Image generation device and head-up display

Abstract

The embodiment of the present application provides an image generation device and a head-up display. The image generation device comprises an illumination assembly. The illumination assembly comprises a light source and a partitioned illumination module; light emitted by the light source is projected to the partitioned illumination module; and the partitioned illumination module is formed with a movable light exit area which is configured to correspond to a position-adjustable human eye viewing zone. In the embodiment of the present application, the partitioned illumination module enables only the illumination light corresponding to the human eye viewing zone to enter the eyebox area, thereby reducing crosstalk.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of head-up display technology, and more particularly, to an image generation device and a head-up display. BACKGROUND

[0002] A head-up display (Head Up Display), also known as a head-up display device, is referred to as HUD. Its principle is to project important driving information such as speed and navigation on a projection medium, such as a windshield or a specially designed screen in the cockpit, for the driver to view, thereby avoiding the safety hazards caused by the driver looking down to view the display information of the instrument or other driving assistance devices, and increasing driving safety.

[0003] The current head-up display is prone to crosstalk between the images seen by the left eye and the right eye of the user when displaying images, that is, when the user's left eye and right eye move within the eyebox area, the user's left eye sees the image intended for the right eye to view, or the right eye sees the image intended for the left eye to view, which results in a decrease in user experience.

[0004] Therefore, there is a need to provide a new technical solution to solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to provide a new technical solution for an image generation device and a head-up display.

[0006] In a first aspect, embodiments of the present application provide an image generation device. The image generation device comprises:

[0007] An illumination assembly comprising a light source and a partitioned illumination module;

[0008] The light rays emitted by the light source are projected to the partitioned illumination module;

[0009] The partitioned illumination module forms a movable light emitting area, and the light emitting area is configured to correspond to a position-adjustable human eye viewing zone.

[0010] Optionally, the partitioned illumination module has a first direction equivalent to the horizontal direction of the eyebox, and has a second direction equivalent to the vertical direction of the eyebox;

[0011] The light emitting area is movable along the first direction, or the light emitting area is movable along the second direction, or the light emitting area is movable along a third direction, wherein the third direction, the first direction and the second direction are located in the same horizontal plane, and the third direction has components in both the first direction and the second direction.

[0012] Optionally, the shape of the light-out region matches the shape of the corresponding eyebox of the user.

[0013] Optionally, the image generating device comprises one of the partitioned illumination modules, which forms a first light-out region at the Nth moment, and the first light-out region is configured to correspond to the left eyebox of the user.

[0014] The partitioned illumination module forms a second light-out region at the Mth moment, and the second light-out region is configured to correspond to the right eyebox of the user, wherein the interval time between the Nth moment and the Mth moment is less than or equal to the persistence time of the human eye.

[0015] Optionally, the first light-out region and the second light-out region are arranged apart from each other, or the first light-out region and the second light-out region partially overlap to form an overlapping region, wherein the overlapping region does not belong to the central region of the first light-out region, nor to the central region of the second light-out region.

[0016] Optionally, in the case that the left eyebox of the user is adjusted from a first position to a second position, the first light-out region formed by the partitioned illumination module moves along with the left eyebox of the user; and

[0017] In the case that the right eyebox of the user is adjusted from a third position to a fourth position, the second light-out region formed by the partitioned illumination module moves along with the right eyebox of the user.

[0018] Optionally, the image generating device comprises two of the partitioned illumination modules, which comprise a first partitioned illumination module and a second partitioned illumination module, and the first partitioned illumination module and the second partitioned illumination module can simultaneously emit light;

[0019] The first partitioned illumination module forms a movable first sub-light-out region, and the second partitioned illumination module forms a movable second sub-light-out region.

[0020] The movable first sub-light-out region is configured to correspond to the left eyebox of the user, which is adjustable in position.

[0021] The movable second sub-light-out region is configured to correspond to the right eyebox of the user, which is adjustable in position.

[0022] Optionally, the partitioned illumination module comprises a light-uniformizing component and a movable modulation component, and the modulation component is located on the light-in side of the light-uniformizing component, or on the light-out side of the light-uniformizing component, or is arranged on the light-uniformizing component, so as to adjust the light-out region of the partitioned illumination module.

[0023] Optionally, the modulation component comprises a diaphragm assembly, which is arranged on the light-incoming side or the light-outgoing side of the light homogenizing component.

[0024] The diaphragm assembly comprises a first diaphragm and a second diaphragm, both of which are movably arranged.

[0025] The first diaphragm is movable to define a light-outgoing area corresponding to the left eye visual field of the user, and the second diaphragm is movable to define a light-outgoing area corresponding to the right eye visual field of the user.

[0026] Optionally, the modulation component comprises a mirror assembly, which is arranged on the light-incoming side of the light homogenizing component.

[0027] The mirror assembly comprises a first mirror group and a second mirror group, both of which are movably arranged.

[0028] The light rays emitted by the first mirror group are projected to the light homogenizing component to form a light-outgoing area corresponding to the left eye visual field of the user.

[0029] The light rays emitted by the second mirror group are projected to the light homogenizing component to form a light-outgoing area corresponding to the right eye visual field of the user.

[0030] Optionally, the modulation component comprises a light valve, which is arranged on the light homogenizing component.

[0031] The light valve is opened to form a light-outgoing area corresponding to the eye visual field of the user.

[0032] Optionally, the image generating device further comprises a display screen, and the light rays emitted by the light-outgoing areas at different positions enter the display screen and are emitted from the display screen at different angles.

[0033] Optionally, in the case where the image generating device comprises two sub-area illumination modules, the two sub-area illumination modules are a first sub-area illumination module and a second sub-area illumination module, and the image generating device comprises a first display screen and a second display screen.

[0034] The light rays emitted by the first sub-area illumination module from the first sub-area illumination module at different positions enter the first display screen and are emitted from the first display screen at different angles.

[0035] The light rays emitted by the second sub-area illumination module from the second sub-area illumination module at different positions enter the second display screen and are emitted from the second display screen at different angles.

[0036] Optionally, the image generating device further comprises a light combining mirror, which receives the light rays emitted from the first display screen and the second display screen.

[0037] In a second aspect, the embodiments of the present application further provide a head-up display. The head-up display comprises the image generation device and the optical assembly as described in the first aspect, and the optical assembly is configured to project the light emitted by the image generation device to the eyebox of a human eye.

[0038] According to the embodiments of the present application, the light emitted by the light source of the image generation device is projected onto the sub-region illumination module, and the light emitting area of the sub-region illumination module corresponds to the left eyebox or the right eyebox of a user. Thus, the sub-region illumination module allows only the illumination light corresponding to the eyebox of a human eye to enter the eyebox area, thereby reducing the crosstalk.

[0039] Other features and advantages of the present application will become apparent from the following detailed description of illustrative embodiments thereof, which proceeds with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0040] The accompanying drawings incorporated in and forming a part of the specification illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0041] Figure 1 A schematic diagram showing the crosstalk phenomenon in the prior art.

[0042] Figure 2 A schematic diagram showing the principle of the head-up display provided by the embodiments of the present application Figure One .

[0043] Figure 3 A schematic diagram showing the principle of the head-up display provided by the embodiments of the present application Figure Two .

[0044] Figure 4 A schematic diagram showing the principle of the head-up display provided by the embodiments of the present application Figure Three .

[0045] Figure 5 A schematic diagram showing the structure of the eyebox division provided by the embodiments of the present application.

[0046] Figure 6 A schematic diagram showing the structure of the image generation device provided by the embodiments of the present application Figure One .

[0047] Figure 7 A schematic diagram showing the structure of the image generation device provided by the embodiments of the present application Figure Two .

[0048] Figure 8 A schematic diagram showing the structure of the image generation device provided by the embodiments of the present application Figure Three .

[0049] Figure 9The structure of the image generation device provided by the embodiment of the application is shown Figure Four .

[0050] Figure 10 The structure of the image generation device provided by the embodiment of the application is shown Figure Five .

[0051] Reference signs:

[0052] 101, first viewing zone; 102, second viewing zone; 103, crosstalk area;

[0053] 200, eyebox; 201, left eye viewing zone; 202, right eye viewing zone; 203, transparent medium; 204, virtual image plane;

[0054] 3, display screen; 31, first display screen; 32, second display screen;

[0055] 4, optical assembly;

[0056] 5, partitioned illumination module; 5a, first partitioned illumination module; 5b, second partitioned illumination module;

[0057] 50, light homogenizing component; 51, first light exit area; 52, second light exit area; 53, modulation component; 531, first mirror group; 532, second mirror group; 533, first diaphragm; 534, second diaphragm;

[0058] 6, light distribution mirror group;

[0059] 7, light source; 71, light source unit;

[0060] 8, light combining mirror. DETAILED DESCRIPTION

[0061] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0062] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the application or its applications or uses.

[0063] Techniques and equipment known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification where appropriate.

[0064] In all examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0065] It should be noted that like reference numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it should not have to be discussed further in subsequent views.

[0066] The distance between two eyes of a human is generally about 65mm, and the width of the eyebox is generally about 130mm. Referring to Figure 1 The eyebox is divided into two viewing zones, which correspond to the images seen by the left and right eyes of the user respectively. In the existing HUD scheme, the light emitted by the image generation device is often projected into the entire eyebox, that is, the image generation device projects light into all viewing zones in the eyebox in combination with the optical assembly. In this case, there will be more or less crosstalk in the adjacent two viewing zones, such as Figure 1 The crosstalk region 103 is formed in the middle region of the first viewing zone 101 and the second viewing zone 102. When the human eye is located in the crosstalk region 103, the left eye and right eye images will be seen at the same time, forming crosstalk.

[0067] Based on the above technical problems, the embodiments of the present application provide an image generation device. The partitioned illumination module 5 of the image generation device can form a movable light emitting region, which moves following the change of the position of the human eye viewing zone. That is, only the region corresponding to the position of the human eye viewing zone can emit light, and the light is projected into the human eye viewing zone corresponding to the light emitting region. It can also be understood that only the illumination light corresponding to the human eye viewing zone enters the eyebox, and not all the light emitted by the image generation device is projected into all viewing zones in the eyebox, avoiding the crosstalk problem in the prior art.

[0068] Specifically, referring to Figures 6-10 The image generation device includes an illumination assembly, which includes a light source 7 and a partitioned illumination module 5. The light emitted by the light source 7 is projected into the partitioned illumination module 5. The partitioned illumination module 5 forms a movable light emitting region, which is configured to correspond to the position-adjustable human eye viewing zone.

[0069] In this embodiment, the light-out region is configured to correspond to the position-adjustable human eye visual field in two understandings. The first understanding is that, in the case that the positions of the user's left eye visual field 201 and the user's right eye visual field 202 do not change, the position of the left eye visual field 201 and the position of the right eye visual field 202 are two different visual field positions, the human eye visual field moves from the position of the left eye visual field 201 to the position of the right eye visual field 202, or the human eye visual field moves from the position of the right eye visual field 202 to the position of the left eye visual field 201, which belongs to a case of the "position-adjustable human eye visual field". Illustratively, for the position of the user's left eye visual field 201, the partitioned illumination module 5 forms a light-out region corresponding to the left eye visual field 201. For the position of the user's right eye visual field 202, the partitioned illumination module 5 forms a light-out region corresponding to the right eye visual field 202. The light-out region corresponding to the left eye visual field and the light-out region corresponding to the right eye visual field do not appear at the same time. It can be understood that the light-out region corresponding to the left eye visual field 201 moves to the position of the light-out region corresponding to the right eye visual field 202, and vice versa.

[0070] The second understanding is that, in the case that the position of the user's left eye visual field 201 is adjusted, or in the case that the position of the user's right eye visual field 202 is adjusted, that is, the position of the visual field of the same eye is adjusted at different times, which also belongs to a case of the "position-adjustable human eye visual field". Illustratively, taking the adjustment of the position of the user's left eye visual field 201 as an example, the position of the user's left eye visual field 201 is adjusted from a first position to a second position, the partitioned illumination module 5 forms a light-out region corresponding to the left eye visual field 201 at the first position, and the partitioned illumination module 5 also forms a light-out region corresponding to the left eye visual field 201 at the second position. The light-out region corresponding to the left eye visual field 201 at the first position and the light-out region corresponding to the left eye visual field at the second position do not appear at the same time. It can be understood that the light-out region corresponding to the left eye visual field 201 at the first position moves to the position of the light-out region corresponding to the left eye visual field 201 at the second position.

[0071] Both of the above two understandings belong to the scope protected by the embodiments of the present application.

[0072] In the embodiments of the present application, the image generation device includes an illumination assembly, and the illumination assembly includes a light source 7 that emits light rays, which are the basis for subsequent image formation. The light source 7 can be an LED light source or a laser light source.

[0073] The lighting assembly further comprises a sub-area lighting module 5 which receives light from the light source 7 and projects the light through light emitting areas to the corresponding eyebox. The light emitting areas are dynamically changed and can appear in different positions to project light carrying specific image information to the corresponding eyebox to avoid crosstalk.

[0074] In this embodiment, the light emitting areas are movable within the sub-area lighting module 5. The mobility of the light emitting areas enables the light emitting areas to correspond to the user’s eyebox in real time. In the case of adjustment of the position of the user’s eyebox, the light emitting areas of the sub-area lighting module 5 correspond to the adjusted position of the eyebox, and the light emitting areas corresponding to the unadjusted position of the eyebox disappear. Compared with the fixed light emitting areas which do not follow the adjustment of the position of the eyebox and crosstalk exists at the boundary of adjacent eyeboxes, the light emitting areas of the sub-area lighting module 5 of this embodiment are movable and adjustable according to the position of the eyebox, i.e. when the user’s eyebox is at any position in the eyebox, the light emitted by the light emitting areas only enters the corresponding eyebox to avoid crosstalk and improve energy utilization.

[0075] For example, referring to Figures 6-9 , the image generation device comprises a sub-area lighting module 5, and the light emitted by the light emitting areas of the sub-area lighting module 5 enters the user’s left eyebox 201 corresponding to the light emitting areas. When it is necessary to make the light emitting areas of the sub-area lighting module 5 correspond to the user’s right eyebox 202, the light emitting areas corresponding to the user’s left eyebox 201 are moved to the position corresponding to the user’s right eyebox 202. In the same sub-area lighting module 5, the light emitting areas corresponding to the user’s left eyebox 201 and the light emitting areas corresponding to the user’s right eyebox do not appear at the same time to avoid crosstalk.

[0076] For example, referring to Figures 6-9 and Figure 10 , when it is necessary to make the light emitting areas of the sub-area lighting module 5 correspond to the user’s left eyebox 201 at the next moment, the light emitting areas corresponding to the position of the user’s left eyebox 201 at the previous moment are moved to the position corresponding to the user’s left eyebox 201 at the next moment. The light emitting areas corresponding to the position of the user’s left eyebox 201 at the previous moment and the light emitting areas corresponding to the position of the user’s left eyebox 201 at the next moment do not appear at the same time to avoid crosstalk.

[0077] The principle of correspondence between the light emitting areas formed by the sub-area lighting module 5 and the user’s eyebox is as follows: the HUD system mainly comprises an image generation device (usually comprising a display screen 3) and an optical assembly 4. Referring to Figure 4The display screen 3 is used to display images, and the optical assembly 4 is responsible for magnifying and projecting the images to the front of the driver to form a virtual image plane 204. The virtual image plane 204 is located within the line of sight of the driver, so that the driver can view important information without having to lower his head. It can also be understood that the optical assembly 4 (image magnification) has a certain optical power, and according to the imaging relationship, the image displayed by the display screen 3 (object plane 1) is magnified and imaged in front of the human eye to form a virtual image plane 204 (image plane 1).

[0078] In addition, in the HUD system, the eyebox 200 corresponds to the exit pupil position, and the light-emitting area formed by the partitioned illumination module 5 corresponds to the stop position. The light-emitting area formed by the partitioned illumination module 5 can be regarded as an object plane (object plane 2), and the light emitted by the object plane 2 is magnified and imaged at the eyebox 200 position (image plane 2) after passing through the optical assembly 4. The eyebox 200 is the position range of the driver's eyes and is one of the key parameters of the HUD system design. Since the optical assembly 4 has a certain optical power, it can magnify and image the image of the light-emitting area (object plane 2) at the eyebox position according to the imaging relationship. This imaging process follows the basic principles of optical imaging, i.e. the relationship between object distance, image distance and focal length. In the HUD system, the design of the optical assembly 4 enables the image of the light-emitting area to be clearly imaged within the line of sight of the driver, i.e. in the eyebox 200. Further, the one-to-one correspondence between the human eye visual field (a part of the eyebox 200) and the light-emitting area can be determined according to the optical power of the optical assembly 4. Since the imaging characteristics of the optical assembly 4 are determined, the light emitted by each light-emitting area will pass through a specific path and be imaged at a specific position in the eyebox 200. In this way, we can control the imaging effect of the HUD system in the human eye visual field by adjusting the position and size of the light-emitting area. Generally, the image projected by the HUD is a virtual image located more than 2m in front of the human eye, and the light-emitting area is located below the display screen 3.

[0079] Therefore, in this embodiment, in the HUD system, the light-emitting position of the partitioned illumination module 5 of the image generation device has a one-to-one correspondence with the user's eye visual field. Based on the one-to-one correspondence between the two, the partitioned illumination module 5 is designed to form a movable light-emitting area, and the light-emitting area corresponds to the user's eye visual field in real time. In this way, only the illumination light corresponding to the user's eye visual field will enter the eyebox area, avoiding the image crosstalk problem in different visual fields.

[0080] In a specific embodiment, referring to Figure 2 When the user's left eye and right eye are located in different visual fields, three-dimensional display can be realized based on the principle of binocular parallax. Specifically, referring to Figure 2The user's left and right eyes see different images at the virtual image plane 204 (at a distance L from the human eye), which can form images at the first position A and the second position B, with imaging distances L1 and L2, respectively. Due to the difference in the positions of the two eyes and the complexity of the optical assembly 4, L1 and L2 are only conceptual distances used to describe how the brain interprets these images, and do not directly correspond to the physical imaging distances.

[0081] In one embodiment, referring to Figure 5 The partitioned illumination module 5 has a first direction equivalent to the horizontal direction of the eyebox, and a second direction equivalent to the vertical direction of the eyebox.

[0082] The light-emitting area is movable along the first direction, or the light-emitting area is movable along the second direction, or the light-emitting area is movable along a third direction, wherein the third direction, the first direction and the second direction are in the same horizontal plane, and the third direction has components in both the first direction and the second direction.

[0083] In this embodiment, the viewing area is divided in the horizontal direction of the eyebox 200, and can also be divided in both the horizontal direction and the vertical direction of the eyebox 200, or can also be divided only in the vertical direction of the eyebox 200. When the viewing area is divided in the vertical direction of the eyebox 200, it does not affect the stereoscopic effect of the image, but can affect the power consumption of the light source 7. For example, when the viewing area is divided in the vertical direction of the eyebox 200, only light rays need to be projected to the viewing area in the vertical direction of the eyebox 200, which can reduce the power consumption of the light source 7.

[0084] When the viewing area is divided in the horizontal direction of the eyebox 200, the size of the left and right eye viewing areas is 3mm to 60mm in the horizontal direction, with the minimum value close to the size of the human eye pupil and the maximum value not exceeding the human eye pupil distance. It should be emphasized that when the viewing area is divided in the horizontal direction of the eyebox, the user's left and right eyes move in the horizontal direction, which affects the stereoscopic effect of the image. For example, when the user's left and right eyes are in different viewing areas, the three-dimensional display of the image can be realized based on the principle of binocular parallax.

[0085] The position of the light emitting area needs to correspond to the position of the eyebox, so the light emitting area needs to move according to the change of the position of the eyebox during the movement. The first direction of the partitioned illumination module 5 is equivalent to the horizontal direction of the eyebox 200, which means that the movement in this direction is mainly used to adjust the position of the light emitting area in the horizontal plane, similar to moving the light emitting area in the left-right direction. The second direction of the partitioned illumination module 5 is equivalent to the vertical direction of the eyebox 200, and the movement in this direction is used to adjust the position of the light emitting area in the vertical direction, similar to moving the light emitting area in the up-down direction. The third direction is a composite direction, which is in the same horizontal plane as the first direction and the second direction, but neither purely horizontal nor purely vertical. This direction has components in both the first direction and the second direction, meaning that when the light emitting area is moved in this direction, there will be a change in position in both the horizontal and vertical directions.

[0086] For example, only the eyebox 200 is divided in the horizontal direction (a commonly used scheme), and the position of the eyebox 200 in the horizontal direction changes (for example, from a to b, or from a to c, etc.), and correspondingly, the light emitting area moves in the first direction of the partitioned illumination module 5.

[0087] For example, only the eyebox 200 is divided in the vertical direction (in this case, it does not affect 3D display, and is not a commonly used scheme), and the position of the eyebox 200 in the vertical direction changes (for example, from a to d, or from e to b, etc.), and correspondingly, the light emitting area moves in the second direction of the partitioned illumination module 5.

[0088] For example, referring to Figure 5 , both the eyebox 200 is divided in the horizontal direction and the eyebox 200 is divided in the vertical direction, and the position of the eyebox 200 in the vertical direction and the horizontal direction changes (for example, from a to e, or from c to d, etc.), and the light emitting area moves in the third direction of the partitioned illumination module 5, which can meet the case of moving in a diagonal direction.

[0089] It should be noted that the first direction and the second direction of the partitioned illumination module 5 are mainly determined according to the correspondence between the light emitting area and the eyebox. For example, the length direction of the light uniformizing component 50 (a feature to be described below) of the partitioned illumination module 5 is the first direction of the partitioned illumination module 5, and the width direction of the light uniformizing component 50 is the second direction of the partitioned illumination module 5.

[0090] In one embodiment, the shape of the light emitting area matches the shape of the corresponding eyebox of the light emitting area.

[0091] In this embodiment, the shape of the light-emitting area formed by the partitioned lighting module 5 is matched with the formation of the human eye's visual field, for example, the shape of the light-emitting area includes but is not limited to a rectangle or a rectangle with distortion or a parallelogram or other shapes.

[0092] Exemplarily, in the same partitioned lighting module 5, the shape of the light-emitting area corresponding to the user's left eye visual field 201 and the shape of the light-emitting area corresponding to the user's right eye visual field can be the same or can be different.

[0093] Or in two different partitioned lighting modules 5, the shape of the light-emitting area corresponding to the user's left eye visual field 201 formed in one partitioned lighting module 5 and the shape of the light-emitting area corresponding to the user's right eye visual field 202 formed in the other partitioned lighting module 5 can be the same or can be different.

[0094] Exemplarily, in the same partitioned lighting module 5, the shape of the light-emitting area corresponding to the position of the user's left eye visual field at the previous moment and the shape of the light-emitting area corresponding to the position of the user's left eye visual field at the next moment can be the same or can be different.

[0095] Exemplarily, in the same partitioned lighting module 5, the shape of the light-emitting area corresponding to the position of the user's right eye visual field at the previous moment and the shape of the light-emitting area corresponding to the position of the user's right eye visual field at the next moment can be the same or can be different.

[0096] In a specific embodiment, referring to Figures 6-9 , the image generation device only includes one partitioned lighting module 5, which forms a first light-emitting area 51 at the Nth moment, and the first light-emitting area 51 is configured to correspond to the user's left eye visual field 201.

[0097] The partitioned lighting module 5 forms a second light-emitting area 52 at the Mth moment, and the second light-emitting area 52 is configured to correspond to the user's right eye visual field 202, wherein the interval time between the Nth moment and the Mth moment is less than or equal to the human eye persistence time.

[0098] In this specific embodiment, the image generation device includes a partitioned lighting module 5, and the image generation device realizes time-sharing display through the partitioned lighting module 5, avoiding the image crosstalk problem of the user in different visual fields, and in addition, the image generation device combined with the subsequent optical assembly 4 can realize three-dimensional display and improve the display quality.

[0099] In particular, the partitioned lighting module 5 is capable of forming a specific optical area, i.e. the first light exit area 51, at a specific time (the Nth time). This area is carefully designed to correspond to the left eye visual zone 201 of the user, meaning that the light rays emitted by it are mainly intended to enhance or optimize the visual experience of the user's left eye. In addition, the partitioned lighting module 5 is capable of forming a specific optical area, i.e. the second light exit area 52, at a specific time (the Mth time). This area is carefully designed to correspond to the right eye visual zone 202 of the user, meaning that the light rays emitted by it are mainly intended to enhance or optimize the visual experience of the user's right eye.

[0100] Therefore, in this embodiment, the partitioned lighting module 5 is designed to form corresponding light exit areas for the user's left and right eyes at different times (based on the values of N and M) to achieve time-division display, so as to avoid the image crosstalk problem of the user in different visual zones.

[0101] The interval between the Nth time and the Mth time is less than or equal to the human eye persistence time. The human eye persistence time, also known as visual persistence or visual residue, refers to the phenomenon that when an object disappears in the field of view, its image will still be temporarily retained on the retina for a period of time. This length of time varies from person to person, but the approximate range is between 1 / 16 seconds and 1 / 24 seconds, with an average of about 1 / 10 seconds. This means that if the interval between two consecutive pictures is less than or equal to this persistence time, the human eye will connect these pictures to form a continuous dynamic image, rather than seeing independent static pictures.

[0102] In the case where the image generating device only includes one partitioned lighting module 5, this partitioned lighting module 5 undertakes the task of forming a light exit area corresponding to the left eye visual zone 201, and also undertakes the task of forming a light exit area corresponding to the right eye visual zone 202. For the same partitioned lighting module 5, the first light exit area 51 and the second light exit area 52 can be arranged separately, or the first light exit area 51 and the second light exit area 52 can partially overlap to form an overlapping area, wherein the overlapping area does not belong to the central area of the first light exit area 51, nor does it belong to the central area of the second light exit area 52.

[0103] In this embodiment, the first light exit area 51 and the second light exit area 52 are time-division light exit areas. On the basis of the time-division light exit of the two areas, the two light exit areas are arranged separately, which can further avoid the interference between the light rays in different visual zones, and ensure that each visual zone can receive clear and independent lighting effects. In addition, the separately arranged light exit areas help to simulate binocular parallax, thereby enhancing the stereoscopic effect of the visual content.

[0104] Although the first light-exit region 51 and the second light-exit region 52 do not appear at the same time, the first light-exit region 51 and the second light-exit region 52 can partially overlap in position. It is emphasized that during the imaging process, the area that the human eye gazes at is often the central area in the eyebox (the central area of the eyebox is the most sensitive and important area), and since the overlapping area in this embodiment does not appear in the central area of the eyebox, the images viewed by the human eye in different eyeboxes do not exhibit crosstalk. For example, the area of the overlapping area accounts for 1% to 5% or even less of the area of the edge of the eyebox.

[0105] In one embodiment, with reference to Figure 6 In the case where the user's left eyebox 201 is adjusted from the first position to the second position, the first light-exit region 51 formed by the partitioned illumination module 5 moves along with the user's left eyebox 201; and in the case where the user's right eyebox 202 is adjusted from the third position to the fourth position, the second light-exit region 52 formed by the partitioned illumination module 5 moves along with the user's right eyebox 202.

[0106] Illustratively, in the case where the user's left eyebox 201 is adjusted from the first position (dotted line position of the left eye) to the second position (solid line position of the left eye), the first light-exit region 51 (rectangular dotted line position) corresponding to the left eyebox 201 in the first position formed by the partitioned illumination module 5 moves to the first light-exit region 51 (rectangular solid line position) corresponding to the left eyebox 201 in the second position. These two first light-exit regions 51 do not appear at the same time, and their shapes can or can not be the same.

[0107] Illustratively, in the case where the user's right eyebox 202 is adjusted from the third position (dotted line position of the right eye) to the fourth position (solid line position of the right eye), the second light-exit region 52 (rectangular dotted line position) corresponding to the right eyebox 202 in the third position formed by the partitioned illumination module 5 moves to the second light-exit region 52 (rectangular solid line position) corresponding to the right eyebox 202 in the fourth position. These two second light-exit regions 52 do not appear at the same time, and their shapes can or can not be the same.

[0108] In one optional embodiment, with reference to Figures 6-9 The first light-exit region 51 corresponding to the left eyebox 201 in the first position and the first light-exit region 51 corresponding to the left eyebox 201 in the second position are arranged with an interval or partially overlap to form an overlapping area, wherein the overlapping area does not belong to the central areas of the two first light-exit regions 51.

[0109] The first light-exit area 51 corresponding to the left eye visual area 201 at the first position and the first light-exit area 51 corresponding to the left eye visual area at the second position are arranged in a spaced manner. This means that the two light-exit areas are spatially separated and have no direct overlapping part. Such a spaced arrangement further ensures that light can be correspondingly irradiated to different human eye visual areas, avoiding image crosstalk phenomenon during the movement of the human eye to different visual areas.

[0110] The first light-exit area 51 corresponding to the left eye visual area 201 at the first position and the first light-exit area 51 corresponding to the left eye visual area at the second position are arranged in a spaced manner. This means that the two light-exit areas are spatially separated and have no direct overlapping part. Such a spaced arrangement further ensures that light can be correspondingly irradiated to different human eye visual areas, avoiding image crosstalk phenomenon during the movement of the human eye to different visual areas.

[0111] In the first case, referring to Figure 6 , the first light-exit area 51 corresponding to the left eye visual area 201 at the first position and the first light-exit area 51 corresponding to the left eye visual area at the second position are arranged in a spaced manner. This means that the two light-exit areas are spatially separated and have no direct overlapping part. Such a spaced arrangement further ensures that light can be correspondingly irradiated to different human eye visual areas, avoiding image crosstalk phenomenon during the movement of the human eye to different visual areas.

[0112] In the second case, the first light-exit area 51 corresponding to the left eye visual area 201 at the first position and the first light-exit area 51 corresponding to the left eye visual area at the second position are partially overlapped, but such an overlap does not include the central area of the two light-exit areas, avoiding image crosstalk phenomenon during the movement of the human eye to different visual areas.

[0113] In another specific embodiment, referring to Figure 10 , the image generating device comprises two said partitioned illumination modules 5, which include a first partitioned illumination module 5a and a second partitioned illumination module 5b, and the first partitioned illumination module 5a and the second partitioned illumination module 5b can simultaneously emit light.

[0114] The first partitioned illumination module 5a forms a movable first sub light-exit area, and the second partitioned illumination module 5b forms a movable second sub light-exit area. The movable first sub light-exit area is configured to correspond to the position-adjustable user's left eye visual area 201. The movable second sub light-exit area is configured to correspond to the position-adjustable user's right eye visual area 202.

[0115] In this embodiment, the image generating device adopts two partitioned illumination modules 5, i.e. the first partitioned illumination module 5a and the second partitioned illumination module 5b, which are independently arranged, for example, the first partitioned illumination module 5a is arranged corresponding to the user's left eye, and the second partitioned illumination module 5b is arranged corresponding to the user's right eye, so that the first sub light-exit area corresponds to the user's left eye visual area 201, and the second sub light-exit area corresponds to the user's right eye visual area 202, and vice versa.

[0116] In addition, the first sub light-emitting area and the second sub light-emitting area can be movable, which means that they can be dynamically adjusted according to the head movement, eyeball position or other related parameters of the user. This flexibility ensures that the sub light-emitting areas can correspond to the user's eye view area in real time.

[0117] In particular, the mobility of the first sub light-emitting area and the second sub light-emitting area means that they can be dynamically adjusted according to the head movement, eyeball position or other related parameters of the user. This flexibility ensures that the sub light-emitting areas can correspond to the user's eye view area in real time.

[0118] In addition, in this embodiment, compared with the time-sharing display realized by one sub light-emitting module 5, the simultaneous display of binocular images can be realized by two sub light-emitting modules 5 which are independent of each other. The first sub light-emitting module 5a and the second sub light-emitting module 5b in the image generation device exhibit high synergy and accuracy. At the same time, the two modules work respectively, ensuring that the light rays emitted by each module are accurately projected into the view area corresponding to the user's left eye and right eye.

[0119] In an optional embodiment, in the case that the user's left eye view area 201 is adjusted from a first position to a second position, the first sub light-emitting area formed by the first sub light-emitting module 5a moves with the user's left eye view area 201, wherein the first sub light-emitting area corresponding to the left eye view area 201 at the first position and the first sub light-emitting area corresponding to the left eye view area 201 at the second position are arranged in a spaced manner, or partially overlap to form an overlapping area, wherein the overlapping area does not belong to the central area of the two first sub light-emitting areas.

[0120] In addition, in the case that the user's right eye view area 202 is adjusted from a third position to a fourth position, the second sub light-emitting area formed by the second sub light-emitting module 5b moves with the user's right eye view area 202, wherein the second sub light-emitting area corresponding to the right eye view area 202 at the third position and the second sub light-emitting area corresponding to the right eye view area 202 at the fourth position are arranged in a spaced manner, or partially overlap to form an overlapping area, wherein the overlapping area does not belong to the central area of the two second sub light-emitting areas.

[0121] In an embodiment, referring to Figures 6-9 , the sub light-emitting module 5 comprises a light homogenizing component 50 and a movable modulation component 53, which is located on the light entrance side of the light homogenizing component 50, or on the light exit side of the light homogenizing component 50, or is arranged on the light homogenizing component 50, to adjust the light-emitting area of the sub light-emitting module 5.

[0122] In this embodiment, the partitioned illumination module 5 includes a light homogenizing component 50 and a modulation component 53. The light emitted by the light source 7 can be transmitted to the light homogenizing component 50, and then transmitted to the modulation component 53 through the light homogenizing component 50, so as to adjust the light emitting area of the partitioned illumination module 5. Alternatively, the light emitted by the light source 7 can be transmitted to the modulation component 53 first, and then transmitted to the light homogenizing component 50 through the modulation component 53, so as to adjust the light emitting area of the partitioned illumination module 5. Specifically, by adjusting the setting position of the modulation component 53, the position of the light emitting area in the partitioned illumination module 5 can be changed. In addition, the shape of the light emitting area can also be adjusted by the modulation component 53. Optionally, by adjusting the modulation component 53, the shape of the light emitting area can include but is not limited to a rectangle, a rectangle with distortion, a parallelogram or other shapes, corresponding to the shape of the human eye visual field.

[0123] Specifically, the main function of the light homogenizing component 50 is to make the light distribution more uniform, and to reduce problems such as light spots and uneven light intensity. It is usually made of materials with high light transmittance and good scattering performance, such as optical glass, optical plastic, and specific materials such as diffusion sheet, microlens array, and ground glass. The design of the light homogenizing component 50 can ensure that the light can be effectively diffused and homogenized when passing through, thereby improving the illumination quality.

[0124] The modulation component 53 is movably arranged, which means that it can adjust parameters such as position, angle or shape as needed, so as to realize accurate control of the light emitting area. The modulation component 53 can be located on the light entering side, the light emitting side of the light homogenizing component 50, or arranged on the light homogenizing component 50, depending on the design requirements and implementation methods.

[0125] For example, when the modulation component 53 is located on the light entering side of the light homogenizing component 50, it can directly modulate the incident light, such as changing the direction, intensity or distribution of the light, so as to change parameters such as the position, size or shape of the light emitting area.

[0126] When the modulation component 53 is located on the light emitting side of the light homogenizing component 50, it can further modulate the light after the light has been homogenized. This design can more flexibly adjust the light emitting area, such as changing parameters such as the shape, size or position of the light spot.

[0127] In some designs, the modulation component 53 can be directly integrated on the light homogenizing component 50, such as through microstructure or special coating. This design can simplify the structure and reduce the cost, while realizing accurate optical modulation to change parameters such as the position, size or shape of the light emitting area.

[0128] For example, in a specific embodiment, when the image generating device only includes one partitioned illumination module 5, the image generating device also only includes one light homogenizing component 50 and a modulation component 53 corresponding to the light homogenizing component 50.

[0129] In another specific embodiment, in the case that the image generating device comprises two partitioned illumination modules 5, the image generating device can comprise two light uniformity components 50 and modulation components 53 corresponding to the light uniformity components 50.

[0130] In one specific embodiment, with reference to Figure 8 , the modulation component 53 comprises a diaphragm assembly, which is arranged on the light-incoming side or the light-outgoing side of the light uniformity component 50.

[0131] The diaphragm assembly comprises a first diaphragm 533 and a second diaphragm 534, both of which are movably arranged.

[0132] The first diaphragm 533 is movable to define a light-outgoing area corresponding to the left eye visual area 201 of the user, and the second diaphragm 534 is movable to define a light-outgoing area corresponding to the right eye visual area 202 of the user.

[0133] In this embodiment, the diaphragm assembly is placed on the light-incoming side or the light-outgoing side of the light uniformity component 50, which mainly functions to define the light-outgoing area by controlling the passing area of light, so as to ensure that only the area corresponding to the diaphragm arrangement position in the light uniformity component 50 emits light, and other areas do not emit light.

[0134] Exemplarily, in the case that the image generating device comprises only one partitioned illumination module 5, the image generating device comprises one light uniformity component 50, which corresponds to two diaphragms, one of which is used to define a light-outgoing area corresponding to the left eye visual area 201 of the user, and the other is used to define a light-outgoing area corresponding to the right eye visual area 202 of the user.

[0135] In the case that the image generating device comprises two partitioned illumination modules 5, the image generating device comprises two light uniformity components 50 and two diaphragms, each of which corresponds to one diaphragm, one of which is used to define a light-outgoing area corresponding to the left eye visual area 201 of the user, and the other is used to define a light-outgoing area corresponding to the right eye visual area 202 of the user.

[0136] Regardless of whether the image generating device comprises one partitioned illumination module 5 or two partitioned illumination modules 5, the image generating device comprises two diaphragms, and the distance between the two diaphragms can be adjusted to adapt to users with different interpupillary distances.

[0137] Specifically, the first diaphragm 533 is responsible for defining a light-outgoing area corresponding to the left eye visual area 201 of the user. By moving the first diaphragm 533, its position or shape can be adjusted to ensure that light only illuminates the left eye visual area 201 of the user, reducing the interference of light on the eyes and unnecessary energy consumption.

[0138] The second light barrier 534 is similar to the first light barrier 533, but it is designed for the user's right eye visual area 202. The movement of the second light barrier 534 can also adjust its position or shape to match the user's right eye visual area 202.

[0139] In this embodiment, the movement of the light barrier is controlled by mechanical, electromagnetic or other means, and the position and shape of the light barrier can be adjusted in real time according to the user's head position, eye position or other parameters to ensure that the light always accurately illuminates the user's binocular visual area.

[0140] Therefore, in this embodiment, the independent control of the first light barrier 533 and the second light barrier 534 allows the light area to be customized for the user's left eye and right eye respectively, avoiding image crosstalk between different visual areas.

[0141] In another specific embodiment, referring to Figure 7 , the modulation component 53 includes a mirror assembly, which is arranged on the light entrance side of the light homogenizing component 50;

[0142] The mirror assembly includes a first mirror group 531 and a second mirror group 532, both of which are movably arranged;

[0143] The light emitted by the first mirror group 531 is projected to the light homogenizing component 50 to form a light emitting area corresponding to the user's left eye visual area 201;

[0144] The light emitted by the second mirror group 532 is projected to the light homogenizing component 50 to form a light emitting area corresponding to the user's right eye visual area 202.

[0145] In this embodiment, the mirror assembly changes the propagation direction of the light by reflecting it, so that it can be projected to a specific area of the light homogenizing component 50 according to a predetermined path, to ensure that the light is emitted from a specific area of the light homogenizing component 50, and no light is emitted from other areas. Referring to Figure 7 , the first mirror group 531 and the second mirror group 532 are arranged along the optical axis.

[0146] Exemplarily, in the case where the image generating device only includes one sub-illumination module 5, the image generating device includes a light homogenizing component 50 corresponding to two mirror groups, one of which projects to a specific area of the light homogenizing component 50 corresponding to the user's left eye visual area 201, and the other projects to a specific area of the light homogenizing component 50 corresponding to the user's right eye visual area 202.

[0147] In the case where the image generating device comprises two partitioned illumination modules 5, the image generating device comprises two homogenizing components 50 and two mirror groups, wherein each homogenizing component 50 is correspondingly provided with a mirror group, and one of the mirror groups projects to a specific area of the homogenizing component 50 corresponding to the left eye visual field 201 of the user, and the other mirror group projects to a specific area of the homogenizing component 50 corresponding to the right eye visual field 202 of the user.

[0148] Whether the image generating device comprises one partitioned illumination module 5 or two partitioned illumination modules 5, the image generating device comprises two mirror groups, and the distance between the two mirror groups can be adjusted to adapt to users with different interpupillary distances.

[0149] Exemplarily, the first mirror group 531 is responsible for projecting light to the first area of the homogenizing component 50, which corresponds to the left eye visual field 201 of the user. By adjusting the position or angle of the first mirror group 531, the direction, intensity and distribution of the light projected to the left eye visual field 201 can be accurately controlled, thereby optimizing the user's visual experience.

[0150] The second mirror group 532 is similar to the first mirror group 531, but it is designed for the right eye visual field 202 of the user. The second mirror group 532 projects light to the second area of the homogenizing component 50, ensuring that the right eye also receives appropriate light. Similarly, by adjusting the second mirror group 532, accurate control of the light in the right eye visual field 202 can be achieved.

[0151] The embodiment can control the movement of the mirror groups by mechanical, electromagnetic or other means, and adjust their position or angle in real time to adapt to the user's head movement, eye position change or different visual needs.

[0152] In yet another specific embodiment, with reference to Figure 6 , the modulation component 53 comprises a light valve (not shown in the figure) arranged on the homogenizing component 50; the light valve is opened to form a light emitting area corresponding to the eye visual field of the user.

[0153] In this embodiment, the modulation component 53 is a light valve, which is an optical element capable of controlling the passage or blocking of light. When the light valve is opened, it allows light to pass through and forms a specific light emitting area; when the light valve is closed, it blocks the passage of light. In this embodiment, the light valve is used to form a light emitting area corresponding to the eye visual field of the user. Exemplarily, the light valve can be a liquid crystal light valve, or a mechanical light valve, etc.

[0154] Specifically, one part (or one of the group) of the light valve is designed to match the left eye visual area 201 of the user when it is turned on. This means that only the light corresponding to the left eye visual area 201 will be allowed to pass through the light valve and be projected onto the left eye of the user. Similarly, another part of the light valve (or one of the other group of light valves) is designed to correspond to the right eye visual area 202 of the user. In this way, only the light matching the right eye visual area 202 will be projected onto the right eye of the user when this part of the light valve is turned on.

[0155] Therefore, in this embodiment, by precisely controlling the opening and closing of the light valve, it can be ensured that only the light corresponding to the visual area of the user's eyes is projected out, avoiding the crosstalk phenomenon appearing in different visual areas.

[0156] In a specific embodiment, referring to Figure 3 , Figures 6-9 , the image generating device further comprises a display screen 3, and the light rays emitted by the light-emitting areas at different positions enter the display screen 3 and are emitted from the display screen 3 at different angles.

[0157] In this embodiment, the display screen 3 here serves as the final interface for light output, responsible for presenting the modulated light to the user in a visual form. After the light rays emitted by the light-emitting areas at different positions enter the display screen 3, they will be emitted from the display screen 3 at different angles according to the control of the modulation component 53, thereby forming an image with depth and stereoscopic effect.

[0158] Specifically, in the case where the image generating device includes a partitioned illumination module 5, the image generating device includes a display screen 3 corresponding to the different positions of the user's eye visual area, and the partitioned illumination module 5 forms light-emitting areas at different positions, which correspond to angles on the display screen 3. Here, the "angle" does not refer to the physical tilt angle of the display screen 3 itself, but to the angle between the light rays emitted from the surface of the display screen 3 and a certain reference direction (such as the normal direction). Since the light-emitting areas formed by the partitioned illumination module 5 have different positions and shapes, the light rays emitted by them will continue to propagate at different angles after entering the display screen 3.

[0159] That is, the light rays emitted by the light-emitting areas at different positions will enter the subsequent optical assembly 4 at different angles after passing through the display screen 3, and then enter the different visual areas of the eyebox. It can be understood that: the light-emitting areas at different positions have a one-to-one correspondence with the angles on the display screen 3, the angles on the display screen 3 have a one-to-one correspondence with the different visual areas of the eyebox, and thus the light-emitting areas have a one-to-one correspondence with the eye visual area.

[0160] In another specific embodiment, referring to Figure 10In the case that the image generating device comprises two partitioned illumination modules 5, the two partitioned illumination modules 5 are a first partitioned illumination module 5a and a second partitioned illumination module 5b, and the image generating device comprises a first display screen 31 and a second display screen 32.

[0161] The light rays emitted by the first sub-light emitting areas formed by the first partitioned illumination module 5a at different positions enter the first display screen 31 and are emitted from the first display screen 31 at different angles.

[0162] The light rays emitted by the second sub-light emitting areas formed by the second partitioned illumination module 5b at different positions enter the second display screen 32 and are emitted from the second display screen 32 at different angles.

[0163] In this embodiment, the first display screen 31 and the second display screen 32 here respectively serve as the final interface of the light ray output of the first partitioned illumination module 5a and the second partitioned illumination module 5b, and are responsible for presenting the modulated light rays to the user in a visual form. After the light rays emitted by the sub-light emitting areas at different positions enter the corresponding first display screen 31 or second display screen 32, the light rays are emitted from the corresponding display screen 3 at different angles according to the control of the modulation component 53, thereby forming an image with depth and stereoscopic effect.

[0164] Exemplarily, the first sub-light emitting areas formed by the first partitioned illumination module 5a correspond to the left eye visual field 201 of the user, and the first sub-light emitting areas at different positions have a one-to-one correspondence with the angles of the first display screen 31, the angles of the first display screen 31 have a one-to-one correspondence with the left eye visual field 201 in the eyebox, and thus the first sub-light emitting areas have a one-to-one correspondence with the left eye visual field 201 of the user.

[0165] The second sub-light emitting areas formed by the second partitioned illumination module 5b correspond to the right eye visual field 202 of the user, and the second sub-light emitting areas at different positions have a one-to-one correspondence with the angles of the second display screen 32, the angles of the second display screen 32 have a one-to-one correspondence with the right eye visual field 202 in the eyebox, and thus the second sub-light emitting areas have a one-to-one correspondence with the right eye visual field 202 of the user.

[0166] In the case that the image generating device comprises two partitioned illumination modules 5, further, the image generating device further comprises a light combining mirror 8, and the light combining mirror 8 receives the light rays emitted from the first display screen 31 and the second display screen 32.

[0167] In this embodiment, referring to Figure 10 , the image generating device comprises the light combining mirror 8, and the light combining mirror 8 can be a half-reflective half-transmissive mirror.

[0168] The light combiner 8 combines the image light rays from the first display screen 31 and the second display screen 32, so that the combined light rays are transmitted to the left eye viewing area 201 or the right eye viewing area 202 of the user through the same optical assembly 4. It should be noted that, referring to Figure 10 , the first display screen 31 and the second display screen 32 display left eye and right eye images respectively, and the dashed angle on the first display screen 31 and the second display screen 32 does not emit light, so as to avoid the phenomenon of image crosstalk caused by the intersection of the light rays emitted by the first display screen 31 and the second display screen 32.

[0169] In an optional embodiment, referring to Figures 6-9 , the image generation device further comprises a light distribution lens group 6, which is located between the partitioned illumination module 5 and the display screen 3, and further corrects the shape and position changes of the light emitting area caused by aberration.

[0170] In an optional embodiment, referring to Figure 9 , the light source 7 comprises a plurality of arrayed light source units 71, and each of the light source units 71 can be independently turned on and off.

[0171] The illumination area formed by the turned-on light source units 71 corresponds to the light emitting area formed by the partitioned illumination module 5.

[0172] In this embodiment, the light source 7 is designed as a highly flexible and controllable component, and the light source 7 comprises a plurality of arrayed light source units 71. This design allows each light source unit 71 to be independently turned on and off, that is, the light source units 71 corresponding to the light emitting area are selectively turned on, and the other light source units 71 are turned off, so as to reduce power consumption.

[0173] Specifically, when the light source units 71 are turned on, the light rays emitted by the light source units 71 form a specific illumination area, which corresponds to the light emitting area formed by the partitioned illumination module 5. This correspondence ensures that the illumination system can work according to the preset partition strategy, and each partition can obtain independent and accurate illumination control.

[0174] In a second aspect, the embodiments of the present application also provide a head-up display. The head-up display comprises the image generation device and the optical assembly 4, and the optical assembly 4 is used for projecting the light rays emitted by the image generation device to the eyebox.

[0175] In this embodiment, a head-up display is also provided, which comprises the image generation device and the optical assembly 4 defined above, and the optical assembly 4 is an imaging magnifying lens group, which can transmit the light rays to different viewing areas of the eyebox.

[0176] It should be noted that in this embodiment, the specific structure of the optical assembly 4 can not be limited, as long as the optical assembly 4 can project the image generated by the image generation device onto the transparent medium 203 (such as the windshield) in front of the driver through optical means.

[0177] In a third aspect, the embodiments of the present application also provide a vehicle. The vehicle comprises the head-up display as described above.

[0178] In a fourth aspect, the embodiments of the present application provide a display method. The display method comprises the following steps:

[0179] S1: obtaining the position of the eyebox of the human eye;

[0180] S2: adjusting the light-emitting area of the partitioned illumination module 5 according to the eyebox of the human eye;

[0181] S3: controlling the light source 7 to project light to the corresponding eyebox of the human eye.

[0182] In this embodiment, a display method is provided, which can avoid image crosstalk phenomenon between different eyeboxes.

[0183] In step S1, the system needs to accurately identify and track the position of the human eye, especially the center of the eyebox or the main gaze point. This can usually be achieved through means such as cameras, infrared sensors, eye tracking technology, etc. By tracking the position of the human eye in real time, the system can ensure that the subsequent light projection is always aimed at the eyebox of the user.

[0184] In step S2, after determining the position of the eyebox of the human eye, the system will then adjust the light-emitting area of the partitioned illumination module 5. The partitioned illumination module 5 can form a movable light-emitting area, and the partitioned illumination module 5 allows the system to perform local illumination as needed. In this step, the system will dynamically adjust the position, size or shape of the light-emitting area according to the position of the eyebox of the human eye, to ensure that only the area corresponding to the eyebox of the user will emit light.

[0185] In step S3, the system controls the light source 7 to emit light, and the light emitted by the light source 7 is projected to the position corresponding to the eyebox of the user through the partitioned illumination module 5, the display screen 3, the optical assembly 4, etc., to avoid image crosstalk phenomenon between different eyeboxes of the user.

[0186] The above embodiments mainly describe the differences between the various embodiments. The different optimization features of the various embodiments can be combined to form a more optimal embodiment as long as they are not contradictory. Considering the brevity of the writing, further description is omitted here.

[0187] While certain embodiments of the application have been described herein in detail, those skilled in the art will appreciate that modifications can be made without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

1. An image generation apparatus, characterized in that, include: The lighting components include a light source (7) and a zoned lighting module (5); The light emitted from the light source (7) is projected onto the partition lighting module (5); The partitioned lighting module (5) has a movable light-emitting area, which is configured to correspond to the position-adjustable human eye visual area; The zoned lighting module (5) includes a light-diffusing component (50) and a movable modulation component (53), the modulation component (53) being used to adjust the light-emitting area of ​​the zoned lighting module (5); The modulation component (53) includes a mirror assembly, which is disposed on the light-incident side of the light-uniforming component (50); The reflector assembly includes a first reflector group (531) and a second reflector group (532), both of which are movable. The light emitted from the first reflector group (531) is projected onto the light-diffusing component (50) to form a light-emitting area corresponding to the left eye visual zone (201); The light emitted from the second reflector group (532) is projected onto the light-diffusing component (50) to form a light-emitting area corresponding to the right eye visual zone (202); Alternatively, the modulation component (53) may include an aperture assembly, which is disposed on the light-incident side or the light-outcident side of the light-uniforming component (50); The aperture assembly includes a first aperture (533) and a second aperture (534), both of which are movable. The first aperture (533) is movable to define the light-emitting area corresponding to the left eye visual area (201), and the second aperture (534) is movable to define the light-emitting area corresponding to the right eye visual area (202).

2. The image generation apparatus according to claim 1, characterized in that, The partitioned lighting module (5) has a first direction equivalent to the horizontal direction of the eye box and a second direction equivalent to the vertical direction of the eye box; The light-emitting area is movable along the first direction, or the light-emitting area is movable along the second direction, or the light-emitting area is movable along a third direction, wherein the third direction, the first direction, and the second direction are located on the same horizontal plane, and the third direction has components in both the first direction and the second direction.

3. The image generation apparatus according to claim 1, characterized in that, The shape of the light-emitting area matches the shape of the corresponding human eye visual field.

4. The image generation apparatus according to claim 1, characterized in that, Includes a partitioned illumination module (5) that forms a first light-emitting area (51) at time N, the first light-emitting area (51) being configured to correspond to the left eye visual area (201); The partition lighting module (5) forms a second light-emitting area (52) at time M, the second light-emitting area (52) being configured to correspond to the right eye visual area (202), wherein the interval between time N and time M is less than or equal to the human eye persistence time.

5. The image generation apparatus according to claim 4, characterized in that, The first light-emitting region (51) and the second light-emitting region (52) are spaced apart, or the first light-emitting region (51) and the second light-emitting region (52) partially overlap to form an overlapping region, wherein the overlapping region does not belong to the central region of the first light-emitting region (51) nor to the central region of the second light-emitting region (52).

6. The image generation apparatus according to claim 4, characterized in that, When the left eye visual area (201) is adjusted from the first position to the second position, the first light-emitting area (51) formed by the partition lighting module (5) moves with the left eye visual area (201); as well as When the right eye visual area (202) is adjusted from the third position to the fourth position, the second light-emitting area (52) formed by the partition lighting module (5) moves with the right eye visual area (202).

7. The image generation apparatus according to claim 1, characterized in that, The image generation device includes two partitioned lighting modules (5), each of which includes a first partitioned lighting module (5a) and a second partitioned lighting module (5b). The first partitioned lighting module (5a) and the second partitioned lighting module (5b) can emit light simultaneously. The first zone lighting module (5a) forms a movable first sub-light-emitting area, and the second zone lighting module (5b) forms a movable second sub-light-emitting area; The movable first sub-light-emitting area is configured to correspond to the position-adjustable left eye visual area (201); The movable second sub-light-emitting area is configured to correspond to the position-adjustable right eye visual zone (202).

8. The image generating apparatus according to any one of claims 1-7, characterized in that, The image generating device also includes a display screen (3), and light emitted from light-emitting areas at different positions enters the display screen (3) and exits from the display screen (3) at different angles.

9. The image generating apparatus according to any one of claims 1-7, characterized in that, When the image generating device includes two partition lighting modules (5), the two partition lighting modules (5) are a first partition lighting module (5a) and a second partition lighting module (5b), and the image generating device includes a first display screen (31) and a second display screen (32). The light emitted from the first sub-light-emitting areas at different positions formed by the first partition lighting module (5a) enters the first display screen (31) and exits from the first display screen (31) at different angles; The light emitted from the second sub-light-emitting areas at different positions formed by the second partition lighting module (5b) enters the second display screen (32) and exits from the second display screen (32) at different angles.

10. The image generation apparatus according to claim 9, characterized in that, The image generating device further includes a light combiner (8) for receiving light emitted from the first display screen (31) and the second display screen (32).

11. A head-up display, characterized in that, The head-up display includes an image generating device and an optical component (4) as described in any one of claims 1-10, wherein the optical component (4) is used to project light emitted from the image generating device onto the visual field of the human eye.

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