image source display 110, the shape of the entire continuous virtual image that reflects the virtual image formed on the imaging window 300 to the human eye can be changed. The distances from at least some of the virtual images to the eye are different and gradually change, thereby realizing the virtual image to gradually zoom, and the final continuous virtual image can become a U-shaped virtual image, a dustpan-shaped virtual image, or a virtual image with any desired shape.

[0124] The gradual zooming may be gradual zooming in one direction of the direction perpendicular to the ground surface of the virtual image and the direction parallel to the ground surface, or may be gradual zooming in a combination of the two directions.

[0125] Referring to Figures 10(a), 10(b) and 11, the curved image source display 110 may be configured to have a downwardly concave arc surface or a half downwardly concave arc surface, and in other embodiments, the curved image source display 110 may be configured to have an upwardly protruding arc surface or other shapes according to needs.

[0126] For example, the curved image source display 110 may be configured such that a portion thereof is a flat screen and another portion thereof is an arc-shaped screen, and the image light beams of the flat screen passing through the magnification assembly 200 ultimately form a vertical virtual image, while the image light beams of the arc-shaped screen passing through the magnification assembly 200 ultimately form a U-shaped virtual image. As can be understood herein, a vertical screen can be considered to be vertical or approximately vertical, and may have an error within a certain angle range; for example, when the included angle between the screen and the ground is in the range of 80 to 100 degrees, it can be considered to form a vertical screen.

[0127] For example, a fixing device, such as a snap or a locking groove, may be installed on the side of the curved image source display 110 to fix the curved image source display 110 and prevent it from moving.

[0128] For example, the number of curved image source displays 110 is not limited to one.

[0129] For example, the curved image source display 110 can form multiple independent U-shaped virtual images, multiple continuous U-shaped virtual images, and so on.

[0130] For example, the depth of field of the curved image source display 110 may be 0.5 to 1.5 cm. Optionally, the depth of field is 1 cm. As understood herein, the depth of field is the difference between the farthest point and the closest point of the virtual image formed by the curved image source display 110 from the human eye.

[0131] For example, the curved image source display 110 includes at least one of a micron-order LED display, a millimeter-order LED display, a silicon-based liquid crystal display, a digital light processor, and a micro-electro-mechanical system display.

[0132] FIG. 12 is a structural schematic diagram of a display device according to another embodiment of the present invention.

[0133] 12, the display device includes an image source assembly (image transmitter) 100 and a magnifying element 200. The magnifying element 200 includes a first reflecting member 210 and a second reflecting member 220.

[0134] 12, the first image light beam emitted by the image source assembly 100 is formed as a second image light beam after passing through the first reflecting member 210 and the second reflecting member 220. For example, the second image light beam is formed as a continuous virtual image in the eyebox region after being reflected through the imaging window 300, and the continuous virtual image includes at least one of a left virtual image portion (L) and a right virtual image portion (R).

[0135] For example, the magnifying element 200 may further include a third reflecting element, a fourth reflecting element, etc. according to imaging needs, and the present application does not specifically limit the number and installation type of the reflecting elements in the magnifying element 200.

[0136] For example, the first reflecting member 210 may include at least one of a flat mirror, a curved mirror, an aspherical mirror, and a spherical mirror, and the second reflecting member 220 may be a curved mirror, which may be a concave reflecting mirror. In this case, the surface of the concave reflecting mirror that is closest to the display area is a concave curved surface. By installing a curved reflecting mirror, the head-up display has a longer imaging distance and a larger imaging size, and the curved reflecting mirror can further cooperate with a curved imaging window (described below), such as a windshield, to eliminate virtual image distortion caused by the imaging window.

[0137] For example, the curved mirror may be configured as a zoom curved mirror. In some cases, the zoom curved mirror is configured before shipping and the curvature does not change during use. In other cases, the zoom curved mirror can adjust its curvature using an electric field, thereby changing the focal length of the curved mirror in real time and quickly during use.

[0138] For example, in the display device of any of the first, second and third aspects, the image source display 110 or the curved image source display 110 may be a monochrome image source or a color image source (e.g., an image source capable of emitting RGB mixed light), such as a light-emitting diode (LED) display or a liquid crystal display (LCD).

[0139] For example, the image source display 110 or the curved image source display 110 may be a single image source, a double image source, or a multi-image source, such as a light-emitting diode (LED) display or a liquid crystal display (LCD), and the present application does not limit the type of the image source display 110 or the curved image source display 110.

[0140] For example, the image source display 110 or the curved image source display 110 may be configured as a developing device such as a liquid crystal display (LCD), a light emitting diode (LED), an organic light emitting diode (OLED), a projection device, etc. that emits a virtual or real image, and may be configured as a virtual or real image formed by these developing devices.

[0141] Figure 13 shows a structural schematic diagram of a display device according to another embodiment of the present invention. Figure 14 shows a structural schematic diagram of a display device according to another embodiment of the present invention. Figure 15 shows a structural schematic diagram of a display device according to another embodiment of the present invention. Figure 16 shows a structural schematic diagram of a display device according to another embodiment of the present invention.

[0142] In some embodiments, the display device is configured to generate at least two virtual images at different times or at the same time, the at least two virtual images including a first virtual image and a second virtual image, the first virtual image including a left virtual image portion and / or a right virtual image portion.

[0143] For example, the distance from the proximal end of the first virtual image to the eyebox region of the display device is less than the distance from the proximal end of the second virtual image to the eyebox region, the included angle between the first virtual image and the horizontal direction is greater than, equal to, or less than 90 degrees, and the included angle between the second virtual image and the horizontal direction is greater than, equal to, or less than 90 degrees.

[0144] 13 to 16, a display device according to an embodiment of the fourth aspect is configured to generate at least two layers of virtual images at unequal distances from a user, the at least two layers of virtual images including a first virtual image, the first virtual image including a left virtual image portion and / or a right virtual image portion, and an included angle between the first virtual image and the horizontal direction being greater than, equal to, or less than 90 degrees.

[0145] For example, the at least two layers of virtual images further include a second virtual image, wherein the distance from the proximal end of the first virtual image to the eyebox region of the display device is less than the distance from the proximal end of the second virtual image to the eyebox region, and the included angle between the second virtual image and the horizontal direction is greater than, equal to, or less than 90 degrees.

[0146] For example, the display device is configured to generate at least one virtual image, the at least one virtual image including a naked-eye 3D virtual image, and the display device is configured so that the user views the at least one naked-eye 3D virtual image through the at least one virtual image.

[0147] For example, the at least two virtual images further include a third virtual image, the third virtual image being a naked-eye 3D virtual image, and the display device is configured to allow the user to view at least one naked-eye 3D virtual image through the at least one virtual image. For example, the third virtual image includes a left-eye virtual image and a right-eye virtual image, and the image source assembly included in the display device is configured to emit left-eye light rays corresponding to the left-eye virtual image to be received by the left eye of the same user and right-eye light rays corresponding to the right-eye virtual image to be received by the right eye of the same user, where the left-eye light rays allow the user to see the left-eye virtual image and the right-eye light rays allow the user to see the right-eye virtual image.

[0148] The left eye virtual image area and the right eye virtual image area are located on the same imaging plane (i.e., the imaging distance is basically equal), and the left eye light rays and the right eye light rays are emitted from the same image source, so that the user's left eye sees the pattern of the left eye virtual image area, and the right eye sees the pattern of the right eye virtual image area. According to the structure of the human eye and the visual processing principle of the brain, the user can see a 3D effect, which may be called naked eye 3D.

[0149] 13, the two-layer virtual images finally formed are a U-shaped virtual image and a vertical virtual image, and the display device includes two image source displays 110, which are respectively an arc-shaped image source 111 and a planar image source 112. The light rays emitted from the arc-shaped image source 111 and the planar image source 112 form the U-shaped virtual image and the vertical virtual image, respectively.

[0150] 13, the two virtual images have different imaging distances, with the U-shaped virtual image being closer to the imaging window 300 than the vertical virtual image. In other embodiments not shown, the U-shaped virtual image may be configured to be farther from the windshield than the vertical virtual image, thereby allowing the virtual image to blend more easily with objects in the surrounding environment and improving the fit of the imaging. Of course, in other embodiments, the imaging distances of the U-shaped virtual image and the vertical virtual image may be the same or partially the same.

[0151] For example, as shown in FIG. 14 , the display device includes three image source displays 110, each of which is an arc-shaped image source 111, a planar image source 112, and a planar image source 113. The arc-shaped image source 111, the planar image source 112, and the planar image source 113 form a U-shaped virtual image and two vertical virtual images, respectively. For example, the three virtual images shown in the drawing have different imaging distances, and the U-shaped virtual image is located between the two vertical virtual images. In other examples, the U-shaped virtual image may be located at the farthest end or the nearest end. In other examples, the imaging distances of the three virtual images may be the same or some of them may be the same. In addition, the types of image sources in the three image source displays 110 may be flexibly configured according to needs and are not limited to a configuration in which the three image source displays 110 include the arc-shaped image source 111.

[0152] For example, the planar image source 112 and the planar image source 113 may be configured to be installed side by side, or may be configured as independent image source structures installed at different positions.

[0153] Furthermore, the number of image sources included in the image source display 110 may be greater, for example, five, six, etc., and the present application is not specifically limited thereto.

[0154] In some other embodiments, the arc-shaped image source 111 may have a curved surface with multiple U-shaped structures. In some other embodiments, the image source display 110 is not limited to a specific number of image sources being arc-shaped screens, that is, in the case of multiple image sources, at least two image sources may be arc-shaped screens to form multiple arc-shaped virtual images. Of course, in some other embodiments, multiple arc-shaped virtual images can be realized by at least two U-shaped glass blocks.

[0155] For example, in some embodiments, the image source display 110 includes two arc-shaped image sources, a first arc-shaped image source and a second arc-shaped image source, respectively, and light rays emitted from the first arc-shaped image source and the second arc-shaped image source form two U-shaped virtual images, respectively. The two U-shaped virtual images may be spaced apart, with one farther away and the other closer, or may be at least partially transitioned and connected. Furthermore, there may be more arc-shaped image sources, with each arc-shaped image source forming a plurality of U-shaped virtual images.

[0156] For example, as shown in FIG. 15, an image source display 110 includes an arc-shaped image source 111, a planar image source 112, and a semi-transmissive element 60 installed in the optical paths of the arc-shaped image source 111 and the planar image source 112, where a light ray A emitted from the arc-shaped image source 111 passes through the semi-transmissive element 60, and a light ray B emitted from the planar image source 112 is irradiated on and reflected by the semi-transmissive element 60, thereby forming a light ray AB, where the light ray A finally forms a U-shaped virtual image A', and the light ray B forms a vertical virtual image B', and the inclined virtual image A' and the vertical virtual image B' are set coaxially.

[0157] Regarding coaxiality, if the center lines of the U-shaped virtual image A' and the vertical virtual image B' overlap or nearly overlap (the included angle between the two center lines is within a set range, for example, the included angle is within a range of 10 degrees), the two virtual images are said to be coaxial; furthermore, if the projections of the small virtual image in the direction of the large virtual image are all within the range of the large virtual image, it is also called a coaxial virtual image.

[0158] For example, as shown in FIG. 16, an image source display 110 includes an arc-shaped image source 111, a planar image source 112, and a planar image source 113. As shown in FIG. 16, a semi-transmissive element 60 is installed in the optical path of the arc-shaped image source 111 and the planar image source 112. A light ray A emitted from the arc-shaped image source 111 passes through the semi-transmissive element 60, and a light ray B emitted from the planar image source 112 is irradiated on the semi-transmissive element 60 and reflected, thereby forming a light ray AB. The light ray A finally forms a U-shaped virtual image A', and the light ray B forms a vertical virtual image B'. The U-shaped virtual image A' and the vertical virtual image B' are coaxially arranged. The imaging distances of the vertical virtual image C' formed by the planar image source 113 and the U-shaped virtual image A' or the vertical virtual image B' may be the same or different. The coaxial display method can reduce the use of planar reflectors and optimize the spatial structure.

[0159] For example, a U-shaped refractive element (e.g., a U-shaped glass block) can be installed in the optical path of the image source display 110. The U-shaped refractive element can add an optical path to the light beam passing through it, and at this time, for this portion of the light beam, the equivalent object distance changes, and the imaging distance also changes accordingly, ultimately realizing a U-shaped virtual image. The arc-shaped screen can realize a U-shaped virtual image, and the glass block can realize a U-shaped virtual image. In some embodiments, the two can be combined.

[0160] For example, a circular arc screen and a U-shaped glass block can cooperate to form a U-shaped virtual image, or a tiling virtual image can be formed. For example, a circular arc screen and a U-shaped glass block can be used to form U-shaped virtual images with different imaging distances.

[0161] For example, at least one of the positions, sizes, degrees of inclination, and screen contents of the multiple virtual images may be different.

[0162] FIG. 17 is a structural schematic diagram of a display device according to another embodiment of the present invention.

[0163] 17, naked-eye 3D imaging will be described by taking as an example an image source display 110 of a display device including eight columns of image source units, two first shading units, and two second shading units. There is a distance d2 between the light barrier and the image source display 110, and both the first shading units 410 and the second shading units 420 can block light rays. Therefore, the second light rays emitted from some image source units (R1, R2, R3, R4 shown in FIG. 3) cannot reach the left eye region, and only the first light rays emitted from the image source units L1, L2, L3, L4 can be seen in the left eye region. Similarly, only the second light rays emitted from the image source units R1, R2, R3, R4 can be seen in the right eye region. The first shading unit 410 allows the first light beams emitted from the image source units L1, L2, L3, and L4 to be irradiated onto a first designated area (the left eye area shown in FIG. 3), and the second shading unit 420 allows the second light beams emitted from the image source units R1, R2, R3, and R4 to be irradiated onto a second designated area (the right eye area shown in FIG. 3), thereby separating the visible virtual images for the left and right eyes and further realizing stereoscopic imaging. For example, the sizes of the first shading unit 410 and the second shading unit 420 and the positions of the first shading unit 410 and the second shading unit 420 can be obtained by precise calculation, thereby ensuring imaging at a specific position.

[0164] FIG. 18 is a structural schematic diagram of a display device according to another embodiment of the present invention.

[0165] For example, when a display device controls the direction of a light beam emitted from a light source, it usually uses a light-opaque case, such as a hollow reflecting cup, installed around the light source to control the direction of the light beam. However, controlling the direction of the light beam using a light-opaque case reduces the uniformity of the virtual image, making it difficult to ensure image quality, and the light-opaque case also affects the heat dissipation of the light source.

[0166] The image source display 110 of the display device of the present application includes a light source section having a plurality of light sources 114 and a light-transmitting collimating section 115, wherein light emitted from the plurality of light sources 114 passes through the light-transmitting collimating section 115, and at least some of the plurality of light sources 114 are not provided with a reflector cup for reflecting the light emitted from the light source 114. And / or, at least a continuous gas medium layer is included between the light source layer on which the plurality of light sources 114 are located and the collimating layer on which the light-transmitting collimating section 115 is located. As can be understood herein, the image source display 110 includes a light source section and a light-transmitting collimating section 115, and the light source section has a plurality of light sources 114.

[0167] For example, light emitted from the plurality of light sources 114 is directly incident on the light-transmitting collimating portion 115 .

[0168] 18 to 20, the image source display 110 includes a direction control module 116, which includes a light-transmitting collimating section 115 and a plurality of transparent light-collecting sections 117. Light emitted from the light sources 114 corresponding to the plurality of transparent light-collecting sections 117 passes through the plurality of transparent light-collecting sections 117 and then passes through the light-transmitting collimating section 115. The region between the light-transmitting collimating section 115 and the plurality of transparent light-collecting sections 117 is at least a continuous gas medium layer. Therefore, at least some of the light sources 114 do not need to be provided with a reflective cup, which is advantageous for heat dissipation of the light sources 114.

[0169] For example, the gas medium layer is adjacent to the collimating layer and the light source layer, so that light emitted from the light source 114 passes through the gas medium layer and then directly enters the collimating element, or the gas medium layer is adjacent to the focusing layer and the collimating layer, which includes a plurality of transparent focusing portions 117, so that light emitted from the light source 114 passes through the transparent focusing portions 117 and the gas medium layer and then directly enters the collimating element.

[0170] For example, the gas medium layer may be air or another gas.

[0171] For example, the center of a collimating element and the center of the corresponding light source 114 are aligned.

[0172] For example, the collimating element is a convex lens or a Fresnel lens, and the collimating element can reduce the divergence angle of the light rays passing through it.

[0173] For example, the light emitted from the plurality of transparent light-collecting portions 117 directly enters the light-transmitting collimating portion 115 .

[0174] For example, the plurality of transparent light collecting portions 117 have grooves that accommodate the corresponding light sources 114 .

[0175] For example, the transparent light collecting portions 117 are in close contact with the corresponding light sources 114 .

[0176] For example, the light exit surfaces of the plurality of transparent light collecting portions 117 are convex surfaces that protrude in a direction away from the corresponding light sources 114 .

[0177] For example, at least one of the plurality of transparent light-collecting portions 117 is a plano-convex lens.

[0178] 19 and 20 , the light output surface of the transparent light-collecting part 117 may include at least a first curved light output surface, and the light source 114 may be disposed at the focal point of the first curved light output surface of the transparent light-collecting part 117. The light source 114 may also be disposed inside the transparent light-collecting part 117.

[0179] For example, the light source 114 is embedded inside the transparent light collecting portion 117 and is located at the middle position of the lower surface of the transparent light collecting portion 117. The transparent light collecting portion 117 may be a plano-convex lens having one flat surface and one convex surface.

[0180] In some embodiments, based on any of the embodiments in the above first to fourth aspects, the light output surface of the transparent light-collecting portion 117 is a protruding paraboloid, and the light source 114 is fitted inside the transparent light-collecting portion 117 and is located at the focus of the paraboloid; alternatively, the light output surface of the transparent light-collecting portion 117 is a protruding arc-shaped surface, and the light source 114 is fitted inside the transparent light-collecting portion 117 and is located at the focus of the arc-shaped surface; alternatively, the light output surface of the transparent light-collecting portion 117 includes a first light-output curved surface and a second light-output side surface, and the first light-output curved surface is a protruding paraboloid, and the light source 114 is fitted inside the transparent light-collecting portion and is located at the focus of the paraboloid; alternatively, the light output surface of the transparent light-collecting portion 117 includes a first light-output curved surface and a second light-output side surface, and the first light-output curved surface is a protruding arc-shaped surface, and the light source 114 is fitted inside the transparent light-collecting portion and is located at the focus of the arc-shaped surface.

[0181] For example, the lower surface of the transparent light concentrating unit 117 is a flat surface that is in close contact with the substrate, and the upper surface is a convex surface that is aligned with the light output direction of the light source 114. The transparent light concentrating unit 117 is located in the light output direction of the light source 114. The transparent light concentrating unit 117 is configured to converge the light beam emitted from the light source 114 to obtain a first convergent light beam and emit the first convergent light beam to the light-transmitting collimating unit 115, which is configured to further converge the incident first convergent light beam to obtain a second convergent light beam and emit the second convergent light beam to the light beam concentrating unit 118. By concentrating the light beam emitted from the light source 114 using the transparent light concentrating unit 117 and the light-transmitting collimating unit 115, the utilization efficiency of the light beam emitted from the light source 114 can be further improved.

[0182] FIG. 21 is a structural schematic diagram of a display device according to another embodiment of the present invention.

[0183] For example, image source assembly 100 typically forms an image using light rays in a target wavelength band, which includes at least one spectral band. For example, image source assembly 100 can form an image using light rays in three wavelength bands, RGB (red, green, and blue). When image source assembly 100 includes a liquid crystal panel, image source assembly 100 can emit light rays with a specific polarization characteristic, for example, light rays with a second polarization characteristic. Semi-transmissive film 31 can reflect light rays with the second polarization characteristic within the target wavelength band. Semi-transmissive film 31 has high reflectivity for light rays with the second polarization characteristic in at least one spectral band and high transmittance for other light rays, for example, high transmittance for light rays with a first polarization characteristic within the target wavelength band and other light rays outside the target wavelength band (including light rays with the first polarization characteristic and light rays with the second polarization characteristic). The semi-transparent film 31 can reflect most of the light emitted from the image source assembly 100 to the observation area, and also allow most of the external ambient light to enter the observation area. For example, most of the light rays with the first polarization characteristic in most wavelength bands can pass through the semi-transparent film 31 and reach the observation area, so that the user can normally see the outside world.

[0184] For example, the target wavelength range may include at least one spectral band, for example, the full width at half maximum of the at least one spectral band may be less than or equal to 60 nm.

[0185] 21 , assuming that the light beam with the first polarization characteristic is a P-polarized light beam (hereinafter referred to as P-polarized light) and the light beam with the second polarization characteristic is an S-polarized light beam (hereinafter referred to as S-polarized light), the light guide device can emit light beam 410 to image source assembly 100, where light beam 410 is P-polarized light. If the light beam emitted from image source assembly 100 is an RGB light beam, light beam 410 is RGB P-polarized light. Image source assembly 100 can convert light beam 410 into light beam 420, where light beam 420 is an imaging light beam and is RGB S-polarized light. Semi-transmitting film 31 can reflect the RGB S-polarized light and transmit other light beams. For example, the semi-transparent film 31 has high reflectance (e.g., transmittance of about 70% to 90%) for red light, green light, and blue light in the S-polarized state, but high transmittance (e.g., transmittance of about 70% to 90%) for light in other wavelength bands and red light, green light, and blue light in the P-polarized state.

[0186] As shown in FIG. 21 , when the image source assembly 100 emits RGB light 420 in the S-polarized state, the semi-transmissive film 31 has a high reflectivity for the light 420. Therefore, most of the light 420 emitted from the image source assembly 100 can be reflected by the semi-transmissive film 31 as light 430, and the light 430 is reflected to the observation area, improving the brightness of the image. In addition, most of the light rays of the external environment light 310 can be transmitted normally, without affecting the observation of the external environment. For example, the semi-transmissive film 31 can mainly emit light rays of the target wavelength band into the external environment, e.g., For example, there are traffic lights and the like that emit red light and green light, and the wavelength band of the light emitted from such a device is close to or overlaps with the target wavelength band such as RGB. Of the light emitted from the traffic light, some light rays 311 having a second polarization characteristic (e.g., S polarization state) are reflected by the reflective film 31, but some light rays 312 having a first polarization characteristic (e.g., P polarization state) can still pass through the reflective film 31 with high transmittance, so that a user in the observation area can still normally see the light emitted from the traffic light, etc. For example, the light rays 312 may further include light rays in wavelength bands other than the RGB wavelength band.

[0187] The first polarization characteristic may be an S-polarized state, or may be other polarization states such as circular polarization or elliptical polarization, and this embodiment is not limited thereto. The RGB are abbreviations for red light, green light, and blue light, respectively. For example, the red light, green light, and blue light may be continuously distributed within a wavelength band, or discontinuously distributed, and for example, the full width at half maximum of the wavelength of the light beam may be 60 nm or less, the peak position of the wavelength of the blue light may be within the range of 410 nm to 480 nm, the peak position of the wavelength of the green light may be within the range of 500 nm to 565 nm, and the peak position of the wavelength of the red light may be within the range of 590 nm to 690 nm.

[0188] For example, the distance range between the virtual image and the observation area is 2 to 20 m. As can be understood, the coverage range of the display content of the virtual image may be within a range of 2 to 20 m from the observation area. For example, the coverage range of the display content of the virtual image may be within a range of 2 to 6 meters from the observation area, for example, the coverage range of the display content of the virtual image may be within a range of 2 to 5 meters, for example, the coverage range of the display content of the virtual image may be within a range of 2 to 4 meters, and / or the coverage range of the display content of the virtual image may be within a range of 10 to 20 meters from the observation area, for example, the coverage range of the display content of the virtual image may be within a range of 12 to 20 meters, for example, the coverage range of the display content of the virtual image may be within a range of 14 to 20 meters. For example, the observation area may be a certain area where the user's eyes are located, such as an area where the user's eyes are located and where the image displayed by the display device can be viewed, and may be, for example, a planar area or a three-dimensional area.

[0189] The foregoing has described and construed embodiments of the present application in detail. It should be clearly understood that while the present application has described how to make and use particular embodiments, the present application is not limited to the details of any of these examples. On the contrary, these principles can be applied to many other embodiments based on the teachings of the present disclosure.

[0190] It should be noted that the above are merely illustrative examples of the present disclosure and are not intended to limit the present disclosure. Although the present disclosure has been described in detail with reference to the above examples, those skilled in the art may still modify the technical solutions described in the above examples or make equivalent substitutions for some of the technical features thereof. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present disclosure shall fall within the protection scope of the present disclosure.

Claims

1. A display device configured to allow a user to view a virtual image through an eyebox region of the display device; A display device in which the virtual image includes at least a left virtual image portion and / or a right virtual image portion.

2. A display device configured to allow a user to observe a virtual image through an eyebox area of ​​the display device, the virtual image including at least a first virtual image portion and a second virtual image portion whose extension directions of the image plane intersect, the first virtual image portion being connected to the second virtual image portion.

3. A display device configured to allow a user to observe a virtual image through an eyebox region of the display device, the virtual image including at least a first virtual image portion and a second virtual image portion whose extension directions of the image plane intersect, and the light rays for forming the first virtual image portion and the second virtual image portion are from the same image source display included in the display device.

4. The virtual image is a continuous virtual image, or the virtual image includes a plurality of virtual image portions whose extension directions of the image plane intersect, and at least some of the adjacent virtual image portions are connected, and / or The display device of any one of claims 1 to 3, wherein the display device includes an image source assembly having an image source display, the image source display including a first display area and a second display area, wherein image light rays emitted from the first display area correspond to the left virtual image portion and / or the right virtual image portion, and image light rays emitted from the second display area correspond to other portions of the virtual image.

5. the display device includes an image source assembly having an image source display; the image source display is a curved image source display; and / or The display device of any one of claims 1 to 4, wherein the image source assembly further includes a refractive element configured to perform a refractive process on the image light rays that are incident on the refractive element after being emitted from the image source display.

6. when the image source display is the curved image source display, a surface shape of the curved image source display matches an image surface shape of at least a portion of the virtual image; 6. The display device of claim 5, wherein when the image source assembly includes the refractive member, a surface shape of the light exit surface of at least a portion of the refractive member matches an image surface shape of at least a portion of the virtual image.

7. 6. The display device according to claim 5, wherein corresponding positions in the virtual image of image light rays on the same contour line incident on the refractive element are on the same circumference of a polar coordinate system, the polar coordinate system having a set reference point as its origin.

8. 8. The display device of claim 1, further comprising a magnification assembly, the magnification assembly comprising one or more of a curved reflector, a convex lens, a diffractive waveguide, a geometric waveguide, and a HOE windshield.

9. 9. The display device of claim 8, wherein the magnifying assembly includes a curved zoom mirror, the surface shape of the curved zoom mirror matching the image surface shape of at least a portion of the virtual image.

10. The screen displayed on the left virtual image unit includes information related to a left external point of interest located on the left side of the driving route, and / or The display device according to any one of claims 1 to 9, wherein the screen displayed on the right virtual image section includes information related to points of interest on the right side outside the vehicle located on the right side of the driving route.

11. Among the different positions of the virtual image, the larger the angle of the polar coordinates of the position, the closer the corresponding part of the virtual image is to the eye box area; and / or 11. The display device according to claim 1, wherein, among different positions of the virtual image, the larger the depression angle or elevation angle of a position, the closer the corresponding portion of the virtual image is to the eyebox region.

12. 12. The display device according to claim 1, wherein a connecting portion of at least a part of the virtual image portions of the virtual image is a right angle or a fillet.

13. 13. The display device according to claim 1, wherein the image surface shape of the left virtual image portion and / or the right virtual image portion is curved.

14. the virtual image includes at least a U-shaped virtual image portion having a U-shaped cross section, the U-shaped virtual image portion including the left virtual image portion and the right virtual image portion, and the U-shaped virtual image portion further includes one of a front-lower sub-virtual image portion, a front sub-virtual image portion, and a front-upper sub-virtual image portion; and / or The display device according to any one of claims 1 to 13, wherein the virtual image includes at least an L-shaped virtual image portion having an L-shaped cross section, the L-shaped virtual image portion including the left side virtual image portion or the right side virtual image portion, and the L-shaped virtual image portion further includes one of a front lower sub-virtual image portion, a front sub-virtual image portion, and a front upper sub-virtual image portion.

15. The left virtual image portion and / or the right virtual image portion are perpendicular to the ground or inclined with respect to the ground, or The display device of any one of claims 1 to 14, wherein the virtual image further includes a front sub-virtual image portion, the front sub-virtual image portion including one or more of a front lower sub-virtual image portion, a front sub-virtual image portion, and a front upper sub-virtual image portion, and one or more of the left side virtual image portion, the right side virtual image portion, the front lower sub-virtual image portion, the front sub-virtual image portion, and the front upper sub-virtual image portion are perpendicular to the ground or inclined with respect to the ground, or the front lower sub-virtual image portion is laid flat on the ground or parallel to the ground.

16. the virtual image further includes a front sub-virtual image portion, the front sub-virtual image portion including one or more of a front lower sub-virtual image portion, a front sub-virtual image portion, and a front upper sub-virtual image portion; A display device according to any one of claims 1 to 15, wherein adjacent sub-virtual image sections among the front sub-virtual image sections are not connected, or any adjacent sub-virtual image sections among the front sub-virtual image sections are connected, or some adjacent sub-virtual image sections among the front sub-virtual image sections are connected, and / or the left side virtual image section is connected to at least some of its adjacent sub-virtual image sections, and / or the right side virtual image section is connected to at least some of its adjacent sub-virtual image sections.

17. The display device is configured to generate at least two virtual images at different times or at the same time, the at least two virtual images including a first virtual image and a second virtual image, and the first virtual image includes the left virtual image portion and / or the right virtual image portion. The display device of any one of claims 1, 4 to 7, and 9.

18. a distance from a proximal end of the first virtual image to an eyebox region of the display device is shorter than a distance from a proximal end of the second virtual image to the eyebox region; 18. The display device of claim 17, wherein an included angle between the first virtual image and the horizontal direction is greater than, equal to, or less than 90 degrees, and an included angle between the second virtual image and the horizontal direction is greater than, equal to, or less than 90 degrees.

19. 19. The display device of claim 1, wherein the display device is configured to generate at least one virtual image, the at least one virtual image comprising a naked-eye 3D virtual image, and the display device is configured to allow a user to view the at least one naked-eye 3D virtual image through the at least one virtual image.

20. The image source assembly of the display device includes a light source section having a plurality of light sources and a light-transmitting collimating section, and light emitted from the plurality of light sources passes through the light-transmitting collimating section; A display device described in any one of claims 4 to 7, wherein at least some of the plurality of light sources do not have a reflector cup for reflecting light emitted from the light source, and / or at least a continuous gas medium layer is included between a light source layer in which the plurality of light sources are located and a collimator layer in which the light-transmitting collimator section is located.

21. The light emitted from the light source is directly incident on the light-transmitting collimating portion, or 21. The display device of claim 20, wherein the image source assembly includes a direction control module, the direction control module including the light-transmitting collimating section and a plurality of transparent focusing sections, wherein light emitted from a light source corresponding to the plurality of transparent focusing sections passes through the light-transmitting collimating section after passing through the plurality of transparent focusing sections, and wherein the region between the light-transmitting collimating section and the plurality of transparent focusing sections is at least a continuous gas medium layer.

22. The light emitted from the plurality of transparent light-collecting portions is directly incident on the light-transmitting collimating portion, and / or the plurality of transparent light-collecting portions have grooves for receiving corresponding light sources; and / or the transparent light-collecting portions are in close contact with the corresponding light sources; and / or The light exit surfaces of the transparent light-collecting elements are convex surfaces that protrude away from the corresponding light sources; and / or The display device according to claim 21 , wherein at least one of the plurality of transparent light-collecting portions is a plano-convex lens.

23. The light output surfaces of the transparent light-collecting parts are protruding paraboloids, and the light source is embedded in the transparent light-collecting parts and positioned at the focus of the paraboloid; or The light exit surfaces of the transparent light-collecting parts are protruding arc surfaces, and the light source is embedded in the transparent light-collecting parts and positioned at the focal point of the arc surfaces; or The light output surfaces of the transparent light-collecting parts include a first light output curved surface and a second light output side surface, the first light output curved surface is a protruding paraboloid, and the light source is embedded in the transparent light-collecting parts and positioned at a focus of the paraboloid; or 23. The display device of claim 21 or 22, wherein the light exit surfaces of the plurality of transparent light-collecting sections include a first light-exiting curved surface and a second light-exiting side surface, the first light-exiting curved surface is a protruding arc surface, and the light source is embedded inside the plurality of transparent light-collecting sections and positioned at a focus of the arc surface.

24. an image source assembly configured to emit an image beam; a refractive element configured to perform a refractive process on the incident image light beam to obtain a refracted light beam; The display device according to any one of claims 1 to 4, further comprising: a magnification assembly configured to magnify incident refracted light rays to obtain magnified light rays for forming at least a portion of the virtual image.

25. The display device according to claim 24 , wherein the refractive member includes one or more sub-refractive members, and / or the light-emitting surface of at least a part of the refractive member includes a curved surface and / or a flat surface.

26. 26. The display device according to claim 24, wherein the optical path in the refractive member of a light ray corresponding to a refracted light ray emitted from at least a part of the light exit surface of the refractive member gradually changes.

27. 26. The display device according to claim 24, wherein the thickness and / or refractive index of the refractive member gradually changes along a direction perpendicular to the light incident surface of the refractive member.

28. 26. The display device according to claim 24 or 25, wherein the incident surface of the refractive element is placed in close contact with the image source or at a distance therefrom, and when the incident surface of the refractive element is placed at a distance from the image source, the distance is 10 mm or more.

29. an image source assembly including a curved image source display, the image source display configured to emit image light; The display device according to any one of claims 1 to 3, further comprising: a magnification assembly configured to magnify incident image light rays to obtain magnified light rays for forming at least a portion of the virtual image.

30. 30. The display device of claim 29, wherein the light exit surface of at least a portion of the curved image source is curved.

31. 30. The display device of claim 29, wherein the light output surface of the curved image source is an arc-shaped surface, and the depth of field of the curved image source is 0.5 to 1.5 cm.

32. 30. The display device of claim 29, wherein the curved image source comprises at least one of a micron-order LED display, a millimeter-order LED display, a silicon-based liquid crystal display, a digital light processor, and a micro-electro-mechanical system display.

33. 4. The display device according to claim 1, wherein the distance between the virtual image and the observation area is in the range of 2 to 20 m.

34. An image source device for use in a display device according to any one of claims 24 to 28, said image source device comprising: said image source assembly; and said refractive member; Alternatively, the image source device is an image source device for use in a display device according to any one of claims 29 to 33, and the image source device comprises the curved image source display.

35. 34. The display device of claim 1, wherein the display device is a head-up display device, and the display device includes an imaging window, the imaging window configured to reflect incident light rays into the eyebox region.

36. A transport device comprising a display device according to any one of claims 1 to 33.

37. A display method comprising: a step of projecting an imaging light beam onto an imaging window of a display device, whereby a user observes a virtual image in a field of view through an eyebox region of the display device; A display method in which the virtual image includes at least a left virtual image portion and / or a right virtual image portion, and / or the virtual image includes at least a first virtual image portion and a second virtual image portion whose extension directions of the image plane intersect, and the first virtual image portion is connected to the second virtual image portion.

Images