CN212256002U - Head-up display device and motor vehicle - Google Patents

Abstract

The utility model discloses a new line display device and motor vehicle belongs to HUD imaging technology field, and this new line display device includes image source, transflective device and light controlling means, and wherein light controlling means includes retro-reflection component and dispersion component, and the light that is used for forming the image is sent out earlier in the image source, and this light incides to transflective device, transflective device carries out primary reflection with the light that incides, and the light after this reflection incides to light controlling means, and this light is sent out to retro-reflection component after the dispersion component at first, retro-reflection component will incide light along the opposite direction outgoing of incident direction, and this outgoing light passes through dispersion component, dispersion component spreads the light that incides, and the light after this diffusion incides to transflective device, transflective device carries out secondary reflection with the light that incides, forms the virtual image, the utility model discloses can realize HUD jumbo size formation of image.

Description

Head-up display device and motor vehicle

The present application claims priority from chinese patent application No. 2019104144940, filed on.5/17/2019, the disclosure of which is incorporated herein by reference in its entirety.

Technical Field

The utility model belongs to the technical field of the HUD formation of image, specifically relate to a new line display device and motor vehicle.

Background

Vehicles become an indispensable part of modern social life, and people improve the social work and life efficiency by using various vehicles. Various kinds of drivable tools, such as various automobiles, are widely used along with the improvement of social economy and the living standard of people. However, the use of driving tools also brings a series of problems, most notably driving safety problems. Generally, a driver can pay close attention to relevant driving information on a dashboard of a driving tool to ensure reliable driving during driving, however, due to the limited volume of the driving tool, almost all the control platforms of the driving tool in the market are narrow in space, generally, in order to improve the utilization rate of the operation platform of the driving tool, the dashboard of the driving tool is designed below the control platform, so that the driver needs to look at the relevant information on the dashboard through head lowering during driving, in addition, the action frequency of looking at the information on the dashboard through head lowering is very high during actual driving, and the driver is likely to be distracted during head lowering, so that traffic accidents are caused.

The HUD (head up display) technology can avoid distraction caused by the driver looking down at the instrument panel in the driving process, thereby ensuring the driving safety. Particularly, due to the fact that HUD related products are arranged in the driving tool, on one hand, the driving safety coefficient can be improved; on the other hand, the use of the HUD related products can bring better driving experience, and the current high-tech living demands are met.

There are many conventional HUD products, such as HUD front load products and HUD rear load products; the volume size of the HUD after-loading product is certain, the HUD image display size is small, and more abundant information, such as other complex safety information, cannot be displayed.

Traditional HUD front-mounted product mainly utilizes windshield imaging in the driving tool, HUD image display size is bigger than HUD rear-mounted product, but also has certain defect based on windshield imaging, it is very little that angle of Field (Field of View) is usually very small, it is usually only within 10 degrees to arrive the numerical value definitely, this leads to actual HUD portraits display size still very little, generally also can only show speed of a motor vehicle or direction information, can not show abundanter navigation map information and other complicated safety information, be difficult to satisfy the driver's demand at the all kinds of information of driving tool driving in-process, so use driving tool windshield imaging's large screen HUD and be receiving more and more attention.

The existing display imaging technology cannot fundamentally solve the problem of large-size HUD display and also brings other series of problems, but when the display imaging technology utilizes a backlight source for imaging, only a few parts of light rays emitted by the backlight source are used for imaging, so that the imaging brightness is low, although the problem of low imaging brightness can be solved by improving the power of a light source, the problems of high power consumption and large heat productivity of the light source can be correspondingly brought, so that the heat dissipation requirement on light source equipment is increased, and the problem of poor utilization rate of the light rays of the light source cannot be fundamentally solved; the existing display imaging technology can generate the problem of unstable distorted pictures.

In short, the HUD large-size display cannot be realized by the existing devices and the prior art, and a novel head-up display device needs to be provided to meet the HUD large-size display.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the not enough that HUD display technology exists among the prior art, be difficult to realize jumbo size HUD image display, the utility model provides a new line display device and motor vehicle not only can realize HUD jumbo size formation of image, can also realize HUD jumbo size formation of image.

The technical scheme is as follows: in order to achieve the above object, the utility model discloses a new line display device, including the image source, the device that reflects and light controlling means thoroughly, wherein:

an image source that emits light for forming an image;

a transflective device that reflects light incident thereon and allows the light to transmit;

a light control device comprising a retro-reflective element and a diffusive element; the retro-reflecting element reflects the light incident thereon in the direction opposite to the incident direction; the diffusion element diffuses light incident on the diffusion element;

the image source firstly emits light for forming an image, the light enters the transflective device, the incident light is reflected once by the transflective device, the reflected light enters the light control device, the light firstly passes through the dispersing element and then exits to the retro-reflecting element, the retro-reflecting element emits the incident light in the opposite direction of the incident direction, the emergent light passes through the dispersing element, the dispersing element diffuses the incident light, the diffused light enters the transflective device, and the transflective device reflects the incident light twice to form a virtual image.

Further, the dispersing element adopts a device which diffuses incident light to form a light beam with a specific shape.

Further, the diffusion element diffuses the incident light to form one or more beams of light with a specific shape.

Further, the cross-sectional shape of the light beam includes at least one of a line, a circle, an ellipse, a square, and a rectangle.

Further, the retroreflective element includes a substrate and a plurality of microstructures distributed on the surface of the substrate.

Furthermore, a reflecting layer is arranged between the base material and the microstructure.

Further, the reflectivity of the reflecting layer is 50% -95%, namely 50% -95% of incident light is reflected.

Further, the microstructure is a spatial structure formed by mutually perpendicular three surfaces in pairs, and the three surfaces are reflecting surfaces.

Furthermore, the space structure adopts a hollow concave structure or a solid structure made of transparent materials.

Furthermore, the micro-structure is a triangular cone structure formed by mutually perpendicular three triangles in pairs or a cubic structure formed by mutually perpendicular three rectangles in pairs.

Furthermore, at least one of the reflecting surfaces is provided with a reflecting layer, and the reflectivity of the reflecting layer is 50% -95%, namely 50% -95% of incident light is reflected.

Further, the microstructure adopts a spherical structure.

Further, the spherical structure is a solid structure made of transparent materials.

Further, the surface of the transflective device is a free-form surface or a plane.

Further, the image source adopts a projection device, the transflective device adopts a windshield of a vehicle, the projection device emits light to the windshield of the vehicle, and the light control device is arranged below the windshield of the vehicle.

Further, the projection device includes a lens section.

Another aspect of the present invention provides a motor vehicle, including the above-mentioned new line display device.

Has the advantages that: compared with the prior art, the head-up display device and the motor vehicle of the utility model comprise an image source, a transflective device and a light control device, wherein the light control device comprises a retro-reflection element and a dispersion element, and the retro-reflection element is used for reflecting the light incident on the retro-reflection element along the opposite direction of the incident direction; the diffusion element is used for diffusing the light rays incident on the diffusion element, and the diffused light rays have diffusion angles; firstly, light rays for forming an image are emitted from an image source, the light rays reach the transflective device and are reflected once by the transflective device, the reflected light rays are incident to the dispersion original, the light rays which are incident on the retroreflection element are emitted along the direction opposite to the incident direction by the retroreflection element, the emitted light rays reach the dispersion element, the dispersion element diffuses the light rays which reach the retroreflection element, the diffused light rays reach the retroreflection device and are reflected by the retroreflection device for the second time to form a virtual image, the range of the light rays irradiating on the retroreflection device is large, thereby enlarging the angle of view and the display area, so that a large-sized HUD image can be formed after the light is reflected by the transflective device, and the reflected light can be emitted to a preset area, namely an eye box area, so that a large-size HUD image can be observed, and a large-size portrait can be formed under low power consumption.

Drawings

Fig. 1 is a first schematic view of a head-up display device in embodiment 1.

Fig. 2 is a schematic structural diagram of a light control device.

Fig. 3 is a schematic diagram of a second head-up display device in embodiment 1.

Fig. 4 is a side view of the light path of light rays passing through a dispersion element to form a light beam having a linear or circular or elliptical or square or rectangular cross-section.

Fig. 5 is a top view of the light path of light rays passing through a dispersion element to form a light beam having a linear or circular or elliptical or square or rectangular cross-section.

Fig. 6 is a top view of the light path of light rays passing through a dispersion element to form a light beam having a rectangular cross section.

FIG. 7 is a top view of light passing through a dispersing element to form two shaped light beams.

FIG. 8 is a top view of the light path of light rays passing through a dispersing element to form two light beams each having a rectangular cross section.

Fig. 9 is a schematic structural view of a retroreflective element.

FIG. 10 is a schematic structural view of six triangular pyramid structures with regular triangular cross-sections.

FIG. 11 is a schematic diagram of the back reflection of a triangular pyramid with a regular triangle section in a hollow concave structure.

Fig. 12 is a schematic diagram of the back reflection of a triangular pyramid structure with a regular triangle section as a solid transparent structure.

Fig. 13 is a schematic diagram of the back reflection of a rectangular cross-section cubic structure in a hollow concave structure.

Fig. 14 is a schematic structural view of a cubic structure having a rectangular cross section, which is formed by arranging and combining hollow concave structures.

Fig. 15 is a schematic diagram of the back reflection of a rectangular cross-section cubic structure as a solid transparent structure.

Fig. 16 is a schematic diagram of spherical structure retroreflection.

Fig. 17 is a schematic view of a buried retroreflective element.

Fig. 18 is a schematic view of a sealed retroreflective element.

Fig. 19 is a first schematic view of the operation of the head-up display device in a vehicle with a windshield.

Fig. 20 is a second schematic view of the operation of the head-up display device in a vehicle with a windshield.

Fig. 21 is a schematic structural view of a triangular pyramid structure with an isosceles triangle section.

FIG. 22 is a schematic diagram of the reflection of a triangular pyramid with an isosceles triangle section in a hollow concave structure.

Fig. 23 is a schematic diagram of the back reflection when the triangular pyramid structure with an isosceles triangle section is a solid transparent structure.

Fig. 24 is a schematic structural view of a retroreflective element according to example 22.

Fig. 25 is a schematic view showing the circumferential distribution of the first light converging cylinder, the second light converging cylinder, and the third light converging cylinder in example 22.

FIG. 26 is a schematic view of a second arrangement of light converging layers of retroreflective elements.

FIG. 27 is a top view of a third arrangement of light converging layers for a retroreflective element.

FIG. 28 is a side view of a third arrangement of light converging layers for retroreflective elements.

Fig. 29 is a schematic diagram of the fifth light converging cylinder with quasi-linear diameter arrangement.

FIG. 30 is a top view of a planar reflective layer corresponding to a light converging layer of a retroreflective element.

FIG. 31 is a side view of a structure of a planar reflective layer corresponding to a light converging layer of a retroreflective element.

Fig. 32 is a graph showing quasi-linear relationship between the diameters of the light reflecting cylinder and the fifth light converging cylinder and the amount of phase change.

FIG. 33 is a partial optical path schematic of a full window large HUD.

Fig. 34 is a schematic structural view of a retroreflective element having reflective microstructures.

Fig. 35 is a schematic enlarged view of a structure in which a reflective layer is provided on the reflective surface of the reflective microstructure.

Fig. 36 is a schematic view of a film stack structure.

Figure 37 is a schematic view of a retroreflective element disposed on an outer support member.

Reference numerals: 1. an image source; 2. a transflective device; 3. a light control device; 300. a dispersion element; 3000. a light diffusion layer; 3001. a light directing layer; 301. a retro-reflective element; 3010. a reflective microstructure; 3011. a substrate; 3012. a filler; 3013. a reflective layer; 3014. an outer support member; 4. light rays; 5. a light beam; 6. a buried retroreflective element; 600. a transparent material; 601. a light-reflecting layer; 602. carrying out gum application; 603. backing paper; 604. a first microstructure; 7. a sealed retroreflective element; 700. a fixed layer; 701. carrying out gum application; 702. backing paper; 703. a boss portion; 704. a first isolation layer; 705. a second microstructure; 706. a transparent cover sheet layer; 800. a light converging layer; 801. a second isolation layer; 802. a planar reflective layer; 803. a substrate; 8000. a fifth light converging cylinder; 8001. a first material layer; 8002. a light converging unit; 9000. a light reflecting cylinder; 9001. a second material layer; 9002. a planar reflective unit.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example 1

A head-up display device of the present embodiment, referring to fig. 1, includes an image source 1, a transflective device 2, and a light control device 3, wherein the image source 1 is used for emitting light for forming an image; the transflective device 2 is used for reflecting light rays incident thereon and allowing the light rays incident thereon to be transmitted; referring to fig. 2, the light control device 3 includes a back reflection element 301 and a diffusion element 300, the diffusion element 300 is disposed above the back reflection element 301, light incident on the light control device 3 first reaches the diffusion element 300 and then reaches the back reflection element 301 through the diffusion element 300, the back reflection element 301 is configured to reflect the light incident thereon in a direction opposite to the incident direction, the diffusion element 300 is configured to diffuse the light incident thereon, the light is diffused by the diffusion element to form a light beam with a certain diffusion angle, and the light beam may be regular or irregular in shape; the position relation among the image source 1, the transflective device 2 and the light control device 3 refers to fig. 1, light emitted by the image source 1 and used for forming an image is transmitted to the transflective device 2, the transflective device 2 reflects light incident on the transflective device and then transmits the reflected light to the light control device 3, the light control device 3 re-emits the incident light, the re-emitted light is required to reach the transflective device 2, the transflective device 2 re-reflects light incident on the transflective device, the reflected light reaches a predetermined area, the predetermined area comprises an eye box area, and the eye box area refers to an area where images can be observed by two eyes.

Referring to fig. 3, light for forming an image is firstly emitted from an image source 1, the light is incident on a transflective device 2 and is reflected for the first time by the transflective device 2 (the first reflection refers to the first reflection relative to the transflective device 2 itself), the reflected light reaches a light control device 3, the light reaching the light control device 3 firstly reaches a dispersion element 300 and is diffused after passing through the dispersion element 300, the diffused light is emitted to a retro-reflection element 301, the retro-reflection element 301 emits the light incident thereon along the opposite direction of the incident direction, the emitted light reaches the dispersion element 300 above again, the dispersion element 300 diffuses the light incident thereon again to form a light beam with a certain diffusion angle, the light beam with a certain diffusion angle reaches the transflective device 2, the light incident thereon is reflected for the second time by the transflective device 2 (the second reflection refers to the second reflection relative to the transflective device 2 itself), form the virtual image, the light outgoing of reflection is to predetermined region, and the scope of light irradiation on transflection device is great, and has the diffusion angle after light is diffused by diffusion element, so light just can form jumbo size HUD image after being reflected by transflection device, and can be emergent to predetermined region by the light after the reflection, and predetermined region is that the eye box is regional, can guarantee like this to observe jumbo size HUD image.

Can set up the anti-membrane of passing through on the anti-device of passing through on the basis of above-mentioned scheme, the anti-membrane of passing through on the anti-device of passing through can be but not limited to locate the anti-device of passing through and be close to one side of image source on, the effect of this anti-membrane of passing through is that the light that sends the image source carries out high-efficient reflection, can come in with the high-efficient transmission of external environment light simultaneously, and the high-efficient luminance that utilizes incident light can improve the virtual image.

Example 2

The head-up display device of this embodiment, on the basis of the above-mentioned embodiments of the present invention, wherein the dispersion element adopts a device that diffuses the incident light to form a light beam with a specific shape, the dispersion element diffuses the incident light to form a light beam with a specific shape, the light beam with a specific shape means that the cross-sectional shape of the light beam is a specific regular shape, and the cross-sectional shape of the light beam can be, but is not limited to, a linear shape, a circular shape, an oval shape, a square shape or a rectangular shape;

the diffusion element 300 can adopt a device for diffusing incident light to form a beam of light with a specific shape, and by adopting the device, the diffusion element 300 diffuses the incident light to form a beam of light with a specific shape, referring to fig. 4-6, the light 4 passes through the diffusion element 300 and is diffused by the diffusion element 300 to form a beam of light 5 with a specific shape, the degree of diffusion, namely the diffusion angle, of the beam of light 5 depends on the diffusion element 300, and the size of the diffusion angle of the beam of light with a specific shape directly determines the size of a visible range and the brightness of a finally formed virtual image; the specific relation is that the smaller the diffusion angle is, the higher the imaging brightness is, and the smaller the visual angle is; conversely, the larger the diffusion angle is, the lower the imaging brightness is, and the larger the visual angle is; it is necessary to design a reasonable beam spread angle so that the brightness and the visual angle of the image are within the ideal range.

Referring to fig. 3, the image source 1 emits light for forming an image, the light enters the transflective device 2 and is reflected once by the transflective device 2 (the first reflection is the first reflection with respect to the transflective device 2 itself), the reflected light reaches the light control device 3, the light reaching the light control device 3 first reaches the dispersing element 300 and is diffused by the dispersing element 300 to form a light beam, and then exits to the retro-reflecting element 301, the retro-reflecting element 301 emits the light beam entering thereto in the opposite direction of the incident direction, the emitted light reaches the dispersing element 300 above again, the dispersing element 300 diffuses the light incident thereto again to form a light beam with a specific shape, the two-time diffusion of the light beam by the dispersing element 300 determines the cross-sectional shape of the finally formed light beam, and the light beam with the specific shape reaches the transflective device 2, the transflective device 2 performs secondary reflection on the light beams incident thereon (the secondary reflection refers to secondary reflection relative to the transflective device 2 itself) to form virtual images, and the reflected light rays are emitted to a predetermined area; in this embodiment, the dispersing element 300 diffuses the light to form a beam of a specific shape, and the light energy in the beam is uniformly distributed. The light beam with a specific shape is irradiated on the transflective device to be reflected to form a virtual image, the energy of the light beam with the specific shape is concentrated, an image formed after the light beam irradiated on the transflective device is reflected is a high-brightness image, and finally the reflected light falls into the eye box area.

Example 3

The head-up display device of the present embodiment is based on the above embodiments of the present invention, wherein the dispersing element 300 may be, but is not limited to, a diffractive optical element, and the diffractive optical element may be, but is not limited to, a beam shaping element (beam shaper) capable of forming a plurality of beams with specific shapes; refer to the drawings4-5, after passing through the diffusion element 300, the light 4 is diffused to form a light beam 5 with a specific shape, the size and shape of the light spot (the cross-sectional shape of the light beam 5 corresponds to the shape of the light spot) of the light beam 5 is determined by the microstructure of the diffractive optical element itself, and the shape of the light spot can be, but is not limited to: linear, circular, elliptical, square, and rectangular. Referring to FIG. 4, FIG. 4 is a side view of the optical path system corresponding to the light beam 4 passing through the dispersion element 300 to form a light beam with a linear, circular, elliptical, square or rectangular cross section, where θ_VRepresenting the angle, theta, between the two maximum viewing axes in the vertical direction of the light after passing through the diffusing element_VAnd 2 α, α represents the angle of the feature axis, which is the dashed line position shown in fig. 4, with the maximum view axis in the perpendicular direction. Referring to FIG. 5, FIG. 5 is a top view of the optical path system corresponding to the light beam 4 passing through the dispersion element 300 to form a light beam with a linear or circular or elliptical or square or rectangular cross section, where θ_HRepresenting the angle, theta, between the two maximum viewing axes of the light rays in the horizontal direction after passing through the dispersion element _H2 β, β represents the angle of the feature axis, which is the dashed line position shown in fig. 5, with the maximum view axis in the horizontal direction; fig. 6 is a top view of an optical path system corresponding to a light beam 5 having a rectangular cross section formed by a light ray 4 passing through a dispersing element 300.

Example 4

The head-up display device of this embodiment, on the basis of the above-mentioned embodiments of the present invention, wherein the dispersion element adopts a device that diffuses the incident light to form a light beam with a specific shape, the dispersion element diffuses the incident light to form a light beam with a specific shape, the light beam with a specific shape means that the cross-sectional shape of the light beam is a specific regular shape, and the cross-sectional shape of the light beam can be, but is not limited to, a linear shape, a circular shape, an oval shape, a square shape or a rectangular shape;

in order to diffuse light rays to different directions, enlarge the visible range and improve the utilization rate of light rays emitted by an image source, wherein the diffusion element 300 can adopt a device for diffusing incident light rays to form a plurality of beams with specific shapes, and by adopting the device, the diffusion element 300 diffuses the incident light rays to form a plurality of beams with specific shapes, the plurality of beams refer to two beams or more than two beams, the cross-sectional shapes of the formed beams can be the same, the cross-sectional shapes of the formed beams can also be different, and the light energy distribution of the formed beams is uniform;

referring to fig. 7 and 8, the light 4 is diffused by the diffusion element 300 through the diffusion element 300 to form two beams 5 with specific shapes, the degree of diffusion, i.e. the magnitude of the diffusion angle, of the two beams 5 with specific shapes is determined by the diffusion element 300 itself, and the magnitude of the diffusion angle of the beams with specific shapes directly determines the size and brightness of the virtual image formed finally; the specific relation is that the smaller the diffusion angle is, the higher the imaging brightness is, and the smaller the visual angle is; on the contrary, the larger the diffusion angle is, the lower the imaging brightness is, and the larger the visual angle is; therefore, the reasonable light beam diffusion angle needs to be designed, so that the brightness and the visual angle of the image are within the ideal range; the two beams 5 of the specific shape diffused by the diffusion element 300 have the same cross-sectional shape, and the energy distribution of the light is uniform.

Referring to fig. 3, the image source 1 emits light for forming an image, the light is incident on the transflective device 2 and is reflected once by the transflective device 2 (the first reflection means the first reflection with respect to the transflective device 2 itself), the reflected light reaches the light control device 3, the light reaching the light control device 3 first reaches the dispersing element 300 and passes through the dispersing element 300 and then exits to the retro-reflecting element 301, the retro-reflecting element 301 emits the light incident thereon in the opposite direction of the incident direction, the emitted light reaches the upper dispersing element 300 again, the dispersing element 300 diffuses the light incident thereon to form two light beams having a specific shape, the two light beams having a specific shape reach the transflective device 2, the transflective device 2 reflects the light beam incident thereon twice (the second reflection means the second reflection with respect to the transflective device 2 itself), and forming a virtual image, and emitting the reflected light rays to two areas, wherein one area is an eye box area. The multi-beam dispersion element can improve the light effect and can also realize the application of multi-view viewing and the like. In the embodiment, the diffusion element emits two or more beams with specific shapes, the beams are separated from each other, the separated beams are irradiated on the transflective device and reflected by the transflective device, and the reflected beams are emitted to corresponding areas.

Example 5

The head-up display device of the present embodiment is based on the above embodiments of the present invention, wherein the dispersing element 300 may be, but is not limited to, a diffractive optical element, and the diffractive optical element may be, but is not limited to, a beam shaping element (beam shaper) capable of forming a plurality of beams with specific shapes. For a diffusing element that can diffuse out multiple beams,

specifically, this dispersion element includes light diffusion layer and light orientation layer, is equipped with light diffusion layer and light orientation layer in proper order along incident light's incident direction, and wherein light orientation layer shines light to a plurality of different directions, and light diffusion layer diffuses a plurality of not equidirectional light into a plurality of light beams, realizes that dispersion element can become the light beam of multiple specific shape with light diffusion, and this dispersion element also can be called many light beam dispersion element.

Example 6

The head-up display device of the present embodiment, on the basis of the above-mentioned embodiment of the present invention, referring to fig. 3, includes an image source 1, a transflective device 2 and a light control device 3, wherein the image source 1 is used for emitting light for forming an image; the transflective device 2 is used for reflecting light rays incident thereon and allowing the light rays incident thereon to be transmitted; referring to fig. 2, the light control device 3 includes a retro-reflective element 301 and a dispersing element 300, the dispersing element 300 is disposed above the retro-reflective element 301, light incident on the light control device 3 first reaches the dispersing element 300, then passes through the dispersing element 300, and then reaches the retro-reflective element 301, the retro-reflective element 301 is configured to reflect light incident thereon in a direction opposite to the incident direction, and the dispersing element 300 is configured to diffuse light incident thereon.

Referring to fig. 9, the retroreflective element 301 includes a substrate 3011 and a plurality of reflective microstructures 3010 distributed on the surface of the substrate 3011, and the reflective microstructures 3010 are uniformly distributed on the surface of the substrate 3011, and all the microstructures have the same structure, wherein a reflective layer is disposed between the substrate 3011 and the reflective microstructures 3010, when light is incident on the retroreflective element 301, the light first passes through the reflective microstructures 3010 and then exits, and the reflective layer between the substrate 3011 and the reflective microstructures 3010 can reflect the light entering the reflective microstructures 3010; a reflective layer can be integrally formed with reflective microstructures 3010 or a reflective layer can be integrally formed with substrate 3011 or a reflective layer can exist separately between substrate 3011 and reflective microstructures 3010 or otherwise. When light enters the retroreflective element 301, the light first enters the microstructure, and the light reaches the inside of the microstructure to be reflected once or more, and finally exits in the opposite direction of the incident direction of the light, so that the retroreflective element 301 can reflect in the opposite direction of the incident light.

The reflecting layer can be a reflecting layer with high reflectivity, the reflecting efficiency of the reflecting layer can be 50% -95%, namely 50% -95% of incident light can be reflected, so that the light reflecting efficiency can be improved, and the utilization rate of light emitted by the image source is further improved.

Example 7

The new line display device of this embodiment the utility model discloses on the basis of the above-mentioned embodiment, reflection microstructure 3010 is the spatial structure that two liang of mutually perpendicular of three face are constituteed, and wherein three face is the plane of reflection, and this spatial structure adopts hollow sunk structure or the solid construction that forms by the transparent material preparation.

Specifically, the microstructure can be a triangular cone structure formed by mutually perpendicular three triangles in pairs or a cubic structure formed by mutually perpendicular three rectangles in pairs; when the microstructure is a triangular cone structure formed by mutually perpendicular three triangles in pairs and is a hollow concave structure, at least one surface of the reflecting surface is provided with a reflecting layer, and the reflectivity of the reflecting layer is 50-95 percent; when the microstructure is a cubic structure formed by three rectangles which are mutually vertical in pairs and is a hollow concave structure, at least one surface of the reflecting surface is provided with a reflecting layer, and the reflectivity of the reflecting layer is 50-95 percent; the scheme can improve the reflection efficiency of the light, thereby improving the back reflection efficiency of the back reflection element and improving the utilization rate of the emergent light of the image source. When the microstructure is a triangular cone structure formed by mutually perpendicular three triangles in pairs and adopts a solid structure made of transparent materials, at least one surface of the reflecting surface is provided with a reflecting layer, and the reflectivity of the reflecting layer is 50% -95%; when the microstructure is a cubic structure formed by three rectangles which are perpendicular to each other in pairs and adopts a solid structure made of transparent materials, at least one surface of the reflecting surface is provided with a reflecting layer, and the reflectivity of the reflecting layer is 50% -95%; according to the scheme, the reflection efficiency of the light rays of the reflection microstructure can be further improved, so that the back reflection efficiency of the back reflection element is further improved, and the utilization rate of the emergent light rays of the image source is improved.

Above-mentioned triangular pyramid structure is two liang mutually perpendicular of three triangle-shaped and constitutes, and this triangular pyramid structure has only one right angle summit, and a plurality of micro-structure distributes on the substrate surface, and a plurality of triangular pyramid structure distributes on the substrate surface promptly, and the right angle summit that the triangular pyramid structure corresponds is located and is close to substrate surface one side or is located the one side of keeping away from the substrate surface, and evenly distributed has a plurality of right angle summit to be protruding on the substrate surface promptly.

In a similar way, above-mentioned cube structure is two liang mutually perpendicular constitution of three rectangular face, and this cube structure has at least one right angle summit, and a plurality of micro-structure distributes on the substrate surface, and a plurality of cube structure distributes on the substrate surface promptly, and the right angle summit that the cube structure corresponds is located and is close to substrate surface one side or is located the one side of keeping away from the substrate surface, and evenly distributed has a plurality of right angle summit to be protruding on the substrate surface promptly.

Example 8

On the basis of the above embodiments of the present invention, the reflection micro-structure 3010 is a triangular pyramid structure with a cross section of regular triangle, the triangular pyramid structure is formed by three right-angled isosceles triangles which are perpendicular to each other two by two, and the tangent plane of the triangular pyramid structure is regular triangle, wherein the three right-angled isosceles triangles are three reflection planes;

referring to fig. 11, fig. 11 is a schematic light path diagram of a triangular pyramid structure with a regular triangle cross section, the triangular pyramid structure is a hollow concave structure, and incident light enters the retro-reflection element, and because the triangular pyramid structure is a hollow concave structure, the incident light directly enters the triangular pyramid structure, and is reflected by three reflection surfaces of the triangular pyramid structure in sequence and then reflected out in a direction opposite to the incident direction of the incident light, so that the retro-reflection element emits light in a direction opposite to the incident direction of the incident light.

The triangular cone structure with the regular triangle section can be but is not limited to a hollow concave structure;

the three reflecting surfaces in the triangular cone structure can be coated with high reflecting layers for improving the reflection efficiency of light;

referring to fig. 10, a schematic structural view is shown in which six triangular pyramid structures are regularly arranged and combined, the cross section of the structure is a regular hexagonal honeycomb structure, the reflection efficiency of the structure to incident light is very high, and when the incident light is perpendicular to the tangent plane of one of the triangular pyramid structures, the reflection efficiency of the incident light reaches the highest.

Example 9

On the basis of the above embodiments of the present invention, the reflection micro-structure 3010 in this embodiment adopts a triangular pyramid structure with a cross section of regular triangle, the triangular pyramid structure is formed by three right-angled isosceles triangles which are perpendicular to each other two by two, the tangent plane of the triangular pyramid structure is regular triangle, wherein the three right-angled isosceles triangles are three reflection planes;

referring to fig. 12, fig. 12 is a schematic light path diagram of a triangular pyramid structure with a cross section of a regular triangle, the triangular pyramid structure is a solid structure made of a transparent material, incident light is incident to a retro-reflection element, and because the triangular pyramid structure is a solid structure, the incident light is refracted to enter the triangular pyramid structure and is sequentially reflected by three reflection surfaces of the triangular pyramid structure, and finally is refracted out through the triangular pyramid structure, and the refracted light is emitted along the opposite direction of the incident direction of the original incident light, so that the retro-reflection element emits light along the opposite direction of the incident light.

In this embodiment, by controlling the refractive index of the solid structure, the light can be totally reflected on the internal reflection surface, and multiple total reflections are utilized to realize high-efficiency reflection.

The triangular cone structure with the regular triangle section can be but is not limited to a triangular cone structure with a regular triangle section; a high reflection layer may be coated on three opposite sides of the solid transparent structure for improving the reflection efficiency of light.

Example 10

In the head-up display device of this embodiment, on the basis of the above-mentioned embodiment of the present invention, the reflection microstructure 3010 in this embodiment adopts a triangular pyramid structure with an isosceles triangle cross section, the tangent plane of the triangular pyramid structure is an isosceles triangle, and three surfaces constituting the triangular pyramid structure are reflection surfaces;

referring to fig. 22, fig. 22 is a schematic light path diagram of a triangular pyramid structure with an isosceles triangle cross section, the triangular pyramid structure is a hollow concave structure, and an incident light ray enters the retro-reflective element, and because the triangular pyramid structure is a hollow concave structure, the incident light ray directly enters the triangular pyramid structure, and is reflected by three reflecting surfaces of the triangular pyramid structure in sequence and then reflected out in a direction opposite to the incident direction of the incident light ray, so that the retro-reflective element emits the light ray in a direction opposite to the incident direction of the incident light ray.

The triangular cone structure with the isosceles triangle section can be but is not limited to a hollow concave structure;

the three reflecting surfaces in the triangular cone structure can be coated with high reflecting layers for improving the reflection efficiency of light;

referring to fig. 21, a schematic diagram of a structure formed by regularly arranging and combining six triangular pyramid structures is shown, the reflection efficiency of the structure to incident light is very high, and when the incident light is perpendicular to a tangent plane of one of the triangular pyramid structures, the reflection efficiency of the light reaches the highest.

Example 11

In the head-up display device of this embodiment, on the basis of the above-mentioned embodiment of the present invention, the reflection microstructure 3010 in this embodiment adopts a triangular pyramid structure with an isosceles triangle cross section, the tangent plane of the triangular pyramid structure is an isosceles triangle, and three surfaces constituting the triangular pyramid structure are reflection surfaces;

referring to fig. 23, fig. 23 is a schematic light path diagram of a triangular pyramid structure with an isosceles triangle cross section, the triangular pyramid structure is a solid structure made of transparent material, incident light is incident to the retro-reflection element, and because the triangular pyramid structure is a solid structure, the incident light is refracted to enter the triangular pyramid structure and is sequentially reflected by three reflection surfaces of the triangular pyramid structure, and finally is refracted out through the triangular pyramid structure, and the refracted light is emitted along the opposite direction of the incident direction of the original incident light, so that the retro-reflection element emits light along the opposite direction of the incident light.

The triangular cone structure with the isosceles triangle section can be but is not limited to a solid transparent structure;

and the three reflecting surfaces of the solid transparent structure can be coated with high-reflection layers for improving the reflection efficiency of light rays.

Example 12

The new line display device of this embodiment, on the basis of the above-mentioned embodiment of the present invention, the reflection microstructure 3010 in this embodiment adopts a cubic structure with a rectangular cross section, the cubic structure includes three mutually perpendicular reflection surfaces, refer to fig. 13, fig. 13 is a schematic light path diagram of the cubic structure with a rectangular cross section, the cubic structure is a hollow concave structure, the incident light enters the retro-reflection element, because the cubic structure is a hollow concave structure, the incident light directly enters the cubic structure, after being reflected in sequence by the three reflection surfaces inside the cubic structure, the light is emitted in the opposite direction of the incident light, and the retro-reflection element is realized to emit light in the opposite direction of the incident light;

the cubic structure with the rectangular section can be but is not limited to a hollow concave structure;

the three reflecting surfaces in the cubic structure can be coated with high reflecting layers for improving the reflecting efficiency of light;

referring to fig. 14, fig. 14 is a top view of a structure formed by regularly arranging and combining a plurality of cubic structures, the structure has very high reflection efficiency for incident light, and the reflection efficiency of light reaches the highest when the incident light is perpendicular to a tangent plane of one of the cubic structures.

Example 13

The new line display device of this embodiment, on the basis of the above-mentioned embodiment of the utility model, reflection microstructure 3010 in this embodiment adopts the cross-section to be the cube structure of rectangle, this cube structure includes three mutually perpendicular's plane of reflection, refer to fig. 15, fig. 15 is the light path schematic diagram of the cube structure of rectangle for the cross-section, this cube structure is the solid construction who forms by transparent material preparation, incident ray incides to retroreflective element, because this cube structure is solid construction, so incident ray refracts and gets into the cube structure, and reflect by the three plane of reflection of cube structure in proper order, go out through cube structure refraction at last, the opposite direction outgoing of the incident direction of original incident ray is followed to the light that refracts, realized retroreflective element along the opposite direction outgoing of incident direction of incident ray.

The cubic structure with a rectangular section can be but is not limited to a solid transparent structure;

and the three reflecting surfaces of the solid transparent structure can be coated with high-reflection layers for improving the reflection efficiency of light rays.

Example 14

The new line display device of this embodiment, on the basis of the above-mentioned embodiment of the present invention, a reflective layer is disposed between the reflective microstructure 3010 and the substrate 3011, and the reflective layer and the reflective microstructure 3010 are integrally formed or the reflective layer and the substrate 3011 are integrally formed or the reflective layer exists between the reflective microstructure 3010 and the substrate 3011 alone, and the reflective layer is used to efficiently reflect the light incident into the spherical structure; the reflecting layer can be a reflecting layer with high reflectivity, and the reflectivity of the reflecting layer is 50% -95%;

the reflection microstructure 3010 is of a spherical structure, the spherical structure is of a solid structure made of transparent materials, refer to fig. 16, fig. 16 is a schematic diagram of a light path of the spherical structure, incident light enters the retro-reflection element, and the spherical structure is of a solid structure, so that the incident light is refracted at a point P on the spherical structure to enter the spherical structure, and is reflected by a reflection layer between the spherical structure and the substrate, specifically, the reflection occurs at a point O at a focus, the reflected light is finally refracted out through a point Q on the spherical structure, and the refracted light is emitted in the opposite direction of the incident direction of the original incident light, so that the retro-reflection element emits light in the opposite direction of the incident light. Specifically, the focal point O is a point where the incident light is refracted and enters the spherical structure, and then is condensed and reflected at a smaller area, which is the point O.

Example 15

In the head-up display device of this embodiment, on the basis of the above embodiments of the present invention, the microstructures having spherical structures can be directly arranged on the substrate of the retroreflective element, the microstructure with the spherical structure is directly contacted with air, a protective film is not arranged above the microstructure, referring to fig. 16, incident light directly passes through the microstructure, P points on the microstructure with the spherical structure refract the incident light to enter the spherical structure, the light is reflected by a reflecting layer between the spherical structure and the base material, specifically, the light is reflected at a focus point O, the reflected light is finally refracted out through a point Q on the spherical structure, the refracted light is emitted along the direction opposite to the incident direction of the original incident light, the incident light is directly refracted and focused by the spherical microstructure and then reflected, the reflected light is emitted along the direction opposite to the incident light, the energy loss is minimum, and the light reflection intensity is highest.

In order to improve the reflection efficiency of light in this embodiment, a metal reflective layer may be coated on the outer surface of the microstructure of the spherical structure, and the metal reflective layer may reflect light incident into the spherical structure at the O point, and is highly effective.

Example 16

The new line display device of this embodiment on the basis of the above-mentioned embodiment of the utility model, the retroreflective element includes the substrate and distributes at a plurality of micro-structure on substrate surface, in this embodiment, this retroreflective element includes first substrate and the first layer that assembles, the first layer setting that assembles is on first substrate, wherein the first layer that assembles includes reflector layer and transparent material, transparent material sets up in the reflector layer top, above-mentioned a plurality of micro-structure just sets up inside transparent material, the setting is just utilizing the reflector layer to reflect incident light to the dispersion element of retroreflective element top along the opposite direction of incident direction at a plurality of inside globular micro-structures of transparent material.

Referring to fig. 17, in the present embodiment, the retroreflective element 6 is sequentially provided with a transparent material 600, a reflective layer 601 and a first base material from top to bottom along a light incidence direction, the first base material includes a backing paper 603 and a backing adhesive 602 disposed above the backing paper, the backing adhesive plays a mounting role, the upper surface of the backing adhesive 602 is attached to the reflective layer 601, a plurality of first microstructures 604 having a spherical structure are disposed inside the transparent material 600, the light can be incident to the reflective layer 601 through the first microstructures 604 after being incident to the first microstructures 604, and the incident light is reflected to the dispersive element by the first microstructures 604 along a direction opposite to the light incidence direction after being reflected to the first microstructures 604 by the reflective layer 601. The retroreflective element 6 in this embodiment may also be referred to as a buried retroreflective element.

The transparent material 600 may be a transparent resin material. The microstructures with the spherical structures are not consistent in size, the microstructures with the spherical structures are directly embedded into the transparent resin material, the sizes of the spherical structures are not completely consistent, the distances between the spherical structures and the reflective layer 601 are also not consistent, when light passes through the spherical structures, the focus of the spherical structures can not be guaranteed to just fall on the reflective layer behind, and at the moment, the reflected light can not return to the image source through the spherical structures again.

The spherical structure may be an elliptical spherical structure or a circular spherical structure.

Example 17

The head-up display device of this embodiment, on the basis of the above-mentioned embodiment of the present invention, the retroreflective element includes a substrate and a plurality of microstructures distributed on the surface of the substrate, in this embodiment, referring to fig. 18, the retroreflective element 7 includes a second substrate and a second convergence layer in this embodiment, the second convergence layer is disposed on the second substrate, wherein the second substrate includes a backing paper 702 and a backing adhesive 701 disposed on the backing paper 702, and the backing adhesive 701 is attached to the second convergence layer; the second converging layer comprises a fixed layer 700 and a second microstructure 705, the second microstructure 705 is arranged on the surface of the fixed layer 700, one side, away from the second microstructure 705, of the fixed layer 700 is attached to the back adhesive 701, the microstructure in the embodiment adopts a microstructure with a light reflecting surface, and the light reflecting surface can be a part of the surface, reflecting incident light, of the microstructure; the retroreflective element 7 in this embodiment may also be referred to as a sealed retroreflective element.

In this embodiment, to protect the microstructures disposed within the second concentrating layer, the retroreflective element further includes a transparent cover layer 706, the transparent cover layer 706 being disposed on the second concentrating layer; a first isolation layer 704 is formed in a gap between one side, away from the fixed layer 700, of the second microstructure 705 and the transparent cover plate layer 706, the refractive index of the first isolation layer 704 is smaller than that of the transparent cover plate layer, the fixed layer and the microstructure, and in order to enable the refractive index of the first isolation layer 704 to be smaller than that of the transparent cover plate layer, the fixed layer and the microstructure, no medium can be used in the first isolation layer, so that the first isolation layer 704 is an air layer; the first isolation layer can be filled with aerogel with a refractive index very close to that of air, and the purpose that the refractive index of the first isolation layer is smaller than that of the transparent cover plate layer, the fixing layer and the microstructure can also be achieved.

The second converging layer comprises a fixing layer 700 and second microstructures 705, the second microstructures 705 are arranged on the surface of the fixing layer 700, the fixing layer 700 is provided with a plurality of concave portions, each concave portion in the plurality of concave portions can be used for placing at least one second microstructure 705, in the fixing layer 700, in order to distinguish different concave portions, the concave portions can be spaced through convex portions 703, and the convex portions 703 are used for supporting the transparent cover plate 700.

In the embodiment, the microstructure adopts a microstructure with a light reflecting surface, and the light reflecting material can be directly coated on the spherical structure, so that the focus can be controlled to fall on the outer surface of the spherical structure, and all light rays refracted to the outer surface of the spherical structure from the spherical structure can be returned to the spherical structure. To achieve this, the refractive index is only guaranteed to be effective when light enters the spherical structure from the first spacer.

The fixing layer 700 may be made of resin, and the transparent cover plate layer 706 may be made of transparent resin.

The spherical structure may be an elliptical spherical structure or a circular spherical structure.

Example 18

The new line display device of this embodiment, on the basis of the above-mentioned embodiment of the utility model, wherein the surface of transflective device is free curved surface, the image source outgoing is used for forming the light of image, this light incides on the free curved surface of transflective device, free curved surface reflects the light of inciding to it on, reflected light incides to light controlling means, diffuse component will incide to on its light emittance retroreflective element, retroreflective element will incide to on its light reflects along the opposite direction of incident direction, light after the reflection reachs diffuse component again, diffuse component will incide to its light diffusion formation specific shape's light beam, the specific shape's of formation light beam reachs on the free curved surface of transflective device by the reflexion, finally form the virtual image.

Example 19

The new line display device of this embodiment, on the basis of the above-mentioned embodiment of the utility model, wherein the surface of transflective device is the plane, the image source outgoing is used for forming the light of image, on the plane of this light incidence transflective device, the plane reflects the light of inciding onto it, reflection light incides onto light controlling means, diffuse component will incide to on the light of it emits to the retroreflective element, retroreflective element reflects the light of inciding onto it along incident direction's opposite direction, diffuse component is reachd again to the light after the reflection, diffuse component will incide to the light diffusion of light diffusion formation specific shape on it, the light beam of the specific shape of formation is reachd the plane of transflective device and is re-reflected, finally form the virtual image.

Example 20

The new line display device of this embodiment on the basis of the utility model discloses on the vehicle that has windshield when using, refer to fig. 19, image source 1 adopts projection arrangement, and the windshield that passes through anti-device 2 and adopt the vehicle just is equipped with the anti-membrane that passes through on windshield, and the anti-membrane that passes through is used for improving the reflectivity and the transmissivity of light, wherein windshield among projection arrangement, the vehicle, the position relation between the light controlling means three is: the side of the projection device projecting light rays is opposite to the windshield of the vehicle, and the light ray control device is arranged below the windshield of the vehicle, such as the surface of a vehicle instrument desk; specifically, when the projection device is used in a vehicle with a windshield, the projection device is arranged at the top of the vehicle, one surface of the projection device emitting light rays is opposite to the front windshield of the vehicle, and the light ray control device is arranged below the transflective device.

The light control device 3 comprises a back reflection element 301 and a diffusion element 300, the diffusion element 300 is arranged above the back reflection element 301, light incident on the light control device 3 firstly reaches the diffusion element 300 and then passes through the diffusion element 300 and then reaches the back reflection element 301, the back reflection element 301 is used for reflecting the light incident on the back reflection element in the opposite direction of the incident direction, the diffusion element 300 is used for diffusing the light incident on the back reflection element, and the light is diffused by the diffusion element to form a beam of light with a specific shape (the diffused beam light is shown by a dotted line in the figure).

When the head-up display device works, the projection device emits light for forming an image, the light enters the windshield and is reflected by the windshield for the first time (the first reflection refers to the first reflection relative to the windshield), the reflected light reaches the light control device, the light reaching the light control device firstly reaches the dispersion element 300 and passes through the dispersion element 300 to be emitted to the retro-reflection element 301, the retro-reflection element 301 emits the light entering the retro-reflection element on the light control device along the opposite direction of the incident direction, the emitted light reaches the dispersion element 300 above again, the dispersion element 300 diffuses the light entering the retro-reflection element to form a light beam with a specific shape, the light beam with the specific shape reaches the windshield, the windshield reflects the light beam entering the windshield for the second time (the second reflection refers to the second reflection relative to the windshield), and a virtual image is formed, the reflected light rays are emitted to a preset area, and a driver can observe large-size image information in an eye box area in the driving process.

The projection device comprises a projection light source, an image generation unit and a lens part, wherein the projection light source emits light rays which are converted into image light rays by the image generation unit, the image light rays are emitted out through the lens part to form projection light rays, and the projection device comprises an LCD (liquid crystal display) projection device and a DLP (digital light processing) device; the projection light source emits light rays, and can be a gas discharge light source, including an ultrahigh pressure mercury lamp, a short arc xenon lamp and a metal halogen lamp; the projection Light source may also be an electroluminescent Light source, such as a Light Emitting Diode (LED) Light source; the projection light source can also be a laser light source; the image generating unit converts the light into image light, and may be a Liquid Crystal Display (LCD) or a Digital Micromirror Device (DMD). The lens part emits projection light, the image light passes through the lens part to form projection light, and the projection light is projected on a screen to form a real image. The lens portion includes a convex lens, or an equivalent lens group functioning similarly to the convex lens, such as a combination of a convex lens, a concave lens, and a fresnel lens. The projection device can be a wide-angle or ultra-wide-angle projection device, can project large-size pictures, and the head-up display device can display the large-size pictures by combining with a large-size light control device.

Example 21

The new line display device of this embodiment on the basis of the utility model discloses on the vehicle that has windshield when using, refer to 20, image source 1 adopts projection arrangement, and the windshield that passes through anti-device 2 adoption vehicle just is equipped with the anti-membrane that passes through on windshield, and the anti-membrane that passes through is used for improving the reflectivity and the transmissivity of light, wherein windshield among projection arrangement, the vehicle, the position relation between the light controlling means three is: the side of the projection device projecting light rays is opposite to the windshield of the vehicle, and the light ray control device is arranged below the windshield of the vehicle, such as the surface of an instrument desk of the vehicle; specifically, when the projection device is used in a vehicle with a windshield, the projection device is arranged at the top of the vehicle, one surface of the projection device emitting light rays is opposite to the front windshield of the vehicle, and the light ray control device is arranged below the transflective device.

The light control device 3 comprises a back reflection element 301 and a diffusion element 300, the diffusion element 300 is arranged above the back reflection element 301, light incident on the light control device 3 firstly reaches the diffusion element 300 and then passes through the diffusion element 300 and then reaches the back reflection element 301, the back reflection element 301 is used for reflecting the light incident on the back reflection element in the opposite direction of the incident direction, the diffusion element 300 is used for diffusing the light incident on the back reflection element, and the light is diffused by the diffusion element to form two beams of light beams with specific shapes (in the figure, the dotted lines represent the light beams of the two diffused light beams).

As shown in fig. 33, a multi-beam diffusion element is used, which is capable of diffusing light incident thereon into two light beams having a specific shape, and includes a light diffusion layer 3000 and a light orientation layer 3001, wherein the light orientation layer 3001 is configured to emit light in a plurality of different directions, and the light diffusion layer 3000 is configured to diffuse light in the plurality of different directions into a plurality of light beams;

firstly, light rays for forming images are emitted by a projection device, the light rays are reflected by a windshield after reaching the windshield, reflected light rays A reach a multi-beam diffusion element, the reflected light rays A passing through the multi-beam diffusion element are changed into light rays B which are more nearly vertical, the light rays B enter a retro-reflection element, the light rays A are emitted by the retro-reflection element along the opposite direction of the incident light rays (the incident light rays are the light rays B), emergent light rays C are still more nearly vertical, emergent light rays C enter from a light ray orientation layer and pass through a light ray orientation layer and a light ray diffusion layer, finally the light rays emitted from the multi-beam diffusion element are separated into two beams, the main optical axes of the two beams are respectively D and E, wherein the light with the main optical axis of D covers an eye box area after being reflected by the windshield, the light beam with the main optical axis of E covers the projection device after being reflected by, with particular reference to fig. 20, with the multi-beam diffusion element in the present embodiment, the multi-beam diffusion element may diffuse to form two beams, one of which may cover the eye box region after being reflected, and the other may cover the projection apparatus after being reflected; based on the above embodiment, when the multi-beam diffusion element is used, the position of the projection apparatus may be further defined, and the light beam with the main optical axis in the direction of E diffused by the multi-beam diffusion element is parallel to the direction of the reflected light ray a, and is reflected by the windshield, and the main optical axis of the reflected light ray is parallel to the light ray emitted by the projection apparatus. Compared with the embodiment of dispersing single light beams, when the multi-light-beam dispersing element is utilized, light cannot be emitted to the position between the projection device and the eye box area, the light effect can be further improved, and the full-vehicle-window HUD large-size imaging can be realized through the embodiment.

When the head-up display device works, the projection device emits light for forming an image, the light is incident on the windshield and is reflected by the windshield for the first time (the first reflection refers to the first reflection relative to the windshield), the reflected light reaches the light control device, the light reaching the light control device firstly reaches the diffusion element 300 and passes through the diffusion element 300 to be emitted to the retro-reflection element 301, the retro-reflection element 301 emits the light incident on the retro-reflection element in the opposite direction of the incident direction, the emitted light reaches the upper diffusion element 300 again, the diffusion element 300 diffuses the light incident on the retro-reflection element to form two light beams with specific shapes, the light beams with specific shapes reach the windshield, the windshield reflects the light beams incident on the windshield for the second time (the second reflection refers to the second reflection relative to the windshield), and a virtual image is formed, the reflected light rays are emitted to two areas, one of the two areas is a preset area, and a driver can observe large-size image information in the eye box area in the driving process. The device can realize high-efficient the utilization to projection light, can form big FOV's image outside windshield, just can form jumbo size, high definition, high bright portrayal under lower consumption, has greatly promoted HUD's use and has experienced.

The projection device comprises a projection light source, an image generation unit and a lens part, wherein the projection light source emits light rays which are converted into image light rays by the image generation unit, the image light rays are emitted out through the lens part to form projection light rays, and the projection device comprises an LCD (liquid crystal display) projection device and a DLP (digital light processing) device; the projection light source emits light rays, and can be a gas discharge light source, including an ultrahigh pressure mercury lamp, a short arc xenon lamp and a metal halogen lamp; the projection Light source may also be an electroluminescent Light source, such as a Light Emitting Diode (LED) Light source; the projection light source can also be a laser light source; the image generating unit converts the light into image light, and may be a Liquid Crystal Display (LCD) or a Digital Micromirror Device (DMD). The lens part emits projection light, the image light passes through the lens part to form projection light, and the projection light is projected on a screen to form a real image. The lens portion includes a convex lens, or an equivalent lens group functioning similarly to the convex lens, such as a combination of a convex lens, a concave lens, and a fresnel lens.

Example 22

The head-up display device of the present embodiment, on the basis of the above-mentioned embodiment of the present invention, referring to fig. 3, includes an image source 1, a transflective device 2 and a light control device 3, wherein the image source 1 is used for emitting light for forming an image; the transflective device 2 is used for reflecting light rays incident thereon and allowing the light rays incident thereon to be transmitted; referring to fig. 2, the light control device 3 includes a retro-reflective element 301 and a dispersing element 300, the dispersing element 300 is disposed above the retro-reflective element 301, light incident on the light control device 3 first reaches the dispersing element 300, then passes through the dispersing element 300, and then reaches the retro-reflective element 301, the retro-reflective element 301 is configured to reflect light incident thereon in a direction opposite to the incident direction, and the dispersing element 300 is configured to diffuse light incident thereon.

The retro-reflection element 301 uses a metamaterial to realize an opposite reflection function, after the metamaterial is introduced, an incident angle of light incidence is no longer equal to a reflection angle of the light reflected, but the propagation direction of the light can be controlled through the metamaterial, after the metamaterial is introduced, an extra phase difference can be introduced, and at the moment, the propagation direction of the light during reflection and refraction can be changed by changing the phase of the light.

The metamaterial has anisotropic characteristics, and can perform phase compensation on light rays, namely the reflection and refraction directions of the light rays are changed by changing the phase of the light rays incident to the metamaterial, so that the light ray convergence and opposite reflection functions are realized.

Referring to fig. 24, the retroreflective element 301 may be made of a metamaterial, and the retroreflective element 301 of the present embodiment includes: a light converging layer 800, a second isolation layer 801, a plane reflection layer 802, and a substrate 803 which are sequentially arranged in a light incident direction; the planar reflection layer 802 is located on the focal plane of the light converging layer 800, the light converging layer 800 and the planar reflection layer 802 are made of different metamaterials (different metamaterials refer to materials with different sizes, components, shapes or arrangement modes, and the size and the shape of the metamaterials are determined by the functions of the metamaterials), and the substrate 803 is used for supporting the light converging layer 800, the second isolation layer 801 and the planar reflection layer 802; the light ray in the back reflection element 301 made of metamaterial has the following functions: under the combined action of the light converging layer 800, the second isolation layer 801, the planar reflection layer 802 and the substrate 803, the phase cumulatively changes pi, and the retroreflection element made of the metamaterial has an opposite reflection effect on the light, so that the light can be reflected along the direction opposite to the incident direction of the light.

The light converging layer 800 may be made of a high refractive index material, and the planar reflective layer 802 may also be made of a high refractive index material (including but not limited to strontium titanate, chromium oxide, copper oxide, titanium dioxide (rutile type), titanium dioxide (anatase type), amorphous selenium, zinc oxide, gallium nitride, iodine crystal, amorphous silicon, and single crystal silicon). The light converging layer 800 converges the incident light onto the plane reflection layer 802 by changing the phase of the incident light, and transmits the light reflected by the plane reflection layer in the direction opposite to the direction in which the light is incident on the light converging layer. The light converging layer 800 functions like a convex lens, and may be regarded as a micro lens array formed by combining a plurality of micro convex lenses (the size of the micro convex lens is in the order of hundreds of nanometers), and the light can be converged on a plurality of adjacent points. The second isolation layer 801 is used to make the plane reflection layer 802 located on the focal plane of the light converging layer 800. The plane reflection layer 802 can change the phase of the light collected by the light collection layer, and reflect the light with changed phase to the light collection layer. The substrate 803 is used to form a resonant structure capable of changing the phase of incident light together with the light converging layer 800, the second isolation layer 801, and the planar reflection layer 802. The substrate 803 may be made of a polymer material.

In this embodiment, a first arrangement of the light converging layer 800 in the retroreflective element 301 is adopted, and as shown in fig. 25, when the light is a light of three primary colors, the light converging layer 800 includes: a first light converging cylinder, a second light converging cylinder and a third light converging cylinder, the length, width and height of which respectively correspond to the wavelength of the transmitted light; the first light converging cylinder, the second light converging cylinder and the third light converging cylinder are placed on the second isolation layer 801.

The first light converging cylinder converges the first color light in the three primary color light to the plane reflection layer by changing the phase of the first color light in the incident three primary color light, and transmits the first color light reflected by the plane reflection layer along the direction opposite to the direction of the first color light incident to the light converging layer. The second light converging cylinder converges the second color light in the three primary color light to the plane reflection layer by changing the phase of the second color light in the incident three primary color light, and transmits the second color light reflected by the plane reflection layer along the direction opposite to the direction of the incident light converging layer of the second color light. And the third light converging cylinder converges the third color light in the three primary color light to the plane reflection layer by changing the phase of the third color light in the incident three primary color light, and transmits the third color light reflected by the plane reflection layer along the direction opposite to the direction of the third color light incident to the light converging layer.

The three primary color light rays consist of red light rays, green light rays and blue light rays. The first color light, the second color light and the third color light can be any permutation and combination of red light, green light and blue light. And will not be described in detail herein. In order to improve the convergence efficiency of the first light convergence cylinder, the second light convergence cylinder and the third light convergence cylinder on the three primary color light and accumulate more geometric phases, the first light convergence cylinder, the second light convergence cylinder and the third light convergence cylinder may be arranged into a plurality of concentric rings.

The specific shapes of the first light converging cylinder, the second light converging cylinder and the third light converging cylinder may be as shown in fig. 25, and of course, other shapes capable of achieving the light converging function may also be adopted, which is not described herein again. The red light, the green light, and the blue light have different wavelength ranges, and in order to converge the three primary colors to the plane reflection layer, the length, width, and height of the first light converging cylinder, the second light converging cylinder, and the third light converging cylinder are required to correspond to the wavelength of the color light to be converged.

Optionally, the light converging layer 800 further includes a first substrate layer in order to separate the first light converging cylinder, the second light converging cylinder, and the third light converging cylinder by a certain distance and to support the first light converging cylinder, the second light converging cylinder, and the third light converging cylinder; the upper surface of first substrate layer can be fixed with first light and assemble the cylinder, the second light assembles the cylinder and the third light assembles arbitrary cylinder in the cylinder, and the lower surface of first substrate layer can laminate with second isolation layer 801.

In order to place the first light converging cylinder, the second light converging cylinder and the third light converging cylinder, the first substrate layer can be regarded as being composed of a plurality of adjacent substrate blocks, and any one of the first light converging cylinder, the second light converging cylinder and the third light converging cylinder can be placed on each substrate block in the first substrate layer; the structural period of the first substrate layer is related to the sizes of the first light converging cylinder, the second light converging cylinder and the third light converging cylinder which are arranged.

In addition, the substrate block is in the shape of a rectangular parallelepiped, the upper and lower surfaces of the substrate block may be square surfaces, and the side surface of the substrate layer is a rectangular surface.

The structural period of the first substrate layer is the side length of the upper surface and the lower surface of the substrate block, and the structural period determines the distance between adjacent ones of the first light converging cylinder, the second light converging cylinder and the third light converging cylinder arranged on the first substrate layer. This spacing affects the wavelength and phase modulation of the incident light.

The wavelength range of red light is: 622-760 nm; the wavelength range of green light is: 492-577 nm; the wavelength range of blue light is: 405-450 nm.

The sizes of the first light converging cylinder, the second light converging cylinder and the third light converging cylinder are in direct proportion to the wavelength of the three primary colors to be converged. Here, the dimensions refer to the length, width and height of the first light converging cylinder, the second light converging cylinder and the third light converging cylinder.

Specifically, when the wavelengths of the light beams of the three primary colors emitted by the light source are respectively: blue light 405 nanometers, green light 532 nanometers, and red light 660 nanometers. Here, a first light converging cylinder is set for converging 405 nm of blue light, a second light converging cylinder is set for converging 532 nm of green light, and a third light converging cylinder is set for converging 660 nm of red light.

In order to collect 405 nm of blue light, the dimensions of the first light collecting cylinder are: the height length is 600 nanometers, the width is 40 nanometers, the length is 150 nanometers, and the side length of the upper surface and the lower surface of the substrate block, in which the first light converging cylinder is arranged, in the first substrate layer is 200 nanometers.

In order to collect the green light of 532 nm, the size of the second light collecting cylinder is: the height length is 600 nanometers, the width is 95 nanometers, the length is 250 nanometers, and the side length of the upper surface and the lower surface of the substrate block, in which the second light converging cylinder is arranged, in the first substrate layer is 325 nanometers.

To collect 660 nm of red light, the dimensions of the third light collection cylinder are: the height length is 600 nanometers, the width is 85 nanometers, the length is 410 nanometers, and the side lengths of the upper surface and the lower surface of the substrate block, in which the third light converging cylinder is arranged, in the first substrate layer are 430 nanometers.

As can be seen from fig. 25, in the first arrangement of the light converging layer 800, in each of the plurality of concentric rings, the first light converging cylinder, the second light converging cylinder, and the third light converging cylinder are distributed in the circumferential direction. The first light converging cylinder, the second light converging cylinder, and the third light converging cylinder may be arranged in a circumferential direction in any arrangement that can occur to those skilled in the art.

Preferably, in the same ring, the first light converging cylinder, the second light converging cylinder and the third light converging cylinder may be uniformly arranged at intervals in the circumferential direction, and the arrangement ratio of the first light converging cylinder to the second light converging cylinder to the third light converging cylinder is 1:1: 1.

The distribution mode of the first light converging cylinder, the second light converging cylinder and the third light converging cylinder in the circumferential direction can be that the first light converging cylinder, the second light converging cylinder and the third light converging cylinder are distributed equidistantly or distributed at unequal distances.

The first light converging cylinder, the second light converging cylinder and the third light converging cylinder are preferably arranged at equal intervals, so that the phase modulation of the converged light by the distributed first light converging cylinder, second light converging cylinder and third light converging cylinder is accurate and smooth. However, the first light converging cylinder, the second light converging cylinder and the third light converging cylinder may be arranged at unequal intervals. The effect of the non-equidistant arrangement is that the phase modulation is not necessarily so precise and smooth, but also has a certain modulation effect and light converging function. The upper surface of the plane reflection layer 802 has a quasi-periodic structure, and the plane reflection layer reflects the light rays converged by the light ray convergence layer to the dispersion element along the opposite direction of the incident direction of the light rays through the quasi-periodic structure. The quasi-periodic structure is a short-range ordered periodic structure reduced from the original strictly periodic structure.

In the using process of the retro-reflecting element 301, each ring formed by the first light converging cylinder, the second light converging cylinder and the third light converging cylinder respectively rotates in sequence, the angle is gradually changed, and the purpose of changing the phase of the incident light is finally achieved. The phase change caused by each ring pair to incident light is between (0, 2 π), accumulating the phase, and eventually causing the phase pair to change to 2 π, or greater than 2 π.

Example 23

On the basis of the above embodiments of the present invention, referring to the schematic diagram of the second arrangement manner of the light converging layer 800 of the retro-reflective element shown in fig. 26, the light converging layer 800 includes: a fourth light converging cylinder having a length and a width respectively corresponding to the compensation phases of the transmitted light; the fourth light converging cylinder is arranged on the second isolation layer. And the fourth light converging cylinder converges the light with any wavelength to the plane reflecting layer by changing the phase of the incident light, and transmits the light reflected by the plane reflecting layer along the direction opposite to the direction of the light converging layer. Preferably, the fourth light converging cylinder in the light converging layer 800 is a rectangular cylinder. In one embodiment, the light converging layer 800 may be made of GaN material.

In order to converge light rays with different wavelengths, the corresponding relationship between the length and width of the fourth light converging cylinder and the phase compensated for the incident light rays is shown in table 1.

TABLE 1

Wherein LP denotes a length of the fourth light converging cylinder, and WP denotes a width of the fourth light converging cylinder.

In order to improve the light converging efficiency of the fourth light converging cylinders, the fourth light converging cylinders are arranged into a plurality of concentric rings. As can be seen from fig. 26, in the second arrangement of the light converging layer 800, each of a plurality of concentric rings formed by arranging a plurality of fourth light converging cylinders is distributed in the circumferential direction.

The distribution mode of the fourth light converging cylinder in the circumferential direction is similar to the distribution mode of the first light converging cylinder, the second light converging cylinder and the third light converging cylinder in the circumferential direction, and the description is omitted here.

The upper surface of the plane reflection layer 802 has a quasi-periodic structure, and the plane reflection layer reflects the light rays converged by the light ray convergence layer to the dispersion element along the opposite direction of the incident direction of the light rays through the quasi-periodic structure.

In a second arrangement of the light converging layer 800, the light converging layer 800 further comprises: a second substrate layer; the fourth light converging cylinder is placed on the upper surface of the second substrate layer, and the lower surface of the second substrate layer is attached to the second isolation layer; the fourth light converging cylinder with different length and width can converge the light with different wavelength. Therefore, after the fourth light converging cylinders with different lengths and widths are placed on the second substrate layer to be combined, light with any wavelength can be converged.

In the second arrangement of the light converging layer 800, the substrate layer can also be considered as being composed of a plurality of adjacent substrate blocks. The shape of the backing block is similar to that described in the first arrangement of the light converging layer 800.

For the second arrangement of the light converging layer 800, the size of the structural period of the second substrate layer also determines the distance between the adjacent fourth light converging cylinders. This spacing affects the wavelength and phase modulation of the incident light.

As can be seen from the above description, the fourth light converging cylinder can converge the full-band light. The structure period of the second substrate layer is therefore fixed, for example: and may be any value between 100 nm and 150 nm. Preferably, the side lengths of the upper and lower surfaces of the substrate block on which the fourth light converging cylinder is disposed may be 120 nm.

In the above implementation, the length, width and height of the quasi-periodic structure on the upper surface of the planar reflective layer 802 are both smaller than the wavelength of the incident light.

Example 24

On the basis of the above embodiments of the present invention, referring to the structural plan view of the third arrangement mode of the light convergence layer 800 of the retro-reflecting element 301 shown in fig. 27 and the structural side view of the third arrangement mode of the light convergence layer 800 of the retro-reflecting element 301 shown in fig. 28, the light convergence layer 800 includes: a fifth light converging cylinder 8000 and a first material layer 8001. The first material layer 8001 is disposed on the second isolation layer 801, and the fifth light converging cylinder 8000 is disposed in the first material layer 8001. The adjacent fifth light converging cylinders 8000 are silicon cylinders with different diameters; the diameter of the fifth light converging cylinder is smaller than the wavelength of any light in the visible light. In order to achieve a better light converging effect, the adjacent fifth light converging cylinders 8000 are arranged at equal intervals. The distance between the adjacent fifth light converging cylinders 8000 is between 300 nanometers and 600 nanometers. Here, the adjacent fifth light converging cylinders 8000 are equidistantly arranged, which means that the distance between the centers of any two adjacent fifth light converging cylinders 8000 is equal. The fifth light converging cylinder 8000 converges the incident multiple paths of light onto the plane reflection layer by changing the phase of the incident light, and transmits the light reflected by the plane reflection layer in the direction opposite to the direction in which the light is incident on the light converging layer. When the light converging layer of the retroreflective element is designed, in order to arrange the adjacent fifth light converging cylinders 8000 at equal intervals, the fifth light converging cylinders 8000 may be placed in the light converging units 8002 arranged in a honeycomb shape. In order to prevent gaps from appearing between the light converging units 8002 and affect the performance of the light converging element, referring to a structural top view of the light converging layer of the retro-reflective element shown in fig. 27 and a structural side view of the light converging layer of the retro-reflective element shown in fig. 28, in one embodiment, the light converging units 8002 may be hexagonal, and the cross section of the light converging units 8002 is hexagonal.

The fifth light converging cylinder 8000 may be made of amorphous silicon.

In the third arrangement mode of the light converging layer 800, the phase of the incident light can be modulated within the range of 0 to 2 pi by controlling the diameter of the fifth light converging cylinder 8000, for example, by arranging the fifth light converging cylinder 8000 in a quasi-linear manner between 60 nm and 300 nm. See fig. 29 for a schematic diagram of a fifth light converging cylinder with a quasi-linear arrangement of diameters. In fig. 29, the horizontal axis represents the diameter length of the fifth light converging cylinder 8000, and the vertical axis represents the light transmittance. As can be seen from fig. 29, the fifth light converging cylinder 8000 has a poor transmittance for light at diameters of 225 nm and 260 nm, and the fifth light converging cylinder 8000 may realize a light converging function without using diameters of 225 nm and 260 nm.

Wherein, | t |2 represents the transmittance of the fifth light converging cylinder for light; and the angle t/2 pi represents the change degree of the fifth light ray convergence column to the phase of the transmitted light ray.

The refractive index of the fifth light converging cylinder 8000 is much higher than that of the first material layer 8001.

Referring to the top view of the structure of the planar reflective layer corresponding to the light converging layer of the retroreflective element 301 shown in fig. 30 and the side view of the structure of the planar reflective layer corresponding to the light converging layer of the retroreflective element 301 shown in fig. 31, the planar reflective layer includes: a light reflecting cylinder 9000 and a second material layer 9001.

As can be seen from fig. 30 and 31, in the plane reflection unit 9002, the light reflection cylinder 9000 and the fifth light convergence cylinder 8000 have the same diameter range but are arranged in a different manner as compared with the fifth light convergence cylinder 8000 of the light convergence unit 8002 of fig. 27 and 28.

The light reflecting columns 9000 may be arranged in a quasi-linear manner, and the specific arrangement is as shown in fig. 32. In fig. 32, the horizontal axis represents the diameter length of the light reflecting cylinder 9000, and the vertical axis represents the light reflectance.

Wherein | r | R |²Representing the reflectivity of the light reflecting cylinder to the light; the angle r/2 pi represents the degree of change of the phase of the reflected light by the light reflection column.

The above-described second material layer 9001 is provided between the second separation layer 801 and the substrate 803; a light reflecting cylinder 9000 is disposed within the second material layer 9001. Adjacent light reflecting cylinders 9000 are cylinders having different diameters; and the light reflecting column body can respectively change the phase of the light when the light enters the light reflecting column body and reflects the light back to the light converging layer, wherein the incident light is transmitted in the light reflecting column body and then reflected back to the light converging layer by the light reflecting column body.

The plane reflection unit composed of the light reflection cylinder may be made of a high refractive index material.

In order to achieve a better light reflection effect, the adjacent fifth light converging cylinders 8000 are arranged at equal intervals. The distance between the adjacent fifth light converging cylinders 8000 is between 300 nanometers and 600 nanometers. Here, the adjacent light reflecting cylinders 9000 are arranged at equal intervals, which means that the distance between the centers of any two adjacent light reflecting cylinders 9000 is equal.

In designing the plane reflection layer of the retroreflective element 301, different light reflecting cylinders 9000 may be disposed in each plane reflection unit 9002 arranged in a honeycomb shape in order to arrange adjacent light reflecting cylinders 9000 at equal intervals. In order not to cause a gap between the planar reflection units 9002 and affect the performance of the light converging element, referring to a structural top view of the planar reflection layer of the retroreflective element 301 shown in fig. 30 and a structural side view of the planar reflection layer corresponding to the light converging layer of the retroreflective element 301 shown in fig. 31, the planar reflection units 9002 may take a hexagonal body shape, and the cross section of the planar reflection unit 9002 is hexagonal.

In a third arrangement of the light converging layer, the substrate 803 may be regarded as being composed of a plurality of substrate blocks shaped as a hexagonal body in order to place the planar reflecting units 9002. One planar reflection unit 9002 may be disposed on each substrate block. The size of the structural period of the substrate determines the distance between the light reflecting cylinders 9000 of each adjacent planar reflecting unit 9002. This spacing affects the wavelength and phase control of the reflected light by the light reflecting cylinders 9000.

In a third arrangement of the line convergence layer, the structural period of the substrate is the side length of each hexagonal body as a substrate block.

In addition, the size of the structural period of the substrate 803 on which the second material layer 9001 is disposed is 450 nm, when the diameters of the light reflecting cylinder 9000 and the fifth light converging cylinder 8000 vary between 0nm and 300 nm, the phase variation amount is 0 to 2 pi, and the diameters of the light reflecting cylinder 9000 and the fifth light converging cylinder 8000 and the phase variation amount have a quasi-linear relationship, as shown in fig. 29 and 32, respectively.

The first material layer 8001 and the second material layer 9001 may be made of a polymer material such as SU-8. Structural formula of polymeric material SU-8: wherein, the molecular formula of SU-8 is as follows: c₈₇H₇₀O₁₆. The refractive index of SU-8 is 1.57, and materials with a refractive index close to that of SU-8 include, but are not limited to: styrene-acrylonitrile copolymer (Styrene/acrylonitrile copolymer), Poly (phenyl methacrylate), Poly (o-cresyl methacrylate), Poly (diallyl phthalate), Poly (ethylene terephthalate), Poly (vinyl butyral), Poly (m-nitrobenzyl methacrylate), Poly (Polycarbonate), Bisphenol a Polycarbonate (Bisphenol-a Polycarbonate), Poly (o-methyl Styrene), and Polystyrene (Polystyrene).

These materials can be used to form the first material layer 8001 and the second material layer 9001.

In the implementation of the retroreflective element, a metal film or a semiconductor material is used for the substrate 803 in order to provide a certain light reflection function.

Thus, when some light is incident on the substrate 803 through the plane reflection unit 9002, the substrate reflects the light passing through the plane reflection layer back to the plane reflection layer. So that light passing through the plane reflective layer is reflected back to the position of the plane reflective layer and passes through the plane reflective layer again. Therefore, the planar reflecting layer can perform accumulated modulation on the phase of more incident light rays and achieve the effect of counter reflection.

Here, the structures of the planar reflective layers used in the first and second arrangements of the light converging layer 800 of the retro-reflective element 301 are similar to those of the planar reflective layers shown in fig. 31 and 32, and are not described again here.

Example 25

The new line display device of this embodiment on the basis of the above-mentioned embodiment of the utility model, when reflection micro-structure 3010 adopts the spatial structure who comprises two liang mutually perpendicular spatial structure of three face and this spatial structure for the solid structure who forms by the transparent material preparation in the retroreflective element 301, or when reflection micro-structure 3010 is globular micro-structure and this globular micro-structure is the solid structure who forms by the transparent material preparation in the retroreflective element 301, need do corresponding design to this retroreflective element 301.

Specifically, referring to fig. 34, the retroreflective element 301 includes a substrate 3011 and a plurality of reflective microstructures 3010 distributed on the surface of the substrate 3011, the plurality of reflective microstructures 3010 are uniformly distributed on the surface of the substrate 3011, and the reflective microstructures 3010 can reflect light incident thereon in a direction opposite to the incident direction; a concave portion is formed between the plurality of reflective microstructures 3010, a filler 3012 is disposed in the concave portion, and when the retroreflective element 301 with the filler 3012 is connected to an external element, the reflective microstructures 3010 in the retroreflective element 301 are not damaged by extrusion, so that the retroreflective element with reflective microstructures has expandability in application.

The reflective microstructure 3010 itself has a reflective surface, which makes the reflective microstructure 3010 reflect the light incident thereon in the opposite direction of the incident direction; referring to fig. 35, in the present embodiment, a reflective layer 3013 is disposed on the reflective surface of the reflective microstructure 3010, the reflective layer 3013 is disposed between the reflective microstructure 3010 and the filler 3012, the reflective layer 3013 has a high reflectivity to light, and when light is incident on the retroreflective element 301, the light reaches the reflective layer 3013 and is efficiently reflected, so that the retroreflective element 301 has a high reflectivity to light.

Specifically, the reflective layer 3013 on the reflective surface of the reflective microstructure 3010 has a high reflectivity to light, and the reflectivity of the reflective layer 3013 to light can reach 60%, 70%, 80% or more than 90%;

further, the reflectivity of the reflective layer 3013 to light can reach even 95%.

Example 26

On the basis of the above embodiments of the present invention, referring to fig. 35, a reflective layer 3013 is disposed on the reflective surface of the reflective microstructure 3010, the reflective layer 3013 is located between the reflective microstructure 3010 and the filler 3012, the reflective layer 3013 has a higher reflectivity to the light, and when the light is incident to the retroreflective element 301, the light is efficiently reflected after reaching the reflective layer 3013, so that the retroreflective element 301 has a higher reflectivity to the light.

The specific implementation manner of the reflective layer 3013 of this embodiment is:

the reflective layer 3013 is formed by stacking film layers, each film layer has refractive index properties, the reflective layer 3013 at least includes a part of stacked film layers, the refractive index between adjacent film layers in the part of stacked film layers is in high-low distribution, the part of stacked film layers at least includes a pair of adjacent film layers with high-low distribution of refractive index;

referring to fig. 36, specifically: the reflective layer 3013 is formed by stacking layers, and all the stacked layers sequentially include a first layer m along the incident direction of light₁A second film layer m₂A third film layer m₃A fourth film layer m₄… … film n-1 m_n-1And the n film layer m_nWherein the reflective layer 3013 comprises at least a part of the stacked film layers, and the part of the stacked film layers is only a part of all the stacked film layersThe refractive index between adjacent film layers in the partially stacked film layers is distributed in a high-low mode, and the partially stacked film layers at least comprise a pair of adjacent film layers with the refractive index distributed in a high-low mode. Therefore, in the n stacked film layers, there is a refractive index profile between adjacent film layers of a part of the stacked film layers, the part of the stacked film layers may include 5 pairs of adjacent film layers with a high and low refractive index profile (the adjacent film layers with a high and low refractive index profile in the part of the stacked film layers may be, but are not limited to, 5 pairs), and the 5 pairs of adjacent film layers with a high and low refractive index profile may be: n-10 th film layer m_n-10To the n-1 th film layer m_n-1Wherein the n-10 th film layer m_n-10Is higher than the n-9 film layer m_n-9Refractive index of (n-8) th film layer m_n-8Is higher than the n-7 film layer m_n-7Refractive index of (n-6) th film layer m_n-6Is higher than the n-5 film layer m_n-5Refractive index of (n-4) th film layer m_n-4Is higher than the n-3 film layer m_n-3Refractive index of (n-2) th film layer m_n-2Is higher than the n-1 film layer m_n-1The refractive index of (the position of the portion of the stacked film layer in all of the stacked film layers may be, but is not limited to). In practice, the more the number of pairs of adjacent layers in the partially stacked layers, the higher the reflectivity of the final reflective layer 3013 and thus the optical element to light. The number of pairs of adjacent film layers having a high and low refractive index distribution in the partially stacked film layers may be, but is not limited to, 50 pairs; the logarithm range of adjacent film layers with high and low refractive indexes in the partial stacked film layers can be 5-100 pairs; when the number of pairs of adjacent film layers with high and low refractive indexes of the partially stacked film layers is between 20 and 30 pairs, the reflection efficiency of the reflection layer to light is extremely high, so that the reflection efficiency of the optical element to light is extremely high.

The reflective layer 3013 is formed by stacking film layers, and the refractive index of the film layers is not less than 2. When the refractive index of the reflective layer 3013 includes 2, the n-10 th film layer m_n-10Refractive index of (n-8) th film layer m_n-8Refractive index of (n-6) th film layer m_n-6Refractive index of (n-4) th film layer m_n-4Refractive index of (n-2) th film layer m_n-2All the refractive indexes of (a) and (b) are the same;n-9 th film layer m_n-9Refractive index of (n-7) th film layer m_n-7Refractive index of (n-5) th film layer m_n-5Refractive index of (n-3) th film layer m_n-3N-1 film layer m_n-1Are all the same.

When the refractive index is more than 2 in the reflective layer 3013, as long as the above is satisfied: n-10 th film layer m_n-10To the n-1 th film layer m_n-1Wherein the n-10 th film layer m_n-10Is higher than the n-9 film layer m_n-9Refractive index of (n-8) th film layer m_n-8Is higher than the n-7 film layer m_n-7Refractive index of (n-6) th film layer m_n-6Is higher than the n-5 film layer m_n-5Refractive index of (n-4) th film layer m_n-4Is higher than the n-3 film layer m_n-3Refractive index of (n-2) th film layer m_n-2Is higher than the n-1 film layer m_n-1The refractive index of (1) n-10 th film layer m_n-10Refractive index of (n-8) th film layer m_n-8Refractive index of (n-6) th film layer m_n-6Refractive index of (n-4) th film layer m_n-4Refractive index of (n-2) th film layer m_n-2May have different refractive indices, the n-9 th film layer m_n-9Refractive index of (n-7) th film layer m_n-7Refractive index of (n-5) th film layer m_n-5Refractive index of (n-3) th film layer m_n-3N-1 film layer m_n-1May be different.

The thickness range of the film layer is 50-190 nm, and the thickness of the film layer is not limited in the range.

The reflective microstructures 3010 are made of transparent materials, and the refractive indexes of the transparent materials are all greater than 1, that is, the refractive index of the reflective microstructures 3010 is greater than 1.

In this embodiment, the reflective layer 3013 is connected to the reflective surface of the reflective microstructure 3010 in a plated film manner. The film layers in the reflective layer 3013 are stacked and connected by means of pasting, evaporation, electroplating, sputtering or deposition.

In this embodiment, the reflective layer 3013 is formed by stacking film layers with different refractive indexes, and the refractive indexes between adjacent film layers are arranged in a high-low manner. The film layer with high and low refractive index can be made of the following materials:

the film layer having a high refractive index may be, but is not limited to: a strontium titanate film layer, a chromium oxide film layer, a copper oxide film layer, a titanium dioxide (rutile type) film layer, a titanium dioxide (anatase type) film layer, an amorphous selenium film layer, a zinc oxide film layer, a gallium nitride film layer, an iodine crystal film layer, an amorphous silicon film layer, a monocrystalline silicon film layer, a trititanium pentoxide film layer, a zirconium dioxide film layer, a tantalum pentoxide film layer and a niobium pentoxide film layer.

The film layer having a low refractive index may be, but is not limited to: a silicon dioxide film layer and a magnesium fluoride film layer.

Through the high-refractive-index film layer and the low-refractive-index film layer of the embodiment, the high reflectivity of the reflecting layer to light can be realized, and the high reflectivity of the back reflecting element to light is realized.

Example 27

The new line display device of this embodiment on the basis of the above-mentioned embodiment of the present invention, the refractive index all is height distribution between all adjacent rete in the reflection stratum 3010, 1 st rete m promptly₁Is higher than the 2 nd film layer m₂Refractive index of (3) film layer m₃Is higher than the refractive index m of the 4 th film layer₄Refractive index of (5) film layer m₅Is higher than the 6 th film layer m₆And so on, the n-1 film layer m_n-1Is higher than the n film layer m_nIs used as a refractive index of (1).

The refractive index of all adjacent layers in the reflective layer 3013 is distributed in high and low directions, and in this embodiment, the reflective layer 3013 includes two refractive indexes, one of the refractive indexes is higher than the other refractive index. I.e. the 1 st film layer m₁Refractive index of (3) film layer m₃Refractive index of (5) film layer m₅… are the same, the 2 nd film layer m₂Refractive index of (4) film layer m₄Refractive index of (1), film layer (6) m₆… are the same, wherein the 1 st film layer m₁Is higher than the 2 nd film layer m₂Is used as a refractive index of (1). That is, the reflective layer 3013 is formed by repeatedly stacking two film layers having different refractive indexes in order of high refractive index and low refractive index. The reflective layer 3013 of this embodiment is very reflective to light, and thus retroreflective elements301 are highly reflective of light.

The number of the film layers is not less than 2, and accordingly, if the number of the film layers is larger, the reflectivity of the reflecting layer 3013 is higher, so that the reflectivity of the retro-reflecting element is higher, and the reflectivity of the retro-reflecting element to light is higher.

Example 28

The new line display device of this embodiment on the basis of the above-mentioned embodiment of the utility model, locate reflection stratum 3013 on reflection micro-structure 3010's the plane of reflection can be the metal reflection stratum, and this metal reflection stratum is higher to the reflection efficiency of light, and this metal reflection stratum can adopt aluminium metal reflection stratum or silver metal reflection stratum or other, and this metal reflection stratum accessible is but not limited to cladding material mode and is connected with reflection micro-structure 3010's plane of reflection.

Example 29

The new line display device of this embodiment on the basis of the above-mentioned embodiment of the utility model, locate reflection stratum 3013 on reflection micro-structure 3010's the plane of reflection and can design into the low numerical value that just hangs down of the refractive index of reflection micro-structure 3010 itself and be not less than 0.15, the refractive index of this reflection stratum 3013 is than the low numerical value that just hangs down of the refractive index of reflection micro-structure 3010 itself and be not less than 0.15, reflection micro-structure 3010 adopts transparent material to make and forms, and this transparent material's refractive index is greater than 1, then reflection micro-structure 3010's refractive index is greater than 1 for reflection stratum 3013 is higher to the reflection efficiency of the reflection component 301 of light.

In this embodiment, since the refractive index of the reflective layer 3013 is lower than that of the reflective microstructure 3010, when light enters from one side of the reflective microstructure 3010, the light is emitted from the optically dense medium to the optically sparse medium, and part of the light incident thereon can be totally reflected, thereby further improving the reflection efficiency.

Specifically, the reflecting microstructure is made of a transparent material, the transparent material can be a high-molecular transparent material, glass or other materials, and the refractive index of the transparent material is greater than 1; accordingly, the reflective layer 3013 disposed on the reflective surface of the reflective microstructure can be made of the materials listed in table 1, and the reflective layer disposed on the reflective surface of the reflective microstructure can be made of the materials listed in table 2, provided that the refractive index is lower than that of the reflective microstructure 3010 itself and is not less than 0.15.

TABLE 2

Example 30

The new line display device of this embodiment on the basis of the above-mentioned embodiment of the present invention, is equipped with filler 3013 between reflective microstructure 3010 and substrate 3011, and above-mentioned filler 3013 plays the support guard action for retroreflective element itself is not destroyed by the extrusion. The filler 3013 is made of a transparent medium, and specifically, the filler 3013 is made of the following materials: rubber fillers, plastic fillers, polymeric fillers, or others.

Example 31

The new line display device of this embodiment on the basis of the above-mentioned embodiment of the utility model, when reflection micro-structure 3010 adopts the spatial structure who comprises two liang mutually perpendicular spatial structure of three face and this spatial structure is the solid construction that forms by the transparent material preparation in retroreflective element 301, this reflection micro-structure 3010 can be but not limited to the spatial structure who comprises two liang mutually perpendicular of three face, wherein three face is the plane of reflection, and the spatial structure who comprises two liang mutually perpendicular of three face is the solid construction that forms by the transparent material preparation.

The three surfaces perpendicular to each other in pairs may include, but are not limited to, a triangular pyramid structure with a regular triangle cross section, a triangular pyramid structure with an isosceles triangle cross section, or a cubic structure with a rectangular cross section.

Referring to fig. 12, in fig. 12, when an incident light beam is incident to the retroreflective element, the incident light beam is refracted to enter the triangular pyramid structure with the regular triangle cross section, and three times of reflection occur on the reflective surface inside the triangular pyramid structure with the regular triangle cross section, and then the incident light beam is refracted out of the triangular pyramid structure, and the refracted light beam is along the opposite direction of the incident light beam.

Referring to fig. 23, in fig. 23, when an incident light beam enters the retro-reflection element, the incident light beam is refracted into the isosceles triangle pyramid structure, three reflections occur on the reflection surface inside the isosceles triangle pyramid structure, and then the incident light beam is refracted out of the isosceles triangle pyramid structure, and the refracted light beam is along the opposite direction of the incident light beam.

Referring to fig. 15, when an incident light ray is incident to the retroreflective element in fig. 15, the incident light ray is refracted into the rectangular-cross-sectional cubic structure, three reflections occur on the reflective surfaces inside the rectangular-cross-sectional cubic structure, and then the rectangular-cross-sectional cubic structure is refracted, with the refracted light ray being in the opposite direction to the incident light ray.

Example 32

The new line display device of this embodiment on the basis of the above-mentioned embodiment of the present invention, when the reflection microstructure 3010 adopts the spherical microstructure in the retro-reflection element 301 and this spherical microstructure is the solid structure that is made by transparent material and forms, this spherical microstructure itself has the reflection stratum, and the reflectivity of this reflection stratum can reach 95%. Referring to fig. 16, when light enters the retro-reflection element, the light is refracted at a point P on the spherical microstructure and enters the spherical microstructure, and is reflected at a point O inside the spherical microstructure, the reflected light reaches a point Q on the spherical microstructure, and is refracted again, and the refracted light is in the opposite direction of the incident light.

Example 33

In the head-up display device according to the above embodiments of the present invention, in practical applications, the retro-reflective element is disposed on the external supporting element, specifically, the filler is disposed on the external supporting element 3014, as shown in fig. 37, and the retro-reflection occurs when the light is incident on the retro-reflective element. It should be understood that, because the substrate 3011 and the reflective microstructures 3010 distributed on the surface of the substrate 3011 have refractive indexes greater than 1, light rays should be refracted into and out of the substrate 3011 with the reflective microstructures, for convenience of illustration, the refraction process is not shown in the drawing, and only the process that the light rays are reflected once or multiple times on the reflective microstructures 3010 and the reflected light rays are emitted in the opposite direction of the incident light rays is schematically given.

Example 34

The embodiment provides a motor vehicle, which comprises the head-up display device in any one of the above embodiments. The motor vehicle provided by the embodiment adopts the head-up display device, so that a driver can directly see more abundant information such as large-size pictures of a navigation map, complex safety information and the like without looking down at an instrument panel in the driving process, and the requirement of the driver for controlling various information in the driving process of the vehicle can be better met.

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 (17)

1. A heads-up display device comprising an image source, a transflector means and a light control means, wherein:

an image source that emits light for forming an image;

a transflective device that reflects light incident thereon and allows the light to transmit;

a light control device comprising a retro-reflective element and a diffusive element; the retro-reflecting element reflects the light incident thereon in the direction opposite to the incident direction; the diffusion element diffuses light incident on the diffusion element;

the image source firstly emits light for forming an image, the light enters the transflective device, the incident light is reflected once by the transflective device, the reflected light enters the light control device, the light firstly passes through the dispersing element and then exits to the retro-reflecting element, the retro-reflecting element emits the incident light in the opposite direction of the incident direction, the emergent light passes through the dispersing element, the dispersing element diffuses the incident light, the diffused light enters the transflective device, and the transflective device reflects the incident light twice to form a virtual image.

2. The head-up display device of claim 1, wherein the diffusing element is a device that diffuses incident light to form a beam of light of a specific shape.

3. The heads-up display device of claim 2 wherein the diffusing element diffuses incident light to form one or more shaped beams.

4. The heads-up display device of claim 3 wherein the cross-sectional shape of the light beam includes at least one of a line, a circle, an ellipse, a square, and a rectangle.

5. The device of claim 1, wherein the retroreflective element comprises a substrate and a plurality of microstructures distributed over a surface of the substrate.

6. The device of claim 5, wherein a reflective layer is disposed between the substrate and the microstructures.

7. The head-up display device according to claim 6, wherein the reflective layer has a reflectivity of 50% to 95%.

8. The device of claim 6, wherein the microstructure is a spatial structure formed by three planes perpendicular to each other two by two, and the three planes are reflective planes.

9. The head-up display device according to claim 8, wherein the space structure is a hollow concave structure or a solid structure made of a transparent material.

10. The device of claim 9, wherein the microstructures are triangular pyramid structures formed by three triangles perpendicular to each other two by two or cubic structures formed by three rectangles perpendicular to each other two by two.

11. The head-up display device according to claim 10, wherein a reflective layer is provided on at least one of the reflective surfaces, and the reflective layer has a reflectivity of 50% to 95%.

12. The device of claim 6, wherein the microstructures are spherical.

13. The heads-up display device of claim 12 wherein the spherical structure is a solid structure made of a transparent material.

14. The heads-up display device of claim 1 wherein the transflector surface is free-form or planar.

15. The head-up display device of claim 1, wherein the image source is a projection device, the transflective device is a windshield of a vehicle, the projection device emits light to the windshield of the vehicle, and the light control device is disposed below the windshield of the vehicle.

16. The heads-up display device of claim 15 wherein the projection device includes a lens portion.

17. A motor vehicle comprising a heads-up display device according to any one of claims 1 to 16.

Images