Display device, control method thereof, and vehicle

Abstract

The invention relates to the technical field of head-up display, particularly provides a display device and a control method thereof, and a vehicle, and aims to solve the problem of visual convergence and discomfort caused by limited imaging distance of an existing image display device. In order to achieve the purpose, the display device comprises a first image source and a first adjusting assembly which are arranged in sequence; the first adjusting assembly comprises an adjusting mirror and a driving part, light emitted by the first image source is emitted after passing through the adjusting mirror, and the adjusting mirror is used for adjusting the optical path of the light; the driving part is in transmission connection with the adjusting mirror, and the driving part is used for driving the adjusting mirror to move, so that the position of the adjusting mirror through which the light passes is changed, and the virtual image imaging distance is adjusted. Therefore, the virtual image imaging distance can be matched with the distance of the environmental object, the virtual image is closer to the environmental object, the problem of visual convergence is not caused, and a user does not feel uncomfortable.

Description

Technical Field

[0001] The present invention relates to the technical field of head-up display, and specifically provides a display device and a control method thereof, and a vehicle. Background Art

[0002] Head up display (HUD), also known as head-up display. By projecting the image light emitted by the image source of the HUD onto an imaging window (such as the windshield of a vehicle), the image is formed in front of the user's line of sight, and the user can directly see the virtual image without lowering his head, thereby improving the user experience. For example, in some cases, the driver can avoid being distracted by looking down at the dashboard while driving, thereby improving the driving safety factor and also providing a better driving experience.

[0003] In order to make the UI displayed by the HUD (such as navigation signs, lane lines, POI signs, etc.) better fit with the real objects in the environment, the vehicle is equipped with an AR HUD, which can form images at different distances. For example, by setting two image sources with different optical distances relative to the magnifying element, virtual images at different imaging distances can be achieved.

[0004] Existing AR HUDs are divided into two categories. One is fake AR HUD, which is a HUD with only one virtual image (i.e., a virtual image with only one imaging distance). Through visual processing methods such as near is larger and far is smaller, the UI is visually overlapped with the real scene in the environment. However, this method has poor real-world effects and the visual experience is not good enough. Figure 1 The double-layer AR HUD shown in the figure includes a far-layer image source 10, a near-layer image source 20, a light combining mirror 30 and an amplifying element 40. The near-layer image source and the far-layer image source can form two layers of virtual images (i.e., a near-layer virtual image 50 and a far-layer virtual image 60) respectively. Such a HUD can display different UIs on virtual images at different imaging distances to achieve the effect of augmented reality. However, the imaging distance of this method is still limited. For example, the imaging distance of the far-layer virtual image 60 is 12 meters, and the actual distance between the intersection and the user is 20 meters. In this case, when the intersection UI is displayed on the far-layer virtual image 60, the actual imaging distance of the intersection UI is 12 meters, and the real intersection is 20 meters. Due to the different actual distances between the two, although the size of the intersection UI can be changed through the principle of visual perspective, so that the UI visually appears to overlap with the real intersection in space, the actual focal length of the intersection UI seen by the eyes is still the focal length corresponding to 12 meters. In this case, it is easy to cause visual convergence problems, which will make the user feel uncomfortable.

[0005] Therefore, there is an urgent need for a display device and a control method thereof, and a vehicle to solve the above technical problems. Summary of the invention

[0006] The present invention aims to solve the above technical problem, that is, to solve the problem that the imaging distance of the existing image display device is limited, resulting in visual convergence and discomfort.

[0007] In a first aspect, the present invention provides a display device, the display device comprising a first image source and a first adjustment component arranged in sequence;

[0008] The first adjustment component includes an adjustment mirror and a driving member, the light emitted by the first image source is emitted after passing through the adjustment mirror, and the adjustment mirror is used to adjust the optical path of the light;

[0009] The driving member is in driving connection with the adjusting mirror, and is used to drive the adjusting mirror to move, so that the position of the adjusting mirror through which the light passes changes, so as to adjust the imaging distance of the virtual image.

[0010] In a specific implementation of the above display device, the optical path of the adjusting mirror gradually changes along an arc direction, along a length direction or along an array direction.

[0011] In a specific embodiment of the above display device, the first adjustment component includes an adjustment mirror and a driving member, and the adjustment mirror includes a plurality of adjustment parts with different optical paths;

[0012] The driving member is in driving connection with the adjusting mirror, and is used to drive the adjusting mirror to move, switch the adjusting part through which the light passes, so as to adjust the imaging distance of the virtual image.

[0013] In a specific implementation of the above display device, the plurality of adjustment parts are arranged in a ring shape or an arc shape, and the driving member drives the adjustment mirror to rotate to switch the adjustment part through which the light passes.

[0014] In a specific implementation of the above display device, the driving member is a driving motor, and its output shaft is connected to the adjusting mirror, so that the driving member drives the adjusting mirror to rotate.

[0015] In a specific implementation of the above display device, the plurality of adjustment parts are arranged in an array, and the driving member drives the adjustment mirror to move in a plane to switch the adjustment part through which the light passes.

[0016] In a specific implementation of the above display device, the optical path of each position of the adjusting mirror is controlled by controlling the thickness and the refractive index of the adjusting portion.

[0017] In a specific embodiment of the above display device, the thicknesses and / or refractive indices of the plurality of adjustment parts are different.

[0018] In a specific embodiment of the above display device, the plurality of adjustment parts have different thicknesses and the same refractive index.

[0019] In a specific embodiment of the above display device, the plurality of adjustment parts have different refractive indices and the same thickness.

[0020] In a specific embodiment of the above-mentioned display device, it also includes a light combining mirror, which is arranged on the side of the first adjustment component away from the first image source. The light emitted by the first image source passes through the adjustment mirror and is emitted after being optically processed by the light combining mirror.

[0021] In a specific embodiment of the above-mentioned display device, it also includes a second image source, which is arranged on one side of the light combining mirror. The light emitted by the second image source is emitted toward the light combining mirror and is emitted after being optically processed by the light combining mirror. The maximum optical path of the second image source is smaller than the minimum optical path of the first image source.

[0022] In a specific embodiment of the above display device, it also includes a second adjustment component, which is arranged between the second image source and the light combining mirror, and the structure of the second adjustment component is the same as that of the first adjustment component.

[0023] In a specific embodiment of the above display device, it also includes an amplifying element, which is arranged on a side of the light combining mirror away from the first image source, and the light processed by the light combining mirror is amplified by the amplifying element and then emitted to form an image.

[0024] In a second aspect, the present invention provides a control method for the display device as described above, the control method comprising the following steps:

[0025] Get the distance of the environmental objects that need to be displayed;

[0026] determining the optical path length of the light according to the distance;

[0027] Determining a required optical path of the first adjustment component according to the optical path;

[0028] According to the required optical path, the optical path portion corresponding to the first adjustment component is determined to be on the optical path of the first image source, so that the light of the first image source passes through the corresponding optical path portion.

[0029] In a second aspect, the present invention provides a control method for the display device as described above, the control method comprising the following steps:

[0030] Get the distance of the environmental objects that need to be displayed;

[0031] Determine the required image source and optical path length of the light according to the distance;

[0032] According to the required image source, determine the adjustment components that need to be adjusted;

[0033] According to the optical path, it is determined that the optical path portion corresponding to the corresponding adjustment component is on the optical path of the corresponding image source, so that the light of the corresponding image source passes through the corresponding optical path portion.

[0034] In a third aspect, the present invention provides a vehicle comprising a display device as described above.

[0035] When adopting the above technical solution, the display device of the present invention includes a first image source and a first adjustment component which are arranged in sequence; the light emitted by the first image source is emitted after passing through the first adjustment component, and the first adjustment component is used to adjust the optical path of the light emitted by the first image source to adjust the imaging distance of the virtual image; the imaging distance of the virtual image can be matched with the distance of the environmental object, so that the virtual image is closer to the environmental object, which will not cause visual convergence problems and will not make the user feel uncomfortable.

[0036] The first adjustment component includes an adjustment mirror and a driving member, the adjustment mirror includes multiple adjustment parts with different optical paths; the driving member is transmission-connected to the adjustment mirror, the multiple adjustment parts are arranged in a ring or arc shape, the driving member drives the adjustment mirror to rotate, and switches the adjustment part through which the light passes, so that the virtual image imaging distance can match the distance of the environmental object.

[0037] In addition, the multiple adjustment parts are arranged in a ring shape, which can reduce the space occupied, making it more suitable for the narrow space of the vehicle, and making the display device have a wider application range.

[0038] Solution 1. A display device, characterized in that it comprises a first image source (1) and a first adjustment component (3) arranged in sequence;

[0039] The first adjustment component (3) comprises an adjustment mirror (32) and a driving member (31); the light emitted by the first image source (1) is emitted after passing through the adjustment mirror (32); and the adjustment mirror (32) is used to adjust the optical path of the light;

[0040] The driving member (31) is in driving connection with the adjusting mirror (32), and the driving member (31) is used to drive the adjusting mirror (32) to move, so as to change the position of the adjusting mirror (32) through which the light passes, so as to adjust the imaging distance of the virtual image.

[0041] Solution 2. The display device according to Solution 1 is characterized in that the optical path of the adjustment mirror (32) gradually changes along the arc direction, along the length direction or along the array direction.

[0042] Solution 3. The display device according to Solution 1 is characterized in that the adjustment mirror (32) includes a plurality of adjustment parts (321) with different optical paths; the driving member (31) drives the adjustment mirror (32) to move, switching the adjustment part (321) through which the light passes, so as to adjust the imaging distance of the virtual image.

[0043] Solution 4. The display device according to Solution 3 is characterized in that the multiple adjustment parts (321) are arranged in a ring shape or an arc shape, and the driving member (31) drives the adjustment mirror (32) to rotate, thereby switching the adjustment part (321) through which the light passes.

[0044] Solution 5. The display device according to Solution 3 is characterized in that the driving member (31) is a driving motor, and its output shaft is connected to the adjusting mirror (32) so that the driving member (31) drives the adjusting mirror (32) to rotate.

[0045] Solution 6. The display device according to Solution 3 is characterized in that the multiple adjustment parts (321) are arranged in an array, and the driving member (31) drives the adjustment mirror (32) to move in a plane to switch the adjustment part (321) through which the light passes.

[0046] Solution 7. The display device according to Solution 2 or 3 is characterized in that the optical path of each position of the adjustment mirror (32) is controlled by controlling the thickness and refractive index of the adjustment portion (321).

[0047] Solution 8. The display device according to Solution 3 is characterized in that the thickness and / or refractive index of the multiple adjustment parts (321) are different.

[0048] Solution 9. The display device according to Solution 3 is characterized in that the thicknesses of the multiple adjustment parts (321) are different and the refractive index is the same.

[0049] Solution 10. The display device according to Solution 3 is characterized in that the multiple adjustment parts (321) have different refractive indices and the same thickness.

[0050] Solution 11. The display device according to Solution 2 or 3 is characterized in that it also includes a light combining mirror (4), which is arranged on the side of the first adjustment component (3) away from the first image source (1), and the light emitted by the first image source (1) is emitted toward the light combining mirror (4) after passing through the adjustment mirror (32), and is emitted after being optically processed by the light combining mirror (4).

[0051] Solution 12. The display device according to Solution 11 is characterized in that it also includes a second image source (2), which is arranged on one side of the light combining mirror (4), and the light emitted by the second image source (2) is emitted toward the light combining mirror (4), and is emitted after being optically processed by the light combining mirror (4), and the maximum optical path of the second image source (2) is smaller than the minimum optical path of the first image source (1).

[0052] Solution 13. The display device according to Solution 12 is characterized in that it also includes a second adjustment component, which is arranged between the second image source (2) and the light combining mirror (4), and the second adjustment component has the same structure as the first adjustment component (3).

[0053] Solution 14. The display device according to Solution 13 is characterized in that it also includes an amplifying element (5), which is arranged on the side of the light combining mirror (4) away from the first image source (1), and the light processed by the light combining mirror (4) is amplified by the amplifying element (5) and then emitted to form an image.

[0054] Solution 15. A control method for a display device according to any one of Solution 1 to Solution 14, characterized in that the control method comprises the following steps:

[0055] Get the distance of the environmental objects that need to be displayed;

[0056] determining the optical path length of the light according to the distance;

[0057] Determining the required optical path of the first adjustment component (3) according to the optical path;

[0058] According to the required optical path, the optical path portion corresponding to the first adjustment component (3) is determined on the optical path of the first image source (1), so that the light of the first image source (1) passes through the corresponding optical path portion.

[0059] Solution 16. A control method for a display device according to Solution 13 or 14, characterized in that the control method comprises the following steps:

[0060] Get the distance of the environmental objects that need to be displayed;

[0061] Determine the required image source and optical path length of the light according to the distance;

[0062] According to the required image source, determine the adjustment components that need to be adjusted;

[0063] According to the optical path, it is determined that the optical path portion corresponding to the corresponding adjustment component is on the optical path of the corresponding image source, so that the light of the corresponding image source passes through the corresponding optical path portion.

[0064] Option 17. A vehicle, characterized in that it includes a display device as described in any one of Options 1-13. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0066] Figure 1 It is a structural schematic diagram of a display device in the prior art;

[0067] Figure 2 is a schematic structural diagram of a display device provided in Embodiment 1 of the present invention;

[0068] Figure 3 is a schematic structural diagram of an adjusting mirror provided in Embodiment 1 of the present invention;

[0069] Figure 4 is a flow chart of a method for controlling a display device provided in Embodiment 1 of the present invention;

[0070] Figure 5 It is a flow chart of a method for controlling a display device provided in the second embodiment of the present invention.

[0071] List of reference numerals:

[0072] 10. Far layer image source; 20. Near layer image source; 30. Light combining mirror; 40. Magnifying element; 50. Near layer virtual image; 60. Far layer virtual image;

[0073] 1. First image source; 2. Second image source; 3. First adjustment component; 31. Driving member; 32. Adjustment mirror; 321. Adjustment part; 322. Connection part; 4. Light combining mirror; 5. Magnification element; 7. Near-layer virtual image; 8. Far-layer virtual image. DETAILED DESCRIPTION

[0074] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0075] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0076] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In order to solve the problem of limited imaging distance of existing image display devices, which leads to visual convergence and discomfort, the present invention discloses a display device and a control method thereof, and a vehicle. The vehicle of the present invention will be described in detail with three embodiments below.

[0078] Embodiment 1

[0079] This embodiment discloses a vehicle, which includes a display device and a windshield, wherein the windshield serves as a display medium of the display device.

[0080] Among them, Figure 2 As shown, the display device includes a first image source 1, a first adjustment component 3 and a light combining mirror 4 which are arranged in sequence.

[0081] The light emitted by the first image source 1 is emitted to the light combining mirror 4 after passing through the first adjustment component 3, and then is imaged after being optically processed by the light combining mirror 4. The first adjustment component 3 is used to adjust the optical path of the light emitted by the first image source 1 to adjust the virtual image imaging distance.

[0082] Among them, the first adjustment component 3 includes an adjustment mirror 32 and a driving member 31, and the adjustment mirror 32 includes multiple adjustment parts 321 with different optical paths; wherein the driving member 31 is transmission connected to the adjustment mirror 32, and the driving member 31 is used to drive the adjustment mirror 32 to move and switch the adjustment part 321 through which the light passes to adjust the virtual image imaging distance.

[0083] Specifically, Figure 3 As shown, the adjustment part 321 is in the shape of a fan ring, and multiple adjustment parts 321 are arranged in a ring or arc shape. The output end of the driving member 31 is connected to the center of the adjustment mirror 32. The driving member 31 is specifically a servo motor or a stepping motor, and its output shaft is connected to the center of the adjustment mirror 32, so that the driving member 31 drives the adjustment mirror 32 to rotate and switches the adjustment part 321 through which the light passes. The adjustment mirror 32 also includes a connecting part 322. When the multiple adjustment parts 321 are in the shape of a ring, the connecting part 322 is in the shape of a disk, and the multiple adjustment parts 321 are arranged on the outer circumference of the connecting part 322 and fixed on the connecting part 322. Specifically, the adjustment part 321 can be fixed on the connecting part 322 by bonding or clamping, and the connecting part 322 is connected to the output end of the driving member 31. So that the starter drives the connecting part 322 to rotate, the multiple adjustment parts 321 can be driven to rotate, so that the light emitted by the first image source 1 passes through the corresponding adjustment part 321 and then projects to the light combining mirror 4. In order to enable the adjustment part 321 to effectively adjust the optical path of the light, the area of ​​the adjustment part 321 should cover the area of ​​the light; specifically, the width in each direction is greater than the width of the light. The adjustment mirror 32 is set in a disc or ring shape, which can reduce the space occupied by the first adjustment component 3, so that it can be applied to a wider range of vehicles with smaller space.

[0084] Although in the present embodiment, the output end of the driving motor is directly connected to the connecting part 322, this is not a limitation of the present invention. Without departing from the principles of the present invention, in other embodiments, those skilled in the art may choose to connect the output end of the driving motor to the connecting part 322 through a gear assembly, which does not deviate from the basic principles of the present invention and falls within the protection scope of the present invention.

[0085] The optical path of the adjustment portion 321 is controlled by changing the thickness and refractive index of the adjustment portion 321 .

[0086] In this embodiment, the plurality of adjustment parts 321 are all plane lenses, which can ensure that the imaging is relatively normal without distortion. In other embodiments, the plane lens can also be a curved mirror of equal thickness, but the curved mirror may produce distortion, and the smaller the curvature, the smaller the distortion.

[0087] The thickness of the multiple adjustment parts 321 is different, but the refractive index of the multiple adjustment parts 321 is the same. The multiple adjustment parts 321 are arranged in sequence from thick to thin along the circumference of the connecting part 322. The thickness of the adjustment part 321 is determined according to the optical path to be adjusted and the thickness of the adjustment part 321. The number of the adjustment parts 321 is determined according to the total required adjustment amount of the optical path and the number of levels to be adjusted. The more the total required adjustment amount and the number of levels, the more the number of the adjustment parts 321. The less the total required adjustment amount and the number of levels, the fewer the number of the adjustment parts 321.

[0088] It should be noted that regarding the optical path setting of the adjustment part 321, although in this embodiment, the thickness of the adjustment part 321 is changed by thickness to achieve different optical path arrangements; but this is not a limitation of the present invention. In other embodiments, the thickness of multiple adjustment parts 321 can be made basically the same, but the refractive index of multiple adjustment parts 321 is different, and the optical paths of multiple adjustment parts 321 are made different by controlling the refractive index. Among them, multiple adjustment parts 321 are arranged in sequence from low to high along the circumference of the connecting part 322. In other embodiments, the thickness and refractive index of multiple adjustment parts 321 can also be different; and multiple adjustment parts 321 are arranged in sequence from low to high along the circumference of the connecting part 322. The above methods can all realize the arrangement of multiple adjustment parts 321 with different optical paths, which do not deviate from the basic principles of the present invention and will fall within the protection scope of the present invention.

[0089] The display device further includes a light combining mirror 4, which is arranged on a side of the first adjustment component 3 away from the first image source 1. The light emitted by the first image source 1 is emitted to the light combining mirror 4 after passing through the adjustment unit 321, and is emitted after being optically processed by the light combining mirror 4. Specifically, it is emitted to form an image after being refracted by the light combining mirror 4.

[0090] The display device further includes an amplifying element 5, which is disposed on a side of the light combining mirror 4 away from the first image source 1. The light processed by the light combining mirror 4 is amplified by the amplifying element 5 and then emitted to form an image. Specifically, the light emitted by the first image source 1 passes through the adjustment unit 321, and then shines toward the light combining mirror 4, and then shines toward the amplifying element 5 after being refracted by the light combining mirror 4, and then forms an image after being amplified by the amplifying element 5. The amplifying element 5 is a conventional amplifying element 5 in the optical field, and the specific structure is not repeated here.

[0091] Furthermore, the display device also includes a second image source 2, wherein the second image source 2 is a near-layer image source, which is mainly used to image the scene near the vehicle to form a near-layer scene 7. The first image source 1 is a far-layer image source, which is mainly used to image the scene far away from the vehicle to form a far-layer scene 8; the maximum optical path of the second image source 2 is smaller than the minimum optical path of the first image source 1; and the optical paths of the two image sources can be seamlessly connected, so that the imaging is relatively continuous, which can improve the user experience. The second image source 2 is mainly used for imaging and displaying vehicle condition information. The first image source 1 is mainly used for guide signs, lane lines and POI signs, which are relatively far away and need to be matched with the environmental distance to be more vivid and meet people's visual requirements.

[0092] The first image source 1 is arranged on one side of the first surface of the light combining mirror 4, and the light emitted is refracted by the light combining mirror 4 and then directed to the magnifying element 5. The second image source 2 is arranged on one side of the second surface of the light combining mirror 4, and the light emitted by the second image source 2 is directed to the light combining mirror 4, and then is optically processed by the light combining mirror 4 and then directed to the magnifying element 5, and then is magnified by the magnifying element 5 to form an image.

[0093] like Figure 4 As shown, the control method of the display device includes the following main steps:

[0094] S1. Obtain the distance of the environmental object to be displayed;

[0095] S2. Determine the optical path of the light according to the distance; specifically, the distance of the environmental object is the equivalent object distance, that is, the distance of the environmental object is the optical path of the light.

[0096] S3 . According to the above optical path, determine the required optical path of the first adjustment component 3 . Specifically, the optical path minus the optical path of the light in the air minus the optical path of the light in the light combining mirror 4 = the required optical path of the first adjustment component 3 .

[0097] S4. According to the required optical path, determine that the optical path portion corresponding to the first adjustment component 3 is on the optical path of the first image source 1, so that the light of the first image source 1 passes through the corresponding optical path portion. Select the adjustment portion 321 closest to the required optical path as the target adjustment portion 321, and drive the target adjustment portion 321 to move to the optical path of the light emitted by the first image source 1 by the driving member 31, so that the imaging distance of the first image source 1 corresponds to the distance of the environmental object.

[0098] Since the scene in front of the vehicle changes gradually during the driving process, but the optical path of two adjacent adjustment parts 321 jumps, the scene in front of the vehicle will change suddenly when the adjustment parts are switched, affecting the visual effect. To solve this problem, the displayed scene can be animated according to the moving trend and moving speed of the vehicle, so that the displayed scene is animated, which can ensure that the displayed scene is continuous and the visual effect is guaranteed.

[0099] Embodiment 2

[0100] This embodiment discloses a vehicle, which has a structure substantially the same as that of the vehicle in the first embodiment, except that the optical path of the second image source 2 can be adjusted by a second adjustment component.

[0101] Specifically, the display device also includes a second adjustment component, which is arranged between the second image source 2 and the light combining mirror 4. The second adjustment component has the same structure as the first adjustment component 3; the difference is that the optical path of the adjustment part 321 of the second adjustment component is designed according to the required optical path of the second image source 2.

[0102] like Figure 5 As shown, the control method of the display device specifically includes the following steps:

[0103] S1. Obtain the distance of the environmental object to be displayed;

[0104] S2. Determine the required image source and the optical path of light according to the distance; specifically, the distance of the environmental object is the equivalent object distance, that is, the distance of the environmental object is the optical path of light. If the optical path of light is greater than the maximum optical path of the second image source 2, the required image source is the first image source 1; if the optical path of light is not greater than the maximum optical path of the second image source 2, the required image source is the second image source 2.

[0105] S3. Determine the adjustment component that needs to be adjusted according to the required image source; if the required image source is the first image source 1, the adjustment component that needs to be adjusted is the first adjustment component 3; if the required image source is the second image source 2, the adjustment component that needs to be adjusted is the second adjustment component.

[0106] S4. According to the above optical path, determine that the corresponding optical path portion of the corresponding adjustment component is on the optical path of the corresponding image source, so that the light of the corresponding image source passes through the corresponding optical path portion. When the adjustment component to be adjusted is the first adjustment component 3, select the adjustment part 321 closest to the required optical path as the target adjustment part 321, and make the driving member 31 drive the target adjustment part 321 to move to the optical path of the first image source 1, so that the imaging distance of the first image source 1 corresponds to the distance of the environmental object. When the adjustment component to be adjusted is the second adjustment component, select the adjustment part 321 closest to the required optical path as the target adjustment part 321, and make the driving member 31 drive the target adjustment part 321 to move to the optical path of the second image source 2, so that the imaging distance of the second image source 2 corresponds to the distance of the environmental object.

[0107] Embodiment 3

[0108] This embodiment discloses a vehicle, which has a structure substantially the same as that of the vehicle in the first embodiment, except for the arrangement of the multiple adjustment parts 321 .

[0109] The plurality of adjustment parts 321 are arranged in an array, and the driving member 31 drives the adjustment mirror 32 to move in a plane, switching the adjustment part 321 through which the light passes.

[0110] When the number of the adjustment parts 321 is small and the layout space allows, the multiple adjustment parts 321 are arranged along a straight line, and the multiple adjustment parts 321 are fixed on the long strip connection part 322 by clamping or bonding. The driving member 31 can be a linear driving member 31, and can be an electric cylinder, and the output end of the electric cylinder is connected to the connection part 322. Alternatively, a rack is provided on the connection part 322, and the driving member 31 is a driving motor, and a gear is provided at the output end of the driving motor, and the connection part 322 is driven to move along a straight line by the gear rack, so that the corresponding adjustment part 321 moves to the optical path of the first image source 1.

[0111] When the number of adjustment parts 321 is large or the layout space does not allow, multiple adjustment parts 321 can be arranged in multiple rows and columns, and the adjustment mirror 32 is driven to move by a linear drive mechanism in two directions to adjust the adjustment part 321 corresponding to the first image source 1. Specifically, the driving member 31 includes two linear drive components, wherein the adjustment mirror 32 is arranged at the output end of one linear drive component, and the linear drive component is arranged at the output end of another linear drive component, and the driving directions of the two linear drive components are arranged vertically. The linear drive component is specifically an electric cylinder.

[0112] Embodiment 4

[0113] This embodiment discloses a vehicle, which has a structure that is basically the same as that of the vehicle in the first embodiment, except that the structure of the adjustment mirror 32 does not include an adjustment portion 321; instead, the optical path changes continuously. Specifically, the optical path of the adjustment mirror 32 gradually changes along the arc direction, along the length direction, or along the array direction. In this embodiment, preferably, the optical path of the adjustment mirror 32 gradually changes along the circumferential direction. Specifically, the refractive index of the adjustment mirror 32 is the same, that is, the material is the same, and the change of the optical path is achieved by controlling the thickness of each position of the adjustment mirror 32.

[0114] The structure of the driving member 31 and the connection structure with the adjusting mirror 32 are the same as those in the first embodiment.

[0115] The adjustment mirror 32 is divided into several areas in the circumferential direction, each area corresponds to an optical path; the area does not need to cover the light emitted by the image source, and the light can be irradiated through the adjacent area. Since the optical path of the adjustment mirror changes gradually, the image formed will be distorted after the light passes through the adjustment mirror 32, so the image corresponding to each area needs to be pre-processed to ensure that the image will not be significantly distorted and the visual effect is guaranteed.

[0116] The control method of the display device in this embodiment is the same as the control method in the first embodiment.

[0117] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A display device, characterized in that: It comprises a first image source (1) and a first adjustment component (3) which are arranged in sequence; The first adjustment component (3) comprises an adjustment mirror (32) and a driving member (31); the light emitted by the first image source (1) is emitted after passing through the adjustment mirror (32); and the adjustment mirror (32) is used to adjust the optical path of the light; The driving member (31) is in driving connection with the adjusting mirror (32), and the driving member (31) is used to drive the adjusting mirror (32) to move, so as to change the position of the adjusting mirror (32) through which the light passes, so as to adjust the imaging distance of the virtual image.

2. The display device according to claim 1, characterized in that The optical path of the adjusting mirror (32) gradually changes along the arc direction, along the length direction or along the array direction.

3. The display device according to claim 1, characterized in that The adjusting mirror (32) comprises a plurality of adjusting parts (321) with different optical paths; the driving member (31) drives the adjusting mirror (32) to move, switching the adjusting part (321) through which the light passes, so as to adjust the imaging distance of the virtual image.

4. The display device according to claim 3, characterized in that: The plurality of adjustment parts (321) are arranged in a ring shape or an arc shape, and the driving member (31) drives the adjustment mirror (32) to rotate, thereby switching the adjustment part (321) through which the light passes.

5. The display device according to claim 3, characterized in that: The driving member (31) is a driving motor, and its output shaft is connected to the adjusting mirror (32), so that the driving member (31) drives the adjusting mirror (32) to rotate.

6. The display device according to claim 3, characterized in that: The plurality of adjustment parts (321) are arranged in an array, and the driving member (31) drives the adjustment mirror (32) to move within a plane, thereby switching the adjustment part (321) through which the light passes.

7. The display device according to claim 2 or 3, characterized in that: By controlling the thickness and refractive index of the adjusting portion (321), the optical path of each position of the adjusting mirror (32) is controlled.

8. The display device according to claim 3, characterized in that: The thickness and / or refractive index of the multiple adjustment parts (321) are different.

9. The display device according to claim 3, characterized in that: The plurality of adjustment parts (321) have different thicknesses and the same refractive index.

10. The display device according to claim 3, characterized in that: The plurality of adjustment parts (321) have different refractive indices and the same thickness.

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