CN213399047U - Head-up display device and motor vehicle - Google Patents

Abstract

The utility model relates to a show technical field, disclose a new line display equipment and motor vehicle, include: a housing; a first image source and an optical assembly disposed within the housing; the optical assembly comprises a reflection structure and a transflective mirror, a first image source is arranged on one side of the transflective mirror far away from the light outlet, the reflection structure is arranged on one side of the transflective mirror close to the light outlet, the first image source is used for emitting first imaging light, the transflective mirror allows light to be reflected and allows light to be transmitted, the first imaging light emitted by the first image source is emitted to the transflective mirror, the light transmitted by the transflective mirror is emitted to the reflection structure to be reflected, the light reflected by the reflection structure is emitted to the transflective mirror, and the light reflected by the transflective mirror is emitted through the light outlet so that the light emitted through the light outlet is imaged through external projection equipment. The utility model discloses embodiment provides a new line display equipment and motor vehicle has the advantage of dwindling new line display equipment's volume.

Description

Head-up display device and motor vehicle

Technical Field

The utility model relates to a show technical field, in particular to new line display equipment and motor vehicle.

Background

At present, a Head Up Display (HUD) may project driving information onto a windshield of a vehicle, so that a driver may view the driving information of the vehicle without looking down at an instrument panel during driving. The image area that HUD projected shows on the surface of driver place one side in windshield, makes things convenient for the driver to look over driving information driving the in-process.

However, the inventor of the present invention has found that there is a certain requirement for the optical path of the light before the light is transmitted to the projection device in order to project the display screen to a farther position, and in the prior art, the HUD generally needs to be made large for a longer optical path, however, the internal space of the console of the automobile is limited, which greatly limits the installation and use of the HUD.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a new line display equipment and motor vehicle when guaranteeing the formation of image light optical path, reduces new line display equipment's volume.

In order to solve the above technical problem, an embodiment of the present invention provides a head up display device, including: a housing; a first image source and an optical assembly disposed within the housing; the optical assembly comprises a reflection structure and a transflective mirror, the reflection structure is a curved surface reflection structure, a first image source is arranged on one side, far away from the light outlet, of the transflective mirror, the reflection structure is arranged on one side, close to the light outlet, of the transflective mirror, the first image source is used for emitting first imaging light, the transflective mirror allows light to be reflected and allows light to be transmitted, the first imaging light emitted by the first image source is emitted to the transflective mirror, the light transmitted by the transflective mirror is emitted to the reflection structure to be reflected, the light reflected by the reflection structure is emitted to the transflective mirror, and the light reflected by the transflective mirror is emitted through the light outlet so that the light emitted through the light outlet is imaged through external projection equipment.

The utility model discloses an embodiment still provides a motor vehicle, include: the head-up display device is used for transmitting the first imaging light to the projection device along a first light path for imaging.

Compared with the prior art, the embodiment of the utility model has the advantages that the first image source is arranged at one side of the reflecting mirror far away from the light outlet, and the first imaging light emitted by the first image source can be transmitted through the reflecting mirror and then reflected to the light outlet through the reflecting structure and the reflecting mirror again to be emitted, so that the optical path of the imaging light is ensured; in addition, the image source is arranged on one side of the transflective mirror, which is far away from the light outlet, so that the space between the image source and the light outlet can be better utilized under the condition of certain required optical path, the space utilization rate is improved, and the volume of the head-up display equipment is reduced. In addition, the reflecting structure is arranged to be a curved surface reflecting structure, so that the image can be effectively amplified and the imaging distance can be increased.

In addition, still include: the second image source is used for emitting second imaging light rays and is positioned on one side of the reflecting mirror, which is close to the light outlet; the second imaging light rays are emitted to the reflecting mirror, the light rays reflected by the reflecting mirror are emitted to the reflecting structure, the light rays reflected by the reflecting structure are emitted to the reflecting mirror, and the light rays reflected by the reflecting mirror are emitted through the light outlet, so that the light rays emitted through the light outlet are imaged through external projection equipment.

In addition, the second image source and the first image source are symmetrically arranged about the reflecting surface of the transflective mirror, and the first imaging light rays are superposed with the second imaging light rays after being transmitted through the transflective mirror. The first imaging light rays are overlapped with the second imaging light rays after being transmitted through the transflective lens, so that the intensity of the imaging light rays is increased, and the imaging is clearer.

In addition, still include: a light characteristic conversion element provided between the reflection structure and the transflective lens for transmitting the light of the first characteristic and reflecting the light of other characteristics than the first characteristic, the light characteristic conversion element converting the characteristics of the transmitted light; the first imaging light rays are emitted to the transflective mirror, light rays with first characteristics in the first imaging light rays are transmitted to the optical characteristic conversion element, the light rays with the first characteristics are converted into light rays with second characteristics after being transmitted by the optical characteristic conversion element and then emitted to the reflecting structure, the light rays with the second characteristics reflected by the reflecting structure are emitted to the optical characteristic conversion element, the light rays with the second characteristics are converted into light rays with third characteristics after being transmitted by the optical characteristic conversion element and then emitted to the transflective mirror, and the light rays reflected by the transflective mirror are emitted through the light outlet, so that the light rays emitted through the light outlet are imaged through external projection equipment; wherein the first characteristic, the second characteristic, and the third characteristic are all different.

In addition, still include: a light characteristic conversion element provided between the reflection structure and the transflective lens for transmitting the light of the first characteristic and reflecting the light of other characteristics than the first characteristic, the light characteristic conversion element converting the characteristics of the transmitted light; the first imaging light rays are emitted to the reflecting mirror, light rays with first characteristics in the first imaging light rays are transmitted to the optical characteristic conversion element, the light with the first characteristic is transmitted through the light characteristic conversion element and then converted into light with the second characteristic to be emitted to the reflecting structure, the light rays with the second characteristic reflected by the reflecting structure are emitted to the light characteristic conversion element, the light ray with the second characteristic is transmitted through the optical characteristic conversion element and then converted into the light ray with the third characteristic to be emitted to the reflecting mirror, the light having the third characteristic reflected by the transflective mirror exits onto the light characteristic conversion element, the light rays with the third characteristic are converted into light rays with the fourth characteristic after being transmitted through the light characteristic conversion element and then are emitted through the light outlet, so that the light rays emitted through the light outlet are imaged through an external projection device; wherein the first, second, third, and fourth characteristics are all different.

In addition, the optical characteristic conversion element is a wave plate.

Additionally, the reflective structure and/or the mirror may be movably disposed within the housing. The reflecting structure and/or the transflective mirror are movably arranged in the bridge body, and the optical path and the imaging position of the imaging light can be changed through the movement of the reflecting structure and/or the transflective mirror, so that more use requirements are met, and the application range of the head-up display equipment is widened.

In addition, the reflecting structure is movably arranged in the shell along a first preset direction, and the first preset direction is any direction in an included angle formed by an incident main shaft of the reflecting structure and a reflecting main shaft;

in addition, the first preset direction is an angular bisector direction of the included angle formed by the incident main shaft and the reflection main shaft of the reflection structure.

In addition, the transflective mirror is movably arranged in the shell along a second preset direction, and the second preset direction is any direction in an included angle formed by an incident main shaft and a reflection main shaft of the transflective mirror.

In addition, the second preset direction is an angular bisector direction of the included angle formed by the incident main shaft and the reflection main shaft of the transflective mirror.

Additionally, the image source is movably disposed within the housing. The image source is movably arranged in the bridge body, and the optical path and the imaging position of the imaging light can be changed through the movement of the image source, so that more use requirements are met, and the application range of the head-up display device is widened.

In addition, still include: a shielding portion; the light outlet of the shell is provided with a sealing piece, and the shielding part is used for shielding external light rays emitted to the sealing piece along a third preset direction. Set up the occlusion part, block through the occlusion part and shine the external light on the light-emitting window along first direction of predetermineeing to avoid setting up in the sealing member on the light-emitting window reflects the driver's eye with external light, thereby reduce the production of dazzling light on the light-emitting window.

In addition, the reflecting structure at least partially extends to the outside of the shell to form the shielding part. The reflecting structure partially extends to the outside of the shell to form a shielding part, so that the shielding part does not need to be additionally arranged, the preparation process is simplified, and meanwhile, the partial reflecting structure can be arranged outside the shell, so that the volume of the head-up display device is further reduced.

In addition, the image source includes a light source, a backlight assembly, and an image generating element; the backlight assembly is used for transmitting the light rays emitted by the light source; the image generating element is used for converting the light transmitted by the backlight assembly into the imaging light.

In addition, the backlight assembly comprises a reflecting light guide element, a direction control element and a dispersion element; the reflecting light guide element is used for collecting light rays emitted by the light source; the direction control element is used for converging the light rays after passing through the reflecting light guide assembly; the diffusion element is used for diffusing the light rays converged by the direction control element at a preset angle.

In addition, the reflective light guide element comprises a hollow lamp cup; the hollow lamp cup comprises a hollow shell surrounded by a reflecting wall, a light outlet of the hollow lamp cup faces the direction control element, the light source is arranged at one end of the hollow lamp cup, which is far away from the light outlet, and light emitted by the light source is reflected when being incident on the reflecting wall, so that the light reflected by the reflecting wall is emitted to the direction control element through the light outlet.

In addition, still include the sunglasses, its characterized in that includes: the sunglasses are used for transmitting light in the P polarization state and blocking light in other states.

In addition, the optical imaging device further comprises a phase delay element arranged between the light outlet and the projection equipment, the imaging light emitted through the light outlet is S-polarized light, and the phase delay element is used for converting the S-polarized light emitted through the light outlet into circularly polarized light. A phase delay element is arranged between the projection devices at the light outlet to convert S polarized light emitted from the light outlet into circularly polarized light, and the circularly polarized light has a P polarized component, so that drivers and passengers can still clearly see images formed by the head-up display device when wearing sunglasses.

In addition, a P polarization reflecting film is arranged on the projection equipment, and imaging light emitted through the light outlet is P polarized light. The P polarization reflecting film is arranged on the projection equipment, so that the reflectivity of imaging light rays in a P polarization state on the projection equipment can be improved, and the imaging definition of drivers and passengers watching the head-up display equipment when wearing sunglasses is improved.

In addition, the projection equipment is a windshield, and a wedge-shaped film is arranged in the windshield. The wedge-shaped film is arranged in the windshield, so that double images of the images can be eliminated, and the definition of the images is improved.

In addition, the projection device further comprises a selective reflection film arranged on the projection device, and the selective reflection film is used for reflecting the imaging light. Set up selective reflection membrane on projection equipment and reflect formation of image light, avoid formation of image light to form secondary imaging on projection equipment, eliminate the ghost image of formation of image, promote the definition of formation of image.

Drawings

Fig. 1 is a schematic structural diagram of a head-up display device according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of an image source in a head-up display device according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a backlight assembly in a head-up display device according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a backlight assembly in a head-up display device according to a first embodiment of the present invention;

fig. 5 is a schematic structural diagram of a backlight assembly in a head-up display device according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a backlight assembly in a head-up display device according to another embodiment of the present invention;

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

fig. 8 is a schematic structural diagram of a head-up display device according to a third embodiment of the present invention;

fig. 9 is a schematic structural diagram of a head-up display device according to a fourth embodiment of the present invention;

fig. 10 is a schematic structural diagram of a head-up display apparatus according to a fifth embodiment of the present invention;

fig. 11 is a schematic structural diagram of a head-up display device according to another embodiment of the present invention;

fig. 12 is a schematic structural view of a motor vehicle according to a sixth embodiment of the present invention;

fig. 13 is a schematic structural view of a motor vehicle according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

The utility model discloses a first embodiment relates to a new line display device, and concrete structure is as shown in figure 1, include: a housing 10; a first image source 20 and an optical assembly 30 disposed within the housing 10; the housing 10 is provided with a light outlet 11, the optical assembly 30 includes a light-transmitting mirror 31 and a reflecting structure 32, the reflecting structure 32 is a curved-surface reflecting structure, the first image source 20 is disposed on one side of the light-transmitting mirror 31 far away from the light outlet 11, and the reflecting structure 32 is disposed on one side of the light-transmitting mirror 31 close to the light outlet 11. The first image source 20 is configured to emit a first imaging light, the transflective mirror 31 allows light to be reflected and allows light to be transmitted, the first imaging light emitted from the first image source 20 is emitted to the transflective mirror 31, the light transmitted by the transflective mirror 31 is emitted to the reflective structure 32 to be reflected, the light reflected by the reflective structure 32 is emitted to the transflective mirror 31, and the light reflected by the transflective mirror 31 is emitted through the light outlet 11, so that the light emitted through the light outlet 11 is imaged by an external projection device.

Compared with the prior art, the head-up display device provided by the first embodiment of the present invention sets the first image source 20 on the side of the transflective mirror 31 away from the light outlet 11, and the first imaging light emitted from the first image source 20 can be transmitted through the transflective mirror 31 and then reflected to the light outlet 11 via the reflective structure 32 and the transflective mirror 31 again, so as to ensure the optical path of the imaging light; in addition, the image source is arranged on one side of the transflective mirror 31 far away from the light outlet 11, and under the condition that the required optical path is fixed, the space between the image source and the light outlet 11 can be better utilized, so that the space utilization rate is improved, and the volume of the head-up display device is reduced.

Specifically, in the present embodiment, the transflective mirror 31 may transmit a part of the light irradiated to the surface thereof and reflect a part of the light irradiated to the surface thereof. For example, the transflective mirror 31 may reflect 50% of the light and may transmit 50% of the light, or the transflective mirror 31 may reflect 60% of the light and may transmit 40% of the light, or the transflective mirror 31 may reflect 70% of the light and may transmit 30% of the light, and so on. Common materials for the transflective lens 31 may include glass, transparent plastic, etc. That is, when the first imaging light beam irradiates the transflective mirror 31 for the first time, a portion of the first imaging light beam transmits through the transflective mirror 31 to irradiate on the reflective structure 32, and is reflected by the reflective structure 32 to irradiate on the transflective mirror 31 again, and a portion of the first imaging light beam is reflected to the light outlet 11 to be emitted, so that the light beam emitted through the light outlet 11 is imaged by an external projection device.

In the present embodiment, the reflective structure 32 is a curved reflective structure. Providing the reflective structure 32 as a curved reflective structure can magnify the image and provide a greater imaging distance.

Further, in the present embodiment, the reflective structure 32 is movably disposed in the housing 10, for example, a guide rail is disposed, a slider is movably disposed on the guide rail, and the reflective structure 32 is fixed to the slider, so that the reflective structure 32 is movably disposed in the housing 10. It is understood that the movable arrangement of the reflection structure 32 in the housing 10 by means of the guide rails and the sliders is only an example of a specific implementation and is not limiting, and in actual production, the movable arrangement of the reflection structure 32 in the housing 10 may be realized by other means, such as by motor driving, by electromagnetic driving, etc. The reflection structure 32 is movably arranged in the housing 10, and the optical path of the imaging light and the imaging position can be changed by moving the reflection structure 32, so that more use requirements are met, and the application range of the head-up display device is widened. It is understood that the aforementioned reflective structure 32 is movably disposed in the housing 10, which is only a specific example in the present embodiment, and is not limited thereto, and during the actual production and use, the transflective mirror 31 may be movably disposed in the housing 10, or both the reflective structure 32 and the transflective mirror 31 may be movably disposed in the housing 10, and may be flexibly disposed according to the actual requirement.

Specifically, in the present embodiment, the reflection structure 32 is movably disposed in the housing 10 along a first preset direction. The first predetermined direction is a bisector direction of an angle formed by the incident main axis and the reflection main axis of the reflection structure 32. The incident main shaft is the central line of the incident beam, and the reflection main shaft is the central line of the reflected beam. It is understood that the aforementioned first predetermined direction is only a specific example of the present embodiment, and is not limited thereto, in other embodiments of the present invention, the first predetermined direction may also be any direction within the included angle formed by the incident main axis and the reflection main axis of the reflection structure 32, and specifically, the first predetermined direction may be flexibly set according to actual requirements.

It will be appreciated that in this embodiment, the mirror 31 is movably arranged in the housing 10 in a second predetermined direction. The second preset direction is an angular bisector direction of an included angle formed by the incident main axis and the reflection main axis of the transflective mirror 31. The incident main shaft is the central line of the incident beam, and the reflection main shaft is the central line of the reflected beam. It can be understood that the angle bisector direction of the included angle formed by the incident main axis and the reflection main axis of the transflective mirror 31 in the aforementioned second preset direction is only a specific example in this embodiment, and is not limited to this embodiment.

Further, in the present embodiment, the image source 20 is movably disposed in the housing 10, for example, a guide rail is disposed, a slider is movably disposed on the guide rail, and the image source 20 and the slider are fixed, so that the image source 20 is movably disposed in the housing 10. It is understood that the movable arrangement of the image source 20 in the housing 10 by means of the guide rail and the slider is only an example of a specific implementation and is not limiting, and in actual production, the movable arrangement of the image source 20 in the housing 10 may be realized by other means, such as by motor driving, by electromagnetic driving, etc. The image source 20 is movably arranged in the shell 10, and the optical path of the imaging light and the imaging position can be changed by moving the image source 20, so that more use requirements are met, and the application range of the head-up display device is widened.

Specifically, in the present embodiment, the image source 20 is movably disposed in the housing 10 along the extension direction of the principal axis of the imaging light. It should be understood that the foregoing movable arrangement of the image source 20 in the main axis extending direction of the imaging light in the housing 10 is only a specific example in this embodiment, and is not limited thereto, and in other embodiments of the present invention, the image source 20 may be arranged in the housing 10 in other directions, and may be flexibly arranged according to actual needs.

Specifically, in the present embodiment, as shown in fig. 2 and 3, the first image source 20 includes a light source 21 for generating light, a backlight assembly 22 for transmitting the light emitted from the light source 21, and an image generating element 23 for converting the light transmitted through the backlight assembly 22 into imaging light. The backlight assembly 22 may include a reflection light guide element 221, a direction control element 222, and a diffusion element 223 sequentially disposed on the light emitting side of the light source 21, wherein the reflection light guide element 221 is configured to collect light emitted by the light source 21 and transmit the collected light to the direction control element 222, the direction control element 222 is configured to converge the light collected by the reflection light guide element and transmit the converged light to the diffusion element 223, and the diffusion element 223 is configured to diverge the light converged by the direction control element 222 at a preset angle and transmit the diffused light to the image generating element 23. Specifically, the reflective light guide element 221 is disposed on the light emitting side of the light source 21, the direction control element 222 is disposed on the light emitting side of the reflective light guide element 221 and on the light emitting side of the reflective light guide element 221, and the dispersing element 223 is disposed on the light emitting side of the reflective light guide element 221.

The Light source 21 is used for generating Light, and may include at least one electroluminescent element, which generates Light by electric Field excitation, such as a Light Emitting Diode (LED), an organic Light-Emitting Diode (OLED), a Mini LED (Mini LED), a Micro LED (Micro LED), a Cold Cathode Fluorescent Lamp (CCFL), an LED Cold Light source 21(Cold LED Light, CLL), an Electro Luminescence (EL), an electron Emission (Field Emission display, FED), or a quantum Dot Light source 21 (quantum Dot, QD). The image generating element 23 includes a liquid crystal panel that converts light emitted from the light source 21 into image light.

As shown in fig. 3, in this embodiment, the reflective light guide element 221 is a hollow lamp cup, the hollow lamp cup includes a hollow housing surrounded by a reflective wall 2211, the hollow housing includes a light outlet opening 2212, the light outlet opening 2212 is disposed toward the direction control element 222, the light source 21 is disposed at an end of the hollow lamp cup away from the light outlet opening 2212, and light emitted from the light source 21 is reflected when entering the reflective wall 2211, so that the light reflected by the reflective wall is emitted to the direction control element 222 through the light outlet opening 2212. That is, of the light emitted from the light source 21, the light emitted to the light exit opening 2212 directly irradiates the direction control element 222, and the light emitted to the light reflecting wall 2211 is reflected by the light reflecting wall 2211 and then irradiates the direction control element 222 from the light exit opening 2212, so that the utilization rate of the light source 21 is improved.

The external shape of the reflective light guide element 221 may be a triangular pyramid shape, a quadrangular pyramid shape, or a paraboloid shape (similar to a bowl shape). In this embodiment, as shown in fig. 4, the external shape of the reflective light guide element 221 is a quadrangular pyramid, the shapes of the light exit opening 2212 and the bottom of the reflective light guide element 221 may be a circle, an ellipse, a rectangle, a square, a trapezoid or a parallelogram, and the shapes of the light exit opening 2212 and the bottom may be the same or different.

The direction control element 222 is disposed at the light exit opening 2212, that is, the direction control element 222 can be tightly attached to the light exit opening 2212 or keep a certain distance from the light exit opening 2212, and the direction control element 222 controls the direction of the light emitted from the reflective light guide element 221, so as to focus the light to a predetermined range, further gather the light, and improve the light utilization rate. The direction control element 222 may be a lens or a lens combination, such as a convex lens, a fresnel lens or a lens combination, and in the present embodiment, the direction control element 222 is a convex lens. It is understood that the predetermined range may be a point, such as a focal point of a convex lens, or a smaller area, and the direction control element 222 is disposed to focus the large-angle light emitted from the light source 21, so as to improve the light utilization rate.

The diffusing element 223 diffuses light into a beam having a distribution angle, the smaller the diffusion angle, the higher the brightness of the beam, and vice versa. The diffusion element 223 diffuses the collected light at a certain angle, so that the diffusion degree of the light is increased, and the light can be uniformly distributed in a certain area. The dispersing element 223 may be a diffractive optical element, such as a beam shaping element (beam splitter), and after passing through the dispersing element 223, the light is dispersed and forms a beam with a specific cross-sectional shape, including but not limited to a line, a circle, an ellipse, a square, or a rectangle. By controlling the microstructure of the dispersion element 223, the dispersion angle, the cross-sectional shape, and the like of the light can be precisely controlled, and the dispersion effect can be precisely controlled.

It should be noted that the reflective light guide element 221 is not limited to the hollow lamp cup structure described above, and may be other structures. For example, as shown in fig. 5, the light guide element is a solid light-transmitting member with a refractive index greater than 1, and includes a light exit surface 2213, a light reflection surface 2214, and a light source accommodating groove 2215. The light-emitting surface 2213 is adjacent to the direction control element 222, the light-reflecting surface 2214 extends from the periphery of the light-emitting surface 2213 to the direction away from the direction control element 222 (not shown), and the light source accommodating groove 2215 is located on the side of the light-reflecting surface 2214 away from the light-emitting surface 2213 and is recessed from the edge of the light-reflecting surface 2214 on the side toward the side close to the light-emitting surface 2213. The light source accommodating groove 2215 includes a bottom wall 2215a opposite to the light exit surface 2213, and side walls connecting the periphery of the bottom wall 2215a to the light reflection surface 2214, wherein the bottom wall 2215a and the side walls are light entrance surfaces of the light guide element. In this way, the light source 21 is disposed in the light source accommodating groove 2215 and faces the bottom wall 2215a of the light source accommodating groove 2215. The bottom wall 2215a is a convex surface protruding in a direction away from the light exit surface 2213, and the convex surface is used for entering the light emitted from the light source 21 and converting the light into collimated light when the light enters through the convex surface. The collimated light refers to a parallel or nearly parallel light with a small divergence angle of light or almost 0, and when the collimated light is incident on the image generating element 23, the uniformity of the light is better, which is more favorable for light conversion and imaging.

Preferably, the bottom wall 2215a converts the incident light into a collimated light, and the collimated light is perpendicular to the light exit surface 2213. Of course, it is understood that the light incident through the bottom wall 2215a is not necessarily perpendicular to the light emitting surface 2213 after being converted into the collimated light, and may also form a specific angle (between 0 degree and 90 degrees) with the light emitting surface 2213 based on specific considerations. It should be noted that the light reflecting surface 2214 is an inner surface of the light guiding element, since the refractive index of the light guiding element is greater than 1, after the large-angle light emitted from the light source 21 is incident on the light reflecting surface 2214 through the side wall, the light meeting the total reflection condition is totally reflected on the light reflecting surface 2214 of the light guiding element and exits through the light exit surface 2213, and the small-angle light emitted from the light source 21 is incident into the light guiding element through the bottom wall 2215a but not incident on the light reflecting surface 2214, but directly enters the light exit surface 2213 and exits through the light exit surface 2213.

It should be noted that, in this embodiment, the bottom wall 2215a is set to be a convex surface, so that a plano-convex lens structure is formed by the convex bottom wall 2215a, and the function of adjusting the small-angle light ray strips to be collimated light rays is achieved, fig. 6 illustrates only a plano-convex lens formed by a convex surface as an example, but in other modified embodiments, such a convex surface may also be used to form a collimating lens with a light collimating function, such as a fresnel lens or a lens combination, and the convex surface may be separately set and mounted on the solid light-transmitting member, or may be integrally formed with the solid light-transmitting member. The shape of the light-reflecting surface 2214 includes a curved surface shape, such as a parabolic shape, a free-form surface shape or a conical surface shape, and the like, so that the incident angle of the large-angle light incident on the light-reflecting surface 2214 can be effectively increased, thereby easily meeting the critical condition of total reflection of light propagation, and ensuring that as much light as possible is reflected by the light-reflecting surface 2214 to the light-emitting surface 2213 for exiting for imaging, thereby improving the utilization efficiency of the light. The bottom wall 2215a of the light source accommodating groove 2215 is not limited to the convex structure described above, and may have other structures as long as "the light source accommodating groove converts incident light into collimated light and emits the collimated light" can be ensured. For example, as shown in fig. 6, the light emitting surface 2213 is provided with a blind hole 2216 recessed towards the bottom wall 2215a, a bottom surface 2216a of the blind hole 2216 is a convex surface protruding towards one side of the light emitting surface 2213, the convex surface is used for emitting light entering through the bottom wall 2215a and converting the light into collimated light when the light exits through the convex surface, and the specific implementation of the convex surface is similar to the convex surface of the bottom wall 2215a in the above embodiment, and is not described here again. Under such an arrangement, the bottom wall 2215a is a plane parallel to the light exit surface 2213, and of course, there are many other possibilities for the shape design of the bottom wall 2215a, which are not described herein again.

A second embodiment of the present invention relates to a head-up display device. As shown in fig. 7, the second embodiment is substantially the same as the first embodiment, and includes a housing 10, an image source 20, an optical unit 30; the main differences are as follows: in the present embodiment, the present invention further includes: a shield 40 and a closure 50. The sealing member 50 is disposed at the light outlet 11, and the shielding portion 40 is disposed on the housing 10 and is used for shielding external light emitted to the sealing member 50 along the third predetermined direction a.

Specifically, in the present embodiment, the third predetermined direction a is an irradiation direction of the external light, for example, when the vehicle is traveling against the sunlight, the sunlight is directly irradiated onto the sealing member 50 from the front windshield, and further a specular reflection is formed on the surface of the sealing member 50, so that a glare spot is formed in the eyes of the driver, which affects the normal driving of the driver, and the first predetermined direction at this time is a direction of the sunlight irradiating the front windshield of the vehicle.

Compared with the prior art, the head-up display device provided by the second embodiment of the present invention maintains all technical effects of the first embodiment, and the sealing member 50 is disposed on the light emitting port 11, so that external dust and impurities can be effectively prevented from entering the interior of the head-up display device, and the reliability of the head-up display device is improved; in addition, the shielding part 40 is disposed on the housing 10 to block the sunlight that irradiates onto the sealing member 50 along the third predetermined direction, so that the sealing member 50 can be effectively prevented from directly reflecting the sunlight to human eyes, and a high-brightness area that the sunlight may form on the sealing member 50 can be eliminated.

Preferably, in the present embodiment, the shielding portion 40 is movably provided on the housing 10. The shielding portion 40 is movably disposed on the housing 10, so that the shielding portion can be adjusted according to the incident direction of the external light, thereby better blocking the external light and further preventing the external light from forming a highlight area on the sealing member 50. For example, a ring-shaped guide rail is provided around the light exit 11, a slider is movably provided on the ring-shaped guide rail, and the shielding portion 40 is fixed to the slider. It should be understood that the foregoing is only an illustration of one specific implementation manner of the present embodiment, in which the shielding portion 40 is movably disposed on the housing 10, and is not limiting.

A third embodiment of the present invention relates to a head-up display device. As shown in fig. 8, the third embodiment is substantially the same as the second embodiment, and includes a housing 10, an image source 20, an optical unit 30, and a sealing member 50; the main differences are as follows: in the present embodiment, the second reflecting structure 32 partially extends to the outside of the housing 10 to form the shielding portion 40.

Compared with the prior art, the utility model discloses the new line display equipment that the third embodiment provided sets up second reflection configuration 32 to form shielding part 40 outside the casing 10 as the part extends when keeping the whole technological effects of first embodiment, when eliminating the highlight region, the volume of the new line display equipment that can further reduce.

A fourth embodiment of the present invention relates to a head-up display device. As shown in fig. 9, the fourth embodiment is substantially the same as the first embodiment, and includes a housing 10, a first image source 20, and an optical assembly 30, and is mainly different in that: in the present embodiment, the apparatus further includes a second image source 60, and the second image source 60 is disposed on a side of the transflective mirror 31 close to the light outlet 11 and is used for emitting a second imaging light.

Specifically, the second imaging light is emitted to the transparent mirror 31, the light reflected by the transparent mirror 31 is emitted to the reflecting structure 32, the light reflected by the reflecting structure 32 is emitted to the transparent mirror 31, and the light reflected by the transparent mirror 31 is emitted through the light outlet 11, so that the light emitted through the light outlet 11 is imaged through an external projection device.

Specifically, in the present embodiment, the second image source and the first image source 20 are disposed symmetrically with respect to the reflection surface of the half mirror 31, and the first imaging light passes through the half mirror 31 and then coincides with the second imaging light.

Compared with the prior art, the utility model discloses set up first light source and second image source in the new line display equipment that fourth embodiment provided, first formation of image light passes through behind the transflective lens 31 and coincides with second formation of image light, intensity that can effectual reinforcing formation of image light promotes the definition of formation of image.

A fifth embodiment of the present invention relates to a head-up display device. As shown in fig. 10, the fifth embodiment is substantially the same as the first embodiment, and includes a housing 10, a first image source 20, and an optical unit 30, and is mainly different in that: in the present embodiment, the optical characteristic conversion device 70 is further included, the optical characteristic conversion device is disposed between the reflection structure 32 and the transflective lens 31, the transflective lens 31 is a polarization transflective lens 31, and is used for transmitting the light with the first characteristic and reflecting the light with other characteristics, and the optical characteristic conversion device is used for converting the characteristics of the transmitted light; the first imaging light rays are emitted to the transflective mirror 31, the light rays with the first characteristic in the first imaging light rays are transmitted to the optical characteristic conversion element, the light rays with the first characteristic are converted into the light rays with the second characteristic after being transmitted by the optical characteristic conversion element and then emitted to the reflecting structure 32, the light rays with the second characteristic reflected by the reflecting structure 32 are emitted to the optical characteristic conversion element, the light rays with the second characteristic are converted into the light rays with the third characteristic after being transmitted by the optical characteristic conversion element and then emitted to the transflective mirror 31, and the light rays reflected by the transflective mirror 31 are emitted through the light outlet 11, so that the light rays emitted through the light outlet 11 are imaged through an external projection device; wherein the first characteristic, the second characteristic and the third characteristic are all different.

Compared with the prior art, the utility model discloses the fifth embodiment sets up the mirror 31 that passes through for polarization mirror 31 when keeping the whole technological effects of first embodiment, sets up light characteristic conversion element, and the light that will throw the first characteristic of mirror 31 is converted into the light of second characteristic and reflects on polarization mirror 31, reduces the light loss, promotes the definition of formation of image.

Specifically, in this embodiment, the optical characteristic conversion element is a wave plate, for example, an 1/4 wave plate or a 1/2 wave plate. Here, the optical characteristic conversion element is an 1/4 wave plate, for example, the first imaging light with the first characteristic is a vertically polarized light, the vertically polarized light is a light which is transmitted through the 1/4 wave plate for the first time and then converted into a light with the second characteristic, that is, a circularly polarized light, the circularly polarized light is reflected by the reflection structure 32 and then passes through the 1/4 wave plate again and is converted into a light with the third characteristic, that is, a horizontally polarized light, and after the horizontally polarized light is irradiated onto the transflective mirror 31, since the polarized transflective mirror 31 can only transmit the light with the first characteristic, that is, the vertically polarized light, the horizontally polarized light is totally reflected to the light outlet 11 and is emitted. Therefore, the loss of the first imaging light is reduced, and the imaging definition is improved. It should be understood that the foregoing is only a specific example in this embodiment, and is not limited thereto, and in other embodiments of the present invention, as shown in fig. 11, the first imaging light is emitted to the transflective mirror 31, the light having the first characteristic in the first imaging light is transmitted to the optical characteristic conversion element, the light having the first characteristic is transmitted through the optical characteristic conversion element and converted into the light having the second characteristic and emitted to the reflective structure 32, the light having the second characteristic and reflected by the reflective structure 32 is emitted to the optical characteristic conversion element, the light having the second characteristic is transmitted through the optical characteristic conversion element and converted into the light having the third characteristic and emitted to the transflective mirror 31, the light having the third characteristic and reflected by the transflective mirror 31 is emitted to the optical characteristic conversion element, the light having the third characteristic is converted into the light having the fourth characteristic and emitted through the light outlet 11, so that the light emitted through the light outlet 11 is imaged via an external projection device; wherein the first characteristic, the second characteristic, the third characteristic and the fourth characteristic are all different.

A sixth embodiment of the present invention provides a motor vehicle, as shown in fig. 12, including a projection apparatus 100, and a head-up display apparatus provided as in the first embodiment, wherein the projection apparatus 100 is configured to image the imaging light emitted through a light emitting port 11. The head-up display device includes a housing 10, a light outlet 11, an image source 20, and an optical assembly 30.

After being projected to the projection device 100, the imaging light emitted from the image source 20 is reflected to the area where the eyes of the driver are located (i.e., the eye box area 200), so that the driver can see the HUD image. It should be noted that the eye box area 200 has a certain size, and both eyes of the driver are deviated from the center of the eye box area 200 by a certain distance, such as up and down, left and right, and the image of the HUD can be seen as long as the driver is still in the eye box area. Since the image source 20 includes the diffusion element 223 as shown in fig. 4, the embodiment can accurately diffuse the light through the diffusion element 223, so that the diffused light beam can cover the eye box region after being reflected by the optical assembly 30 and the projection apparatus 100, and the eye box region is just covered in the embodiment, so as to achieve high light efficiency and not affect normal observation. It will be appreciated that the dispersed beam may be larger than the eye box area, as long as complete coverage of the eye box is ensured; preferably, the diffusing element 223 is arranged such that the diffused light beam covers just the eye box area, where the system is most light efficient.

In this embodiment, the projection apparatus 100 may be a windshield of an automobile, and because the windshield has a high reflectivity for S polarized light, the light emitted from the image source 20 including the backlight module and the imaging module is generally S polarized light, for example, the image source 20 is an lcd (liquid crystal display) module emitting S polarized light. However, when the driver wears the sunglasses, the sunglasses filter the S-polarized light, i.e., block the S-polarized light and transmit the P-polarized light, so that the HUD image may not be visible when the sunglasses are worn. Therefore, it is preferable that a phase retardation element 300, such as an 1/4 wave plate, be provided between the light outlet 11 and the windshield (i.e., the projection device 100) to convert the S-polarized image light into circularly polarized light to generate a P-polarized light component, so that the driver can see the HUD image even when wearing sunglasses. Of course, the phase delay element 300 is not limited to be disposed between the windshield and the light exit 11, and may be disposed at any other position in the imaging light propagation path, such as: a. arranged between the first reflecting structure 31 and the light outlet 11; b. on a side surface of the closure 50 adjacent the first reflective structure 31, etc. It can be understood that if the image source 20 is adjusted to emit P-polarized imaging light, the phase retardation element 300 may not be provided to ensure that the driver can see the image when wearing sunglasses, but because the reflectivity of the windshield to P-polarized light is very low, as shown in fig. 13, a P-polarized reflective film 400 may be provided on the windshield (i.e., the projection apparatus 100) to enhance the reflection of P-polarized light, so as to improve the definition of the image. In addition, after part of the image light passes through the P-polarized reflective film 400, since the glass has high transmittance for the P-polarized light, the transmitted P-polarized light also passes through the windshield (i.e., the projection apparatus 100), and the inner surface of the windshield (i.e., the projection apparatus 100) on the outer side has low reflectance, thereby eliminating ghost images.

Furthermore, it can be understood that the head up display system provided in the fourth embodiment of the present invention may also be replaced with the head up display device provided in any one of the second and third embodiments.

When the transflective device is a windshield, since the windshield is generally a curved surface, the position of the virtual image formed by the reflection of the image source 20 by the curved surface reflection structure is located at a focal plane of the windshield, or is smaller than one focal length of the windshield and close to the focal plane of the windshield. In this case, according to the curved-surface imaging rule, a virtual image (indicated by a dotted rectangle in fig. 12) formed by the image source 20 after passing through the reflective element and the windshield may be formed at a longer distance or even at infinity, such as 20 meters, 30 meters, 50 meters, or even at infinity, and is suitable for use in an AR-HUD, and has a better enhanced display and attachment effect with an outdoor real scene.

Preferably, when the projection apparatus 100 is a windshield, a wedge-shaped film may be added in the interlayer of the projection apparatus 100, and the wedge-shaped film may eliminate double images.

In addition, on the projection apparatus 100, a selective reflection film may be further added on the inner surface (the surface of the windshield facing the reflection element), and the selective reflection film only reflects the imaging light emitted from the image source 20, and if the imaging light includes light of three RGB bands, the selective reflection film only reflects the RGB light and transmits other light, so that the imaging light is not reflected twice on the inner surface of the outer side of the windshield (the side of the windshield facing away from the reflection element), and the ghost image is eliminated.

In addition, 1/2 wave plate or 1/4 wave plate can be additionally arranged on the inner surface of the windshield to be matched with the image source 20 capable of emitting S polarized light, after the S polarized imaging light is reflected by the reflecting film, the transmitted light is converted into circularly polarized light or P polarized light through the wave plate, the reflectivity of the inner surface on the outer side of the windshield is low, and therefore double images are eliminated. In addition, a P-polarized light reflecting film can be additionally arranged on the inner surface of the windshield, and the P-polarized light reflecting film is matched with the image source 20 capable of emitting P-polarized light, so that after P-polarized imaging light is reflected by the reflecting film, the glass has high transmittance to the P-polarized light, the transmitted P light can also transmit out of the windshield, the reflectivity of the inner surface on the outer side of the windshield is low, and further ghost images are eliminated.

It should be understood that this embodiment is a system example corresponding to the embodiment of the head-up display device, and the embodiment can be implemented in cooperation with the embodiment of the head-up display device. Related technical details mentioned in the foregoing embodiments of the head-up display device are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related art details mentioned in the present embodiment can also be applied to the embodiments of the head up display apparatus described above.

Those skilled in the art can understand that all or part of the steps in the method of the foregoing embodiments may be implemented by a program to instruct related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, etc.) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims (23)

1. A head-up display device, comprising:

a housing;

a first image source and an optical assembly disposed within the housing;

wherein, the shell is provided with a light outlet, the optical component comprises a reflecting structure and a reflecting mirror, the reflecting structure is a curved surface reflecting structure, the first image source is arranged on one side of the light outlet of the light-transmitting mirror, the reflecting structure is arranged on one side of the light-transmitting mirror close to the light outlet, the first image source is used for emitting first imaging light rays, the transflective lens allows light rays to be reflected and allows light rays to be transmitted, the first imaging light rays emitted by the first image source are emitted to the transflective lens, the light transmitted by the reflecting mirror is emitted to the reflecting structure for reflection, the light reflected by the reflecting structure is emitted to the reflecting mirror, the first imaging light reflected by the reflecting mirror is emitted through the light outlet, so that the first imaging light emitted through the light outlet is imaged by an external projection device.

2. The heads-up display device of claim 1 further comprising:

the second image source is used for emitting second imaging light rays and is positioned on one side of the reflecting mirror, which is close to the light outlet;

the second imaging light rays are emitted to the reflecting mirror, the light rays reflected by the reflecting mirror are emitted to the reflecting structure, the light rays reflected by the reflecting structure are emitted to the reflecting mirror, and the light rays reflected by the reflecting mirror are emitted through the light outlet, so that the light rays emitted through the light outlet are imaged through external projection equipment.

3. The heads-up display device of claim 2 wherein the second image source and the first image source are symmetrically disposed about a reflective surface of the transflector, and the first imaged light is transmitted through the transflector and then coincides with the second imaged light.

4. The heads-up display device of claim 1 further comprising:

a light characteristic conversion element provided between the reflection structure and the transflective lens for transmitting the light of the first characteristic and reflecting the light of other characteristics than the first characteristic, the light characteristic conversion element converting the characteristics of the transmitted light;

the first imaging light rays are emitted to the transflective mirror, light rays with first characteristics in the first imaging light rays are transmitted to the optical characteristic conversion element, the light rays with the first characteristics are converted into light rays with second characteristics after being transmitted by the optical characteristic conversion element and then emitted to the reflecting structure, the light rays with the second characteristics reflected by the reflecting structure are emitted to the optical characteristic conversion element, the light rays with the second characteristics are converted into light rays with third characteristics after being transmitted by the optical characteristic conversion element and then emitted to the transflective mirror, and the light rays reflected by the transflective mirror are emitted through the light outlet, so that the light rays emitted through the light outlet are imaged through external projection equipment;

wherein the first characteristic, the second characteristic, and the third characteristic are all different.

5. The heads-up display device of claim 1 further comprising:

a light characteristic conversion element provided between the reflection structure and the transflective lens for transmitting the light of the first characteristic and reflecting the light of other characteristics than the first characteristic, the light characteristic conversion element converting the characteristics of the transmitted light;

the first imaging light rays are emitted to the reflecting mirror, light rays with first characteristics in the first imaging light rays are transmitted to the optical characteristic conversion element, the light with the first characteristic is transmitted through the light characteristic conversion element and then converted into light with the second characteristic to be emitted to the reflecting structure, the light rays with the second characteristic reflected by the reflecting structure are emitted to the light characteristic conversion element, the light ray with the second characteristic is transmitted through the optical characteristic conversion element and then converted into the light ray with the third characteristic to be emitted to the reflecting mirror, the light having the third characteristic reflected by the transflective mirror exits onto the light characteristic conversion element, the light rays with the third characteristic are converted into light rays with the fourth characteristic after being transmitted through the light characteristic conversion element and then are emitted through the light outlet, so that the light rays emitted through the light outlet are imaged through an external projection device;

wherein the first, second, third, and fourth characteristics are all different.

6. The head-up display device according to claim 4 or 5, wherein the optical characteristic conversion element is a wave plate.

7. The heads-up display device of claim 1 wherein the reflective structure and/or the mirror are movably disposed within the housing.

8. The head-up display device of claim 7, wherein the reflective structure is movably disposed in the housing along a first predetermined direction, and the first predetermined direction is any direction within an included angle formed by a main incident axis and a main reflection axis of the reflective structure.

9. The head-up display device according to claim 8, wherein the first predetermined direction is a bisector direction of the included angle formed by a principal axis of incidence and a principal axis of reflection of the reflective structure.

10. The head-up display device of claim 7, wherein the transflective mirror is movably disposed in the housing along a second predetermined direction, the second predetermined direction being any direction within an angle formed by a principal incident axis and a principal reflection axis of the transflective mirror.

11. The head-up display device according to claim 10, wherein the second predetermined direction is a bisector direction of the angle formed by the principal axis of incidence and the principal axis of reflection of the transflective mirror.

12. The heads-up display device of claim 1 wherein the image source is movably disposed within the housing.

13. The heads-up display device of claim 1 further comprising:

a shielding portion;

the light outlet of the shell is provided with a sealing piece, and the shielding part is used for shielding external light rays emitted to the sealing piece along a third preset direction.

14. The heads-up display device of claim 13 wherein the reflective structure extends at least partially outside the housing to form the curtain.

15. The heads-up display device of claim 1 wherein the image source comprises a light source, a backlight assembly, and an image generating element;

the backlight assembly is used for transmitting the light rays emitted by the light source;

the image generating element is used for converting the light rays transmitted by the backlight assembly into the first imaging light rays.

16. The heads-up display device of claim 15 wherein the backlight assembly includes a reflective light guide element, a direction control element, and a dispersion element;

the reflecting light guide element is used for collecting light rays emitted by the light source;

the direction control element is used for converging the light rays collected by the reflecting light guide assembly;

the diffusion element is used for diffusing the light rays converged by the direction control element at a preset angle.

17. The heads-up display device of claim 16 wherein the reflective light guide element comprises a hollow lamp cup;

the hollow lamp cup comprises a hollow shell surrounded by a reflecting wall, a light outlet opening of the hollow lamp cup faces the direction control element, the light source is arranged at one end, away from the light outlet opening, of the hollow lamp cup, and light emitted by the light source is reflected when entering the reflecting wall, so that the light reflected by the reflecting wall is emitted to the direction control element through the light outlet opening.

18. A motor vehicle, comprising: the head-up display device of any one of claims 1 to 17 and a projection device, wherein the projection device is configured to image the first imaging light exiting via the light exit.

19. The motor vehicle of claim 18, further comprising a sunglass for transmitting P-polarized light and blocking S-polarized light.

20. The motor vehicle of claim 19, further comprising a phase retarding element disposed between the light outlet and the projection device, the imaging light exiting through the light outlet being S-polarized light, the phase retarding element configured to convert the S-polarized light exiting through the light outlet into circularly polarized light or P-polarized light.

21. The vehicle of claim 19, wherein the projection device is provided with a P-polarized reflective film, and the image light emitted through the light outlet is P-polarized light.

22. The motor vehicle of claim 18, wherein the projection device is a windshield having a wedge membrane disposed therein.

23. The vehicle of claim 18, further comprising a selectively reflective film disposed on the projection device, the selectively reflective film configured to reflect the imaging light.

Images