CN213457538U

CN213457538U - Head-up display device and head-up display system

Info

Publication number: CN213457538U
Application number: CN202021937676.0U
Authority: CN
Inventors: 吴慧军; 方涛; 徐俊峰
Original assignee: Future Beijing Black Technology Co ltd
Current assignee: Future Beijing Black Technology Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-06-15
Anticipated expiration: 2030-09-08

Abstract

The utility model discloses a new line display device and new line display system, this new line display device includes: the stereoscopic vision light source emits stereoscopic vision light rays; the reflecting element reflects the stereoscopic vision light rays to an external imaging device to form a stereoscopic vision virtual image; the lens module changes the angle of the stereoscopic vision light and gathers the stereoscopic vision light with the changed angle to a first area, and the gathered stereoscopic vision light is emitted to the reflecting element; the moving mechanism drives the lens module to move so as to adjust the distance between the imaging position of the stereoscopic vision virtual image and the external imaging device. The embodiment of the utility model provides a new line display device can form the stereovision virtual image in different distance places, can effectively avoid the driver sight to switch over fatigue that causes back and forth between real scene and virtual image; in addition, the use experience and the driving safety of the head-up display device are improved.

Description

Head-up display device and head-up display system

Technical Field

The utility model belongs to the technical field of the optical display, concretely relates to new line display device and new line display system.

Background

The Head-up display (HUD) projects important driving information such as speed per hour, navigation and the like onto a windshield or an imaging window in front of a driver through a reflective optical system, so that the driver can see virtual images of the important driving information such as speed per hour, navigation and the like without lowering Head or turning Head. Under the condition of normal driving, the actual road condition observed by a driver is three-dimensional, so that a plane picture formed by the HUD cannot be attached to the actual road condition for display; meanwhile, the imaging distance of the image is generally not adjustable, which often causes the imaging position of the image on the windshield to be inconsistent with the position focused by the eyes of the driver, for example, when the driver gazes at a distant road, the image formed by the HUD needs to be observed from the distant road to the near road, which causes a visual convergence conflict, and may cause the driver to have bad conditions such as fatigue, nausea, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an at least embodiment provides a new line display device, include: the stereoscopic vision image source, the reflecting element, the lens module and the moving mechanism; the stereoscopic vision image source emits stereoscopic vision rays capable of forming a stereoscopic vision image; the reflecting element reflects the stereoscopic vision light rays incident to the reflecting element to the external imaging device, and the stereoscopic vision light rays are reflected by the external imaging device to form a stereoscopic vision virtual image; the lens module is arranged on a propagation path of stereoscopic vision light rays between the stereoscopic vision image source and the reflecting element, transmits the stereoscopic vision light rays, and changes the direction of the stereoscopic vision light rays passing through the lens module; the moving mechanism is used for driving the lens module to move along the propagation path of the stereoscopic vision light so as to adjust the distance between the imaging position of the stereoscopic vision virtual image and the external imaging device.

For example, in an embodiment of the present invention, the lens module comprises a zoom lens having an adjustable optical power.

For example, in an embodiment of the present invention, the stereoscopic image source includes an image generating section and a stereoscopic image generating section; the image generating part emits image light rays, and the image light rays at least comprise first light rays and second light rays; the stereoscopic vision generating part is arranged in the light emitting direction of the image generating part, and after the image light passes through the stereoscopic vision generating part, the first light is emitted to a first observation position, and the second light is emitted to a second observation position, so that the stereoscopic vision image is formed.

For example, in an embodiment of the present invention, the stereoscopic vision generating unit includes: a barrier layer; a preset distance is arranged between the blocking layer and the image generating part, the blocking layer comprises a plurality of blocking units, and the blocking units are arranged at intervals; each blocking unit is used for blocking part of light rays emitted by the image generating part, so that the first light rays and the second light rays which are not blocked by each blocking unit are emitted to the first observation position and the second observation position respectively.

For example, in an embodiment of the present invention, the stereoscopic vision generating unit includes: a lenticular lens layer; the lenticular lens layer includes a plurality of lenticular lenses, and the lenticular lens layer is configured to change a propagation direction of light emitted from the image generating portion, so that the first light and the second light passing through the lenticular lens layer are emitted to the first observation position and the second observation position, respectively.

For example, in an embodiment of the present invention, the image generating unit includes: a driving unit for alternately and sequentially turning on and off the image generating part so that the image generating part alternately and sequentially emits the first light and the second light.

For example, in an embodiment of the present invention, the stereoscopic vision generating portion includes a first surface and a second surface that are opposed; the first surface comprises a plurality of prism portions and the second surface comprises a plurality of curved cylindrical mirror portions; the prism parts and the curved cylindrical lens parts are arranged in a one-to-one correspondence manner; the first light rays and the second light rays which are alternately and sequentially emitted are incident to the first surface, and are alternately and sequentially emitted to the first observation position and the second observation position through the second surface.

For example, in an embodiment of the present invention, the image generating unit includes: at least one light source emitting light; the light guide element is used for gathering partial light rays emitted by the light source towards the center direction of the light guide element; the light condensing element is used for condensing the light which is incident to the light condensing element through the light guide element to a preset area; a light diffusion element for diffusing the light condensed by the light condensing element and incident on the light diffusion element; and the liquid crystal panel is used for converting the light diffused by the light diffusion element and incident to the liquid crystal panel into image light and emitting the image light.

For example, in an embodiment of the present invention, the light guiding element includes a hollow shell provided with an internal reflection surface, the hollow shell includes an opposite light exit opening and an end opening; the light emitted by the light source enters the hollow shell through the end opening, is reflected by the internal reflection surface, and is emitted to the light gathering element through the light outlet opening.

For example, in an embodiment of the invention, the reflective element comprises at least one curved mirror.

For example, in an embodiment of the invention, the reflective element further comprises at least one plane mirror.

For example, in an embodiment of the present invention, the moving mechanism includes at least one of a slide rail moving mechanism, a belt conveying mechanism, or a gear translation mechanism.

The utility model discloses an at least embodiment provides a new line display system, include: the head-up display device of any one of the above, and: an external imaging device; the external imaging device is used for reflecting the stereoscopic vision light rays emitted by the reflecting element and forming a stereoscopic vision virtual image on one side of the external imaging device, which is far away from the head-up display device.

For example, in an embodiment of the present invention, wherein a surface of the external imaging device facing the head-up display device is provided with a selective reflection film; the selective reflection film is used for reflecting the stereoscopic vision light rays with a first reflectivity and reflecting the light rays of wave bands except the wave band where the stereoscopic vision light rays are located with a second reflectivity; the first reflectivity is greater than the second reflectivity.

For example, in an embodiment of the present invention, the method further includes: a polarization conversion device; the polarization conversion device is arranged on the propagation path of the stereoscopic vision light rays between the reflecting element and the external imaging device; the emergent stereopsis image source includes the stereopsis light of first linear polarization state, polarization conversion equipment is used for inciding to polarization conversion equipment the light of first linear polarization state converts the stereopsis light including circular polarization state or elliptical polarization state, after the conversion the stereopsis light of circular polarization state or elliptical polarization state warp outside image device reflects and forms the stereopsis virtual image.

For example, in an embodiment of the present invention, the distance between the virtual stereoscopic image and the external imaging device includes a preset distance interval; the preset distance interval comprises at least one of a distance interval of 2-4 meters, a distance interval of 7-14 meters and a distance interval of 20-50 meters.

In the above scheme provided by the embodiment of the utility model, through setting up the stereoscopic vision image source in the new line display device, can form the virtual image that has the stereoscopic vision, the stereoscopic vision virtual image matches the effect of showing with the outside stereoscopic real scene of vehicle, such as pedestrian, vehicle or building, is superior to the plane virtual image among the prior art; and set up lens module and mobile device, adjust the distance between new line display device found stereo vision virtual image and user or windshield through moving lens module on the light path, new line display device can form images in different distance departments, the formation of image of different distances can be with current user like the position matching of driver's sight focus, the realization of avoiding the driver switches back and forth between the image of fixed distance and the outdoor scene of different distances, avoid the driver to produce the discomfort, and then the use experience and the driving safety nature of new line display device have been promoted.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 shows a first schematic diagram of a head-up display device and a head-up display system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a head-up display device and a head-up display system according to an embodiment of the present invention;

fig. 3a shows a schematic structural diagram of a head-up display device according to an embodiment of the present invention;

fig. 3b shows a schematic structural diagram of a head-up display device according to an embodiment of the present invention;

fig. 4 is a first schematic diagram showing the action of the stereoscopic vision generating part of the head-up display device according to an embodiment of the present invention on light;

fig. 5 is a schematic diagram showing the action of the stereoscopic vision generating part of the head-up display device according to the embodiment of the present invention on light;

fig. 6 shows a third schematic diagram of the action of the stereoscopic vision generating part of the head-up display device according to an embodiment of the present invention on light;

fig. 7 is a schematic structural diagram of an image generating portion of a head-up display device according to an embodiment of the present invention;

fig. 8 is a first schematic diagram illustrating the effect of the light guide element of the head-up display device on light according to an embodiment of the present invention;

fig. 9 is a second schematic diagram illustrating the action of the light guide element of the head-up display device on light according to an embodiment of the present invention;

fig. 10 is a third schematic diagram illustrating the action of the light guide element of the head-up display device on light according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of the effect of the light gathering elements of the head-up display device on light according to one embodiment of the present invention;

fig. 12 is a schematic view of a package housing of a head-up display device according to an embodiment of the present invention;

fig. 13 shows a first schematic diagram of an external imaging device of a heads-up display system according to an embodiment of the invention;

fig. 14 shows a second schematic diagram of an external imaging device of a heads-up display system according to an embodiment of the invention;

fig. 15 shows a third schematic structural diagram of a head-up display system according to an embodiment of the present invention.

Description of reference numerals: 10-stereoscopic image source; 11-an image generating section; 111-a light source; 112-a light-guiding element; 1121-hollow shell end opening; 1122-hollow shell light exit opening; 1123-solid transparent member ends; 1124-solid transparent component light-emitting surface; 1125-solid transparent member cavity; 1126-solid transparent member alignment; 1127-solid transparent member opening; 113-a light concentrating element; 114-a light diffusing element; 115-liquid crystal panel; 12-a stereoscopic vision generating unit; 121-a barrier layer; 122-a lenticular lens layer; 1201-stereoscopic generation section first surface; 1202-stereoscopic vision generating section second surface; 20-a reflective element; 21-a curved mirror; 22-a plane mirror; 30-a lens module; 40-a moving mechanism; 50-a package housing; 51-a light outlet of the packaging shell; 52-transparent dust-proof film; 53-antiglare masks; 60-a polarization conversion device; 100-head-up display device; 200-an external imaging device; 201-a selective reflective film; 202-polarizing reflective film.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

It should be noted that, for simplicity and clarity of description, the following description sets forth various embodiments of the present invention. Numerous details of the embodiments are set forth to provide an understanding of the principles of the invention. It is clear, however, that the solution according to the invention can be implemented without being limited to these details. Some embodiments are not described in detail, but rather only to give a framework, in order to avoid unnecessarily obscuring aspects of the present invention. Hereinafter, "including" means "including but not limited to", "according to … …" means "at least according to … …, but not limited to … … only". "first," "second," and the like are used merely as references to features and are not intended to limit the features in any way, such as in any order. In view of the language convention of chinese, the following description, when it does not specifically state the number of a component, means that the component may be one or more, or may be understood as at least one.

An embodiment of the utility model provides a new line display device for emergent ray to outside image device, as shown in fig. 1, new line display device 100 includes: the stereoscopic vision image source 10, the reflecting element 20, the lens module 30 and the moving mechanism 40; the stereoscopic vision image source 10 emits stereoscopic vision rays capable of forming a stereoscopic vision image; the reflective element 20 reflects the stereoscopic light rays incident thereto to the external imaging device 200, reflects the stereoscopic light rays by the external imaging device 200, and forms a stereoscopic virtual image V; the lens module 30 is arranged on the propagation path of the stereoscopic vision light between the stereoscopic vision image source 10 and the reflecting element 20, transmits the stereoscopic vision light, and changes the direction of the stereoscopic vision light passing through the lens module; the moving mechanism 40 is configured to drive the lens module 30 to move along the propagation path of the stereoscopic light to adjust the distance between the imaging position of the virtual stereoscopic image V and the external imaging device 200.

In this embodiment, the stereoscopic image source 10 can form a stereoscopic image and emit stereoscopic light rays that can form a stereoscopic image. The formation of the stereoscopic vision image is that different pictures are respectively given to two eyes, namely two different pictures are observed by the two eyes of a person, and the brain forms a picture with stereoscopic vision through the superposition and fusion of picture information, so that the stereoscopic vision is generated; for example, the pictures corresponding to the two eyes may be the same object or the same picture viewed from the left and right eyes. It is understood that when a user such as a driver directly observes the stereoscopic image source 10, a stereoscopic real image formed on the surface of the stereoscopic image source 10 is observed; when other optical elements such as a reflective optical element (e.g., a reflective element), a refractive optical element (e.g., a lens), and the external imaging device 200 are disposed between the stereoscopic image source 10 and the driver, the light rays are refracted and/or reflected to finally form a stereoscopic virtual image V on the outer side of the external imaging device 200 (e.g., the side away from the head-up display device 100), and the reflected light rays forming the stereoscopic virtual image V exit to the observation area, and the stereoscopic virtual image V can be observed when the driver has both eyes in the observation area; the observation area can be an eye box area (eyebox), the eye box area can be a binocular area which can be used for normally watching and using the head-up display system, and the driver can watch a virtual image formed by the head-up display system when the two eyes of the driver move up and down or left and right in the eye box area. When the head-up display device is used, outdoor real scenes such as roads, pedestrians, vehicles, buildings and the like are all three-dimensional objects, the stereoscopic vision virtual image V is better than a traditional plane virtual image in effect of being displayed in a matched mode with the real object, and parallax caused when a user observes a real three-dimensional world and the plane virtual image like a driver can be effectively eliminated.

In the present embodiment, the reflective element 20 reflects the stereoscopic light rays incident thereto to the external imaging device 200. Specifically, the reflecting element 20 includes at least one curved mirror 21, as shown in fig. 1, specifically, a concave surface of the curved mirror 21 receives and reflects stereoscopic vision light; specifically, the distance between the stereoscopic vision image source 10 and the curved surface reflector 21 is smaller than the focal length of the curved surface reflector 21, and it can be known from the reflection imaging property of the concave surface reflector that the optical distance between the object to be imaged and the concave surface reflector is smaller than the focal length of the curved surface reflector 21 (that is, the object to be imaged is located within one-time focal length of the concave surface reflector), the concave surface reflector becomes an orthotropic virtual image, and the image distance of the virtual image increases with the increase of the object distance, that is, the optical distance between the object to be imaged and the concave surface reflector is larger, the larger the imaging distance is, and the larger the imaging distance of the stereoscopic vision virtual image V formed by the light reflected by the external imaging device 200 is. Alternatively, the curved surface mirror 21 may be a free-form surface mirror, and a reflecting surface of the free-form surface mirror does not have a rotational symmetry characteristic, so that the imaging quality of the head-up display device can be improved.

Further, the reflective element 20 further includes at least one plane mirror 22, and the at least one plane mirror 22 is disposed between the curved mirror 21 and the stereoscopic image source 10, as illustrated in fig. 2 by taking the example that the head-up display device further includes one plane mirror 22; the plane mirror 22 can change the propagation direction of the stereoscopic vision light through reflection, so that the volume of the head-up display device can be reduced, and the practicability of the head-up display device is further improved.

In this embodiment, the lens module 30 is disposed on the propagation path of the stereoscopic light between the stereoscopic image source 10 and the reflective element 20, and transmits the stereoscopic light and changes the direction of the stereoscopic light passing through the stereoscopic light. The lens module 30 includes optical devices with non-zero focal power, such as a convex lens, a concave lens, or a fresnel lens, that is, the lens module 30 can bend light rays by refraction and other actions, change the direction of the light rays passing through the lens module, and concentrate (for example, a convex lens) or disperse (for example, a concave lens) the light rays; the lens module 30 may also be a combination of at least two of the above lenses, and the lens combination can eliminate aberration, distortion, etc.; in the drawings of the present disclosure, the lens module 30 is illustrated as including a convex lens having a light gathering function, but should not be construed as limiting the present disclosure.

As shown in fig. 2, 3a and 3b, when the head-up display device 100 further includes the plane mirror 22, the lens module 30 may be disposed on the propagation path of the stereoscopic light between the stereoscopic image source 10 and the plane mirror 22, as shown in fig. 2; it can also be arranged on the propagation path of the stereoscopic vision light between the plane mirror 22 and the curved mirror 21, as shown in fig. 3 a; alternatively, the lens modules 30 include a plurality of lens modules, and are disposed on the propagation path of the stereoscopic light between the plane mirror 22 and the curved mirror 21, and between the plane mirror 22 and the stereoscopic image source 10, as shown in fig. 3 b; the present embodiment does not limit this.

In this embodiment, the moving mechanism 40 is configured to drive the lens module 30 to move along the propagation path of the stereoscopic light, so as to adjust the distance between the imaging position of the stereoscopic virtual image V and the external imaging device 200. Specifically, the moving mechanism 40 is connected to the lens module 30 through at least one of mechanical connection and fixed connection to drive the lens module 30 to move; specifically, the propagation path of the stereoscopic vision ray may be regarded as the propagation path of a principal axis ray of the stereoscopic vision ray, the principal axis ray may be regarded as a ray having the same or similar connecting line direction between the central point of the stereoscopic vision image source 10 and the central point of the curved reflector 21 (e.g., the geometric center of a plane surrounded by four vertices of the curved reflector 21), and the direction of the principal axis ray represents the main direction of propagation of most stereoscopic vision rays.

In this embodiment, the stereoscopic-vision image source 10 emits stereoscopic-vision light, the stereoscopic-vision light is reflected by the reflecting element 20, such as the curved reflector 21, and then exits to the external imaging device 200, and then is reflected by the external imaging device 200, and a stereoscopic-vision virtual image V is formed on one side of the external imaging device 200 away from the head-up display device 100, as shown in fig. 1 and 2; generally, although the external imaging device 200 such as a windshield also includes a curved surface shape and has a certain optical power, it has a smaller influence on light than the curved surface mirror 21, and therefore the external imaging device 200 has a smaller influence on the imaging distance of the stereoscopic virtual image V, which is mainly determined by the curved surface mirror 21; that is, in the optical system of the head-up display device, an element having a power different from zero (that is, having an optical power that can condense or diffuse light passing therethrough) affects the imaging distance of the virtual stereoscopic image V.

For example, the lens module 30 can specifically realize the effect on the imaging distance of the head-up display device through the capability of condensing or diverging light. Under the condition that the lens module 30 is not arranged, the light emitted from the stereoscopic vision image source 10 is reflected by the reflecting element 20 and then emitted, and is reflected and imaged by the external imaging device 200, and it can be considered that for the reflection process at the external imaging device 200, the equivalent image source is a virtual image formed by the stereoscopic vision image source 10 through the reflecting element 20; after the lens module 30 is disposed on the light path, for the reflection process at the external imaging device 200, the equivalent image source is a virtual image or a real image formed by the stereoscopic image source 10 passing through the lens module 30, and a virtual image formed by the reflecting element 20; therefore, the lens module 30 and the curved mirror 21 jointly determine the imaging distance of the virtual stereoscopic image V.

For example, taking the lens module 30 as a convex lens as an example, when the distance between the stereoscopic image source 10 and the lens module 30 is smaller than the focal length of the lens module 30, the stereoscopic light rays form an upright virtual image after passing through the lens module 30; when the distance between the stereoscopic vision image source 10 and the lens module 30 is larger than one-time focal length of the lens module 30, the stereoscopic vision light rays form an inverted real image after passing through the lens module 30; the image distance v of the virtual image or the real image has a relationship of 1/u +1/v to 1/f with the distance u between the stereoscopic image source 10 and the lens module 30 and the focal length f of the lens module 30.

As can be seen from the above explanation of the lens module 30, after the lens module 30 is added, the imaging distance of the stereoscopic virtual image V changes compared to that before the lens module 30 is not added; however, in the case that the lens module 30 is fixed in position or the focal power is fixed, the position of the real image or the virtual image formed by the stereoscopic image source 10 through the lens module 30 is fixed, and the position of the virtual image formed by the real image or the virtual image through the reflective element 20 is also fixed, that is, the position of the equivalent image source is fixed; therefore, to realize that the stereoscopic virtual image V of the head-up display device has a variable imaging distance, the position of the equivalent image source can be adjusted by adjusting the position of the lens module 30 (i.e. the object distance u for the lens module 30 can be the distance between the lens module 30 and the stereoscopic image source 10); alternatively, the adjustment of the position of the virtual image source may be realized by adjusting the focal power (Φ is 1/f) of the lens module 30, so that the adjustment of the imaging distance of the stereoscopic virtual image V is realized.

Specifically, the distance between the elements may be considered as a geometric distance between the elements, and may also be considered as an optical propagation distance between the elements of the stereo imaging light, and specifically may be a product between the geometric distance of the light propagation and a refractive index of a propagation medium (such as air). The imaging distance of the stereoscopic virtual image V, that is, the distance between the stereoscopic imaging position and the external imaging device 200, may also be considered as the distance between the stereoscopic virtual image V and the observation area (e.g., eye box area) where the eyes of the user are located, and the distance between the observation area and the external imaging device 200 is generally a fixed distance, so in this case, the imaging distance is still adjusted by adjusting the position of the lens module 30.

Optionally, the lens module 30 comprises a zoom lens having an adjustable optical power; as can be seen from the above explanation, adjusting the focal power (i.e., adjusting the focal length) can also achieve adjustment of the position of the equivalent image source, and finally can achieve adjustment of the stereoscopic virtual image V imaging distance; the zoom lens may be a liquid crystal lens, a liquid lens, or other lens having a continuously variable optical power, and may be zoom-adjusted by adjusting an electric signal. The zoom lens needs to be matched with the moving mechanism 40 to move when zooming, the distance between the zoom lens and the stereoscopic vision image source 10 is adjusted, clear imaging can be achieved when the focal power is changed, and imaging of a stereoscopic vision virtual image V is prevented from being influenced.

In the embodiment of the present invention, by providing the stereoscopic image source 10, the reflective element 20, and the lens module 30 in the head-up display system, the user with both eyes in the observation area, such as the driver, can observe the stereoscopic virtual image V; and, can be through the position of adjusting lens module 30, perhaps lens module 30's focal power and lens module 30's position, adjust the distance between the formation of image position and the outside image device 200 of stereovision virtual image V, the new line display device can form stereovision virtual image V in different formation of image distance departments, it is better with the laminating effect of actual three-dimensional road conditions, and can effectively avoid driver's sight to make a round trip to switch the fatigue that causes, the use that has promoted new line display device is experienced and is driven the security.

On the basis of the above embodiments of the present invention, the moving mechanism 40 includes at least one of a slide rail moving mechanism, a belt conveying mechanism, or a gear translation mechanism. For example, the gear translation mechanism includes a driving member and a gear, and the lens module 30 includes a rack extending along the moving direction, and the rack is engaged with the gear; the center of the gear is connected with the driving part, the driving part drives the gear to rotate like a motor, and the gear drives the rack to move back and forth, so that the position of the lens module 30 can be adjusted. For example, the belt conveying mechanism includes a driving member, a pair of gear assemblies and a caterpillar track meshed with the gear assemblies for transmission, and the lens module 30 is fixedly connected with the caterpillar track; the driving part is connected with the gear set, the driving part drives the gear set to rotate like a motor, the gear set drives the crawler belt to convey, and then the lens module 30 is driven to move, and the position of the lens module 30 is adjusted. For example, the slide rail moving mechanism includes a driving member, a slide rail and a slider, and the slider is connected to the lens module 30; the driving piece drives the sliding block to move back and forth along the sliding rail, so that the lens module 30 is driven to move, and the position of the lens module 30 is adjusted.

In the embodiment of the utility model, the lens module 30 is driven to move by the slide rail moving mechanism, the belt conveying mechanism or the gear translation mechanism, etc., so as to realize the adjustment of the position of the lens module 30 and further realize the adjustment of the imaging distance of the stereoscopic vision virtual image V; and the moving mechanism 40 has a simple structure and is easy to install and implement.

On the basis of the above embodiments of the present invention, as shown in fig. 4, 5 and 6, the stereoscopic image source 10 includes an image generating portion 11 and a stereoscopic image generating portion 12, the image generating portion 11 emits image light, and the image light at least includes a first light and a second light; the stereoscopic vision generating unit 12 is provided in the light emitting direction of the image generating unit 11, and after the image light passes through the stereoscopic vision generating unit 12, the first light is emitted to the first observation position and the second light is emitted to the second observation position, thereby forming a stereoscopic image.

In this embodiment, the first and second observation positions may be left and right eye positions of a head-up display device user, such as a driver or a passenger, both of which are located within the above-described observation region (e.g., eye box region); for convenience of explanation in this embodiment, the positions of the left eye and the right eye when the first observation position and the second observation position are used for imaging the stereoscopic image source 10 directly viewed by the user are taken as an example for explanation.

In this embodiment, the image generating portion 11 emits image light, the image light includes at least two kinds of image information, that is, the light emitted by the image generating portion 11 includes the two different sets of image information respectively corresponding to the left eye and the right eye, that is, the image light includes at least a first light corresponding to a first observing position (for example, the left eye) and a second light corresponding to a second observing position (for example, the right eye), the stereoscopic vision generating portion 12 can distinguish the first light and the second light in the image light and direct the first light and the second light to the left eye and the right eye respectively, the left eye and the right eye respectively only receive the corresponding image light, that is, only see the corresponding image, and the two eyes see different pictures at different viewing angles at this time, thereby viewing the stereoscopic vision image.

In one embodiment of the present embodiment, as shown in fig. 4, the stereoscopic vision generating portion 12 includes a barrier layer 121, the barrier layer 121 includes a plurality of barrier units, and each barrier unit is provided at intervals; each of the blocking units blocks a part of the light rays emitted from the image generating unit 11 so that the first light rays and the second light rays which are not blocked by each of the blocking units are emitted to the first observation position and the second observation position, respectively, to form a stereoscopic image. In fig. 4, the image generation unit 11 includes 8 pixel units, the barrier layer 121 includes 4 barrier units, a preset distance D exists between the barrier layer 121 and the image generation unit 11, and the barrier layer 121 can block part of light rays, for example, light rays emitted by part of the pixel units (R1, R2, R3, R4) corresponding to the image generation unit 11 cannot reach the position of the left eye, so that the left eye can only view light rays emitted by the pixel units L1, L2, L3, and L4; similarly, the right eye can only view the light emitted by the pixel units R1, R2, R3 and R4; that is, the blocking layer 121 may divide the light emitted from the image generating part 11 into two parts, and the light emitted from a part of the pixel units can only reach the left-eye position, such as the pixel units L1, L2, L3 and L4; and the light emitted from another part of the pixel cells can only reach the right eye position, such as the pixel cells R1, R2, R3 and R4. In this embodiment, different pixel units of the image generating portion 11 display two images with parallax, and through the effect of the blocking layer 121, the left eye and the right eye only receive the corresponding image light, that is, the viewed image and the viewed image of the right eye have parallax, thereby realizing stereoscopic imaging; the mode can watch the stereoscopic vision image without wearing special eyes by the user, but the user can watch a good stereoscopic vision imaging effect at a specific position.

Optionally, the barrier unit of the barrier layer 121 comprises a liquid crystal or a grating; when the blocking unit is a grating, the grating comprises a plurality of lighttight stripes which are vertically arranged, and the stripes shield light rays to display a stereoscopic vision image; when the barrier unit is a liquid crystal, the liquid crystal includes a polarizing film and a liquid crystal layer, a series of vertical stripes with 90 ° direction are manufactured by the liquid crystal layer and the polarizing film, the width of the stripes is at pixel level, a vertical fine stripe pattern is formed, and switching of display of a plane image or a stereoscopic image can be realized by controlling the on-off state of the liquid crystal layer, for example, when a user needs to watch the plane image, the liquid crystal of the barrier layer 121 operates to be in a transparent state, light is not blocked, and then the plane image is displayed; when a stereoscopic image needs to be viewed, the liquid crystal of the blocking layer 121 does not work, and the liquid crystal blocks light, so that the stereoscopic image can be viewed by the eyes of a user positioned at the first observing position and the second observing position.

In another embodiment of the present embodiment, as shown in fig. 5, the stereoscopic vision generating portion 12 includes a lenticular lens layer 122, the lenticular lens layer 122 includes a plurality of lenticular lenses, and the lenticular lens layer 122 is configured to change the propagation direction of the light rays emitted from the image generating portion 11, so that the first light rays and the second light rays passing through the lenticular lens layer 122 are emitted to the first observation position and the second observation position, respectively, to form the stereoscopic vision image. In the present embodiment, the lenticular lens layer 122 includes a plurality of vertically arranged lenticular lenses, and each lenticular lens covers at least two different columns of pixel cells of the image generating section 11; the cylindrical lens is used for emitting light rays emitted by pixel units in one column to the left eye and emitting light rays emitted by pixel units in the other column to the right eye, so that a stereoscopic image can be formed. In fig. 5, the image generating part 11 includes 8 columns of pixel units, the lenticular lens layer 122 includes 4 cylindrical lenses, each cylindrical lens covers two columns of pixel units, and based on the refractive characteristics of the cylindrical lenses, the light emitted from one column of pixel units can pass through the cylindrical lenses and then be emitted to the left eye, for example, the light emitted from the pixel unit L1 is emitted to the left eye position; meanwhile, light emitted by another column of pixel units is emitted to the right eye after passing through the cylindrical lens, for example, light emitted by the pixel unit R1 is emitted to the right eye position; for example, the light rays emitted by the pixel cells R1, R2, R3, R4, and the like may converge to a right eye position, and the light rays emitted by the pixel cells L1, L2, L3, L4, and the like may converge to a left eye position, so that the user views a stereoscopic image at the first observation position and the second observation position with both eyes.

Optionally, the cylindrical lens includes one or more of a plano-convex cylindrical lens, a biconvex cylindrical lens, a meniscus cylindrical lens, a cylindrical cross cylindrical lens, a special-shaped cylindrical lens and a combination of the above lenses; the cylindrical lenses at different locations may differ in diopter (the ability to change the direction of light by refraction), which may be more advantageous for refracting light toward the eyes of the user.

In still another embodiment of the present embodiment, the image generating part 11 includes a driving unit for alternately and sequentially turning on and off the image generating part 11 so that the image generating part 11 alternately and sequentially emits the first light and the second light; the stereoscopic vision generating portion 12 includes a first surface 1201 and a second surface 1202 which are arranged in an opposite manner, the first surface 1201 includes a plurality of prism portions, the second surface 1202 includes a plurality of curved cylindrical mirror portions, and the prism portions and the curved cylindrical mirror portions are arranged in a one-to-one correspondence manner; the first light and the second light, which are alternately and sequentially emitted, are incident on the first surface 1201 and alternately and sequentially emitted to the first observation position and the second observation position through the second surface 1202.

In this embodiment, as shown in fig. 6, the prism portions and the curved cylindrical lens portions are arranged in a one-to-one correspondence; the image generating unit 11 alternately generates first light and second light corresponding to left and right eyes, the prism portion of the first surface 1201 directs the light to the left eye position of the user in a first time period, and directs the light to the right eye position in a second time period, so as to distinguish the first light and the second light corresponding to the left and right eyes, and the first light and the second light are alternately and sequentially emitted to the left and right eyes through the curved cylindrical lens portion of the second surface 1202, the first time period and the second time period are short, for example, the frequency of alternation of the first time period and the second time period is greater than or equal to 50 Hz; for example, the alternating frequency of the first time period and the second time period is equal to or higher than 100Hz, so that the alternating display is performed at a frequency at which flicker cannot be distinguished by human eyes, and left and right eyes can simultaneously perceive the corresponding pictures in sense, thereby viewing a stereoscopic image. Optionally, the curved lenticular portion comprises a cylindrical or non-cylindrical shape and the prism portion comprises a triangular prism array.

In the embodiment, the longitudinal axis of the prism part is basically parallel to the extension line of the curved cylindrical lens part; the prism part comprises a solid transparent material, for the light rays incident from the convex end of the prism part (namely the light rays emitted by the image generating part 11), the emitted light rays can be converted into the light rays close to the direction vertical to the plane of the prism part through the actions of reflection, refraction and the like, and the incident light rays have different angles and the emitted light rays have different angles; further passes through the lens portion and is refracted again, and finally exits from the stereoscopic vision generating portion 12. That is, the prism portion and the lens portion change the direction of the light, and the image generating portion 11 alternately emits the first light and the second light in time sequence in cooperation with the time sequence, so that the first light and the second light can be alternately emitted to the left eye and the right eye in time sequence, respectively, thereby viewing the stereoscopic image.

The embodiment of the utility model provides an in, through the stereovision generation portion 12 that sets up different embodiments, the light that image generation portion 11 was emergent passes through stereovision generation portion 12 back, first light and second light wherein can be emergent respectively to first observation position and second observation position, make stereovision image source 10 form stereovision image, and then make the new line display system can form stereovision virtual image V, stereovision virtual image V compares with ordinary plane virtual image, it is good with the cooperation display effect of actual stereoreal scene, the practicality and the use experience that have improved new line display device.

On the basis of the above-described embodiment of the present invention, as shown in fig. 7, the image generating section 11 includes: at least one light source 111, the light source 111 emitting light; a light guide element 112 for collecting a portion of the light emitted from the light source 111 toward the center of the light guide element 112; a light condensing element 113 for condensing the light incident thereto through the light guide element 112 to a predetermined region; a light diffusing element 114 for diffusing the light condensed by the light condensing element 113 and incident on the light diffusing element 114; and a liquid crystal panel 115 for converting the light diffused by the light diffusion element 114 and incident on the liquid crystal panel 115 into image light and emitting the image light.

In this embodiment, the number of the light sources 111 is at least one, and the light sources 111 include elements capable of emitting light, for example, electroluminescent elements capable of generating light by being excited by an electric field; the electroluminescent element includes a Light Emitting Diode (LED), an Organic Light-Emitting Diode (OLED), a Mini LED (Mini LED), a Micro LED (Micro LED), a Cold Cathode Fluorescent Lamp (CCFL), a Cold Light source (Cold LED Light, CLL), an Electro Luminescence (EL), an electron Emission (Field Emission Display, FED), or a Quantum Dot Light source (Quantum Dot, QD), etc.; the light source 111 may emit mixed light such as white light, for example, the light source 111 includes a white LED light emitting element of RGB (red, green, blue) mixed light; the light source 111 may also emit monochromatic light; the light sources 111 may emit light of the same color or light of different colors, which is not limited in this embodiment.

In this embodiment, as shown in fig. 8, the light guide element 112 collects part of the light emitted from the light source 111 toward the center of the light guide element 112; specifically, light emitted from the light source 111 propagates in the light guide element 112, a reflective surface is disposed on an inner surface (an inner surface facing the light source 111) of the light guide element 112, and a part of the light emitted from the light source 111, specifically, a large-angle light (a light shown by a dashed line in the figure); the high angle light may be light having a divergence angle greater than or equal to 15 degrees, 30 degrees, 45 degrees, 60 degrees, or 75 degrees, specifically the angle between the light and the central light emitted by the light source 111; under the condition that the light guide element 112 is not arranged, the large-angle light is emitted to the periphery and is difficult to reach the liquid crystal panel 115 for imaging; after the light guide element 112 is disposed, the light is reflected by the reflective surface and then collected to the center of the light guide element 112, thereby improving the utilization rate of the light emitted from the light source 111.

Optionally, the light guiding element 112 includes a hollow shell with an internal reflection surface, as shown in fig. 8, the hollow shell includes an opposite light outlet opening 1122 and an opposite end opening 1121, light emitted from the light source 111 enters the hollow shell through the end opening 1121, and is reflected by the internal reflection surface, and the reflected light exits to the light collecting element 113 through the light outlet opening 1122; the light source 111 is disposed at the end opening 1121, either outside the end opening 1121 or inside the end opening 1121 (e.g., inside a hollow housing); part of the light emitted from the light source 111 is reflected by the internal reflection surface, the reflected light exits to the light collecting element 113 through the light exit opening 1122, and the other part of the unreflected light is directly transmitted to the light collecting element 113. The hollow shell can be in a triangular pyramid shape, a quadrangular pyramid shape or a paraboloid shape; preferably, the hollow housing has a quadrangular pyramid shape, the end opening 1121 and the light-emitting opening 1122 of the quadrangular pyramid-shaped hollow housing may have a circular shape, an oval shape, a rectangular shape, a square shape, a trapezoidal shape, or a parallelogram shape, and the shapes of the end opening 1121 and the light-emitting opening 1122 may be the same or different.

Alternatively, the light guide element 112 may be a solid transparent member, as shown in fig. 9 and 10. The solid transparent component comprises an end 1123 for arranging the light source 111 and a light emitting surface 1124 for emitting light; the refractive index of the solid transparent member is greater than 1, a part of light (for example, high-angle light) emitted by the light source 111 is totally reflected on the internal reflection surface of the solid transparent member and exits, and another part of light emitted by the light source 111 is transmitted and exits in the solid transparent member. Further, the end 1123 of the solid transparent member where the light source is disposed is provided with a cavity 1125, and a collimating part 1126 capable of collimating the light is further disposed on a side of the cavity 1125 close to the light emitting surface 1124, as shown in fig. 9; alternatively, the light-emitting surface 1124 of the solid transparent member has an opening 1127 extending toward the end 1123, and the bottom surface of the opening 1127 near the end 1123 is further provided with a collimating part 1126 capable of collimating the light rays, as shown in fig. 10. Specifically, the collimating part 1126 includes a collimating lens, including but not limited to at least one of a convex lens, a fresnel lens, a concave lens, or a combination thereof; the collimating part 1126 may be made of the same material as the solid transparent member, and is easily formed integrally.

In this embodiment, as shown in fig. 11, the light condensing element 113 is used to condense the light incident on the light guiding element 112 to a predetermined region, so as to further condense the light and improve the light utilization rate. The light converging element 113 may be a lens or a lens combination, such as a convex lens, a fresnel lens or a lens combination, etc., and fig. 11 schematically illustrates the convex lens as an example; it is understood that the predetermined area may be a point, such as a focal point of a convex lens, or a smaller area, and the light converging element 113 is disposed to further converge the light emitted from the light source 111 and control the direction of the light, so that at least most of the light is emitted to the predetermined area, thereby improving the utilization rate of the light. For example, the predetermined area may be an area where both eyes of the driver are located when the head-up display system is in use, the area covering the first observation position and the second observation position; for example, the predetermined area may be a center point between the first viewing position and the second viewing position; for example, the predetermined area may be an eye box area (eyebox); for example, the predetermined area may be the center of the eye box area.

In this embodiment, the light diffusing element 114 diffuses and emits the light that is collected by the light collecting element 113 and is incident thereto, specifically, diffuses the light into a light beam having a certain distribution angle; the smaller the angle at which the light is spread, the higher the brightness of the light beam and vice versa. The light diffusion element 114 can increase the diffusion degree of light, and can make the light uniformly distributed in a certain area; that is, the light diffusing element 114 may expand a predetermined area where light is concentrated, for example, the light diffusing element 114 may diffuse light concentrated at the center of the eye box to cover the entire eye box area.

Optionally, the light diffusing element 114 comprises a scattering optical element that diffuses light into a beam of light primarily by scattering, such as a matte or frosted sheet; alternatively, the light diffusing element 114 further includes a Diffractive Optical Element (DOE) for diffusing light into a light beam mainly by diffraction, for example, a beam shaper (beam shaper) which disperses the light beam after passing through the beam shaper and forms a light beam with a specific cross-sectional shape, including but not limited to a line, a circle, an ellipse, a square or a rectangle, and the dispersion angle and the cross-sectional shape of the light beam can be precisely controlled by controlling the microstructure of the Diffractive Optical element, so as to achieve precise control of the dispersion.

In the present embodiment, the liquid crystal panel 115 converts the light rays diffused by the light ray diffusing element 114 and incident thereto into image light rays, and emits the image light rays to the stereoscopic vision generating section 12; the light rays can form images after passing through the liquid crystal panel 115, and the light rays emitted by the liquid crystal panel 115 contain image information; specifically, the liquid crystal panel 115 is at least operable to generate a first light ray and a second light ray corresponding to a first observation position and a second observation position, respectively; the liquid crystal panel 115 includes, but is not limited to, a thin film transistor liquid crystal panel, a twisted nematic liquid crystal panel, a multi-domain vertical alignment liquid crystal panel, a planar switching liquid crystal panel, or an advanced super-dimensional field switching liquid crystal panel.

In this embodiment, the light emitted from the light source 111 passes through the light guide element 112, the light converging element 113, the light diffusing element 114, and the liquid crystal panel 115, and then is emitted to the stereoscopic vision generating portion 12 to generate a first light corresponding to the first observation position and a second light corresponding to the second observation position; by utilizing the gathering or gathering effect of the light guide element 112, the light gathering element 113, the lens module 30 and the curved reflector 21 on the light, most of the light can reach a predetermined area, and the predetermined area can be an area with a small area in an eye box area, such as the center of the eye box area, so that the light utilization rate is improved; meanwhile, the light is diffused by the light diffusion element 114, so that the light at least completely covers the eye box area, and normal observation cannot be influenced while high luminous efficiency is achieved. It will be appreciated that the diffused beam may be larger than the eye box area, as long as complete coverage of the eye box is ensured; preferably, the diffused light beam covers just the eye-box area, where the light efficiency of the heads-up display system is highest.

In the embodiment of the present invention, the light emitted from the light source 111 sequentially passes through the light guide element 112, the light gathering element 113, the light diffusing element 114, and the liquid crystal panel 115 to generate the image light, and the image light is converted into the first light pointing to the first observation region and the second light pointing to the second observation region after passing through the stereoscopic vision generating portion 12 to form the stereoscopic vision image; finally, after the light is reflected by the external imaging device 200, the reflected light converges and falls into the center of the eye box region, and further the light is precisely diffused by the light diffusion element 114, and the diffused light beam can cover the eye box region, preferably just the eye box region, so that the normal observation is not affected while the high luminous efficiency is realized.

On the basis of the above embodiments of the present invention, as shown in fig. 12, the head-up display device further includes a package housing 50 having a light outlet 51, the package housing 50 is used for installing and setting up elements of the head-up display device, when in actual use, the package housing 50 is installed inside the instrument desk of the vehicle, and the light outlet 51 is arranged on the surface of the instrument desk; the package housing 50 further includes a transparent dustproof film 52 and an anti-glare cover 53, the stereoscopic vision light reflected by the reflective element 20 is emitted to the external imaging device 200 through the light outlet 51, and the transparent dustproof film 52 is disposed at the light outlet 51, so that the reference positions of the light outlet 51 and the transparent dustproof film 52 in fig. 12 coincide; the transparent dustproof film 52 can prevent dust and impurities from entering the interior of the package housing, but does not affect the stereoscopic light rays emitted from the light outlet 51 to the external imaging device 200; meanwhile, external light, such as sunlight, can generate strong glare on the surface of the transparent dustproof film 52, so that an anti-glare cover 53 is further arranged on the outer side of the transparent dustproof film 52, and the anti-glare cover 53 can be an inclined surface which is obliquely arranged and used for preventing the glare from entering the eyes of a user, and the use experience of the head-up display system is further improved; the antiglare shield 53 does not block the propagation of stereoscopic light rays, and can block part of external light rays, such as solar rays in fig. 12. For example, the antiglare shield 53 may be made of the same material as the package case 50 and be integrally molded with the package case 50.

The embodiment of the present invention further provides a head-up display system, which includes the head-up display device 100 and the external imaging device 200 in the above embodiments, as shown in fig. 1 and fig. 2; in the present embodiment, the external imaging device 200 combines the stereoscopic light rays emitted from the reflecting element 20 into the virtual stereoscopic image V, and allows the external light rays to transmit. Specifically, the external imaging device 200 includes a Windshield or a transparent imaging window of the vehicle, which respectively correspond to a Windshield-type head-up display system (Windshield-HUD) and a combination-type head-up display system (Combiner-HUD); the stereoscopic light rays capable of forming a stereoscopic image are reflected by the reflecting element 20, emitted to the external imaging device 200, and reflected on a side surface of the external imaging device 200 close to the head-up display device 100; since the stereoscopic vision light ray itself already includes the first light ray and the second light ray oriented to the two observation positions, after being reflected sequentially by the reflecting element 20 and the external imaging device 200, the reflected light rays are respectively emitted to the first observation position and the second observation position, and the user can observe the stereoscopic vision virtual image V with both eyes corresponding to the first observation position and the second observation position; that is, when the user directly observes the stereoscopic image source 10, the stereoscopic real image is observed; when the user uses the head-up display device and the head-up display system, the stereoscopic virtual image V formed by reflection is observed, and the first observation position and the second observation position may be set in the eye box region.

On the basis of the above embodiments of the present invention, the distance between the stereoscopic image source 10 and the reflective element 20 is less than or equal to the focal length of the reflective element 20. Specifically, in the case where the reflecting element 20 is a curved mirror (that is, the reflecting surface is a concave mirror), if the distance between the stereoscopic image source 10 and the concave mirror is smaller than the focal length of the concave mirror, the concave mirror forms an orthoscopic enlarged virtual image based on the reflection of the stereoscopic image source 10; for example, according to the imaging property of the concave mirror, when the optical distance between the stereoscopic light source 10 and the concave mirror is smaller than the focal length of the concave mirror (that is, the stereoscopic light source 10 is located within one focal length of the concave mirror), the image distance of the concave mirror increases with the increase of the distance between the stereoscopic light source and the concave mirror, that is, the imaging distance of the stereoscopic virtual image V formed by the head-up display system increases as the distance between the stereoscopic light source 10 and the concave mirror increases. And, the closer the stereoscopic image source 10 is to the focal plane (i.e. the closer the distance between the two is to the focal length), the larger the imaging distance of the virtual stereoscopic image V is, and when the stereoscopic image source 10 is very close to the focal plane, such as the distance between the virtual stereoscopic image source and the focal plane is 0.1%, 0.5%, 1%, or 5% of the focal length, or the stereoscopic image source 10 is disposed at the focal plane, the imaging distance of the virtual stereoscopic image V is far away at this time, which may even be considered as being at infinity. The stereoscopic vision virtual image V at a long distance (for example, the imaging distance is more than or equal to 30m) is more suitable for carrying out enhanced display fusion with an object outside the vehicle, and the use experience of the head-up display system can be further improved.

On the basis of the above embodiments of the present invention, the external imaging device 200 often has a certain thickness, for example, a windshield; therefore, the stereoscopic vision light can form a main virtual image by surface reflection close to one side of the head-up display device, the inner surface of the transmitted image light far away from one side of the head-up display device can reflect again to form an auxiliary virtual image, and the main virtual image and the auxiliary virtual image can be seen at the same time when the head-up display system is used, so that double images are generated, and the use experience of the head-up display system is influenced.

In one embodiment of the present embodiment, as shown in fig. 13, the surface of the external imaging device 200 facing the head-up display device 100 is provided with a selective reflection film 201, and the selective reflection film 201 is configured to reflect the stereoscopic light with a first reflectance and reflect the light in the wavelength bands except the wavelength band in which the stereoscopic light is located with a second reflectance, and the first reflectance is greater than the second reflectance. Specifically, the light rays outside the wavelength band of the stereoscopic vision light ray can be light rays except the wavelength band of the stereoscopic vision light ray in visible light, and can also be light rays except the wavelength band of the stereoscopic vision light ray in solar spectrum, so that the light rays are not overlapped or rarely overlapped with the wavelength band of the stereoscopic vision light ray; the selective reflection film 201 includes a wavelength selective reflection film; the stereoscopic vision light comprises at least one of a red waveband, a green waveband and a blue waveband, for example, the full width at half maximum of each of the red waveband, the blue waveband and the green waveband is not more than 50nm, the peak position of the blue waveband is within the range of 410nm to 480nm, the peak position of the green waveband is within the range of 500nm to 580nm, and the peak position of the red waveband is within the range of 590nm to 690 nm; for example, the stereoscopic light includes a combination of a red wavelength band, a blue wavelength band, and a green wavelength band, the red wavelength band being 650nm red light, the green wavelength band being 540nm green light, and the blue wavelength band being 430nm blue light; the combined RGB stereoscopic light rays can form a color stereoscopic image, and in fig. 13, the RGB stereoscopic light rays emitted from the head-up display device are referred to as RGB stereoscopic light rays.

In the present embodiment, the reflectivity of the selective reflection film 201 for stereoscopic light is greater than the reflectivity of light in a wavelength band other than the wavelength band in which stereoscopic light is located, for example, the first reflectivity of the selective reflection film 201 for stereoscopic light may be 80%, 90%, 95%, 99.5% or other suitable values, and the second reflectivity of the selective reflection film 201 for light in a wavelength band other than stereoscopic light may be 30%, 20%, 10%, 5%, 1%, 0.5% or other suitable values; for example, the selective reflection film 201 efficiently reflects light rays in three RGB bands and transmits light rays in other bands, most of stereoscopic vision light rays are only reflected on one surface of the external imaging device 200 close to the head-up display device 100, and secondary reflection hardly occurs on the inner surface of the external imaging device 200 far away from the head-up display device 100 to form a secondary virtual image, so that ghost images are eliminated, and the use experience of the head-up display system is improved.

In another embodiment of this embodiment, the double image is eliminated or reduced by disposing the polarizing reflective film 202, as shown in fig. 14, the polarizing reflective film 202 is attached to a surface of the external imaging device 200 close to the head-up display device 100, reflects the light of the first polarization state and transmits the light of the second polarization state, and the stereoscopic light includes the light of the first polarization state. For example, the first polarization state is P-polarization state, and the second polarization state is S-polarization state; the laminating of the one side that outside image device 200 is close to new line display device 100 sets up P polarized light reflection film, the stereovision light includes the light of P polarization state, because of glass is higher to the transmissivity of P polarized light, the reflectivity is lower, consequently except the P polarized light that is reflected by P polarized light reflection film, the P polarized light that transmits glass partly can transmit out the glass outside, the light luminance of being reflected by outside image device 200 outside internal surface is very low, and then can eliminate the ghost image, promote new line display system's use and experience.

In another embodiment of this embodiment, a conversion element is disposed to eliminate or reduce the ghost, a conversion element is disposed on a side of the external imaging device 200 close to the head-up display device 100, the stereoscopic light includes S-polarized light, and the conversion element can convert the S-polarized light incident thereon into non-S-polarized light, such as P-polarized light, circularly polarized light, or elliptically polarized light, while the non-S-polarized light has a low reflectivity on an outer inner surface of the external imaging device 200 and is substantially transmitted outside the glass, so as to eliminate the ghost and improve the use experience; specifically, the conversion element may be an 1/4 wave plate or a 1/2 wave plate.

In a further embodiment of this embodiment, ghosting is eliminated or reduced by providing a wedge-shaped membrane. Specifically, outside image device 200 is double glazing's windshield, press from both sides between double glazing and establish the wedge membrane, the wedge membrane includes polyvinyl butyral (PVB) membrane, thickness that has the change, the thickness that specifically is wedge membrane upper end (the one end of keeping away from ground) is greater than the thickness of lower extreme, when making outside image device 200 reflection form stereo vision virtual image V, the main virtual image that glass inside and outside surface reflection formed and vice virtual image coincidence, make the new line display system have the function of eliminating the ghost image from this, promote the use experience.

The embodiment of the utility model provides an in, through set up in external image device 200 department at least one in selective reflection membrane 201, polarization reflective membrane 202, conversion element or the wedge membrane, all can effectively weaken or eliminate the ghost image, promote new line display system's use experience.

On the basis of the above embodiments of the present invention, when the external imaging device 200 includes a glass material, for example, a windshield; the glass has a high reflectivity for S-polarized light (S-polarized light), so that the stereoscopic light emitted by the head-up display system generally includes S-polarized light, which can improve the utilization rate of the stereoscopic light. However, in some application scenarios, for example, in the case of strong external sunlight, a user such as a driver may wear polarized sunglasses; however, polarized sunglasses filter (e.g., reflect or absorb) the S-polarized light, and thus, in the above case, the driver cannot see the virtual stereoscopic image V when wearing the sunglasses.

In this embodiment, as shown in fig. 15, the head-up display system further includes a polarization conversion device 60, the polarization conversion device 60 is disposed on a propagation path of the stereoscopic light between the reflective element 20 and the external imaging device 200, the stereoscopic light source 10 emits stereoscopic light including a first linear polarization state, the polarization conversion device 60 is configured to convert the light of the first linear polarization state incident to the polarization conversion device 60 into the stereoscopic light including a circular polarization state or an elliptical polarization state, and the converted stereoscopic light of the circular polarization state or the elliptical polarization state is reflected by the external imaging device 200 and forms a virtual stereoscopic image V. Specifically, the polarization conversion device 60 includes a quarter-wave plate, and the stereoscopic light rays include a first linear polarization state, e.g., S polarization state; the polarization conversion device 60 converts the S-polarized stereoscopic vision light incident thereto into a circularly polarized (circularly polarized) or elliptically polarized (elliptically polarized) light, and the circularly polarized or elliptically polarized light is reflected by the external imaging device 200 and then directly emitted to the first observation position and the second observation position without passing through the polarization conversion device 60, thereby forming a stereoscopic vision virtual image V; because the circularly polarized light or the elliptically polarized light comprises the P polarized component, after being filtered by the sunglasses, the light in the P polarized state enables a user wearing the sunglasses to still see the stereoscopic vision virtual image V, so that the use experience of the user is improved; specifically, the polarization conversion device 60 may be disposed at the light exit 51, and may be integrated with the transparent dustproof film 52 as an integral element, for example.

On the basis of the above embodiment of the present invention, the distance between the stereoscopic virtual image V and the external imaging device 200 includes a preset distance interval, the preset distance interval includes at least one of a 2-4 m distance interval, a 7-14 m distance interval and a 20-50 m distance interval, the three preset distance intervals are sequentially a close-range view, a middle-range view and a long-range view according to a distance increasing sequence, for example, the close-range view can display key driving data such as vehicle instruments, for example, the vehicle speed, the oil amount or the steering parameters; the medium scene picture can display a lane picture, for example, the matching and fusion effect of the medium scene picture and an actual lane is better, so that a user can see the image fusion mark of the lane and guide the user to walk the lane; the distant scene picture can be matched with a distant scene, for example, the distant scene picture can comprise a bank mark, and a bank mark image can be matched and fused with the position of a bank live scene, so that a user can see a distant building, for example, when the bank exists, the distant scene picture marks the bank mark; by enabling the stereoscopic vision virtual image V to display different contents at different imaging distances, the use scene of the head-up display system can be further expanded, and the use experience is improved.

On the basis of the above embodiments of the present invention, the stereoscopic virtual image V may be perpendicular to the ground, or may be in an inclined state with the ground, for example, an included angle of (5,90 degrees) exists between the virtual image V and the ground; specifically, the imaging distance of one end of the stereoscopic vision virtual image V far away from the ground is longer than that of one end close to the ground; the oblique stereoscopic visual virtual image V is better matched and fused with an oblique stereoscopic real scene, such as a real lane.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A head-up display device for emitting light to an external imaging device, comprising: the stereoscopic vision image source, the reflecting element, the lens module and the moving mechanism;

the stereoscopic vision image source emits stereoscopic vision rays capable of forming a stereoscopic vision image;

the reflecting element reflects the stereoscopic vision light rays incident to the reflecting element to the external imaging device, and the stereoscopic vision light rays are reflected by the external imaging device to form a stereoscopic vision virtual image;

the lens module is arranged on a propagation path of stereoscopic vision light rays between the stereoscopic vision image source and the reflecting element, transmits the stereoscopic vision light rays, and changes the direction of the stereoscopic vision light rays passing through the lens module;

the moving mechanism is used for driving the lens module to move along the propagation path of the stereoscopic vision light so as to adjust the distance between the imaging position of the stereoscopic vision virtual image and the external imaging device.

2. The heads-up display device of claim 1 wherein the lens module includes a zoom lens having an adjustable optical power.

3. The heads-up display device of claim 1 wherein the stereoscopic image source comprises an image generation section and a stereoscopic generation section;

the image generating part emits image light rays, and the image light rays at least comprise first light rays and second light rays;

the stereoscopic vision generating part is arranged in the light emitting direction of the image generating part, and after the image light passes through the stereoscopic vision generating part, the first light is emitted to a first observation position, and the second light is emitted to a second observation position, so that the stereoscopic vision image is formed.

4. The head-up display device according to claim 3, wherein the stereoscopic vision generating section includes: a barrier layer;

a preset distance is arranged between the blocking layer and the image generating part, the blocking layer comprises a plurality of blocking units, and the blocking units are arranged at intervals;

each blocking unit is used for blocking part of light rays emitted by the image generating part, so that the first light rays and the second light rays which are not blocked by each blocking unit are emitted to the first observation position and the second observation position respectively.

5. The head-up display device according to claim 3, wherein the stereoscopic vision generating section includes: a lenticular lens layer;

the lenticular lens layer includes a plurality of lenticular lenses, and the lenticular lens layer is configured to change a propagation direction of light emitted from the image generating portion, so that the first light and the second light passing through the lenticular lens layer are emitted to the first observation position and the second observation position, respectively.

6. The head-up display device according to claim 3, wherein the image generating section includes:

a driving unit for alternately and sequentially turning on and off the image generating part so that the image generating part alternately and sequentially emits the first light and the second light.

7. The head-up display device according to claim 6, wherein the stereoscopic vision generating section includes a first surface and a second surface that are opposed;

the first surface comprises a plurality of prism portions and the second surface comprises a plurality of curved cylindrical mirror portions;

the prism parts and the curved cylindrical lens parts are arranged in a one-to-one correspondence manner;

the first light rays and the second light rays which are alternately and sequentially emitted are incident to the first surface, and are alternately and sequentially emitted to the first observation position and the second observation position through the second surface.

8. The head-up display device according to claim 3, wherein the image generating section includes:

at least one light source emitting light;

the light guide element is used for gathering partial light rays emitted by the light source towards the center direction of the light guide element;

the light condensing element is used for condensing the light which is incident to the light condensing element through the light guide element to a preset area;

a light diffusion element for diffusing the light condensed by the light condensing element and incident on the light diffusion element;

and the liquid crystal panel is used for converting the light diffused by the light diffusion element and incident to the liquid crystal panel into image light and emitting the image light.

9. The heads-up display device of claim 8 wherein the light guide element comprises a hollow housing having an internal reflective surface, the hollow housing comprising opposing light exit openings and end openings;

the light emitted by the light source enters the hollow shell through the end opening, is reflected by the internal reflection surface, and is emitted to the light gathering element through the light outlet opening.

10. The heads-up display device of claim 1 wherein the reflective element comprises at least one curved mirror.

11. The heads-up display device of claim 9 wherein the reflective element further comprises at least one planar mirror.

12. The heads-up display device of claim 1 wherein the movement mechanism comprises at least one of a slide rail movement mechanism, a belt transport mechanism, or a gear translation mechanism.

13. A head-up display system comprising the head-up display device of any one of claims 1-12, and:

an external imaging device;

the external imaging device is used for reflecting the stereoscopic vision light rays emitted by the reflecting element and forming a stereoscopic vision virtual image on one side of the external imaging device, which is far away from the head-up display device.

14. The heads-up display system of claim 13 wherein a surface of the external imaging device facing the heads-up display device is provided with a selectively reflective film;

the selective reflection film is used for reflecting the stereoscopic vision light rays with a first reflectivity and reflecting the light rays of wave bands except the wave band where the stereoscopic vision light rays are located with a second reflectivity;

the first reflectivity is greater than the second reflectivity.

15. The heads-up display system of claim 13 further comprising: a polarization conversion device;

the polarization conversion device is arranged on the propagation path of the stereoscopic vision light rays between the reflecting element and the external imaging device;

the emergent stereopsis image source includes the stereopsis light of first linear polarization state, polarization conversion equipment is used for inciding to polarization conversion equipment the light of first linear polarization state converts the stereopsis light including circular polarization state or elliptical polarization state, after the conversion the stereopsis light of circular polarization state or elliptical polarization state warp outside image device reflects and forms the stereopsis virtual image.

16. The heads-up display system of claim 13 wherein the distance between the virtual stereoscopic image and the external imaging device comprises a preset distance interval;

the preset distance interval comprises at least one of a distance interval of 2-4 meters, a distance interval of 7-14 meters and a distance interval of 20-50 meters.