CN108663807B - Head-up display optical system and apparatus and imaging method thereof - Google Patents
Head-up display optical system and apparatus and imaging method thereof Download PDFInfo
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- CN108663807B CN108663807B CN201710208846.8A CN201710208846A CN108663807B CN 108663807 B CN108663807 B CN 108663807B CN 201710208846 A CN201710208846 A CN 201710208846A CN 108663807 B CN108663807 B CN 108663807B
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- G—PHYSICS
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
- G02B30/35—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using reflective optical elements in the optical path between the images and the observer
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Abstract
A head-up display optical system and apparatus and an imaging method thereof, wherein the head-up display optical system includes: at least two image generating units; and at least two reflectors, wherein each image generation unit and at least one reflector cooperate to project imaging light to a light receiving surface to form a virtual image, and the virtual images cooperate with each other, so that a user can perceive the imaging light forming each virtual image and stereoscopic imaging formed by the virtual images.
Description
Technical Field
The present invention relates to an in-vehicle device for a motor vehicle, and more particularly, to a Head-Up Display optical system and a Head-Up Display (HUD) capable of performing stereoscopic imaging, and an imaging method thereof.
Background
Head-up displays or HUDs project information relating to the driving or flying of a vehicle or aircraft onto a glass using the principle of optical reflection so that the contents of the instrument panel in the lower position of the vehicle or aircraft are displayed in the upper position, thus enabling the driver to see all the required safety information (such as vehicle speed, engine RPM, temperature and fuel quantity) without lowering his head, reducing delays and discomfort between lowering his head and raising head due to neglecting rapid changes in the environment and requiring constant adjustment of the eye focus.
The early HUD was mainly used for an airplane, and in recent years, the head-up display is more applied to an automobile as the automobile is continuously developed and popularized.
However, in the conventional head-up display, based on the basic imaging principle, the displayed image is only planar, or the user sees a planar effect when viewing the image. From the aspect of human visual perception, it is known that people usually have a lighter impression for a flat image and a darker impression for a stereoscopic image. For example, the same mountain view, the display effect of capturing a planar image is significantly less than that obtained by providing a real stereoscopic view.
This natural response, which is derived naturally from the brain, is difficult to change, i.e. on the one hand, it is easier for people to understand the stereo image, and on the other hand, people are not good at accurately restoring the planar image to the stereo image. For these fundamental reasons, the effect of stereoscopic imaging is better in general in the sense that the user is expected to get a deeper and closer impression of the displayed content, which is not achievable with the existing head-up displays.
Traditional HUD's appearance is in order to let the driver need not go to the head down just can see some information that want to know to in order to guarantee the safety of traveling, but, except safe driving, along with road traffic is more and more complicated, help people more convenient, correct form, it is the function that HUD need realize also to reduce to go no erratically, but the present HUD goes up the information of a kind of speed or simple route navigation of display speed, can not solve these problems. For the majority of people, in an unfamiliar course or
Anxiety emotion easily appears under the condition of traffic jam, and in the condition, the vehicle is easy to go wrong or miss an intersection only by navigation according to plane prompt, and when the vehicle is on a highway, a lot of trouble can be brought to missing one intersection. How to enable the driver to receive information quickly and correctly is a problem that the HUD needs to solve.
Disclosure of Invention
An object of the present invention is to provide a monoscopic display optical system and apparatus and an imaging method thereof, which form at least two sets of optical paths during imaging to form at least two virtual images, and the virtual images are matched with each other, so that virtual stereoscopic imaging can be performed within a certain range, thereby improving the driver's attention to display contents.
An object of the present invention is to provide a heads-up display optical system and apparatus and an imaging method thereof, wherein the heads-up display apparatus includes at least two image generating units and at least two mirrors, each of the mirrors and the imaging unit forming an imaging optical path, each of the imaging optical paths being independent of each other.
An object of the present invention is to provide a flat display optical system and apparatus and an imaging method thereof, in which one reflecting mirror is a compound free-form surface mirror, so that at least the compound free-form surface mirror is shared by two sets of optical paths, thereby reducing the volume occupied by the two sets of optical paths.
An object of the present invention is to provide a monoscopic display optical system and apparatus and an imaging method thereof, in which the reflecting mirror is a free-form surface mirror so that the virtual stereoscopic image is enlarged or reduced.
An object of the present invention is to provide a monoscopic display optical system and apparatus and an imaging method thereof, in which two sets of optical paths form two virtual images having close distances, and the close virtual images cooperate with each other to form a stereoscopic image.
The invention aims to provide a head-on display optical system, a head-on display optical device and an imaging method thereof, wherein two sets of optical paths form a virtual image with a short distance and a virtual image with a long distance, and the two virtual images with a large distance difference are matched with each other to form three-dimensional imaging, so that the head-on display optical system has a better depth of field effect.
An object of the present invention is to provide a monoscopic display optical system and apparatus and an imaging method thereof, in which virtual stereoscopic imaging is combined with an actual environment to guide a driving situation of a driver more accurately by virtual stereoscopic image information.
An object of the present invention is to provide a monoscopic display optical system and apparatus and an imaging method thereof, in which an effect of virtual stereoscopic imaging is achieved by forming at least two virtual images such that the two need to be in predetermined positions, and splicing the virtual images, and stereoscopic imaging is observed by human eyes within a predetermined range.
To achieve at least one of the above objects, an aspect of the present invention provides a flat-display optical system, including: at least two image generating units; and at least two reflectors, wherein each image generation unit and at least one reflector cooperate to project imaging light to a light receiving surface to form a virtual image, and the virtual images cooperate with each other, so that a user can perceive the imaging light forming each virtual image and stereoscopic imaging formed by the virtual images.
According to some embodiments, the head-up display optical system includes two image generation units, a first image generation unit and a second image generation unit, a first mirror and a second mirror, wherein the first image generation unit and the first mirror cooperate to form a first virtual image, and the second image generation unit and the first mirror and the second mirror cooperate to form a second virtual image.
According to some embodiments, the head-up display optical system, wherein the first mirror is a compound free-form surface mirror.
According to some embodiments, the head-up display optical system, wherein the second mirror is a single free-form surface mirror.
According to some embodiments, the head-up display optical system, wherein the second mirror is a compound free-form surface mirror.
According to some embodiments, the head-up display optical system includes three image generation units, a first image generation unit, a second image generation unit, a third image generation unit, and three reflection mirrors, a first reflection mirror, a second reflection mirror, and a third reflection mirror, wherein the first image generation unit and the first reflection mirror cooperate to form a first virtual image, the second image generation unit and the first reflection mirror and the second reflection mirror cooperate to form a second virtual image, and the third image generation unit and the second reflection mirror and the third reflection mirror cooperate to form a third virtual image.
According to some embodiments, the head-up display optical system, wherein the first mirror and the second mirror are a compound free-form surface mirror.
According to some embodiments, the head-up display optical system, wherein the third mirror is a single free-form surface mirror.
According to some embodiments, the head-up display optical system, wherein the third mirror is a compound free-form surface mirror.
According to some embodiments, the head-up display optical system, wherein the positions of the virtual images are close to each other.
According to some embodiments, the head-up display optical system, wherein the positions of the virtual images are widely different.
Another aspect of the present invention provides a head-up display imaging method including the steps of:
arranging at least two reflectors; and
providing at least imaging light, wherein each imaging light and at least one reflector cooperate to reflect the imaging light to a light receiving surface and cause the imaging light to be reflected by the light receiving surface;
the imaging light passes through the light receiving face forms two at least virtual images, and each the virtual image mutually supports, forms a three-dimensional formation of image that can be perceived by the user.
According to some embodiments, the head-up display imaging method includes providing two image generation units, a first image generation unit and a second image generation unit, a first mirror and a second mirror, wherein the first image generation unit and the first mirror cooperate to form a first virtual image, the second image generation unit and the first mirror and the second mirror cooperate to form a second virtual image, and the image generation unit provides the imaging light.
According to some embodiments, the head-up display imaging method wherein the first mirror is a compound free-form surface mirror.
According to some embodiments, the head-up display imaging method wherein the second mirror is a single free-form surface mirror.
According to some embodiments, the head-up display imaging method wherein the second mirror is a compound free-form mirror.
According to some embodiments, the head-up display imaging method includes providing three image generating units, namely a first image generating unit, a second image generating unit and a third image generating unit, and providing three reflecting mirrors, namely a first reflecting mirror, a second reflecting mirror and a third reflecting mirror, wherein the first image generating unit and the first reflecting mirror cooperate to form a first virtual image, the second image generating unit and the first reflecting mirror and the second reflecting mirror cooperate to form a second virtual image, and the third image generating unit and the second reflecting mirror and the third reflecting mirror cooperate to form a third virtual image, and the image generating unit provides the imaging light.
According to some embodiments, the head-up display imaging method wherein the first mirror and the second mirror are compound free-form mirrors.
According to some embodiments, the head-up display imaging method, wherein the third mirror is a single free-form surface mirror.
According to some embodiments, the head-up display imaging method wherein the third mirror is a compound free-form surface mirror.
According to some embodiments, the head-up display imaging method further includes displaying the virtual images in a direction parallel to the optical axis.
According to some embodiments, the head-up display imaging method further comprises displaying the virtual images in a plurality of different positions.
Another aspect of the present invention provides a heads-up display device, wherein the heads-up display device performs stereoscopic imaging according to the heads-up display optical system.
Another aspect of the present invention provides a monoscopic display imaging method, in which virtual images at least having similar imaging distances are formed through at least two sets of optical paths, and the virtual images are matched with each other, so that a user perceives imaging light forming each of the virtual images and stereoscopic imaging formed by the virtual images.
According to some embodiments, the head-up display imaging method, wherein the optical imaging system forms the virtual image.
Another aspect of the present invention provides a monoscopic display imaging method, in which at least two virtual images having a longer imaging distance are formed through at least two sets of optical paths, and the virtual images are matched with each other, so that a user perceives imaging light forming each of the virtual images and stereoscopic imaging formed by the virtual images.
Drawings
Fig. 1 is a projection optical path schematic diagram of a head-up display optical system according to a first preferred embodiment of the present invention.
Fig. 2 is a modified embodiment of the head-up display optical system according to the first preferred embodiment of the present invention.
Fig. 3 is a projection optical path schematic diagram of a head-up display optical system according to a second preferred embodiment of the present invention.
Fig. 4 is an application diagram of the head-up display optical system according to the above preferred embodiment of the present invention.
FIG. 5 is another application diagram of the head-up display optical system according to the above preferred embodiment of the present invention
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.
In recent years, head-up displays have been increasingly widely used for automobile driving, and the head-up displays can improve safe driving and improve driving efficiency of drivers to a certain extent. However, based on the basic imaging principle of conventional head-up displays, the driver sees only one planar image. The impression of the formation of a flat image and the response speed are relatively slow, so that the display effect of the head-up display is reduced. According to the invention, the head-up display optical system is provided, which utilizes the visual effect of human eyes to enable the human eyes to observe virtual three-dimensional imaging, thereby enhancing the display effect of head-up display images and more intuitively prompting a driver; further, in the imaging process, at least two virtual images are respectively formed through at least two sets of optical paths, and the formed virtual images can be matched in a mode of simulating the visual observation effect of a person, so that when the person observes in a preset direction, the person sees virtual three-dimensional imaging, that is, a plane virtual image is presented in a three-dimensional mode, the display effect of the image is enhanced, the impression of display content on a driver is highlighted, and further, the imaging optical paths of the virtual images are mutually independent, so that the virtual images are not mutually interfered in the respective virtual image forming processes; furthermore, the head-up display optical system forms at least two imaging light paths through at least two imaging units and at least two reflectors respectively, and each reflector is a free-form surface reflector, so that the curved surface reflectors are matched with each other to realize the enlargement or reduction of an image; further, the head-up display optical system combines the stereo imaging with the actual scene to realize augmented reality; further, the invention provides a head-up display optical system, which comprises at least two image generating units and at least two reflecting mirrors, wherein each image generating unit generates at least two groups of imaging light to be respectively projected to each reflecting mirror, each reflecting mirror reflects each imaging light to a light receiving surface, and each imaging light is reflected by the light receiving surface, so that a user can perceive three-dimensional imaging formed by the two groups of imaging light reflected by the light receiving surface and at least two virtual images formed by the two groups of imaging light through the light receiving surface.
Further, the imaging lights form the virtual images and are matched with each other, so that when a user perceives the virtual images, the user sees stereoscopic imaging instead of planar imaging.
Further, in some embodiments, each of the imaging lights may form at least two virtual images with at least two similar distances, so that the virtual images are connected to form a stereoscopic image.
Further, in some embodiments, each of the imaging lights may form at least two virtual images with a longer distance, so that each of the virtual images is supplemented in front and back to form a stereoscopic image.
As shown in fig. 1, there is a head-up display optical system 10 according to a first preferred embodiment of the present invention. The head-up display optical system 10 includes at least two image generating units 12 and at least two reflecting mirrors 11, wherein an image 120 to be displayed generated by each image generating unit 12 can be magnified and displayed in front of a light receiving surface 22 through at least one of the reflecting mirrors 11 to form a virtual image 21, and each virtual image 21 is matched to form a stereoscopic image 24. That is, after the image to be displayed 120 passes through the head-up display optical system 10, the user sees the stereoscopic image 24 within a predetermined viewing angle range, not a planar image. Here, the image generation unit 12 supplies imaging light 23 so that the image to be displayed 120 is projected.
The light receiving surface 22 is embodied here as a vehicle windscreen. It is noted that the light receiving surface 22 may also be implemented as other separate receiving planes, such as a transparent glass plate.
Specifically, in this embodiment of the present invention, the head-up display optical system 10 includes two image generation units 12, a first image generation unit 121 and a second image generation unit 122, respectively, the first image generation unit 121 forming a first virtual image 211, and the second image generation unit 122 forming a second virtual image 212. The first virtual image 211 and the second virtual image 212 cooperate with each other to form the stereoscopic image 24.
Further, the head-up display optical system 10 includes a first mirror 111 and a second mirror 112, the first image generation unit 121 and the first mirror 111 cooperate to form the first virtual image 211, and the second image generation unit 122 and the first mirror 111 and the second mirror 112 cooperate to form the second virtual image 212.
The first mirror 111 and the second mirror 112 are free-form mirrors, so that the image to be displayed 120 is enlarged or reduced by the free-form mirrors.
More specifically, in this embodiment of the invention, the first reflector 111 has a first reflective surface 1111 and a second reflective surface 1112, and the second reflector 112 has a first reflective surface 1121. The first image generation unit 121 corresponds to the first reflection surface 1111 of the first mirror 111, and forms the first virtual image 211. That is, the first group of imaging light 231 projected by the first image generation unit 121 is reflected to the light receiving surface 22 through the first reflection surface 1111 of the first mirror 111, then reflected by the light receiving surface 22 into the visual range of the user, and the reflected light is extended reversely to form the first virtual image 211.
The second image generation unit 122 corresponds to the second reflection surface 1112 of the first reflection mirror 111, and the second reflection surface 1112 of the first reflection mirror 111 corresponds to the first reflection surface 1121 of the second reflection mirror 112, so that the second group of imaging light 232 projected by the first image generation unit 121 is projected to the second reflection surface 1112 of the first reflection mirror 111, reflected to the first reflection surface 1121 of the second reflection mirror 112 through the second reflection surface 1112, projected to the light receiving surface 22 through the reflection of the second reflection surface 1121, reflected by the light receiving surface 22 to enter the visual range of the user, and the reflected light is extended reversely to form a second virtual image 212. The first virtual image 211 and the second virtual image 212 formed by the first set of imaging light 231 cooperate with each other such that the user perceives the stereoscopic imaging 24 by the reflected light rays.
Further, in this embodiment of the present invention, the first virtual image 211 and the second virtual image 212 are positioned adjacent to each other, so that the first virtual image 211 and the second virtual image 212 are fitted to each other in a pieced manner, thereby forming the stereoscopic image 24. For example, if the projection distance of the first virtual image 211 is L1, and the projection distance of the second virtual image 212 is L2, in the stereoscopic imaging 24 mode of this embodiment, the projection distance L1 of the first virtual image 211 is close to or equal to the projection distance L2 of the virtual image within a predetermined range.
It should be noted that, in principle of imaging, the first group of imaging light 231 and the second group of imaging light 232 are projected to form two virtual images, but based on the principle of human vision, due to the cooperation of the first virtual image 211 and the second virtual image 212, the user sees the stereoscopic image 24 formed by the cooperation of the first virtual image 211 and the second virtual image 212 instead of the first virtual image 211 and the second virtual image 212. That is, the first virtual image 211 and the second virtual image 212 are planar virtual images, and the stereoscopic image 24 is a stereoscopic virtual image and is a virtual image based on the visual effect of human eyes.
The first reflecting surface 1111 and the second reflecting surface 1112 of the first reflecting mirror 111 are free-form surfaces, and the first reflecting surface 1111 and the second reflecting surface 1112 are arranged opposite to each other, that is, the first reflecting mirror 111 is a compound free-form surface reflecting mirror. The first reflection 1121 surface of the second reflection mirror 112 is a free-form surface and does not have a second reflection surface, so that the second reflection mirror 112 is a single free-form surface mirror. Of course, the second reflecting mirror 112 may also be a compound free-form surface, except that the second reflecting surface 1122 of the second reflecting mirror 112 does not need to reflect light.
As shown in fig. 2, is a modified embodiment of the head-up display optical system 10 according to the first preferred embodiment of the present invention. In this embodiment, the head-up display optical system 10 includes a three-image generation unit 12 and a three-mirror 11. The three image generating units 12 and the reflectors 11 cooperate to form at least three virtual images 21, and the virtual images 21 cooperate to allow a user to perceive a stereoscopic image 24.
In this embodiment of the present invention, the head-up display optical system 10 includes three image generating units 12, a first image generating unit 121, a second image generating unit 122, and a third image generating unit 123, respectively, the first image generating unit 121 forming a first virtual image 211, the second image generating unit 122 forming a second virtual image 212, and the third image generating unit 123 forming a third virtual image 213. The first virtual image 211, the second virtual image 212, and the third virtual image 213 cooperate with each other to form the stereoscopic image 24.
Further, the head-up display optical system 10 includes a first reflecting mirror 111, a second reflecting mirror 112, and a third reflecting mirror 113, the first image generation unit 121 and the first reflecting mirror 111 cooperate to form the first virtual image 211, the second image generation unit 122 and the first reflecting mirror 111 and the second reflecting mirror 112 cooperate to form the second virtual image 212, and the third image generation unit 123 and the second reflecting mirror 112 and the third reflecting mirror 113 cooperate to form the third virtual image 213.
The first mirror 111, the second mirror 112, and the third mirror 113 are free-form surface mirrors, so that the image to be displayed 120 is enlarged or reduced by the free-form surface mirrors.
More specifically, in this embodiment of the invention, the first reflector 111 has a first reflecting surface 1111 and a second reflecting surface 1112, the second reflector 112 has a first reflecting surface 1121 and a second reflecting surface 1122, and the third reflector 113 has a first reflecting surface 1131.
The first image generation unit 121 corresponds to the first reflection surface 1111 of the first mirror 111, and forms the first virtual image 211. That is, the first group of imaging light 231 projected by the first image generation unit 121 is reflected to the light receiving surface 22 through the first reflection surface 1111 of the first mirror 111, then reflected by the light receiving surface 22 into the visual range of the user, and the reflected light is extended reversely to form the first virtual image 211.
The second image generation unit 122 corresponds to the second reflection surface 1112 of the first reflection mirror 111, and the second reflection surface 1112 of the first reflection mirror 111 corresponds to the first reflection surface 1121 of the second reflection mirror 112, so that the second group of imaging light 232 projected by the second image generation unit 122 is projected to the second reflection surface 1112 of the first reflection mirror 111, reflected to the first reflection surface 1121 of the second reflection mirror 112 through the second reflection surface 1112, projected to the light receiving surface 22 through the reflection of the second reflection surface 1121, reflected by the light receiving surface 22 to enter the visual range of the user, and the reflected light is reversely extended to form a second virtual image 212.
The third image generation unit 123 corresponds to the second reflection surface 1122 of the second mirror 112, and the second reflection surface 1111 of the second mirror 112 corresponds to the first reflection surface 1131 of the third mirror 113, so that the third set of imaging light 233 projected by the third image generation unit 123 is projected to the second reflection surface 1122 of the second mirror 112, reflected to the first reflection surface 1131 of the third mirror 113 through the second reflection surface 1122, projected to the light receiving surface 22 through the reflection of the first reflection surface 1131, reflected by the light receiving surface 22 to enter the visual range of the user, and the reflected light is extended reversely to form a third virtual image 213. The first virtual image 211, the second virtual image 212, and the third virtual image 213 cooperate with each other, so that the user perceives the stereoscopic imaging 24 by the reflected light.
Further, in this embodiment of the present invention, the first virtual image 211, the second virtual image 212, and the third virtual image 213 are positioned adjacent to each other, so that the first virtual image 211, the second virtual image 212, and the third virtual image 213 fit in a pieced manner with each other, thereby forming the stereoscopic imaging 24. For example, if the projection distance of the first virtual image 211 is L1, the projection distance of the second virtual image 212 is L2, and the projection distance of the third virtual image is L3, in the stereoscopic imaging 24 system according to this embodiment, the projection distance L1 of the first virtual image 211, the projection distance L2 of the second virtual image 212, and the projection distance L3 of the third virtual image 213 approach or are equal to each other within a predetermined range.
It should be noted that, in principle of imaging, the first group of imaging light 231, the second group of imaging light 232, and the third group of imaging light 233 are projected to form the three virtual images 23, but based on the principle of human vision, due to the cooperation of the first virtual image 211, the second virtual image 212, and the third virtual image 213, the user sees the stereoscopic image 24 formed by the cooperation of the first virtual image 211, the second virtual image 212, and the third virtual image 213, instead of the first virtual image 211, the second virtual image 212, and the third virtual image 211.
The first reflecting surface 1111 and the second reflecting surface 1112 of the first reflecting mirror 111 are free-form surfaces, and the first reflecting surface 1111 and the second reflecting surface 1112 are arranged opposite to each other, that is, the first reflecting mirror 111 is a compound free-form surface reflecting mirror. The first reflective surface 1121 and the second reflective surface 1122 of the second reflector 112 are free-form surfaces, and the first reflective surface 1121 and the second reflective surface 1122 are opposite to each other, that is, the second reflector 112 is a compound free-form surface reflector. Since the first reflecting surface 1121 of the third reflecting mirror 113 is a free-form surface and does not have the second reflecting surface 1122, the third reflecting mirror 113 is a single free-form surface mirror. Of course, the third reflecting mirror 113 may also be a compound free-form surface, but the second reflecting surface 1132 of the third reflecting mirror 113 does not need to reflect light.
In the above embodiment, the stereoscopic imaging is formed in such a way that two and three virtual images are formed, respectively, but in a specific implementation, the virtual images may be formed, and this is merely an example, and the principle of forming the stereoscopic imaging 24 in the present invention is not limited.
As shown in fig. 3, there is a head-up display optical system 10 according to a second preferred embodiment of the present invention. The head-up display optical system 10 includes at least two image generating units 12 and at least two reflecting mirrors 11, wherein an image 120 to be displayed produced by each of the image generating units 12 can be enlarged and displayed in front of a light receiving surface by at least one of the reflecting mirrors to form a virtual image 21, and the virtual images cooperate to form a stereoscopic image 24. That is, after the image to be displayed 120 passes through the head-up display optical system 10, the user sees the stereoscopic image 24 within a predetermined viewing angle range, not a planar image. Here, the image generation unit 12 supplies imaging light 23 so that the image to be displayed 120 is projected.
The light receiving surface is embodied here as a vehicle windscreen 22. It is noted that the light receiving surface 22 may also be implemented as other separate receiving planes, such as a transparent glass plate.
Specifically, in this embodiment of the present invention, the head-up display optical system 10 includes two image generation units 12, a first image generation unit 121 and a second image generation unit 122, respectively, the first image generation unit 121 forming a first virtual image 211, and the second image generation unit 122 forming a second virtual image 212. The first virtual image 211 and the second virtual image 212 cooperate with each other to form the stereoscopic image 24. The first virtual image 211 and the second virtual image 212 have a predetermined distance therebetween.
Further, the head-up display optical system 10 includes a first mirror 111 and a second mirror 112, the first image generation unit 121 and the first mirror 111 cooperate to form the first virtual image 211, and the second image generation unit 122 and the first mirror 111 and the second mirror 112 cooperate to form the second virtual image 212.
The first mirror 111 and the second mirror 112 are free-form mirrors, so that the image to be displayed 120 is enlarged or reduced by the free-form mirrors.
More specifically, in this embodiment of the invention, the first reflecting mirror 111 has a first reflecting surface 111 and a second reflecting surface 1112, and the second reflecting mirror 112 has a first reflecting surface 1121. The first image generation unit 121 corresponds to the first reflection surface 1111 of the first mirror 111, and forms the first virtual image 211. That is, the first group of imaging light 231 projected by the first image generation unit 121 is reflected to the light receiving surface 22 through the first reflection surface 1111 of the first mirror 111, then reflected by the light receiving surface 22 into the visual range of the user, and the reflected light is extended reversely to form the first virtual image 211.
The second image generation unit 122 corresponds to the second reflection surface 1112 of the first reflection mirror 111, and the second reflection surface 1112 of the first reflection mirror 111 corresponds to the first reflection surface 1121 of the second reflection mirror 112, so that the second group of imaging light 232 projected by the first image generation unit 121 is projected to the second reflection surface 1112 of the first reflection mirror 111, reflected to the first reflection surface 1121 of the second reflection mirror 112 through the second reflection surface 1112, projected to the light receiving surface 22 through the reflection of the second reflection surface 1121, reflected by the light receiving surface 22 to enter the visual range of the user, and the reflected light is extended reversely to form a second virtual image 212. The first virtual image 211 and the second virtual image 212 formed by the first set of imaging light 231 cooperate with each other such that the user perceives the stereoscopic imaging 24 by the reflected light rays.
Further, in this embodiment of the present invention, the first virtual image 211 and the second virtual image 212 are located at a relatively large distance, so that the first virtual image 211 and the second virtual image 212 are fitted to each other in a front-back manner, thereby forming the stereoscopic imaging 24. For example, if the projection distance of the first virtual image 211 is L1 and the projection distance of the second virtual image 212 is L2, the projection distance L1 of the first virtual image 211 and the projection distance L2 of the virtual image are different in the stereoscopic imaging 24 method of this embodiment, and L1< L2 in this embodiment.
It should be noted that, in principle of imaging, the first group of imaging light 231 and the second group of imaging light 232 are projected to form two virtual images, but based on the principle of human vision, due to the cooperation of the first virtual image 211 and the second virtual image 212, the user sees the stereoscopic image 24 formed by the cooperation of the first virtual image 211 and the second virtual image 212 instead of the first virtual image 211 and the second virtual image 212. That is, the first virtual image 211 and the second virtual image 212 are planar virtual images, and the stereoscopic image 24 is a stereoscopic virtual image and is a virtual image based on the visual effect of human eyes.
The first reflecting surface 1111 and the second reflecting surface 1112 of the first reflecting mirror 111 are free-form surfaces, and the first reflecting surface 1111 and the second reflecting surface 1112 are arranged opposite to each other, that is, the first reflecting mirror 111 is a compound free-form surface reflecting mirror. The first reflecting surface 1121 of the second reflecting mirror 112 is a free-form surface and does not have the second reflecting surface 1122, so that the second reflecting mirror 112 is a single free-form surface mirror. Of course, the second reflecting mirror 112 may also be a compound free-form surface, except that the second reflecting surface 1122 of the second reflecting mirror 112 does not need to reflect light.
The different optical paths formed by the first embodiment and the second embodiment, respectively, so as to form virtual images at different positions, such as close distances or longer distances, can be realized by adjusting the angles and positions of the first mirror 111, the second mirror 112 and/or the third mirror 113.
According to the above preferred embodiment of the present invention, the head-up display optical system 10 may be applied to an in-vehicle system, such as a car navigation system, so that a user can see stereoscopic navigation information, the user can be reminded more clearly, the user's attention to the displayed information is improved, driving safety and correctness are improved, and time waste is reduced.
Further, according to the embodiment of the invention, the image to be displayed can be combined with actual information, so that the display is closer to reality, and the prompt effect is more obvious.
For example, referring to fig. 4, when the image to be displayed 120 is navigation information and the user drives a car on a highway, the navigation information indicates that a left turn is required at the next intersection, at this time, the head-up display optical system 10 displays a stereoscopic left turn arrow 24 on the corresponding left turn lane and presents a perspective effect of large and small distances, thereby more obviously reminding the user of turning left in time so as to avoid time waste caused by missing the intersection.
For example, in another application scenario, referring to fig. 5, the image to be displayed 120 is navigation information, and when the user drives a car to run on a road with a large traffic flow, the image to be displayed displays a distance between the driving car and a vehicle ahead, so as to ensure that the user can drive safely, and further, the distance information 24 is combined with an actual environment, such as the running road and the vehicle ahead, so that the user can know the distance information more intuitively and clearly, and feel the change of the distance intuitively, so as to ensure safe driving.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (20)
1. A head-up display optical system, comprising:
at least two image generating units; and
at least two reflectors, wherein each image generation unit and at least one reflector cooperation is thrown formation of image light and is received a light and form a virtual image respectively, wherein each image generation unit and each reflector respectively form an image light path, each image light path is independent each other, wherein at least one the reflector is compound free-form surface mirror, wherein two the light path of formation of image shares two reflection planes that compound free-form surface mirror carried on the back mutually, each virtual image cooperatees to make user's perception form each formation of image light of virtual image and by the stereographic that the virtual image formed.
2. The head-up display optical system according to claim 1, wherein the head-up display optical system includes two image generating units, a first image generating unit and a second image generating unit, a first reflecting mirror and a second reflecting mirror, respectively, wherein the first image generating unit and a first reflecting surface of the first reflecting mirror cooperate to form a first virtual image, and the second image generating unit and a second reflecting surface of the first reflecting mirror and the second reflecting mirror cooperate to form a second virtual image.
3. The heads up display optical system of claim 2 wherein the first mirror is a compound free form surface mirror.
4. The heads-up display optical system of claim 2 wherein the second mirror is a single free-form surface mirror.
5. The heads-up display optical system of claim 2 wherein the second mirror is a compound free-form surface mirror.
6. The head-up display optical system according to claim 1, wherein the head-up display optical system includes three image generating units, a first image generating unit, a second image generating unit, a third image generating unit, and three reflecting mirrors, a first reflecting mirror, a second reflecting mirror, and a third reflecting mirror, respectively, wherein the first image generating unit and the first reflecting surface of the first reflecting mirror cooperate to form a first virtual image, the second image generating unit and the second reflecting surface of the first reflecting mirror and the first reflecting surface of the second reflecting mirror cooperate to form a second virtual image, and the third image generating unit and the second reflecting surface of the second reflecting mirror and the third reflecting mirror cooperate to form a third virtual image.
7. The heads-up display optical system of claim 6, wherein the first mirror and the second mirror are compound free-form mirrors.
8. The heads up display optical system of claim 6 wherein the third mirror is a single free form mirror.
9. The heads up display optical system of claim 6 wherein the third mirror is a compound free form mirror.
10. A head-up display imaging method, comprising the steps of:
arranging at least two reflectors; and
arranging at least imaging light, wherein each imaging light and at least one reflector are matched to reflect the imaging light to a light receiving surface, and the imaging light is reflected by the light receiving surface, wherein each imaging light and each reflector form an imaging light path, at least one reflector is a compound free-form surface mirror, and two imaging light paths share two opposite reflecting surfaces of the compound free-form surface mirror;
the formation of image light forms mutually independent the formation of image light path, wherein each the formation of image light path passes through the light receiving face forms two at least virtual images, and each the virtual image is mutually supported, forms a three-dimensional formation of image that can be perceived by the user.
11. The heads-up display imaging method as claimed in claim 10, wherein including providing two image generating units, a first image generating unit and a second image generating unit, a first mirror and a second mirror, wherein the first image generating unit and the first reflective surface of the first mirror cooperate to form a first virtual image, the second image generating unit and the second reflective surface of the first mirror and the second mirror cooperate to form a second virtual image, the image generating unit providing the imaging light.
12. The heads up display imaging method as claimed in claim 11, wherein the first mirror is a compound free-form surface mirror.
13. The heads up display imaging method as claimed in claim 11, wherein the second mirror is a single free form mirror.
14. The heads up display imaging method as claimed in claim 11, wherein the second mirror is a compound free-form surface mirror.
15. The head-up display imaging method according to claim 10, comprising providing three image generating units, respectively, a first image generating unit, a second image generating unit, a third image generating unit, and comprising providing three reflecting mirrors, respectively, a first reflecting mirror, a second reflecting mirror, and a third reflecting mirror, wherein the first image generating unit and the first reflecting surface of the first reflecting mirror cooperate to form a first virtual image, the second image generating unit and the second reflecting surface of the first reflecting mirror and the first reflecting surface of the second reflecting mirror cooperate to form a second virtual image, the third image generating unit and the second reflecting surface of the second reflecting mirror and the third reflecting mirror cooperate to form a third virtual image, and the image generating unit provides the imaging light.
16. The heads up display imaging method as claimed in claim 15, wherein the first mirror and the second mirror are compound free-form surface mirrors.
17. The heads up display imaging method as claimed in claim 15, wherein the third mirror is a single free form mirror.
18. The heads up display imaging method as claimed in claim 15, wherein the third mirror is a compound free-form surface mirror.
19. A head-up display apparatus, wherein the head-up display apparatus performs stereoscopic imaging according to the head-up display optical system according to any one of claims 1 to 9.
20. A head-up display imaging method characterized in that the head-up display optical system according to any one of claims 1 to 9 forms the virtual images, at least two virtual images are formed by at least two sets of optical paths, and the virtual images are matched so that a user perceives the imaging light forming each virtual image and stereoscopic imaging formed by the virtual images.
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| CN111308441B (en) * | 2018-12-12 | 2024-06-18 | 宁波舜宇车载光学技术有限公司 | Laser radar transmitting device and assembling method |
| WO2020186498A1 (en) * | 2019-03-21 | 2020-09-24 | 京东方科技集团股份有限公司 | Integrated imaging display system |
| CN114415370B (en) * | 2020-05-15 | 2023-06-06 | 华为技术有限公司 | Head-up display device, display method and display system |
| CN114077052A (en) * | 2020-08-21 | 2022-02-22 | 未来（北京）黑科技有限公司 | Multilayer image display device, head-up display, and transportation apparatus |
| CN112379524B (en) * | 2020-11-23 | 2022-10-21 | 北京经纬恒润科技股份有限公司 | Image generation structure, display method and device |
| CN112530328B (en) * | 2020-11-30 | 2022-12-16 | 京东方科技集团股份有限公司 | Suspension display device |
| CN116184686A (en) * | 2022-05-10 | 2023-05-30 | 华为技术有限公司 | Stereoscopic display device and vehicle |
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