Head-up display system with continuously changing eye distance and vehicle

Abstract

The present application relates to vehicle-mounted optical display device, specifically disclose a kind of head-up display system and vehicle of image distance continuous variation, wherein, head-up display system of image distance continuous variation includes image output unit, image reflection unit, imaging screen (3) and perception system, image output unit includes image generator and display screen (12), display screen is curved screen, image generator issues image source via image reflection unit reflection to imaging screen, form up and down oblique in the direction of sight longitudinal depth of human eye and in up and down direction image distance from far to near arrangement virtual image (4);Image output unit is electrically connected with perception system, image output unit can be according to the distance data of augmented reality target object measured by perception system real-time adjustment augmented reality icon (41) in virtual image position.The head-up display system of image distance continuous variation of the present application can keep visual coincidence between virtual image and entity all the time, and interactive experience is good.

Description

Technical Field

[0001] This invention relates to in-vehicle optical display devices, and more specifically, to a head-up display system with continuously varying image distance. Furthermore, this invention also relates to a vehicle. Background Technology

[0002] Using head-up display (HUD) systems in cars and other vehicles displays information such as vehicle speed, fuel consumption, and navigation in front of the driver's line of sight. Compared to the method where the driver needs to look down to look at the dashboard to obtain information such as vehicle speed and fuel consumption, using an HUD system is more conducive to driving safety.

[0003] To further improve the human-computer interaction experience and driving safety, a head-up display system is proposed to use augmented reality to mark obstacles, warning signs, and other information in the traffic environment on the head-up display screen. This allows the virtual image displayed by the head-up display system to overlap with the real road conditions in the environment from the human eye's perspective, thereby realizing augmented reality functionality and further improving driving safety.

[0004] Existing display systems can either only form a virtual image at a fixed position, allowing the human eye to perceive the positional difference between the virtual image and the actual object; or they can form virtual images at two positions, but the overall structure of the display system is complex; or they cannot display virtual images at multiple positions simultaneously, still failing to effectively meet the need to reduce the positional difference between the virtual image and the actual object. In addition, some technical solutions use multiple mirrors to adjust the image distance of the virtual image in real time to ensure the overlap between the virtual image and the actual object during dynamic processes, but their structure is too complex.

[0005] Therefore, it is necessary to design a head-up display system with continuously varying image distance. Summary of the Invention

[0006] The technical problem to be solved by the first aspect of the present invention is to provide a head-up display system with continuously changing image distance, so as to maintain visual overlap between the virtual image and the physical object during the movement of the head-up display system, thereby improving the interactive experience.

[0007] The technical problem to be solved by the second aspect of the present invention is to provide a vehicle that has good driving safety and a good interactive experience.

[0008] To address the aforementioned technical problems, the first aspect of this invention provides a head-up display system with continuously varying image distances, comprising an image output unit, an image reflection unit, an imaging screen, and a sensing system. The image output unit includes an image generator for emitting virtual reality augmented image sources and a display screen, wherein the display screen is a curved screen. The image source emitted by the image output unit is reflected by the image reflection unit to the imaging screen, forming a virtual image arranged vertically at an angle in the depth direction of the human eye's line of sight, with the image distance of the virtual image arranged from far to near in the vertical direction. The image output unit is electrically connected to the sensing system, which is used to measure the distance of augmented reality targets. The image output unit can adjust the position of the augmented reality icon on the image surface of the virtual image in real time based on the measurement data of the sensing system.

[0009] Specifically, the image output unit further includes an image output unit reflector, and the image source emitted by the image generator is reflected onto the display screen via the image output unit reflector to form a virtual reality augmented image on the display screen.

[0010] Preferably, the display screen can be rotated up and down to adjust the angle between the virtual image and the horizontal plane.

[0011] More preferably, the angle between the virtual image and the horizontal plane is 10° to 40°.

[0012] More preferably, the image reflection unit includes a first reflector and a second reflector, the image source is reflected onto the imaging screen sequentially via the first reflector and the second reflector, and at least one of the first reflector and the second reflector has a curved reflective surface.

[0013] Optionally, the reflecting surface of the first reflector is curved, and the length and width of the image formed by the image source reflected from the first reflector to the second reflector are greater than the length and width of the image formed by the image source on the first reflector.

[0014] Optionally, the reflecting surface of the second reflector is curved, and the length and width of the image formed by the image source reflected onto the imaging screen via the second reflector are greater than the length and width of the image formed by the image source on the second reflector.

[0015] Preferably, the first reflector can be rotated up and down to adjust the angle between the virtual image and the horizontal plane.

[0016] More preferably, the display screen is a diffuse screen, which has a microstructure array capable of diffusing light at a set angle, so that the length and width of the image formed by the image source on the first reflector are both greater than the length and width of the image formed by the image source on the diffuse screen.

[0017] Furthermore, in a first aspect, the present invention provides a vehicle comprising a head-up display system with continuously varying image distance as described in any of the above technical solutions, wherein the imaging screen in the head-up display system with continuously varying image distance is a windshield.

[0018] Through the above technical solution, the first aspect of the present invention provides a head-up display system with continuously varying image distance. The system includes an image output unit, an image reflection unit, an imaging screen, and a sensing system. The image source emitted by the image output unit is reflected to the imaging screen by the image reflection unit, forming a virtual image arranged vertically and horizontally in the depth direction of the human eye's line of sight. The image distance of the virtual image is arranged from far to near in the vertical direction. Furthermore, the image output unit can adjust the position of the augmented reality icon on the image surface of the virtual image according to the measurement data of the sensing system. This allows the augmented reality icon within the virtual image range to always maintain visual overlap with the corresponding augmented reality target object during the movement of the head-up display system, thereby reducing the positional difference between the virtual image and the actual object and improving the human-computer interaction experience. In addition, since the virtual image is formed by the refraction of the virtual reality augmented image through the imaging screen, it is prone to tilt aberration. Therefore, the display screen is set as a curved screen, so that the optical path of the image in different areas of the imaging screen entering the human eye can be basically consistent, thereby effectively eliminating tilt aberration and improving the imaging quality.

[0019] The vehicle provided by the second aspect of the present invention has all the technical points of the head-up display system with continuously varying image distance as described in the above technical solution. In addition, the driver can observe the virtual image of the virtual reality augmented image through the windshield. Therefore, the driver can obtain relevant prompts without looking down while driving, thereby improving driving safety and also having a good human-computer interaction experience.

[0020] Other advantages of the present invention and the technical effects of preferred embodiments will be further described in the following detailed description. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the principle of a head-up display system with continuously varying image distance according to the present invention;

[0022] Figure 2 This is an axial view of a head-up display system with continuously varying image distance according to the present invention;

[0023] Figure 3 This is a perspective view of the driver's perspective of a head-up display system with continuously varying image distance according to the present invention;

[0024] Figure 4 yes Figure 1A magnified view of a section at point A in the middle;

[0025] Figure 5 This is a layout diagram of the image display content in a head-up display system with continuously varying image distance according to the present invention.

[0026] Explanation of reference numerals in the attached figures

[0027] 12-Display screen 21-First reflector

[0028] 22-Second reflecting mirror 3-Imaging screen

[0029] 4-Virtual Image 41-Augmented Reality Icon

[0030] 42 - First Augmented Reality Icon 43 - Second Augmented Reality Icon

[0031] 5-Horizontal plane 6-First position of augmented reality target

[0032] 7- Augmented Reality Target Second Position Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0034] First, it should be noted that the "width" direction of the "first reflector 21" and "second reflector 22" mentioned below is consistent with the width direction of the vehicle; in addition, the "front and rear" directions mentioned below are consistent with the length direction of the vehicle, and the "up and down" directions mentioned below are consistent with the height direction of the vehicle.

[0035] like Figure 1 and Figure 4 As shown, in one embodiment of the head-up display system with continuously varying image distance provided in the first aspect of the present invention, the head-up display system with continuously varying image distance includes an image output unit 1, an image reflection unit, an imaging screen 3, and a sensing system. The image output unit includes an image generator (not shown in the figure) for emitting virtual reality augmented image sources and a display screen 12. The display screen 12 is a curved screen. After the image source emitted by the image output unit is reflected to the imaging screen 3 by the image reflection unit 2, it can form a virtual image 4 arranged vertically and horizontally in the depth direction of the human eye's line of sight. The image distance of the virtual image 4 is arranged from far to near in the vertical direction. The image output unit is electrically connected to the sensing system. The sensing system is used to measure the distance of the augmented reality target object. The image output unit can adjust the position of the augmented reality icon 41 on the image surface of the virtual image 4 in real time according to the measurement data of the sensing system.

[0036] Through the above technical solution, in the head-up display system with continuously varying image distance provided by the first aspect of the present invention, the image source emitted by the image output unit is reflected onto the imaging screen 3 by the image reflection unit, and can form a virtual image 4 arranged vertically and horizontally in the depth direction of the human eye's line of sight. The image distance of the virtual image 4 is arranged from far to near in the vertical direction, and the image output unit can adjust the position of the augmented reality icon 41 on the image surface of the virtual image 4 according to the measurement data of the perception system, such as... Figure 1 As shown, when the augmented reality target is located at the first position 6, the augmented reality icon corresponding to the target on the virtual image 4 is located at the first augmented reality icon 42. When the target moves to the second position 7, the corresponding icon moves to the second icon 43. This ensures that the augmented reality icon 41 within the virtual image range always maintains visual overlap with the corresponding target during the movement of the head-up display system, thereby reducing the positional difference between the virtual image 4 and the entity. In particular, the image output unit models the augmented reality environment and labels the augmented reality icon 41 using human perspective. The image source that generates the virtual reality image based on human perspective ensures that the size of the augmented reality icon 41 and the size of the target remain visually consistent, improving the human-computer interaction experience. Furthermore, since the virtual image 4 is formed by the refraction of the augmented reality image through the imaging screen 3, it is prone to tilt aberrations, i.e., large field curvature, astigmatism, and distortion due to the tilt of the components in different directions. Therefore, the display screen 12 is set as a curved screen. The curved screen 12 can be concave or convex. The specific setting is based on the mutual compensation relationship between the entire imaging optical system: that is, the imaging screen 3, the first reflecting mirror 21, the second reflecting mirror 22 and the curved screen 12, so that they can cooperate with each other to achieve the image quality requirements of image clarity and setting distortion.

[0037] Specifically, such as Figure 4As shown, in the head-up display system with continuously varying image distance provided in the first aspect of the present invention, the image output unit further includes an image output unit reflector (not shown in the figure). The image source emitted by the image generator is reflected onto the display screen 12 via the image output unit to form a virtual reality augmented image on the display screen 12. The image generator is used to emit a virtual reality augmented image source, which is reflected onto the display screen 12 via the image output unit reflector to form a virtual reality augmented image on the display screen 12. This design allows the display screen 12 in the image output unit to only function as an imaging screen, displaying the image of the virtual reality augmented image source emitted by the image generator, without needing to be configured as a display screen capable of emitting the image source, thereby greatly reducing costs. Furthermore, displaying the virtual reality augmented image source emitted by the image generator on the display screen 12 facilitates the adjustment of the distance between the virtual reality augmented image and the first reflector 21, ensuring that the distance range of the real road conditions covered by the formed virtual image meets the design requirements.

[0038] Preferably, such as Figure 4 As shown, in the head-up display system with continuously varying image distance provided in the first aspect of the present invention, the display screen 12 can be rotated up and down to adjust the angle between the display screen 12 and the first reflector 21, thereby adjusting the angle between the virtual image 4 and the horizontal plane 5. This allows the head-up display system with continuously varying image distance to adjust the coverage of the virtual image 4 in the depth direction and vertical direction of the human eye's line of sight according to the actual usage scenario. Generally, the angle between the virtual image 4 and the horizontal plane 5 can be set from 10° to 40°. Taking the application of the head-up display system with continuously varying image distance of the present invention to a vehicle as an example, when the vehicle is driving on a congested urban road, the distance between vehicles is small, so the virtual image 4 does not need to have a large coverage area in the depth direction of the human eye's line of sight. Therefore, the angle between the virtual image 4 and the horizontal plane 5 can be increased by rotating the display screen 12, for example, to 40°. ° means reducing the coverage area of ​​the virtual image 4 in the depth direction of the human eye's line of sight, while increasing the coverage area of ​​the virtual image 4 in the vertical direction, making it easier for the virtual image 4 to cover objects such as roadside signs and traffic lights above the road. When vehicles are traveling on highways, due to the larger distance between vehicles and the stricter control of vehicle distance on highways, the virtual image 4 needs to have a larger coverage area in the depth direction of the human eye's line of sight. Therefore, the angle between the virtual image 4 and the horizontal plane 5 can be reduced by rotating the display screen 12, for example, increasing it to 10°. This increases the coverage area of ​​the virtual image 4 in the depth direction of the human eye's line of sight, while reducing the coverage area of ​​the virtual image 4 in the vertical direction, so that the virtual image 4 can better display vehicles ahead and display and warn of vehicle distance. Moreover, the range of vehicle distance that can be displayed and warned is larger, resulting in higher safety.

[0039] Specifically, such as Figure 1 and Figure 4 As shown, in the head-up display system with continuously varying image distance provided in the first aspect of the present invention, the image reflection unit includes a first reflector 21 and a second reflector 22. The image source is reflected onto the imaging screen 3 in sequence via the first reflector 21 and the second reflector 22, and at least one of the first reflector 21 and the second reflector 22 has a curved reflective surface. Generally, the reflective surface of the first reflector 21 can be curved, so that the length and width of the image formed by the image source reflected from the first reflector 21 onto the second reflector 22 are greater than the length and width of the image formed by the image source on the first reflector 21; or, the reflective surface of the second reflector 22 can be curved, so that the length and width of the image formed by the image source reflected from the second reflector 22 onto the imaging screen 3 are greater than the length and width of the image formed by the image source on the second reflector 22; of course, it can be understood that the reflective surfaces of the first reflector 21 and the second reflector 22 can be designed as curved surfaces at the same time, so that the image source can be magnified twice after passing through the first reflector 21 and the second reflector 22, thereby making the image formed on the imaging screen 3 have a larger image area, that is, making the virtual image 4 cover a larger area, and enabling users to obtain a better interactive experience.

[0040] In the head-up display system with continuously varying image distance provided in the first aspect of the present invention, the display screen 12 can preferably be configured as a diffuse screen. Since the diffuse screen has a microstructure array that can diffuse light at a set angle, the length and width of the image formed by the image source on the first reflector 21 are both larger than the length and width of the image formed by the image source on the diffuse screen. As a result, the image formed by the image source reflected onto the imaging screen 3 has a larger image area, that is, the virtual image 4 can cover a larger area, and the user can obtain a better interactive experience.

[0041] like Figure 4As shown, in the head-up display system with continuously varying image distance provided in the first aspect of the present invention, the first reflecting mirror 21 can be configured to be adjustable by rotating up and down, so that the angle between the virtual image 4 and the horizontal plane 5 can be changed by rotating the first reflecting mirror 21. This allows the head-up display system with continuously varying image distance to adjust the coverage of the virtual image 4 in the depth direction and vertical direction of the human eye's line of sight according to the actual usage scenario. Of course, it is understood that the second reflecting mirror 22 can also be configured to be adjustable by rotating up and down, so that the angle between the virtual image 4 and the horizontal plane 5 can be changed by rotating the second reflecting mirror 22. The angle between the virtual image 4 and the horizontal plane 5; In addition, taking the head-up display system with continuously changing image distance of the present invention as an example of applying it to measurement, the imaging screen 3 is the windshield. The first reflector 21 or the second reflector 22 is configured to be able to rotate up and down, and the imaging position of the image source on the imaging screen 3 can also be changed. That is, the vertical height of the image on the imaging screen 3 can be adjusted according to the height of the user (driver), so that the height of the center position of the image on the imaging screen 3 can correspond to the height of the driver's eyeball, so that the driver can observe the virtual image 4.

[0042] The second aspect of the present invention provides a vehicle having the aforementioned head-up display system with continuously varying image distance, such as... Figure 1 As shown, when the aforementioned continuously variable image distance head-up display system is applied to a vehicle, the imaging screen 3 is the vehicle's windshield. Specifically, this continuously variable image distance head-up display system can display vehicle status information such as vehicle speed and engine speed on the windshield, and can also enhance the display of road information such as lane markings, so that the driver can obtain vehicle status information without looking down. With the assistance of a multi-virtual-image augmented reality display system, road information can be obtained quickly and efficiently, thereby improving driving safety. In addition, using the windshield as the imaging screen simplifies the structure of the continuously variable image distance head-up display system and eliminates the need for an additional imaging screen between the driver's eyes and the windshield, avoiding obstruction of the view by an additional imaging screen, thereby further improving driving safety.

[0043] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A head-up display system with continuous variation of the eye distance, characterized in that The image output unit, the image reflection unit, the imaging screen (3) and the perception system, the image output unit includes an image generator and a display screen (12) for emitting a virtual reality augmented image source, the display screen (12) is a curved screen, the image source emitted by the image output unit is reflected to the imaging screen (3) via the image reflection unit, and can form a virtual image (4) arranged obliquely up and down in the longitudinal direction of the line of sight of the human eye, and the image distance of the virtual image (4) is arranged from far to near in the up and down direction; the image output unit is electrically connected with the perception system, the perception system is used for measuring the distance of the augmented reality target object, and the image output unit (1) can adjust the position of the augmented reality icon (41) on the image plane of the virtual image (4) in real time according to the measurement data of the perception system; The display screen (12) can be adjusted up and down to adjust the included angle between the virtual image (4) and the horizontal plane (5), to adjust the coverage range of the virtual image (4) in the longitudinal direction of the line of sight of the human eye, and the coverage range of the virtual image (4) in the up and down height direction, so that the virtual image (4) can cover the road surface and the objects on the roadside and above the road at the same time; The image reflection unit includes a first mirror (21) and a second mirror (22), the image source is reflected to the imaging screen (3) via the first mirror (21) and the second mirror (22) in turn, and the reflecting surface of at least one of the first mirror (21) and the second mirror (22) is curved; The reflecting surface of the first mirror (21) is curved, and the length and width of the image formed by the image source reflected to the second mirror (22) via the first mirror (21) are greater than the length and width of the image formed by the image source on the first mirror (21); The reflecting surface of the second mirror (22) is curved, and the length and width of the image formed by the image source reflected to the imaging screen (3) via the second mirror (22) are greater than the length and width of the image formed by the image source on the second mirror (22); The display screen (12) is a diffusing screen, which has a microstructure array capable of diffusing light according to a set angle; the display screen (12) makes the length and width of the image formed by the image source on the first mirror (21) greater than the length and width of the image formed by the image source on the diffusing screen.

2. The eye-fidelity varying head-up display system of claim 1, wherein, The image output unit further includes an image output unit mirror, the image source emitted by the image generator is reflected to the display screen (12) via the image output unit mirror to form a virtual reality augmented image on the display screen (12).

3. The eye-far consistent variation head-up display system of claim 2, wherein, The included angle between the virtual image (4) and the horizontal plane (5) is 10˚ to 40˚.

4. The eye-farage-continuously-varying head-up display system of claim 1, wherein, The first mirror (21) can be adjusted up and down to adjust the included angle between the virtual image (4) and the horizontal plane (5).

5. A vehicle characterized by comprising: The head-up display system with continuously changing image distance according to any one of claims 1 to 4, wherein the imaging screen (3) is a windshield.

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