CN117518464A

CN117518464A - Display device, image source device, traffic equipment and display method

Info

Publication number: CN117518464A
Application number: CN202210901853.7A
Authority: CN
Inventors: 吴慧军; 徐俊峰
Original assignee: Futurus Technology Co Ltd
Current assignee: Futurus Technology Co Ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2024-02-06

Abstract

The application discloses a display device, a head-up display system, a traffic device and a display method, wherein the display device is configured to enable a user to observe a virtual image through an eye box area of the display device, and the virtual image at least comprises a left virtual image part and/or a right virtual image part. The display device of the application can improve the fusion effect of the virtual image and the environmental object.

Description

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

Technical Field

The application relates to the technical field of head-up displays, in particular to a display device, an image source device, traffic equipment and a display method.

Background

The HUD (head up display) is also called head up display. Through finally projection the light that the image source of HUD sent on imaging window (imaging plate of afterloading or the windscreen etc. of vehicle), the user need not the low head just can directly see new line display device's virtual image to can improve user experience. For example, in some cases, the head-up display device can avoid distraction caused by a user looking down at the dashboard during driving, so as to improve driving safety factor and bring better driving experience.

In the background section, the foregoing information is disclosed only for enhancement of understanding of the background of the application and therefore it may not constitute prior art information that is already known to a person of ordinary skill in the art.

Disclosure of Invention

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

In a first aspect, at least one embodiment of the present disclosure provides a display device configured to enable a user to observe a virtual image through an eye box region of the display device, the virtual image including at least a left side virtual image portion and/or a right side virtual image portion.

For example, the image surfaces of the left virtual image portion and/or the right virtual image portion may be flat surfaces or curved surfaces.

In a second aspect, at least one embodiment of the present disclosure provides a display device configured to enable a user to observe a virtual image through an eye box region of the display device, the virtual image including at least a first virtual image portion and a second virtual image portion intersecting an image plane extending direction, the first virtual image portion and the second virtual image portion being connected.

In a third aspect, at least one embodiment of the present disclosure provides a display device configured to enable a user to observe a virtual image through an eye box region of the display device, where the virtual image includes at least a first virtual image portion and a second virtual image portion intersecting an image plane extending direction, 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.

In a fourth aspect, at least one embodiment of the present disclosure provides an image source device that is an image source device for use in the display device of any one of the first to third aspects of the present disclosure, and that includes the image source assembly and the refractive element; alternatively, the image source device is an image source device for the display device according to any one of the first to third aspects of the present disclosure, and the image source device includes the curved image source display.

In a fifth aspect, at least one embodiment of the present disclosure provides a traffic device, including a display device as set forth in any one of the embodiments of the first, second, and third aspects, or an image source device as set forth in the fourth aspect.

In a sixth aspect, at least one embodiment of the present disclosure provides a display method, including: imaging light is projected toward an imaging window of a display device to cause a user to view a virtual image in a field of view through an eye box region of the display device. Wherein the virtual image comprises at least a left side virtual image part and/or a right side virtual image part; and/or the virtual image at least comprises a first virtual image part and a second virtual image part which are intersected in the extending direction of the image plane, and the first virtual image part is connected with the second virtual image part.

For example, the display method may be applied to the display device according to any one of the first to third aspects of the present application, and accordingly, the relevant description in the display device provided by the first to third aspects of the present disclosure is also applicable to the display method provided by the present disclosure.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the virtual images are continuous virtual images, or the virtual images include a plurality of virtual image portions intersecting in an image plane extending direction and at least part of the adjacent virtual image portions are connected; and/or the display device comprises an image source assembly with an image source display, the image source display comprises a first display area and a second display area, the image light rays emitted from the first display area correspond to the left virtual image part and/or the right virtual image part, and the image light rays emitted from the second display area correspond to the rest of the virtual image.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, the display device comprises an image source assembly having an image source display, wherein the image source display is a curved image source display; and/or the image source component further comprises a refraction piece, wherein the refraction piece is configured to refract the image light rays entering the refraction piece after exiting from the image source display.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, in the case where the image source display is the curved image source display, the shape of the curved image source display matches the shape of the image of at least part of the virtual image; in the case that the image source assembly includes the refractive element, an optical path of light rays exiting from at least a portion of the light exit surface of the refractive element in the refractive element matches an image surface of at least a portion of the virtual image.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the positions of the image light rays incident on the same contour of the refractive element on the virtual image correspond to the same circumference of a polar coordinate system having a set reference point as an origin.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the display device further comprises a magnifying assembly comprising one or more of a curved mirror, a convex lens, a diffractive waveguide, and a geometric waveguide, an HOE windshield.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, the magnification assembly comprises a zoom curved mirror having a shape that matches an image shape of at least a portion of the virtual image.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, the virtual image displayed by the left virtual image portion includes information related to a left external object of interest located to the left of the travel route; and/or the virtual image displayed by the right virtual image part comprises information related to a right external object of interest positioned on the right side of the travel route.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, a position of the virtual image that is greater in polar angle among different positions corresponds to a portion of the virtual image that is closer to the eye-box region; and/or, the virtual image part corresponding to the position with larger lower visual angle or lower visual angle in different positions of the virtual image is closer to the eye box area.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the disclosure, the connected portions of at least some of the virtual image portions are right-angled or rounded.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the image plane shape of the left and/or right virtual image portions is curved.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the virtual image includes at least a U-shaped virtual image portion having a U-shaped cross section, the U-shaped virtual image portion includes the left side virtual image portion and the right side 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 virtual image at least comprises an L-shaped virtual image part with an L-shaped section, the L-shaped virtual image part comprises the left side virtual image part or the right side virtual image part, and the L-shaped virtual image part further comprises one of a front lower sub-virtual image part, a front sub-virtual image part and a front upper sub-virtual image part.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the left side virtual image portion and/or the right side virtual image portion is perpendicular to the ground or inclined to the ground; or, the virtual image further includes a front sub-virtual image portion, the front sub-virtual image portion includes 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, wherein 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 is perpendicular to or inclined to the ground, or the front lower sub-virtual image portion is tiled or parallel to the ground.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the virtual image further comprises a front sub-virtual image portion, the front sub-virtual image portion comprising 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, wherein adjacent ones of the front sub-virtual image portions are not connected, or any adjacent ones of the front sub-virtual image portions are connected, or adjacent ones of the front sub-virtual image portions are connected, and/or the left side virtual image portion is connected to at least a portion of the sub-virtual image portion adjacent thereto, and/or the right side virtual image portion is connected to at least a portion of the sub-virtual image portion adjacent thereto.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, 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 the left side virtual image portion and/or the right side virtual image portion.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, a distance from a proximal end of the first virtual image to an eye-box region of the display device is less than a distance from a proximal end of the second virtual image to the eye-box region; 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.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, the display device is configured to generate at least one virtual image comprising a naked eye 3D virtual image, the display device being configured to cause a user to see the at least one naked eye 3D virtual image through the at least one virtual image.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, the image source assembly of the display device includes a light source portion having a plurality of light sources and a light-transmitting collimating portion through which light emitted by the plurality of light sources is transmitted, wherein at least a portion of each of the plurality of light sources is not provided with a reflective cup for reflecting light emitted by the light source, and/or at least a continuous gas medium layer is included between a light source layer where the plurality of light sources are located and a collimating layer where the light-transmitting collimating portion is located.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, the light emitted by the light source is directly incident to the light-transmissive collimating part; or the image source assembly comprises a direction control module, the direction control module comprises the light-transmitting collimation part and a plurality of transparent light-gathering parts, light emitted by a light source corresponding to the transparent light-gathering parts is transmitted through the light-transmitting collimation part after transmitted through the transparent light-gathering parts, and at least a continuous gas medium layer is arranged in a region between the light-transmitting collimation part and the transparent light-gathering parts.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, light exiting the plurality of transparent light gathering portions is directly incident to the light transmissive collimation portion; and/or the plurality of transparent light gathering parts are provided with grooves for accommodating corresponding light sources; and/or the transparent light gathering parts are attached to the corresponding light sources; and/or the light emergent surfaces of the transparent light gathering parts are convex surfaces protruding along the direction away from the corresponding light sources; and/or at least one of the plurality of transparent light gathering parts is a plano-convex lens.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the light exit surfaces of the plurality of transparent light gathering portions are convex paraboloids, and the light source is embedded inside the plurality of transparent light gathering portions and located at a focal point of the paraboloids; or the light emitting surfaces of the transparent light gathering parts are raised arc surfaces, and the light source is embedded in the transparent light gathering parts and is positioned at the focus of the arc surfaces; or the light emitting surfaces of the transparent light gathering parts comprise a first light emitting curved surface and a second light emitting side surface, the first light emitting curved surface is a convex paraboloid, and the light source is embedded in the transparent light gathering parts and is positioned at the focus of the paraboloid; or the light emitting surfaces of the transparent light gathering parts comprise a first light emitting curved surface and a second light emitting side surface, the first light emitting curved surface is a convex arc surface, and the light source is embedded inside the transparent light gathering parts and is positioned at the focus of the arc surface.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, the display device includes: an image source assembly, the refractive element configured to emit image light; a refraction member configured to perform refraction processing on incident image light to obtain refracted light; and an amplifying assembly configured to amplify the incident refracted light rays to obtain amplified light rays for forming at least a portion of the virtual image.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the refractive element comprises one or more sub-refractive elements, and/or at least a portion of the light exit surface of the refractive element comprises a curved surface and/or a planar surface.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, an optical path length of a light ray corresponding to a refracted light ray exiting from at least a portion of the light exit surface of the refractive element in the refractive element gradually changes.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the thickness and/or refractive index of the refractive element gradually varies along a direction perpendicular to the light entrance surface of the refractive element.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the incident surface of the refractive element is disposed in contact with or spaced from the image source, and the distance between the incident surface of the refractive element and the image source is not less than 10mm.

For example, in some embodiments of the first, second, third, fourth, fifth and sixth aspects of the present disclosure, the display device includes: an image source assembly including a curved image source display configured to emit image light; and an amplifying assembly configured to amplify the incident image light to obtain amplified light for forming at least part of the virtual image.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, at least a portion of the light-emitting surface of the curved image source is curved.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the light exit surface of the curved image source is an arc surface, and the depth of field of the curved image source is 0.5-1.5cm.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the curved image source comprises at least one of a micro-scale LED display device, a millimeter-scale LED display device, a liquid crystal on silicon display device, a digital light processor, a microelectromechanical system display.

For example, in some embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present disclosure, the display device is a heads-up display device comprising an imaging window configured to reflect incident light rays to the eyebox area.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic diagram of the positions of virtual images and reference virtual images continuously zoomed along the column direction.

Fig. 2 shows a schematic representation of successive virtual images in different combinations.

Fig. 3 (a) -3 (j) respectively show schematic planar structure views of imaging of a display device according to an exemplary embodiment of the present application.

Fig. 4 illustrates a schematic structure of a display device according to some embodiments of the present application.

Fig. 5 shows a schematic structural view of a display device according to another embodiment of the present application.

Fig. 6 (a) shows a schematic structural view of a U-shaped virtual image concave rearward according to an embodiment of the present application. Fig. 6 (b) shows a schematic structural diagram of a single left virtual image according to an embodiment of the present application. Fig. 6 (c) shows a schematic structural diagram of a backward concave U-shaped virtual image compared with a planar virtual image according to an embodiment of the present application. Fig. 6 (d) shows a schematic structural view of a forwardly convex U-shaped virtual image according to an embodiment of the present application.

Fig. 7 (a) shows a schematic structural diagram of a U-shaped glass block according to some embodiments of the present application.

Fig. 7 (b) shows a schematic structural view of a U-shaped glass block according to another embodiment of the present application.

Fig. 8 shows a schematic structural view of a display device according to another embodiment of the present application.

Fig. 9 shows a schematic structural view of a display device according to another embodiment of the present application.

Fig. 10 (a) shows a schematic structural diagram of a curved image source according to some embodiments of the present application.

Fig. 10 (b) shows a schematic structural diagram of a curved image source according to another embodiment of the present application.

Fig. 11 shows a schematic structural view of a display device according to an embodiment of the third aspect of the present application.

Fig. 12 to 18 are schematic structural views showing a display device according to another embodiment of the present application.

Fig. 19 illustrates a schematic structural view of a transparent light gathering portion according to some embodiments of the present application.

Fig. 20 shows a schematic structural view of a transparent light condensing portion according to another embodiment of the present application.

Fig. 21 shows a schematic structural view of a display device according to another embodiment of the present application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, apparatus, etc. In these instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail.

The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.

The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

HUD (head up display) is an optical design that projects the light emitted from the image source onto an imaging window (imaging plate or windshield, etc.) through which the image light is projected onto the eye-box area, and the user can directly see the virtual image through the eye-box area without lowering the head. For example, the HUD can avoid distraction caused by the fact that a user looks at the instrument panel with low head in the driving process, improves driving safety coefficient, and can bring better driving experience.

For example, taking the HUD based on reflection imaging of a plane mirror and a curved mirror as an example, light rays emitted from an HUD image source are emitted after being reflected by the plane mirror and the curved mirror in sequence, and the emitted light rays can be reflected on a transparent imaging window and remain on one side of a cockpit to enter eyes of a user. For example, these rays entering the user's eye allow the user to see a virtual image presented by a virtual image displayed on the HUD source on the other side of the transparent imaging window. Meanwhile, because the imaging window is transparent, the ambient light on the other side of the imaging window can still be transmitted into eyes of a user through the imaging window, so that the user can see HUD imaging and meanwhile, the road condition outside the vehicle is not influenced in the driving process.

The inventor of the application notes in the study that under the condition that a user drives normally, the actual road condition observed by the user through the transparent imaging window is three-dimensional, but the traditional HUD generally forms a layer of vertical or approximately vertical virtual image, and the user can generate problems of visual errors (left and right eyes) and/or visual vergence (front and rear brain eye distance conflict) and the like in the process of observation, so that the user is easy to generate bad physical conditions such as fatigue, nausea and the like. For example, the reason for the occurrence of the vergence is that, in the case where the AR content and the environmental object are not aligned, there is a deviation between the actual physical distance when the eyes view the AR content and the perceived distance of the AR content perceived by the brain, and when this deviation is large, the user may be uncomfortable. In addition, because the virtual image frame is generally not good in attaching effect with external objects, a phenomenon that a stable and reliable indication effect is difficult to continuously provide for a user in the course of a journey exists.

In order 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, so as to improve the fusion effect of a virtual image and an environmental object, for example, to improve the problem of convergence of vision. For example, the embodiments of the present disclosure may make it easier to match the positions of the AR content and the environmental object (the matching may refer to the coincidence of the positions of the two, or may be relatively close, where the proximity of the distances is sufficient to satisfy the use requirement). For example, in some embodiments, the HUD provides at least one virtual image, some or all of which are continuously zoomed. For example, the imaging distance of part or all of the virtual images of the continuous zoom gradually changes, so that parallax and visual convergence problems can be reduced, for example, environmental objects with different distances can be adapted to display corresponding AR content. In some embodiments, by changing the optical path length of the light rays emitted from at least part of the screen in the standard optical path, at least part of the left and/or right side of the virtual image generates a correspondingly changed virtual image distance, thereby improving the problems of vision error and/or vision convergence. For example, the virtual images may be virtual images in a 3D continuous distribution (hereinafter referred to as continuous virtual images), and continuous zoom virtual images having at least one of left and/or right sides among the continuous virtual images are formed.

Some embodiments of the present disclosure provide a display device that may be a display device for a heads-up display or may be a display device for a non-heads-up display type.

For example, in the assembly process, a U-shaped virtual image can be formed by utilizing a mode such as U-shaped glass or an arc screen, so that the U-shaped virtual image is attached to an external object, and the indication effect of the head-up display device on a user is improved.

The preferred embodiments of the present application will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present application only and are not intended to limit the present application.

For example, as shown in FIG. 1, a standard light path is selected, where it is understood that the standard light path may be an imaginary light path, i.e., a virtual image is found or made perpendicular to the ground for the location of the corresponding screen. While the distance from at least some pixels in at least one column (or row) in the continuously zoomed virtual image, i.e., the virtual image, to the corresponding pixels in the reference virtual image, is continuously variable. The continuous zooming may be performed in one of the column direction and the row direction of the virtual image, or may be performed in combination of both directions.

While the formation of continuous virtual images by imaging may be a variety of situations.

As shown in fig. 2, from the viewpoint of virtual images, continuous virtual image formation can be divided into a left side virtual image portion (L), a right side virtual image portion (R), a front lower sub-virtual image portion (ground virtual image portion) (G), a front sub-virtual image portion (F), and a front upper sub-virtual image portion (sky virtual image portion) (T).

The combination of virtual images formed from successive virtual images may be in the following various cases:

1. l-single left side; r-single right side; LR-bilateral.

2. LG-left floor; the right side of RG-is added with ground.

3. LGR-floor on both left and right sides.

4. The left and right sides of LGR+F-are ground and are front.

5. Lgr+f+t-left/right+ground+front+sky.

Further, it may be configured as LGF, RGF, LGT, RGT or the like according to the use requirement of the imaging assembly.

Wherein, because the cockpit setting positions of different countries may be different, the virtual image of the single side can be suitable for different countries (left and right rudders), and the formed virtual image is continuously transited in the virtual image of the single side.

For example, in some examples, the display device can be configured to enable a user to observe a virtual image formed by the display device in the eye box region, the virtual image including at least a first virtual image portion and a second virtual image portion intersecting in an image plane extending direction, the first virtual image portion and the second virtual image portion being connected.

It will be appreciated that the region in which the observer needs to view the image, i.e. the eyebox region (eyebox), is preset according to the actual requirements, and the eyebox region refers to the region in which the eyes of the observer can see the image displayed by the display device, and may be a planar region or a stereoscopic region, for example.

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

Fig. 3 (a) -3 (j) respectively correspond to imaging diagrams of the display device, in which imaging states are L (single left side virtual image portion), R (single right side virtual image portion), l+g (left side plus front lower sub-virtual image portion), l+t (left side plus front upper sub-virtual image portion), l+r+g (left side plus front lower sub-virtual image portion), l+r+f (left side plus front sub-virtual image portion), l+r+t+g (left side plus front lower sub-virtual image portion and front upper sub-virtual image portion), l+r+t+g+f (left side plus front lower sub-virtual image portion+front+sky) virtual image connecting portions are circular arcs, l+r+t+g+f (left side plus ground side plus front sub-virtual image portion+front upper sub-virtual image portion), and the virtual image connecting portions are right angles.

Referring to fig. 3 (a) -3 (j), the display device of the example embodiment is configured to allow a user to observe a virtual image through an eye box 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). Namely, the left virtual image portion (L) and the right virtual image portion (R) in fig. 2.

For example, the display device of the present application is a heads-up display device, which further comprises an imaging window 300, the imaging window 300 being configured to reflect incident light rays to the eyebox area.

For example, the head-up display system of the application has a multi-layer imaging system, at least one layer is provided with a large-range imaging layer, namely, a large-range imaging HUD is arranged, and the arrangement mode of the large-range imaging HUD is matched with that of a visible area of a windshield, so that an image represented by light rays emitted by the large-range imaging HUD can cover the visible area of the windshield, for example, an image represented by light rays emitted by the large-range imaging 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 required. Compared with the traditional HUD based on the free-form surface reflector and smaller FOV in the related art, the arrangement mode of the plurality of light sources in the large-range imaging HUD is matched with the visible area of the windshield, so that the light rays emitted by the large-range imaging HUD can display an image covering the visible area of the windshield, the purpose of displaying the image at any position in the visible area of the windshield is achieved, richer content can be displayed through the large-range imaging HUD, and the use experience of the HUD is improved.

For example, at least one embodiment of the present disclosure also provides an image source device, which is an image source device for a display device, and which includes an image source assembly 100 and a refractive element 121; alternatively, the image source device is an image source device for a display device, and the image source device includes a curved image source display 110.

For example, at least one embodiment of the present disclosure provides a traffic device comprising the display device of any one of the embodiments.

For example, at least one embodiment of the present disclosure provides a display method including: projecting imaging light to an imaging window of a display device to enable a user to observe a virtual image in a visual field through an eye box area of the display device, wherein the virtual image at least comprises a left virtual image part and/or a right virtual image part; and/or the virtual image at least comprises a first virtual image part and a second virtual image part which are intersected in the extending direction of the image plane, and the first virtual image part is connected with the second virtual image part.

It will be appreciated herein that, for example, in some embodiments, the types of virtual images may be divided according to the position of the virtual image relative to the travel route in the user viewing effect, e.g., the virtual image may be a left-side virtual image located on the left side of the travel route, a right-side virtual image located on the right side of the travel route, or a front virtual image located between the left-side virtual image and the right-side virtual image.

For example, in some embodiments, the virtual image may include a virtual image portion; alternatively, the virtual image may include two virtual image portions, and the extending directions of the image planes where the two virtual image portions are located intersect or are substantially parallel; or the virtual image comprises at least three virtual image parts, and the extending directions of the image planes of at least partial adjacent virtual image parts are intersected.

For example, when the virtual image includes only the left-side 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 left virtual image portion (L) is entirely imaged as a non-stitched and/or continuously zoomed virtual image, so that the user solves the problems of parallax and/or vergence of the user by forming a continuously zoomed virtual image during the process of viewing the left virtual image portion (L).

Similarly, for example, the virtual image may be configured to include only the right-side virtual image portion (R), and the virtual image is 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 right virtual image portion (R) is entirely imaged as a non-spliced, continuously zoomed virtual image, so that the user can solve the problems of parallax and/or vergence of the user by forming a continuously zoomed virtual image in the process of viewing the left virtual image portion (L).

For example, the virtual images may be arranged to include both the left-side virtual image portion (L) and the right-side virtual image portion (R), and in this arrangement, the virtual images are also continuous virtual images. 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 entire imaging of the left virtual image portion (L) and the right virtual image portion (R) is a non-stitched, continuous-zoom virtual image. Furthermore, if the left virtual image portion (L) and the right virtual image portion (R) are connected, the connection therebetween is also a non-spliced, continuous-zoom virtual image.

Further, the virtual image formed by the display device may further include an intermediate virtual image portion including 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). For example, the front lower sub-virtual image portion (G), the front sub-virtual image portion (F), and the front upper sub-virtual image portion (T) sequentially correspond to display a screen on the ground, a screen in front, and a screen of the sky.

For example, one or more of the left side virtual image portion (L), the right side virtual image portion (R), the front lower sub virtual image portion (G), the front sub virtual image portion (F), and the front upper sub virtual image portion (T) may be configured to be perpendicular to the ground or inclined to the ground.

The virtual images are configured as virtual images with any adjacent virtual image parts connected, and the connection parts of the adjacent virtual image parts are non-spliced and continuously zoomed virtual images. For example, the finally formed continuous virtual image may be configured as a dustpan-type virtual image (lgr+f), that is, the image includes left and right side virtual images, a front lower sub-virtual image, and a front sub-virtual image, and at this time, the left and front side virtual images, the right and front lower sub-virtual images, and the right and front virtual images are all configured as connected states, so that the problems of parallax and/or visual convergence of the user can be effectively solved by forming non-spliced, continuous zoomed virtual images. Compared with the U-shaped virtual image (LGR left and right or LFR left and right), the dustpan-shaped virtual image (LGR+F) can solve the problems of ground lamination and two-side lamination, and forms a picture display which does not affect the distance in front.

It can be appreciated that in the configuration 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) may be flexibly selected from the finally formed virtual images according to the requirements. In the virtual image of which the final configuration is completed, if the intermediate virtual image portion includes a plurality of front lower sub-virtual image portion (G), front sub-virtual image portion (F), and front upper sub-virtual image portion (T), adjacent ones of the intermediate virtual image portions are at least partially connected. For example, the intermediate virtual image portion includes a front lower sub-virtual image portion (G) and a front sub-virtual image portion (F), and at least part of the images are non-spliced and continuously zoomed virtual images at the junction of the front lower sub-virtual image portion (G) and the front sub-virtual image portion (F). Alternatively, adjacent sub-virtual image portions in the intermediate virtual image portion are completely connected to obtain a better parallax and visual convergence preventing effect.

In some embodiments, the display device can be configured to include an image source assembly having an image source display including a first display region and a second display region, image light exiting the first display region corresponding to a left virtual image portion (L) and/or a right virtual image portion (R), and image light exiting the second display region corresponding to a remaining portion of the virtual image. The first display area and the second display area are arranged on the same image source display. That is, the light rays for forming the first virtual image portion and the second virtual image portion come from the same image source display of the display device.

In a specific configuration of the display device, the user may observe a virtual image formed by the display device in the eye box region, where the virtual image includes at least a left virtual image portion (L) and/or a right virtual image portion (R).

1. A refractive element is disposed in the imaging path of the image source display and is configured to refract image light rays incident to the refractive element after exiting the image source display such that the resulting imaged virtual image at the imaging window is continuously transitioned.

2. The image source display is configured to bend the image source display such that image light generated by the image source display is initially image light that forms a continuously transitioning, contoured image. For example, the image source display may be a shaped screen, a shaped projection screen, a shaped LED screen, a shaped OLED screen, a shaped LCD screen, or the like.

As shown in fig. 4, the display device of some embodiments includes an image source assembly 100 and an amplifying assembly 200.

The image source assembly 100 includes an image source display 110 and a dimming portion 120, the dimming portion 120 including a refractive element 121, the image source assembly 100 emitting a first image light.

The amplifying assembly 200 is disposed on the imaging path of the image source assembly 100, and the first image light emitted by the image source assembly 100 is formed into the second image light after passing through the amplifying assembly 200. That is, the magnification assembly 200 is configured to magnify incident image light to obtain magnified light for forming at least a partial virtual image.

The second image light is reflected through the imaging window 300 to form a continuous virtual image in the eye-box region, the continuous virtual image including at least one of a left virtual image portion (L) and a right virtual image portion (R).

The display device in the second aspect embodiment is the same as the display device in the first aspect embodiment, and the finally formed continuous virtual image may be configured to include the left side virtual image portion (L) and/or the right side virtual image portion (R), and further, one or more 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) may be further included in the formed continuous virtual image. Among the continuous virtual images, the connection of adjacent virtual images is a non-spliced continuous zooming virtual image.

Taking the final formed integral opposite virtual image as a U-shaped virtual image (the image may also be a dustpan-shaped virtual image or virtual images of other shapes), a U-shaped refractive element (e.g. a U-shaped glass block) is disposed on the image path of the image source assembly 100, and the U-shaped refractive element can add an optical path to the light passing through the U-shaped refractive element. At this time, for the part of light, the equivalent object distance will change, and the imaging distance will also change accordingly, and finally the U-shaped virtual image is realized.

That is, the real object distance is not changed during the imaging process. However, by providing a U-shaped refractive element in the imaging path of the image source assembly 100, the optically equivalent object-to-optic distance is changed, and therefore the equivalent object distance of the first image light produced by the image source assembly 100 is also changed.

For example, after the U-shaped glass block is set, the light emitted from the image source display 110 is refracted from the U-shaped glass block and then emitted. By providing the U-shaped glass block, the position of the virtual image generated by the image source assembly 100 is changed, that is, after the U-shaped glass block is added, the object distance of the image source assembly 100 is changed, and accordingly, the virtual image formed by the imaging window 300 is changed into a U-shape. And in the case of the same refractive index, the thicker the glass block, the closer the virtual image formed to the human eye.

For example, the refractive element 121 is associated with the image surface of the finally formed virtual image, and by changing the shape of the refractive element 121, the whole continuous virtual image of the imaging virtual image imaged on the imaging window 300 reflected to the human eye can be a U-shaped virtual image, a dustpan-shaped virtual image or a virtual image with any other desired appearance, which is not particularly limited herein.

Alternatively, the magnifying assembly 200 may be a curved mirror, a convex lens, a diffractive and geometric waveguide, an HOE windshield, or the like.

Alternatively, the magnifying element 200 is a concave mirror; in this case, the surface of the concave mirror near the display area is a concave curved surface. The curved mirror may be configured to enlarge the imaging dimension of the image frame so that the display device has a longer imaging distance and a larger imaging dimension, and may also cooperate with the imaging window 300 (e.g., a windshield) to eliminate virtual image distortion caused by the imaging window 300.

As shown in fig. 5, another display device includes an image source assembly 100 and an amplifying assembly 200.

The image source assembly 100 includes a curved image source display 110, and the image source assembly 100 emits a first image light.

The amplifying assembly 200 is disposed on the imaging path of the image source assembly 100, and the first image light emitted by the image source assembly 100 is formed into the second image light after passing through the amplifying assembly 200.

The second image light is reflected by the imaging window 300 and forms a continuous virtual image in the eye box region, wherein the continuous virtual image at least comprises one of a left virtual image part (L) and a right virtual image part (R).

The display device in the third aspect embodiment is the same as the display device in the first aspect embodiment, and the finally formed continuous virtual image may be configured to include the left side virtual image portion (L) and/or the right side virtual image portion (R), and further, one or more 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) may be further included in the formed continuous virtual image. Among the continuous virtual images, the connection of adjacent virtual images is a non-spliced continuous zooming virtual image.

Taking the final formed integral opposite virtual image as a U-shaped virtual image (the formed integral opposite virtual image can also be a dustpan-shaped virtual image or virtual images in other shapes) as an example, the curved image source display 110 is an OLED screen, the light emitting surface of the OLED screen is a U-shaped cambered surface, and finally the U-shaped virtual image is formed. The curved image source display 110 includes a display area, the display area is disposed on the light emitting surface of the OLED screen, the first image light emitted from the display area of the curved image source display 110 is reflected by the amplifying component 200 to form a second image light, and the second image light is reflected by the imaging window 300 to form a U-shaped virtual image in the eye box area.

For example, the shape of the overall continuous virtual image reflected to the human eye of the imaged virtual image imaged at imaging window 300 can be changed by changing the selection of the curved image source display 110, the shape of which is associated with or matches the shape of the image of at least part of the virtual image that is ultimately formed. So that the final continuous virtual image thereof presents a U-shaped virtual image, a dustpan-shaped virtual image or a virtual image having any other desired appearance.

Alternatively, the magnifying assembly 200 may be a curved mirror, a convex lens, a diffractive and geometric waveguide, an HOE (Holographic Optical Elements, holographic optical element) windshield, or the like.

Fig. 6 (a) shows a schematic structural view of a U-shaped virtual image concave rearward according to an embodiment of the present application. Fig. 6 (b) shows a schematic structural diagram of a single left virtual image according to an embodiment of the present application. Fig. 6 (c) shows a schematic structural diagram of a U-shaped virtual image concave rearward plus a planar virtual image according to an embodiment of the present application. Fig. 6 (d) shows a schematic structural view of a forwardly convex U-shaped virtual image according to an embodiment of the present application.

Referring to fig. 6 (a) -6 (d), in the continuous virtual images formed by the display device according to any of the embodiments of the first, second and third aspects of the present application, the positions on the virtual images corresponding to the same contour line of the refractive element 121 are on the same circumference of the polar coordinate system with the set reference point as the origin. For the left virtual image portion (L) and/or the right virtual image portion (R) of the continuous virtual images, the portion of the virtual image corresponding to the position having the larger polar coordinate angle among the different positions of the virtual images is closer to the eye box region.

Since the imaging distance of the virtual image in the embodiment can be gradually changed in the polar coordinate system, the AR content can be displayed at a distance matched with the environmental object in a proper size, so that the AR content and the environmental object can be aligned or overlapped, thereby solving the problems of parallax and vergence, and realizing gradual change of the POI (point of interest, object of interest) from far to near.

Whereas, if there is an intermediate virtual image portion among continuous virtual images formed by the display device of any one of the embodiments of the first, second, and third aspects of the present application, and the intermediate virtual image portion includes the front lower sub-virtual image portion (G) and/or the front upper sub-virtual image portion (T), the portion of the virtual image corresponding to the position where the lower viewing angle or the lower viewing angle is larger among the different positions of the virtual image is closer to the eye box region.

In the setting state, a user can look like far, near and near in the middle of two sides of a road in the process of driving a vehicle, for example, in the process of using the display device of any embodiment of the first aspect, the second aspect and the third aspect of the application to assist driving, so that the user can be well attached to objects in the external environment, the problems of parallax, vision convergence and the like of the user are effectively solved, and the driving fatigue of the user is relieved.

For example, in the continuous virtual images formed by the display device according to any of the first, second and third embodiments of the present invention, the image plane shape of the left and/or right virtual image portions is curved, and the object of interest features on both sides of the road can be more attached to the curved virtual image by imaging, so that the problems of parallax and/or convergence of vision of the user can be effectively solved.

It will be appreciated herein that in a geographic information system, an object of interest may be a house, a shop, a post, or a bus stop, etc.

For example, the display device according to any one of the embodiments of the first, second, and third aspects has a front lower sub-virtual image portion (ground virtual image portion) (G) among the continuous virtual images, for example, a virtual image formed to be flat (parallel or approximately parallel to the ground) or inclined (high near low) on the ground, and at least one of the left and right virtual image portions, the larger the angle, the closer the virtual image distance. The virtual image part of the ground is combined, so that the problem of displaying pictures on the ground can be solved. Wherein the connecting portions of the virtual images may be right angle or rounded/radiused.

For example, the display device according to any of the embodiments of the first, second and third aspects may form a continuous virtual image, which includes at least one virtual image, such that the virtual image has more than one edge virtual image that is closer to each other and more than one edge virtual image that is farther from each other, for example, a U-shaped virtual image; for example, the U-shaped virtual image may refer to a U-shape that protrudes from left to right forward or is concave backward, i.e., a virtual image having left, front, and right three portions, as shown in fig. 6 (a); alternatively, the U-shaped virtual image may be a virtual image having three parts of left, ground and right, as shown in fig. 6 (d); alternatively, the U-shaped virtual image may be a virtual image having three portions, left, upper, and right.

Further alternatively, the continuous virtual image may be a dustpan-shaped virtual image, i.e. a virtual image portion is added to the shape of the U-shaped virtual image, for example a virtual image having four portions, left, front, right, and ground. Further, the continuous virtual image may be added with one virtual image portion based on the dustpan-shaped virtual image, for example, a virtual image having four portions of left, front, right, ground, and top. Wherein, each virtual image can be obliquely arranged. Of course, the U-shaped virtual image may be obliquely disposed forward, backward, and backward.

Further, for example, the U-shaped virtual image may be formed as a virtual image with a convex middle portion protruding forward, two sides extending rearward, a certain height in the up-down direction, and upper and/or lower ends extending rearward like a dustpan. That is, the front, left, right, lower, and/or upper of the dustpan-shaped virtual image may be configured such that the virtual image is present.

For example, the U-shaped virtual image portion includes a left side virtual image portion and a right side 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.

It will be appreciated that, of the continuous virtual images formed by the display device of any of the embodiments of the first, second and third aspects, it may also be configured to have an L-shaped virtual image portion, i.e. to form an L-shaped virtual image. The L-shaped virtual image portion includes a left side virtual image portion or a 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.

For example, 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 is perpendicular to the ground or inclined to the ground, or the front lower sub-virtual image portion is tiled or parallel to the ground.

In some scene application examples of the display device of any of the embodiments of the first, second and third aspects, the virtual image displayed by the left virtual image portion includes information related to a left external object of interest located on the left side of the travel route, and/or the virtual image displayed by the right virtual image portion includes information related to a right external object of interest located on the right side of the travel route. Similarly, the front lower sub-virtual image portion (G), the front sub-virtual image portion (F), and the front upper sub-virtual image portion (T) may also be configured such that the displayed virtual images include corresponding object-of-interest related information.

For example, the virtual images formed by the display device can be adjusted by configuring, so that POIs (Point of Interest, objects of interest) are displayed on the two continuous virtual images, and are fused with features on two sides of a real road, including buildings, parking lots, bus stops, traffic signs and the like; or displaying navigation guidance UI (User Interface) on the two side continuous virtual images, which is integrated with the real road crossing, including crossroad, main/auxiliary road/ramp and the like; or the blind area prompt UI is displayed on the continuous virtual images at the two sides and is fused with obstacles (automobiles, bicycles, pedestrians and the like) coming from the blind areas at the two sides of the automobile body in a real road; or displaying a navigation guidance UI on the ground continuous virtual image, fusing with the road surface of the display road, and carrying out doubling and overtaking guidance.

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

When the refraction member is disposed on the imaging path of the image source display, so that the imaged continuous virtual image includes at least one of the left virtual image portion (L) and the right virtual image portion (R), by changing the selection of the refraction member 121, the integral continuous virtual image reflected to the human eye by the imaged virtual image formed on the imaging window 300 can be finally a U-shaped virtual image, a dustpan-shaped virtual image or a virtual image with any other shape desired to be presented.

In some embodiments, the optical path length of the light corresponding to the refracted light exiting from at least part of the light exit surface of the refraction element is gradually changed in the refraction element.

For example, as shown in fig. 7 (a), 7 (b) and 8, 9, the U-shaped glass block may have a concave arc surface or a half concave arc surface. The lower surface of the U-shaped glass block is a surface of the refractive element 121 near the image source (also referred to as an incident surface of the image light), and the upper surface is a surface of the refractive element 121 far from the image source (also referred to as an outgoing surface of the image light). In the left-right direction, the optical distance of the image light rays exiting from at least a part of the region gradually changes in the process of entering the refractive member 121 from the lower surface to exiting from the upper surface, thereby gradually changing the Virtual Image Distance (VID) from different positions in the formed virtual image to the eye. For example, the optical distance increases and then decreases. It will be understood that the description of the vertical direction is merely for convenience of description of the drawings, and does not limit the actual structure of the display device.

For example, the refractive member 121 includes a plurality of sub-refractive members stacked. For example, the materials of the plurality of sub-refractive elements may be different to have different refractive indices.

It will be understood that the optical distance that the refraction element 121 propagates from the image light emitted by the image source display 110 to the amplifying assembly 200 refers to the product of the geometric path of the image light emitted by the corresponding image source display 110 to the amplifying assembly 200 and the refractive index of the propagation medium. In the case where the refractive element is provided, the geometric path of the image light rays exiting from the image source display 110 to the magnifying element 200 includes the portion passing through the refractive element 121 and the portion passing through the air, and the product of the refractive index of the refractive element and the portion passing through the refractive element of the geometric path of the image light rays is the "additional optical distance" described above.

Alternatively, the "additional optical distance" may be defined as the product of the refractive index difference of the refractive index of air subtracted from the refractive index of the refractive element 121 through which the portion of the geometric path traveled by the image light rays from the image source to the magnifying element 200 passes through the refractive element 121.

In the above embodiments, for example, fig. 7 (a) and 7 (b), the refractive index of the glass block is changed by structural change (the light-emitting surface is a U-shaped surface). In other embodiments, the refractive index of the entire glass block can be changed by changing the refractive index of the glass block itself. I.e. by varying the thickness and/or refractive index of the glass block, the formation of the final U-shaped virtual image is achieved. For example, the thickness and/or refractive index of the refractive element 121 gradually changes in a direction perpendicular to the light incident surface of the refractive element 121.

For example, the light-emitting side of the refractive element 121 has a cylindrical surface or a hyperboloid. When the refraction element 121 is arranged, the refraction element 121 can be closely attached to the image source display 110 or a limited interval is arranged between the refraction element 121 and the image source display 110, and the position of the image source display 110 can be selected according to the use requirement; the light loss is a certain amount, that is, a part of light is reflected at the light incident surface of the refraction element 121, so that waste is caused.

Alternatively, the distance between the incident surface of the refractive element 121 and the image source display 110 is not less than 10mm. In other embodiments, the distance between the incident surface of the profiled refractive element 121 and the image source assembly 110 is less than 10mm.

For example, the side of the refractive element 121 may be provided with a fixing means, such as a buckle or a slot, to fix the glass block against movement. For example, the number of the refractive members 121 is not limited to one, and for example, a plurality of independent continuous virtual images, or a plurality of continuous virtual images, or the like may be formed.

The positions of the image source display 110 and the refractive member 121 are independent of each other, for example, when the refractive member 121 is configured as a U-shaped glass block, flexible setting of the position of the image source display 110 can be achieved. For example, in fig. 7 (a), the image source display 110 is horizontally arranged, and the refraction element 121 is matched with the image source display 110 to realize all/part of the U-shaped virtual image, so that the requirement on the installation angle of the image source can be reduced without adjusting the position of the image source display 110. In some other embodiments, the image source display 110 may be at other angles (theoretically, any angle), and by adding corresponding U-shaped glass tiles, the required virtual image requirement is achieved, which can reduce the requirement on the installation angle of the image source display 110. It should be understood here that the U-shaped glass block constituting the refracting element 121 may be a complete structure or a spliced structure of a plurality of glass blocks.

For example, the refractive element 121 is light-transmitting, and the refractive index of the refractive element 121 is different from that of air, for example, the refractive index of the refractive element 121 is greater than that of air (i.e., greater than 1), so that the optical path length of the image light of the image source assembly 110 to the amplifying assembly 200 is different, thereby realizing gradual zooming of at least part of the region of the virtual image.

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, etc., and the composite material may include metal oxide doped-polymethyl methacrylate, etc. The material of the refractive element 121 is not limited to the above-listed materials, and may be any material that transmits light and has a difference in refractive index from air.

For example, the refractive element 121 has a light transmittance of 60% to 100% with respect to light. For example, the refractive element 121 has a light transmittance of 80% to 99% with respect to light. For example, the refractive element 121 has a light transmittance of 90% to 99% with respect to light.

For example, by providing the refractive element 121 on the optical path along which the image light emitted from the image source display 110 propagates to the magnifying element 200, in other words, the refractive element 121 may be located on the optical path between the magnifying element 200 (curved mirror) and the image source. For example, the refraction element 121 is located on the optical path of the image light emitted from the image source display 110 and transmitted to the amplifying assembly 200, but not limited thereto, the refraction element 121 may also be located on the optical path of the image light reflected from the amplifying assembly 200 to the imaging window 300.

For example, the incident surface of the refraction element 121 may be adhered to the display surface of the image source display 110 through transparent optical cement. For example, the incident surface of the refraction element 121 and the display surface of the image source display 110 may be disposed at intervals. For example, the incident surface of the refraction element 121 and the display surface of the image source display 110 may be parallel and spaced apart.

In some embodiments, based on the display device provided with the refraction member, by changing the imaging position of the virtual image, the gap between the imaging position of the virtual image and the focusing position of the user's line of sight is reduced, so as to improve the convergence conflict of vision and improve the user experience. For example, it is possible to prevent or reduce the occurrence of fatigue, malignancy, and other adverse conditions in the user, and to improve the safety of driving.

Fig. 10 (a) shows a schematic structural diagram of a curved image source according to some embodiments of the present application. Fig. 10 (b) shows a schematic structural diagram of a curved image source according to another embodiment of the present application. Fig. 11 shows a schematic structural view of a display device according to another embodiment of the present application.

In the display device according to the embodiment of the third aspect, the image light generated by the image source display 110 is initially image light that can form a continuously transitional special-shaped image by configuring the image source display 110 to bend the image source display 110. By varying the selection of the curved source display 110, the shape of the overall continuous virtual image reflected to the human eye by the imaged virtual image imaged at the imaging window 300 can be varied. The distance from at least part of the virtual images to eyes is different and gradually changed, so that the gradual zooming of the virtual images is realized, and the final continuous virtual images of the virtual images are enabled to present U-shaped virtual images, dustpan-shaped virtual images or virtual images with any other appearance which is wanted to be presented.

The progressive zoom may be one of a direction perpendicular to the ground and a direction parallel to the ground of the virtual image, or may be a combination of both directions.

Referring to fig. 10 (a), 10 (b) and 11, the curved image source display 110 may be configured with a concave arc surface or with a half-concave arc surface, while in other embodiments, the curved image source display 110 may be configured with a convex arc surface or other shapes as desired.

For example, the curved image source display 110 may be configured such that a portion of the curved image source display is a planar screen and another portion of the curved image source display is an arc-shaped screen, the planar screen having passed through the magnification assembly 200 and the image light having passed through the magnification assembly 200 forms a vertical virtual image, and the arc-shaped screen having passed through the magnification assembly 200 and the image light having passed through the magnification assembly forms a U-shaped virtual image. It will be appreciated that a vertical picture may be considered vertical or nearly vertical, may have an error in the range of angles, for example, an angle between the picture and the ground in the range of 80-100 degrees, and may be considered to form a vertical picture.

For example, a fixing device, such as a buckle or a slot, may be disposed on the side of the curved image source display 110 to fix the curved image source display 110 from moving.

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

For example, curved image source display 110 may form a plurality of independent U-shaped virtual images, or a plurality of consecutive U-shaped virtual images, or the like.

For example, the depth of field of the curved image source display 110 may be 0.5-1.5cm. Alternatively, the depth of field is 1cm. It will be appreciated herein that the depth of field is the difference between the point at which the virtual image formed by curved image source display 110 is furthest from the human eye and the point at which it is closest to the human eye.

For example, curved image source display 110 includes at least one of a micro-scale LED display device, a millimeter-scale LED display device, a liquid crystal on silicon display device, a digital light processor, a microelectromechanical system display.

Fig. 12 shows a schematic structural view of a display device according to another embodiment of the present application.

Referring to fig. 12, the display device includes an image emitting section 100 and an amplifying element 200. The amplifying element 200 includes a first reflecting member 210 and a second reflecting member 220.

The first image light emitted by the image source assembly 100 is formed into a second image light by the first reflecting member 210 and the second reflecting member 220. The second image light is reflected by the imaging window 300 and forms a continuous virtual image in the eye box region, wherein the continuous virtual image at least comprises one of a left virtual image part (L) and a right virtual image part (R).

For example, the amplifying element 200 may further include a third reflecting member, a fourth reflecting member, etc. according to imaging requirements, and the number and arrangement of the reflecting members in the amplifying element 200 are not particularly limited.

For example, the first reflecting member 210 includes at least one of a plane mirror, a curved mirror, an aspherical mirror, and a spherical mirror, and the second reflecting member 220 is a curved mirror, which may be a concave mirror. In this case, the surface of the concave mirror near the display area is a concave curved surface. The curved mirror may be configured to provide a head-up display with a greater imaging distance and greater imaging dimensions, and may also be used in conjunction with a curved imaging window (to be described later) such as a windshield to eliminate virtual image distortion caused by the imaging window.

For example, the curved mirror may be configured as a zoom curved mirror, which in some examples completes the setup prior to shipping, with no change in curvature during use; in other examples, the variable focus curved mirror may adjust curvature via an electric field to change the focal length of the curved mirror in real time and rapidly during use.

For example, in the display device according to any of the embodiments of the first, second, and third aspects, the image source display 110 or the curved image source display 110 may be a single-color image source, or may be a color image source (for example, an image source capable of emitting RGB mixed light), such as a Light Emitting Diode (LED) display, or a Liquid Crystal Display (LCD), or the like.

For example, the image source display 110 or the curved image source display 110 may be a single image source, a dual image source or multiple image sources, such as a Light Emitting Diode (LED) display, or a Liquid Crystal Display (LCD), etc., and the kind of the image source display 110 or the curved image source display 110 is not limited in this application.

For example, the image source display 110 or the curved image source display 110 may be configured as a Liquid Crystal Display (LCD), a Light Emitting Diode (LED), an Organic Light Emitting Diode (OLED), a projection device, or the like, which emits a virtual image or a real image, or may be configured as a virtual image or a real image formed by these display devices.

Fig. 13 shows a schematic structural view of a display device according to another embodiment of the present application. Fig. 14 shows a schematic structural view of a display device according to another embodiment of the present application. Fig. 15 shows a schematic structural view of a display device according to another embodiment of the present application. Fig. 16 shows a schematic structural view of a display device according to another embodiment of the present application.

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 comprising a first virtual image and a second virtual image, the first virtual image comprising a left side virtual image portion and/or a right side virtual image portion.

For example, the distance from the proximal end of the first virtual image to the eye-box region of the display device is less than the distance from the proximal end of the second virtual image to the eye-box region; 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.

For example, referring to fig. 13 to 16, the display apparatus of the fourth aspect embodiment is configured to generate at least two layers of virtual images having different distances from a user, the at least two layers of virtual images including a first virtual image including a left-side virtual image portion and/or a right-side virtual image portion. The included angle between the first virtual image and the horizontal direction is more than, equal to or less than 90 degrees.

For example, the at least two virtual images further include a second virtual image, a distance from a proximal end of the first virtual image to an eye box region of the display device is smaller than a distance from a proximal end of the second virtual image to the eye box region, and an included angle between the second virtual image and the horizontal direction is greater than, equal to, or less than 90 degrees.

For example, 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, the display device being configured to enable a user to see the at least one naked eye 3D virtual image through the at least one virtual image.

For example, the at least two virtual images further comprise a third virtual image, the third virtual image being a naked eye 3D virtual image, the display device being configured to enable a user to see the 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 display device includes an image source device configured to emit left eye light corresponding to the left eye virtual image received by the left eye of the same user and right eye light corresponding to the right eye virtual image received by the right eye of the same user, the left eye light allowing the user to see the left eye virtual image, and the right eye light allowing the user to see the right eye virtual image.

The left eye virtual image region and the right eye virtual image region are positioned on the same imaging plane (i.e. the imaging distance is basically equal), and the left eye light and the right eye light are emitted by the same image source, so that the left eye of a user can see the pattern of the left eye virtual image region, the right eye can see the pattern of the right eye virtual image region, and the user can see a 3D effect due to the structure of the human eye and the vision processing principle of the brain, and the effect can also be called naked eye 3D.

For example, as shown in fig. 13, the two virtual images formed finally are a U-shaped virtual image and a vertical virtual image, and the display device includes two image source displays 110, where the two image source displays 110 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 a U-shaped virtual image and a vertical virtual image, respectively.

Wherein the two virtual images shown in fig. 13 are different in imaging distance, the U-shaped virtual image is closer to the imaging window 300 than the perpendicular virtual image. In other embodiments not shown, the U-shaped virtual image may also be configured to be farther from the windshield than the perpendicular virtual image, so that the virtual image more readily blends with objects in the surrounding environment, improving the fit of the image. Of course, in other embodiments, the imaging distances of the U-shaped virtual image and the perpendicular virtual image may be the same, or partially the same.

For example, as shown in fig. 14, the display device includes three image source displays 110, where the three image source displays 110 are respectively an arc-shaped image source 111, a plane image source 112 and a plane image source 113, and the arc-shaped image source 111, the plane image source 112 and the plane image source 113 respectively form a U-shaped virtual image and two vertical virtual images, where the three virtual images are shown in the figure with different imaging distances, and the U-shaped virtual image is disposed between the two vertical virtual images. In other examples, the U-shaped virtual image may be located at the most distal or most proximal end. In other examples, the imaging distances of the three virtual images may also be the same, or partially the same. In addition, the types of the image sources in the three image source displays 110 can be flexibly set according to the requirements, and are not limited to the setting states of the three image source displays 110 including the arc-shaped image source 111.

For example, the planar image source 112 and the planar image source 113 may be arranged side by side, or may be configured as independent image sources having different arrangement positions.

Further, the number of image sources included in the image source display 110 may be more, for example, five, six, etc., which is not particularly limited herein.

In addition, in other embodiments, a curved surface having a plurality of U-shaped structures may be disposed on the curved image source 111. In 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 other embodiments, multiple virtual arcuate images may be achieved with at least two U-shaped glass tiles.

For example, in some embodiments, the image source display 110 includes two image sources, a first arc-shaped image source and a second arc-shaped image source, respectively, and the light rays emitted by 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 can be arranged at intervals far from each other or can be at least partially connected together excessively. Further, the number of the arc-shaped image sources can be more, and each arc-shaped image source forms a plurality of U-shaped virtual images respectively.

For example, as shown in fig. 15, the image source display 110 includes an arc-shaped image source 111 and a planar image source 112, and a transflective element is disposed on an 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 transflective element, a light ray B emitted from the planar image source 112 irradiates the transflective element to be reflected, so as to form a light ray AB, the light ray a finally forms a U-shaped virtual image a ', the light ray B forms a vertical virtual image B', and the inclined virtual image a 'and the vertical virtual image B' are coaxially disposed.

Regarding the coaxiality, the center lines of the U-shaped virtual image A 'and the vertical virtual image B' are coincident or nearly coincident (the included angle between the center lines of the two is in a set range, for example, the included angle is in a range of 10 degrees), and the coaxiality of the two virtual images is indicated; further, if the projection of the smaller virtual image in the direction of the larger virtual image falls entirely within the range of the larger virtual image, it may also be referred to as an on-axis virtual image.

For example, as shown in fig. 16, the image source display 110 includes an arc-shaped image source 111, a planar image source 112, and a planar image source 113. And a transflective element is arranged on the light path of the arc-shaped image source 111 and the planar image source 112, the light ray A emitted by the arc-shaped image source 111 passes through the transflective element, the light ray B emitted by the planar image source 112 irradiates the transflective element to be reflected, so as to form a light ray AB, the light ray A finally forms a U-shaped virtual image A ', the light ray B forms a vertical virtual image B', and the U-shaped virtual image A 'and the vertical virtual image B' are coaxially arranged. The vertical virtual image C ' formed by the planar image source 113 is the same as or different from the U-shaped virtual image a ' or the vertical virtual image B '. The coaxial display mode can reduce the use of the plane reflecting mirror and optimize the space structure.

For example, a U-shaped refractive element (e.g., a U-shaped glass block) is disposed on the optical path of the image source display 110, where the U-shaped refractive element can add an optical path to the light passing through the U-shaped refractive element, and at this time, for this portion of light, the equivalent object distance will change, and the imaging distance will also change accordingly, so as to implement a U-shaped virtual image. Because the arc-shaped screen can realize the U-shaped virtual image, the glass brick can realize the U-shaped virtual image. In some embodiments, the two may be combined.

For example, an arcuate screen may be used in conjunction with a U-shaped glass block to form a U-shaped virtual image, or alternatively, to form a tiled virtual image. For example, the arc-shaped screen and the U-shaped glass bricks are used for respectively forming U-shaped virtual images with different imaging distances.

Fig. 17 shows a schematic structural view of a display device according to another embodiment of the present application.

Referring to fig. 17, describing naked eye 3D imaging, an image source display 110 of a display device includes 8 columns of image source units, 2 first barrier units, and 2 second barrier units for illustration. The interval d2 exists between the light barrier and the image source display 110, and the first blocking unit 410 and the second blocking unit 420 can both block light, so that part of the second light emitted by the image source units (such as R1, R2, R3, R4 shown in fig. 3) cannot reach the left eye area, and only the first light emitted by the image source units L1, L2, L3, L4 can be seen in the left eye area; similarly, only the second light emitted from the image source units R1, R2, R3, R4 can be seen in the right eye area. The first blocking unit 410 allows the first light to be emitted to a first designated area (left eye area as shown in fig. 3), such as the first light emitted from the image source units L1, L2, L3, L4; and the second blocking unit allows the second light to be emitted to a second designated area (right eye area as shown in fig. 3), such as the second light emitted from the source units R1, R2, R3, R4, thereby realizing stereoscopic imaging by separating the visual virtual images of the left eye and the right eye. Wherein the sizes of the first blocking unit 410 and the second blocking unit 420, and the positions between the first blocking unit 410 and the second blocking unit 420 are specially designed after being precisely calculated, so that imaging at a specific position can be ensured.

Fig. 18 shows a schematic structural view of a display device according to another embodiment of the present application.

For example, when the display device is used to control the direction of light emitted from the light source, an opaque housing disposed around the light source is generally used to control the direction of light emitted from the light source, such as a hollow reflective cup. However, controlling the direction of light through the opaque housing may result in poor uniformity of the virtual image, and the opaque housing may also affect heat dissipation of the light source.

The image source display 110 of the display device of the present application includes a light source portion having a plurality of light sources 114 and a light-transmitting collimating portion 115, and light emitted from the plurality of light sources 114 is transmitted through the light-transmitting collimating portion 115, and at least a portion of each of the plurality of light sources 114 is not provided with a reflective cup for reflecting light emitted from the light source 114. And/or, at least a continuous gas medium layer is included between the light source layer where the plurality of light sources 114 are located and the collimation layer where the light-transmitting collimation portion 115 is located. It will be appreciated here that the image source display 110 includes a light source section having a plurality of light sources 114 and a light transmissive collimating section 115.

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

For example, the image source display 110 includes a direction control module 116, where the direction control module 116 includes a light-transmitting collimating part 115 and a plurality of transparent condensing parts 117, and the light emitted from the light source 114 corresponding to the plurality of transparent condensing parts 117 passes through the light-transmitting collimating part 115 after passing through the plurality of transparent condensing parts 117, and a region between the light-transmitting collimating part 115 and the plurality of transparent condensing parts 117 is at least a continuous gas medium layer. Thus, at least a portion of the light sources 114 may not be provided with reflector cups, thereby facilitating heat dissipation from the light sources 114.

For example, the gaseous medium layer is adjacent to the collimating layer and the light source layer, whereby light from the light source 114 is transmitted through the gaseous medium layer and then directly incident on the collimating element; alternatively, the gas medium layer is adjacent to the condensing layer including the plurality of transparent condensing portions 117 and the collimating layer, and thus, the light emitted from the light source 114 is directly incident on the collimating member after passing through the transparent condensing portions 117 and the gas medium layer.

For example, the gaseous medium layer may be air or other gas.

For example, the center of the collimating element is collinear with the center of the corresponding light source 114.

For example, the collimating element may be a convex lens or a fresnel lens, and the collimating element may reduce the divergence angle of the passing light.

For example, the light emitted from the plurality of transparent light-condensing portions 117 is directly incident on the light-transmitting collimating portion 115.

For example, the plurality of transparent light condensing parts 117 have grooves accommodating the corresponding light sources 114.

For example, the plurality of transparent light collecting portions 117 are bonded to the corresponding light sources 114.

For example, the light emitting surfaces of the plurality of transparent light condensing portions 117 are convex surfaces protruding in a direction away from the corresponding light source 114.

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

For example, as shown in fig. 19 and 20, the light emitting surface of the transparent light collecting portion 117 includes at least a first light emitting curved surface, and the light source 114 may be disposed at the focal point of the first light emitting curved surface of the transparent light collecting portion 117. The light source 114 may be disposed inside the transparent light condensing portion 117.

For example, the light source 114 is embedded inside the transparent light condensing part 117, and is located at an intermediate position of the lower surface of the transparent light condensing part 117. The transparent condensing part 117 may be a plano-convex lens having one flat surface and one convex surface.

In some embodiments, on the basis of any one of the first to fourth embodiments, the light emitting surface of the transparent light focusing portion 117 is a convex paraboloid, and the light source 114 is embedded inside the transparent light focusing portion 117 and is located at a focal point of the paraboloid; or, the light emitting surface of the transparent light gathering part 117 is a convex arc surface, and the light source 114 is embedded in the transparent light gathering part 117 and is positioned at the focus of the arc surface; alternatively, the light emitting surface of the transparent light gathering portion 117 includes a first light emitting curved surface and a second light emitting side surface, the first light emitting curved surface is a convex paraboloid, and the light source 114 is embedded in the transparent light gathering portion and is located at the focus of the paraboloid; alternatively, the light emitting surface of the transparent light focusing portion 117 includes a first light emitting curved surface and a second light emitting side surface, the first light emitting curved surface is a convex arc surface, and the light source 114 is embedded inside the transparent light focusing portion and is located at the focus of the arc surface.

For example, the lower surface of the transparent light collecting portion 117 is a flat surface bonded to the substrate, and the upper surface is a convex surface along the light emitting direction of the light source 114. The transparent light collecting portion 117 is located in the light emitting direction of the light source 114. The transparent condensing portion 117 is configured to condense the light emitted from the light source 114 to obtain a first condensed light line, and emit the first condensed light line to the light-transmitting collimating portion 115, and the light-transmitting collimating portion 115 is configured to further condense the incident first condensed light line to obtain a second condensed light line, and incident the second condensed light line to the light-converging portion 118. The light emitted from the light source 114 is condensed by the transparent condensing portion 117 and the light-transmitting collimating portion 115, so that the utilization rate of the light emitted from the light source can be further improved.

For example, the image source assembly 100 typically images with light in a target band that includes at least one spectral band; for example, the image source assembly 100 may implement imaging using light in three band colors of RGB (red, green, blue). In the case that the image source assembly 100 includes a liquid crystal panel, the image source assembly 100 can emit light with a specific polarization characteristic, for example, light with a second polarization characteristic; and, the transflective film 31 is capable of reflecting light having the second polarization characteristic in the target band, the transflective film 31 having a higher reflectance for light having the second polarization characteristic of at least one band and a higher transmittance for other light, for example, for light having the first polarization characteristic in the target band and other light (including light having the first polarization characteristic and light having the second polarization characteristic) other than the target band. The transflective film 31 can reflect most of the light emitted from the image source assembly 100 to the observation area, and most of the external ambient light can be incident to the observation area, for example, most of the light with the first polarization characteristic of the wave band can reach the observation area through the transflective film 31, so that the user can watch the external objects normally.

For example, the target band includes at least one spectral band, e.g., the half-width of the at least one spectral band may be less than or equal to 60nm.

For example, referring to fig. 21, if the light of the first polarization characteristic is P-polarized (hereinafter, abbreviated as P-polarized), the light of the second polarization characteristic is S-polarized (hereinafter, abbreviated as S-polarized), and the light guiding device can emit light 410 from the image source assembly 100, the light 410 is P-polarized; in the case where the light emitted from the image source assembly 100 is RGB light, the light 410 is RGB P-polarized light. The image source assembly 100 can convert the light 410 into the light 420, the light 420 is an imaging light, the imaging light is the S polarized light of RGB, and the transflective film 31 can reflect the S polarized light of RGB and transmit other light. For example, the transflective film 31 has a higher reflectance (e.g., transmittance of about 70% to 90%) for red, green, and blue light in the S polarization state, and a higher transmittance (e.g., transmittance of about 70% to 90%) for light in other bands and red, green, and blue light in the P polarization state.

As shown in fig. 21, if the image source assembly 100 emits the RGB light 420 with S polarization, the transflective film 31 has a higher reflectivity to the light 420, so most of the light 420 emitted from the image source assembly 100 can be reflected by the transflective film 31 into light 430, and the light 430 is reflected to the observation area, thereby improving the imaging brightness; in addition, most of the light rays in the external environment light 310 can be transmitted normally, and the observation of the external environment is not affected; for example, there are things that light of a main outgoing target band exists in the external environment, such as traffic signal lamps emitting red and green, and the light band generated by the signal lamps and the like is close to or coincides with the target band of RGB and the like, and part of light 311 having the second polarization characteristic (for example, S polarization state) in the light emitted by the signal lamps is reflected by the reflective film 31, but part of light 312 having the first polarization characteristic (for example, P polarization state) in the light emitted by the signal lamps can still transmit the reflective film 31 with high transmittance, and the user in the observation area can still observe the light emitted by the signal lamps and the like normally. For example, light rays in other bands than the RGB band may be included in the light rays 312.

The first polarization characteristic may be S polarization, or may be other polarization states such as circular polarization, elliptical polarization, etc., which is not limited in this embodiment; and, the above RGB is respectively the abbreviations of red light, green light and blue light; for example, it may be red light, green light and blue light distributed in a continuous band, or may be red light, green light and blue light distributed discontinuously, for example, the light may have a half-width of wavelength of not more than 60nm, a peak position of blue light wavelength may be in a range of 410nm to 480nm, a peak position of green light wavelength may be in a range of 500nm to 565nm, and a peak position of red light wavelength may be in a range of 590nm to 690 nm.

The embodiments of the present application have been described and illustrated in detail above. It should be clearly understood that this application describes how to make and use particular examples, but is not limited to any details of these examples. Rather, these principles can be applied to many other embodiments based on the teachings of the present disclosure.

Finally, it should be noted that: the foregoing description is only exemplary embodiments of the present disclosure, and not intended to limit the disclosure, but although the disclosure has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A display device, characterized in that the display device is configured to enable a user to observe a virtual image through an eye box area of the display device,

the virtual image includes at least a left side virtual image portion and/or a right side virtual image portion.

2. The display device of claim 1, wherein the display device comprises a display device,

the virtual images are continuous virtual images, or the virtual images comprise a plurality of virtual image parts with intersecting image plane extending directions, and at least part of the adjacent virtual image parts are connected; and/or the number of the groups of groups,

the display device comprises an image source assembly with an image source display, the image source display comprises a first display area and a second display area, the image light emitted from the first display area corresponds to the left virtual image part and/or the right virtual image part, and the image light emitted from the second display area corresponds to the rest of the virtual image.

3. The display device of claim 1, wherein the display device comprises an image source assembly having an image source display, wherein,

the image source display is a curved image source display; and/or the number of the groups of groups,

the image source assembly further includes a refractive element configured to refract the image light rays incident to the refractive element after exiting the image source display.

4. A display device according to claim 3, wherein,

in the case that the image source display is the curved image source display, the curved image source display has a surface shape matching an image surface shape of at least part of the virtual image;

in the case that the image source assembly includes the refractive element, an optical path of light rays exiting from at least a portion of the light exit surface of the refractive element in the refractive element matches an image surface of at least a portion of the virtual image.

5. A display device as claimed in claim 3, characterized in that the image light rays incident on the same contour of the refractive element are located on the same circumference of a polar coordinate system with a set reference point as origin at the corresponding position on the virtual image.

6. The display device according to any one of claims 1 to 5, wherein,

the display device further includes a magnifying assembly including one or more of a curved mirror, a convex lens, a diffractive waveguide, and a geometric waveguide, an HOE windshield.

7. The display device of claim 6, wherein the display device comprises a display device,

the magnification assembly includes a variable-focus curved mirror having a surface shape that matches an image surface shape of at least a portion of the virtual image.

8. The display device according to any one of claims 1 to 5, wherein,

the screen displayed by the left virtual image part comprises information related to a left external interest object positioned at the left side of the travel route; and/or the number of the groups of groups,

the screen displayed by the right virtual image portion includes information on a right external object of interest located on the right side of the travel route.

9. The display device according to any one of claims 1 to 5, wherein,

the virtual image part corresponding to the position with larger polar coordinate angle in different positions of the virtual image is closer to the eye box area; and/or the number of the groups of groups,

the position where the lower viewing angle or the lower viewing angle is larger among the different positions of the virtual image corresponds to the position where the virtual image is closer to the eye box region.

10. A display device as recited in any one of claims 1-5, wherein the connected portions of at least some of the virtual image portions in the virtual image are right angles or rounded.

11. A display device according to any one of claims 1 to 5, wherein the image plane shape of the left virtual image portion and/or the right virtual image portion is curved.

12. The display device according to any one of claims 1 to 5, wherein,

The virtual image at least comprises a U-shaped virtual image part with a U-shaped section, the U-shaped virtual image part comprises a left virtual image part and a right virtual image part, and the U-shaped virtual image part further comprises a front lower sub-virtual image part, a front sub-virtual image part and a front upper sub-virtual image part; and/or the number of the groups of groups,

the virtual image at least comprises an L-shaped virtual image part with an L-shaped section, the L-shaped virtual image part comprises a left side virtual image part or a right side virtual image part, and the L-shaped virtual image part further comprises one of a front lower sub-virtual image part, a front sub-virtual image part and a front upper sub-virtual image part.

13. The display device according to any one of claims 1 to 5, wherein,

the left virtual image part and/or the right virtual image part is perpendicular to the ground or inclined to the ground; or,

the virtual image further comprises a front sub-virtual image portion, the front sub-virtual image portion comprises 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, wherein one or more of a left side virtual image portion, a right side virtual image portion, a front lower sub-virtual image portion, a front sub-virtual image portion and a front upper sub-virtual image portion is perpendicular to or inclined to the ground, or the front lower sub-virtual image portion is tiled or parallel to the ground.

14. The display device of any one of claims 1-5, wherein the virtual image further comprises a front sub-virtual image portion comprising 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,

wherein adjacent sub-virtual image portions in the front sub-virtual image portion are not connected, or any adjacent sub-virtual image portions in the front sub-virtual image portion are connected, or adjacent partial sub-virtual image portions in the front sub-virtual image portion are connected, and/or the left side virtual image portion is connected with at least partial sub-virtual image portions adjacent thereto, and/or the right side virtual image portion is connected with at least partial sub-virtual image portions adjacent thereto.

15. The display device according to any one of claims 1 to 5, wherein,

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 including the left side virtual image portion and/or the right side virtual image portion and a second virtual image.

16. A display device as recited in claim 15, wherein a distance from a proximal end of the first virtual image to an eye-box region of the display device is less than a distance from a proximal end of the second virtual image to the eye-box region;

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.

17. The display device according to any one of claims 1 to 5, wherein,

the display device is configured to generate at least one virtual image including a naked eye 3D virtual image, the display device being configured to enable a user to see the at least one naked eye 3D virtual image through the at least one virtual image.

18. The display device according to any one of claims 1 to 5, wherein,

the image source component of the display device comprises a light source part with a plurality of light sources and a light transmission collimation part, the light emitted by the light sources is transmitted through the light transmission collimation part,

wherein at least part of each of the plurality of light sources is not provided with a reflecting cup for reflecting the light emitted by the light source, and/or at least a continuous gas medium layer is arranged between the light source layer where the plurality of light sources are positioned and the collimation layer where the light-transmitting collimation part is positioned.

19. The display device of claim 18, wherein the display device comprises,

light emitted by the light source is directly incident to the light-transmitting collimation part; or alternatively

The image source assembly comprises a direction control module, the direction control module comprises a light-transmitting collimation part and a plurality of transparent light-gathering parts, light emitted by a light source corresponding to the transparent light-gathering parts is transmitted through the light-transmitting collimation part after transmitted through the transparent light-gathering parts, and at least a continuous gas medium layer is arranged in a region between the light-transmitting collimation part and the transparent light-gathering parts.

20. The display device of claim 19, wherein the display device comprises,

light emitted from the plurality of transparent light-condensing portions is directly incident to the light-transmitting collimating portion; and/or the number of the groups of groups,

the transparent light gathering parts are provided with grooves for accommodating corresponding light sources; and/or the number of the groups of groups,

the transparent light gathering parts are attached to the corresponding light sources; and/or the number of the groups of groups,

the light emergent surfaces of the transparent light gathering parts are convex surfaces protruding in the direction away from the corresponding light sources; and/or the number of the groups of groups,

at least one of the plurality of transparent light gathering parts is a plano-convex lens.

21. The display device of claim 19, wherein the display device comprises,

the light emitting surfaces of the transparent light gathering parts are raised paraboloids, and the light sources are embedded in the transparent light gathering parts and are positioned at the focus of the paraboloids; or,

The light emitting surfaces of the transparent light gathering parts are raised arc surfaces, and the light source is embedded in the transparent light gathering parts and is positioned at the focus of the arc surfaces; or,

the light emitting surfaces of the transparent light gathering parts comprise a first light emitting curved surface and a second light emitting side surface, the first light emitting curved surface is a convex paraboloid, and the light source is embedded in the transparent light gathering parts and is positioned at the focus of the paraboloid; or,

the light emitting surfaces of the transparent light gathering parts comprise a first light emitting curved surface and a second light emitting side surface, the first light emitting curved surface is a convex arc surface, and the light source is embedded inside the transparent light gathering parts and located at the focus of the arc surface.

22. The display device according to any one of claims 1 to 5, comprising:

an image source assembly, the refractive element configured to emit image light;

a refraction member configured to perform refraction processing on incident image light to obtain refracted light; and

and an amplifying assembly configured to amplify the incident refracted light rays to obtain amplified light rays for forming at least a portion of the virtual image.

23. A display device according to claim 22, wherein the refractive element comprises one or more sub-refractive elements and/or at least part of the light exit surface of the refractive element comprises a curved surface and/or a planar surface.

24. The display device of claim 22, wherein the display device comprises,

the optical path of the light corresponding to the refracted light emitted from at least part of the light emitting surface of the refracting element in the refracting element gradually changes.

25. The display device of claim 22, wherein the display device comprises,

the thickness and/or refractive index of the refractive element gradually change along the direction perpendicular to the light incident surface of the refractive element.

26. The display device of claim 22, wherein the display device comprises,

the incident surface of the refraction piece is attached to the image source or arranged at intervals, and the distance between the incident surface of the refraction piece and the image source is not smaller than 10mm.

27. The display device according to any one of claims 1 to 5, comprising:

an image source assembly including a curved image source display configured to emit image light;

and an amplifying assembly configured to amplify the incident image light to obtain amplified light for forming at least part of the virtual image.

28. The display device of claim 27, wherein at least a portion of the light-emitting surface of the curved image source is curved.

29. The display device of claim 27, wherein the light-emitting surface of the curved image source is an arc-shaped surface, and the depth of field of the curved image source is 0.5-1.5cm.

30. The display apparatus of claim 27, wherein the curved image source comprises at least one of a micro-scale LED display device, a millimeter-scale LED display device, a liquid crystal on silicon display device, a digital light processor, a microelectromechanical system display.

31. A display device configured to allow a user to observe a virtual image through an eye box region of the display device, the virtual image including at least a first virtual image portion and a second virtual image portion intersecting in an image plane extending direction, the first virtual image portion and the second virtual image portion being connected.

32. A display device, wherein the display device is configured to enable a user to observe a virtual image through an eye box area of the display device, the virtual image comprises at least a first virtual image part and a second virtual image part which are intersected in an image plane extending direction, and light rays used for forming the first virtual image part and the second virtual image part come from a same image source display included in the display device.

33. An image source device, wherein the image source device is an image source device for a display device according to any one of claims 22 to 26, and the image source device comprises the image source assembly and the refractive element;

alternatively, the image source device is an image source device for a display device according to any one of claims 27-30, and the image source device comprises the curved image source display.

34. The display device of any one of claims 1-5, wherein the display device is a heads-up display device comprising an imaging window configured to reflect incident light rays to the eyebox area.

35. A traffic device comprising a display device according to any one of claims 1-32.

36. A display method, comprising:

projecting imaging light rays toward an imaging window of a display device, such that a user observes a virtual image in a field of view through an eye box region of the display device,

wherein the virtual image comprises at least a left side virtual image part and/or a right side virtual image part; and/or the virtual image at least comprises a first virtual image part and a second virtual image part which are intersected in the extending direction of the image plane, and the first virtual image part is connected with the second virtual image part.