CN114252993A

CN114252993A - Visual image display device, vehicle and main control system

Info

Publication number: CN114252993A
Application number: CN202011007528.3A
Authority: CN
Inventors: 吴慧军; 方涛; 徐俊峰
Original assignee: Futurus Technology Co Ltd
Current assignee: Futurus Technology Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2022-03-29

Abstract

The embodiment of the invention relates to the technical field of display, and discloses a visual image display device, a vehicle and a main control system. In the present invention, a visual image display device includes: the device comprises an image source, a first plane reflector, a reflecting assembly and a moving mechanism connected with the first plane reflector; image light generated by the image source is emitted to the first plane reflector; the first plane reflector reflects the image light to the reflecting component; the reflection assembly reflects the image light to an external imaging device so that the external imaging device can form a visual image; the moving mechanism controls the first plane mirror to move so as to adjust the imaging distance of the visual image. By adopting the embodiment, the user can be prevented from having the visual convergence adjustment conflict, and the use experience of the visual image display device is improved.

Description

Visual image display device, vehicle and main control system

Technical Field

The embodiment of the invention relates to the technical field of display, in particular to a visual image display device, a vehicle and a main control system.

Background

Visual image shows (head up display, "HUD") device is the optical design through the reflective, the light that sends the image source is finally projected imaging device, like the formation of image board, windshield etc., form the virtual image by this outside imaging device, make the driver not have and directly to watch this virtual image, thereby make the driver need not to bow the data that can look over the demonstration of panel board, avoid the driver to bow the danger of seeing the appearance that the panel board leads to driving in the process, can improve the factor of safety of driving, simultaneously also can bring better driving experience.

The inventors found that at least the following problems exist in the related art: the position of the visual image formed by the current visual image display device projected on the windshield is often different from the position focused by the eyes of the driver, for example, when the driver gazes at a distant road surface, the driver needs to adjust the visual image formed by the HUD from the distant road surface to the near road surface, so that the visual convergence adjustment conflict occurs, the driver is caused to have bad conditions such as fatigue and nausea, and the use experience of the visual image display device is seriously reduced.

Disclosure of Invention

The embodiment of the invention aims to provide a visual image display device, a vehicle and a master control system, which can avoid the conflict of convergence adjustment of vision of users and improve the use experience of the visual image display device.

To solve the above technical problem, an embodiment of the present invention provides a visual image display device including: the device comprises an image source, a first plane reflector, a reflecting assembly and a moving mechanism connected with the first plane reflector; image light generated by the image source is emitted to the first plane reflector; the first plane reflector reflects the image light to the reflecting component; the reflection assembly reflects the image light to an external imaging device so that the external imaging device can form a visual image; the moving mechanism controls the first plane mirror to move so as to adjust the imaging distance of the visual image.

Embodiments of the present invention also provide a vehicle including: the visual image display device and the external imaging device are provided.

The embodiment of the invention also provides a main control system, which is applied to the visual image display device or the vehicle; the method comprises the following steps: a control device and a collection device; the acquisition device is used for acquiring visual information of a driver; the control device is connected with the acquisition device and used for determining the designated direction and the designated distance according to the visual information and controlling the movement of the moving mechanism according to the designated direction and the designated distance.

Compared with the prior art, the embodiment of the invention has the advantages that image light rays emitted by an image source in the visual image display device are reflected to an external imaging device through the reflection of the first plane reflector and the reflection of the reflection assembly, so that a visual image is formed; this visual image display device has included moving mechanism, this moving mechanism is connected with first plane speculum, this moving mechanism can control this first plane speculum and remove, thereby can adjust this first plane speculum and the distance between the image source, and then can adjust the imaging distance of the visual image that this image source formed, make the visual image that the driver watched and the position of this driver's eyes focus match, thereby avoid the driver to appear the confliction of visual convergence regulation conflict, the use that has improved this visual image display device is experienced.

In addition, the moving mechanism drives the first plane mirror to move a specified distance along a specified direction. The moving mechanism is fixedly connected with the first plane reflecting mirror, so that the first plane reflecting mirror is driven to move when the moving mechanism moves; the moving mode is simple.

In addition, the specified directions are: the reflection main axis of the first plane reflector and the incidence main axis form any direction in an included angle. The first plane mirror moves in the first designated direction, ensuring the integrity of the visual image.

Further, the moving mechanism includes: a drive device, a gear and a rack; the first plane mirror is fixed on the rack, the driving device is in transmission connection with the gear, and the gear is meshed with the rack; when the driving device drives the gear to rotate, the gear drives the first plane mirror on the rack to move. The structure of the moving mechanism is provided, and the first plane mirror is driven to move when the moving mechanism moves through the matching of the gear and the rack.

Further, the moving mechanism includes: the device comprises a driving device, a slide rail and a slide block positioned on the slide rail; the first plane reflector is fixed on the sliding block, and the sliding block is in transmission connection with the driving device; the driving device drives the sliding block to move on the sliding rail so as to drive the first plane reflecting mirror fixed on the sliding block to move. The first plane mirror is driven to move by the movement of the sliding block on the sliding rail.

Further, the moving mechanism includes: a drive device, a conveyor belt and a gear combination with a plurality of gears; the first plane reflecting mirror is fixed on a conveyor belt, the conveyor belt is in transmission connection with a gear combination, and a driving device is connected with the gear combination; the driving device drives the gear combination to rotate so as to drive the conveying belt to move; the conveyor belt drives the first plane mirror to move when moving. The transmission of the transmission belt and the gear combination is connected, the driving device drives the gear combination to rotate, so that the moving mechanism is driven to move, and the transmission belt is simple in arrangement mode and beneficial to implementation.

In addition, the device also comprises a transflective mirror; the transflective mirror is positioned between the image source and the first plane reflector and transmits image light emitted by the image source to the first plane reflector; the first plane reflector reflects the image light transmitted by the transflective mirror to the transflective mirror; the image light reflected by the first plane reflector is reflected to the reflecting component by the transflective mirror. The transflective mirror is positioned between the image source and the first plane reflecting mirror, and the distance of image light transmitted by the image source can be increased through the transflective mirror, so that the imaging distance of the visual image is increased, and the visual convergence adjustment conflict is reduced.

In addition, still include: a first conversion element; the first conversion element is positioned between the transflective mirror and the first plane reflecting mirror; the light-transmitting mirror is a polarization light-transmitting mirror which is used for transmitting the image light with the first characteristic and reflecting the image light with the second characteristic; the first conversion element converts the image light rays with the first characteristic transmitted by the transflective mirror into image light rays with the second characteristic, the image light rays converted into the second characteristic are reflected to the first conversion element through the first plane reflector, the reflected image light rays converted into the second characteristic are converted into image light rays with the third characteristic through the first conversion element, and the image light rays converted into the third characteristic are reflected to the reflection assembly through the transflective mirror; wherein the first characteristic, the second characteristic and the third characteristic are all different. By the first conversion element, the reflection efficiency of the image light directed to the first plane mirror can be ensured.

In addition, the reflection assembly includes: a second planar mirror and a curved mirror; the second plane reflector reflects the image light to the curved reflector, and the curved reflector reflects the image light to an external imaging device; or the curved surface reflector reflects the image light to the second plane reflector, and the second plane reflector reflects the image light to an external imaging device. The reflecting assembly comprises a second plane reflecting mirror and a curved surface reflecting mirror, and the distance of image light transmission is increased through multiple reflection of the two reflecting mirrors.

In addition, still include: the shell is provided with a light outlet; the image source, the first plane reflector, the reflecting assembly and the moving mechanism are all positioned in the shell; image light rays emitted by the image source are reflected by the first plane reflector and the reflection assembly in sequence and then emitted from the light outlet. The arrangement of the shell can avoid the interference of external light to an image source.

In addition, the image source includes: a light source, a backlight assembly disposed adjacent to the light source, and an image light generating element disposed adjacent to the backlight assembly; the backlight assembly includes: the reflecting light guide element, the direction control element and the dispersion element are sequentially arranged along the direction of the light from the light source; the reflection light guide element controls the source light generated by the light source to propagate in the reflection light guide element and to be emitted into the direction control element from the light emitting surface of the reflection light guide element; the direction control element converges the incident source light; the diffusion element diffuses the source light converged by the direction control element according to a preset angle; the image light generating element converts the source light, which is diffused by the diffusing element, into image light. By the backlight assembly and the image light generating element, the utilization rate of source light emitted by the light source can be improved, and the power consumption of the visual image display device is reduced.

In addition, the reflective light guide element includes: the hollow shell comprises a first end part and a second end part which are oppositely arranged, the area of the first end part is smaller than that of the second end part, and the shell is in a pyramid shape or a paraboloid shape; the first end part is used for placing a light source, and the light-emitting surface of the second end part is used as the light-emitting surface of the shell. The inner surface of the reflection light guide element is provided with a reflection surface, and large-angle source light rays emitted by the light source are gathered after being reflected by the reflection surface, so that the utilization rate of the source light rays is improved.

In addition, the reflective light guide element includes: a solid transparent portion and a collimating portion, the solid transparent portion having a refractive index greater than 1; an accommodating cavity and a groove are sequentially arranged in the end part of the solid transparent part along the light emitting direction of the light source, the accommodating cavity is used for accommodating the light source and is positioned at one end far away from the light emitting surface of the solid transparent part, the opening of the groove is positioned on the light emitting surface of the solid transparent part, and a collimation part is arranged in the groove; or; the tip of solid transparent portion is provided with along the luminous direction of light source and holds the chamber, is provided with collimation portion holding the intracavity, and collimation portion keeps away from the one end of light source. The solid transparent part can refract source light rays emitted by the light source, and the collimation part calibrates the light rays, so that the utilization rate of the source light rays is improved.

In addition, the light exit department of casing is provided with the dust mask, and visual image display device still includes: the shading part is arranged at the light outlet of the shell and used for blocking outside light rays irradiating the dustproof film along a preset direction, and the preset direction is the irradiation direction of the outside light rays. The light-shading part is arranged at the light outlet, so that the phenomenon of glare caused by external light irradiating the dustproof film can be prevented, and the effect of watching visual images of a driving source is influenced.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural view of a visual image display apparatus according to a first embodiment of the present invention;

fig. 2 is a schematic configuration diagram of another visual image display apparatus provided according to a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a visual image display apparatus including a transflective lens according to a first embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another visual image display device including a transflective lens according to a first embodiment of the present invention;

FIG. 5 is a schematic view of a designated direction provided in accordance with a first embodiment of the present invention;

fig. 6 to 8 are schematic structural views of a moving mechanism provided according to a second embodiment of the present invention;

FIG. 9 is a schematic diagram of an image source according to a third embodiment of the present invention;

fig. 10 is a schematic structural view of a backlight assembly according to a third embodiment of the present invention;

FIGS. 11 and 12 are schematic views showing the structure of a reflective light guide element according to a third embodiment of the present invention;

FIGS. 13 and 14 are schematic views showing the structure of another reflective light guide element according to a third embodiment of the present invention;

FIG. 15 is a schematic configuration diagram of a visual image display apparatus according to a fourth embodiment of the present invention;

fig. 16 is a schematic structural view of a vehicle according to a fifth embodiment of the invention;

fig. 17 is a schematic view of the position of a second switching element in a fifth embodiment according to the present invention;

fig. 18 is a schematic structural diagram of a master control system according to a sixth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. 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 following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present invention, and the embodiments may be mutually incorporated and referred to without contradiction.

Current visual image display devices are generally mounted on vehicles, such as automobiles. The existing visual image display device forms images at a fixed distance, when a driver uses the visual image display device to observe displayed images, the driver needs to switch the sight lines between the displayed images and different real scenes, so that the visual convergence adjustment conflict occurs, and the use experience of the visual image display device is seriously reduced.

A first embodiment of the present invention relates to a visual image display device. The visual image display apparatus 1 may be configured as shown in fig. 1, and includes: the image source 10, the first plane mirror 20, the reflection assembly 30 and the moving mechanism 401 connected with the first plane mirror 20; the image light generated by the image source 10 is emitted to the first plane mirror 20; the first plane mirror 20 reflects the image light to the reflection assembly 30; the reflection assembly 30 emits the image light to the external imaging device 2, so that the external imaging device 2 forms a visual image; the moving mechanism 401 controls the first plane mirror 20 to move to adjust the imaging distance of the visual image.

Specifically, in order to reduce interference of external light or dust with the visual image display device 1, the visual image display device 1 may further include: a housing 50, the housing 50 having a light outlet 501; the image source 10, the first plane mirror 20, the reflection assembly 30 and the moving mechanism 401 are all located in the housing 50. The image light emitted from the image source 10 is emitted through the light outlet 501 of the housing 50, reflected by the external imaging device 2, and forms a visual image, and the driver can observe the visual image formed outside the external imaging device 2, and the specific structure of the visual image display device 1 is shown in fig. 1.

The visual image display apparatus 1 may be mounted on various vehicles, for example, automobiles, trains, airplanes, mail ships, and the like. In this example, the visual image display apparatus 1 is mounted in an automobile, and the external imaging device 2 may transmit and reflect light, for example, a windshield of the automobile. The housing 50 may be made of a light-shielding material to prevent external light from entering the visual image display apparatus 1 and interfering with the image source 10. The visual image display apparatus 1 may be disposed below the external display apparatus 2.

Image source 10 includes a device that emits image light, such as an LCD display, an LED display, or a DLP display.

In this example, the visual image display apparatus 1 may further include a transflective mirror 60, where the transflective mirror 60 may be configured to transmit a portion of the light and reflect a portion of the light; the transflective mirror 60 is located between the image source 10 and the first plane mirror 20, and the transflective mirror 60 transmits the image light emitted from the image source 10 to the first plane mirror 20. The first plane mirror 20 reflects the image light transmitted through the transreflective mirror 60 to the transreflective mirror 60; the transflective mirror 60 reflects the image light reflected by the first plane mirror 20 to the reflection assembly 30. The arrangement of the mirror 60 is shown in fig. 1.

Specifically, an angle is formed between the transflective mirror 60 and the image source 10, so that the image light emitted from the image source 10 is transmitted to the first plane mirror 20 through the transflective mirror 60; the first plane mirror 20 reflects the transmitted image light to the transflective mirror 60, and then reflects the image light to the reflective assembly 30 through the transflective mirror 60. The image light is reflected from the light outlet 501 to the external imaging device by the reflection member 30.

In one example, the reflective assembly 30 includes: a second plane mirror 301 and a curved mirror 302; the second flat mirror 301 reflects the image light to the curved mirror 302, and the curved mirror 302 directs the image light to an external imaging device, as shown in fig. 2. Alternatively, the curved mirror 302 reflects the image light to the second flat mirror 301, and the second flat mirror 301 emits the image light to an external imaging device, as shown in fig. 1.

Specifically, the positions of the second plane mirror 301 and the curved surface mirror 302 can be adjusted according to actual needs. For example, as shown in fig. 1, image light emitted from the image source 10 is emitted to the transflective mirror 60, the transmitted image light is emitted to the first planar reflector 20, the image light is reflected by the first planar reflector 20 and then emitted to the transflective mirror 60 again, the image light is reflected by the transflective mirror 60, the reflected image light is emitted to the curved reflector 302, and then reflected to the second planar reflector 301 and then emitted to the external imaging device from the light outlet, as shown in fig. 1.

The positions of the second planar mirror 301 and the curved mirror 302 can also be as shown in fig. 2. The light emitted from the image source 10 is transmitted by the mirror 60 and then emitted, the transmitted image light is emitted to the first plane mirror 20, and after being reflected, the image light passes through the mirror 60 again, is reflected by the mirror 60 to the second plane mirror 301, and is reflected by the second plane mirror 301 to the curved mirror 302 and then is emitted to the external imaging device 2 from the light outlet 501, as shown in fig. 2.

Note that, the visual image display device 1 further includes a first conversion element 70; the transflective lens 60 is a polarization transflective lens for transmitting the image light of the first characteristic and reflecting the image light of the second characteristic; the first conversion element 70 converts the image light with the first characteristic transmitted through the transflective mirror 60 into the image light with the second characteristic, the image light converted into the second characteristic is reflected to the first conversion element 70 through the first plane reflective mirror 20, the reflected image light converted into the second characteristic is converted into the image light with the third characteristic through the first conversion element 70, and the image light converted into the third characteristic is reflected to the reflection assembly 30 through the transflective mirror 60; wherein the first characteristic, the second characteristic and the third characteristic are all different.

Specifically, the first conversion element 70 includes a wave plate, which may be disposed on the surface of the first plane mirror 20 close to the transflective mirror or between the first plane mirror 20 and the transflective mirror 60, for example, the first conversion element is 1/4 wave plate. The first characteristic may be a vertical polarization characteristic; the second characteristic may be a circular polarization characteristic; the third characteristic may be a horizontal polarization characteristic.

As shown in fig. 3, the image light emitted from the image source 10 includes image light with vertical polarization, which is transmitted by the transflective mirror 60 and then converted into circularly polarized light by passing through 1/4 wave plates, the circularly polarized light is reflected by the first planar mirror 20 and then converted into image light with horizontal polarization by passing through 1/4 wave plates, and then reflected by the transflective mirror 60, and then reflected by the curved surface mirror 302 and the second planar mirror 301 in sequence and then emitted.

As shown in fig. 4, the image light emitted from the image source 10 includes image light with vertical polarization, which is transmitted through the transflective mirror 60 and then converted into circularly polarized light through the 1/4 wave plate, the circularly polarized light is reflected by the first plane mirror 20 and then converted into image light with horizontal polarization through the 1/4 wave plate, and the image light is reflected by the transflective mirror 60, and then reflected by the second plane mirror 301 and the curved surface mirror 302 in sequence and then emitted.

It should be noted that, the image light emitted from the image source 10 is reflected and converted many times, and the distance of the image light propagation is increased, so that the object distance imaged by the display device is large when the head is raised, and according to the curved surface imaging rule, the image distance is increased under the condition that the object distance is large, that is, the imaging distance of the visual image is large, and the driver can observe the visual image at a far position, and the remote visual image can play a role in eliminating parallax.

In one example, where the external imaging device 2 is a windshield, the image source 10 is reflected by the reflective assembly 30 to form a visual image by the external imaging device 2 that is at or near the focal plane of the windshield. According to the curved surface imaging rule, the visual image formed by the image source 10 sequentially passing through the reflection assembly 30 and the windshield can be at a far distance or even at an infinite distance, and is suitable for an enhanced visual image display device.

In one example, the moving mechanism 401 is fixedly connected to the first plane mirror 20; the moving mechanism 401 moves the first plane mirror 20 by a prescribed distance in a prescribed direction.

Specifically, the specified directions are: any direction within an included angle formed by the main reflection axis and the main incidence axis of the first plane mirror 20, for example, may be a bisector direction between the main reflection axis and the main incidence axis, for example, a dotted line in fig. 5 is a bisector between the main reflection axis and the main incidence axis, that is, a normal direction, and a solid line light is an image light emitted by the image source 10, as shown in fig. 5, the specified direction may be any direction within an included angle α formed by the main reflection axis and the main incidence axis on the first plane mirror 20 in fig. 5; in this example, the designated direction may be an angular bisector of the principal axis of reflection and the principal axis of incidence of the first plane mirror 20, i.e., the dashed line is the designated direction.

It is understood that the moving mechanism 401 may also move the first plane mirror 20 according to the designated direction and the designated distance input by the driver or the engineer.

Compared with the prior art, in the visual image display device of the present invention, the image light emitted from the image source 10 is reflected by the first plane mirror 20 and the reflection assembly 30, and is emitted to the external imaging device 2, so as to form a visual image; this visual image display device 1 has included moving mechanism 401, this moving mechanism 401 is connected with first plane mirror 20, this moving mechanism 401 can control this first plane mirror 20 and remove, thereby can adjust the distance between this first plane mirror 20 and the image source 10, and then can adjust the formation of image distance of the visual image that this image source 10 formed, make the visual image that the driver watched and the position of this driver's eyes focus match, thereby avoid the driver to appear the confliction regulation conflict of vision, the use that has improved this visual image display device is experienced.

A second embodiment of the present invention relates to a visual image display device. The second embodiment is a specific description of the moving mechanism in the first embodiment. The moving mechanism 401 can have various structures, and 3 moving mechanisms 401 are listed in this example, and will be described one by one below.

In one example, the moving mechanism 401 includes: a drive device 4011 (not shown in fig. 6), a gear 4012, and a rack 4013; the first plane mirror 20 is fixed on a rack 4013, a driving device 4011 is in transmission connection with a gear 4012, and the gear 4012 is meshed with the rack 4013; when the driving device 4011 drives the gear 4012 to rotate, the gear 4012 drives the first plane mirror 20 on the rack 4013 to move; the specific structure is shown in fig. 6.

Specifically, a fixing bracket may be mounted on the rack 4013, and the fixing bracket is configured to fix the first plane mirror 20 on the rack 4013, when the driving device drives the gear to rotate, the rack 4013 is engaged to translate to drive the fixing bracket to translate, so as to drive the first plane mirror 20 to move, where a dashed Y-line in fig. 6 represents the fixing bracket.

In another example, the moving mechanism 401 includes: a drive arrangement 4011 (not shown in fig. 7), a slide rail 4014, and a slide block 4015 located on the slide rail 4014; the first plane mirror 20 is fixed on a slide block 4015, and the slide block 4015 is in transmission connection with a driving device 4011; the driving device 4011 drives the slide block 4015 to move on the slide rail 4014, so as to drive the first plane mirror 20 fixed on the slide block 4015 to move. The structure of the moving mechanism may be as shown in fig. 7.

Specifically, the first plane mirror 20 is fixed on a slide block 4015, and a fixing clip may be mounted on the slide block 4015, and the first plane mirror 20 is fixed on the slide block 4015 by the fixing clip. The driving device 4011 drives the slide block 4015 to move on the slide rail 4014, thereby moving the first plane mirror 20.

In another example, the moving mechanism 401 includes: a drive 4011 (not shown in fig. 8), a conveyor belt 4016, and a gear combination 4017 having a plurality of gears; the first plane mirror 20 is fixed on a conveyor belt 4016, the conveyor belt 4016 is in transmission connection with a gear combination 4017, and a driving device 4011 is connected with the gear combination 4017; the driving device 4011 drives the gear combination 4017 to rotate so as to drive the conveying belt 4016 to move; the conveyor 4016 moves to move the first plane mirror 20. The structure of the moving mechanism may be as shown in fig. 8.

Specifically, the gear combination 4017 includes a plurality of gears, a conveyor belt 4016 is fixed on the gear combination 4017, and the first plane mirror 20 may be fixed on the conveyor belt 4016. The driving device 4011 drives the gear assembly 4017 to rotate, so as to drive the conveyor belt 4016 to move, and further drive the first plane mirror 20 to move.

After the moving mechanism 401 is connected to the first plane mirror 20, the moving mechanism 401 cannot block the image light from between the image source 10 and the first plane mirror 20.

A third embodiment of the present invention relates to a visual image display device, and this embodiment is a detailed description of the image source 10 in the first embodiment, in which the image source 10 includes a light source 1011, a backlight unit 1012 provided adjacent to the light source 1011, and an image light generating element 1013 provided adjacent to the backlight unit 1012, and the configuration of the image source 10 is as shown in fig. 9.

Each component is described separately below.

Specifically, the Light source 1011 includes at least one electroluminescent element, and 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), a Cold Light source (Cold LED Light, CLL), an Electroluminescence (EL), an electron Emission (FED), a Quantum Dot Light source (QD), or the like. For example, the light source 1011 may be a white LED comprising RGB mixed light.

In one example, the image light generating element 1013 comprises a liquid crystal panel that can convert source light emitted by the light source 1011 into image light.

The structure of the backlight assembly 1012 is shown in fig. 10, and includes: a reflecting light guide element 1012-1, a direction control element 1012-2 and a diffusion element 1012-3 which are arranged in sequence along the light emitting direction of the light source 1011; the reflective light guide element 1012-1 controls the source light generated by the light source 1011 to propagate in the reflective light guide element 1012-1, and the source light is emitted from the light emitting surface of the reflective light guide element 1012-1 into the direction control element 1012-2; the direction control element 1012-2 converges the incident source light; the diffusion element 1012-3 diffuses the source light converged by the direction control element 1012-2 according to a preset angle; the image light generating element 1013 converts the source light diffused by the diffusing element into image light.

Specifically, a reflective light guide element 1012-1, a direction control element 1012-2, and a diffusion element 1012-3 are sequentially disposed between the light source 1011 and the image light generating element 1013. The reflective light guide element 1012-1 is disposed in the light emitting direction of the light source 1011, and the source light emitted from the light source 1011 propagates in the reflective light guide element 1012-1 and is emitted to the direction control element 1012-2.

As shown in fig. 11, the reflective light guide element 1012-1 includes: a hollow housing comprising a first end a1 and a second end a2 arranged oppositely, the first end a1 having an area smaller than the second end a2, wherein the housing has a pyramidal or parabolic shape; the first end a1 is used for placing the light source 1011, and the light-emitting surface of the second end a2 is used as the light-emitting surface of the reflective light-guiding element 1012-1; the inner surface of the housing is provided with a reflective surface to condense source light generated by the light source 1011.

Specifically, the housing of the reflective light guide element 1012-1 may be in a triangular pyramid shape, a quadrangular pyramid shape, or a parabolic shape, wherein the cross section of the quadrangular pyramid shape may be a rectangle, a square, a trapezoid, or a parallelogram; as shown in fig. 11 and 12, the housing is exemplified by a housing in the shape of a rectangular pyramid, a first end a1 and a second end a2 of which are oppositely arranged, and an area of the first end a1 is smaller than an area of the second end a2, wherein a dotted circle in fig. 11 represents a virtual image of the light source 1011.

The housing of the reflective light directing element 1012-1 may also be parabolic in shape, as shown in fig. 13 and 14. Reflective light directing element 1012-1 includes: a solid transparent part C1 and a collimation part C2, the refractive index of the solid transparent part C1 is more than 1; as shown in fig. 13, an end of the solid transparent portion C1 is provided with a receiving cavity C3 along the light emitting direction of the light source 1011, and a collimating portion C2 is provided in the receiving cavity C3, and an end of the collimating portion C2 away from the light source 1011. Alternatively, as shown in fig. 14, an accommodating cavity C3 and a groove C4 are sequentially disposed in the end of the solid transparent portion C1 along the light emitting direction of the light source 1011, the accommodating cavity C3 is used for accommodating the light source 1011, the opening of the groove C4 is located on the light emitting surface of the solid transparent portion C1, and the collimating portion C2 is disposed in the groove C4.

Specifically, the reflective light guide element 1012-1 includes a solid transparent portion C1, the solid transparent portion C1 includes an end portion where the light source 1011 is disposed, the refractive index of the solid transparent portion C1 is greater than 1, a part of the light emitted from the light source 1011 is totally reflected on the internal reflection surface of the solid transparent portion C1 and emitted, and another part of the light emitted from the light source 1011 is transmitted and emitted inside the solid transparent portion C1. The end of the solid transparent part C1, where the light source 1011 is located, is provided with a containing cavity C3, and one surface of the containing cavity C3, which is close to the light exit surface, is provided with a collimating part C2, which can collimate the source light, as shown in fig. 13. Alternatively, as shown in fig. 14, the end of the solid transparent part C1 where the light source 1011 is disposed is provided with a containing cavity C3, the light exit surface of the solid transparent part C1 is provided with a groove C4 extending toward the end, and the bottom surface of the groove C4 near the end is provided with a collimation part C2 capable of adjusting the source light to be parallel.

The direction control element 1012-3 may be: a convex lens, a fresnel lens, or any combination thereof. Such as a convex lens, a fresnel lens, or a combination of lenses, for example, and the direction control element 1012-3 is illustrated in fig. 10 as a convex lens, for example. It will be appreciated that the predetermined range may be a point, such as the focal point of a convex lens, or a smaller area.

The image source 10 provided in this embodiment can improve the utilization rate of the source light emitted from the light source 1011 and reduce the power consumption of the visual image display device through the backlight assembly 1012.

A fourth embodiment of the present invention relates to a visual image display device, which is a further improvement of the first to third embodiments, and is mainly characterized in that: a dustproof film M1 is arranged at the light outlet 501 of the shell 50; a light shielding portion 90 is added to the visual image display device 1 as shown in fig. 15.

In one example, the visual image display device 1 may further include a dust-proof film M1 provided at the light exit 501 of the housing 50: the light blocking portion 90 is disposed at the light outlet 501 of the housing 50, and the light blocking portion 90 is used for blocking the external light irradiated onto the dustproof film M1 along a preset direction, where the preset direction is the irradiation direction of the external light.

Specifically, a dustproof film M1 is provided at the light exit 501 of the visual image display device 1, the dustproof film M1 is mainly used to prevent dust and impurities from entering the interior of the housing 50, and the dustproof film M1 is a transparent film material; when sunlight irradiates on the dustproof film M1, strong glare occurs on the surface of the dustproof film M1, the light shielding portion 90 is disposed at the light outlet 501, and the light exit surface of the light shielding portion 90 is disposed as an inclined surface for preventing glare from entering human eyes, as shown in fig. 15.

The dust-proof film M1 prevents dust from entering the visual image display device 1, and the light-shielding portion 90 effectively prevents glare from entering human eyes.

A fifth embodiment of the present invention relates to a vehicle having a structure shown in fig. 16, including: an external imaging device 2 and the visual image display device 1 according to any one of the first to fifth embodiments.

In one example, the visual image display apparatus 1 further includes: the second conversion element 80 is located between the light exit 501 and the external imaging device 1. The second conversion element 80 is configured to convert the S-polarized image light emitted through the light outlet 501 into a circularly polarized image light or a P-polarized image light.

The second conversion element 80 is disposed at a position shown in fig. 17, and fig. 17 shows only the housing 50 and the second conversion element 80, and the second conversion element 80 is disposed at a position of the light outlet 501. The second conversion element 80 may be a phase delay element.

Specifically, in practical applications, the external imaging device 2 is a windshield, and the reflectivity of the windshield to S-polarized light is usually high, and the image light emitted from the image source 10 of the visual image display device 1 is generally S-polarized light, for example, the light source 1011 in the image source 10 may be an LCD emitting S-polarized light. If the viewer wears sunglasses that filter S-polarized light, the viewer will not see a stereoscopic image if the viewer wears sunglasses.

In one example, the second conversion element 80 may be an 1/4 wave plate that converts S-polarized light to circularly polarized light, producing a P-polarized light component.

In another example, the image source 10 may be adjusted to emit P-polarized light, and it is understood that a P-polarized reflective film may be disposed on the windshield in a matching manner due to the low reflectivity of the windshield to the P-polarized light.

It is worth mentioning that the second conversion element 80 is arranged to enable the observer to normally view the stereoscopic image even wearing sunglasses, thereby improving the use experience of the visual image display device 1.

The external imaging device 2 may transmit and reflect light, and may be, for example, a windshield of an automobile. In order to solve the ghost image problem, a wedge-shaped film is arranged in the external imaging device 2, or; the external imaging device 2 is provided with a reflective element on the surface close to the viewer for reflecting the image light emitted by the image source 10, the reflective element comprising any one of: a selective reflection film, a wave plate, or a P-polarized light reflection film.

Specifically, a wedge-shaped film may be added in the interlayer of the windshield, which may eliminate double images. The selective reflection film may be further added on the inner surface of the windshield, and the selective reflection film only reflects the image light emitted from the image source 10, for example, the white light LED including RGB mixed light, and the emitted image light includes light of three wave bands of RGB, so that the selective reflection film only reflects the RGB light and transmits other light, and the image light is not reflected secondarily on the inner surface of the outer side of the windshield, thereby eliminating ghost images.

In another example, an 1/4 wave plate or a 1/2 wave plate may be additionally disposed on the inner surface of the windshield to cooperate with the image source 10 capable of emitting S-polarized light, the S-polarized image light is transmitted through the windshield, the transmitted light is converted into P-polarized light or circularly polarized light through the wave plate, and the reflectivity of the inner surface on the outer side of the imaging device is low, thereby eliminating double images.

In another example, a P-polarized light reflecting film is additionally arranged on the inner surface of the windshield and is matched with the image source 10 capable of emitting P-polarized light, after the P-polarized image light is reflected by the P-polarized light reflecting film, the glass has higher transmittance to the P-polarized light, so that the transmitted P-polarized light can also transmit out of the external imaging device 2, and the reflectivity of the inner surface of the outer side of the external imaging device 2 is very low, thereby eliminating double images.

A sixth embodiment of the present invention relates to a host system applied to the above-described visual image display apparatus 1 or the above-described vehicle; the master control system comprises: a control device 4021 and an acquisition device 4022. A block diagram of the master control system 402 is shown in fig. 18.

Specifically, the master control system 402 includes: a control device 4021 and a collection device 4022; the acquisition device 4022 is used for acquiring visual information of an observer; the control device 4021 is connected to the acquisition device 4022, and is configured to determine a designated direction and a designated distance according to the visual information, and control the movement mechanism 401 to move according to the designated direction and the designated distance. The control device 4021 and the acquisition device 4022 may be connected by wire or wirelessly, and the control device 4021 is connected to the moving mechanism 401. The acquisition device 4022 may include an image acquisition subunit, an image detection processing unit, and an illumination subunit. The illumination subunit is used for emitting infrared light and other light rays which are invisible to human eyes, the light rays are reflected at pupils of human eyes, the image acquisition subunit captures information generated by reflection of the through holes, and the information generated by reflection of the through holes comprises pupil center position, pupil size, cornea reflection information, iris center position, iris size and the like; the image detection processing unit accurately estimates visual data of eyes by using an algorithm, wherein the visual data comprises fixation time, observation direction, binocular focusing depth and the like, and the visual information in the example can comprise data and information generated by through hole reflection; the collected and processed related visual information is transmitted to the control device 4021. It is understood that the acquisition device 4022 may further include an eye tracking device for tracking the human eye to improve the accuracy of the visual acquisition.

The control module 4021 receives the visual information acquired by the acquisition device 4022, processes the visual information, obtains the focal length position of the eyes of the observer, calculates the designated direction and the designated distance of the movement mechanism 401 by using the parameters of the optical reflection system, and generates a movement instruction according to the designated direction and the designated distance to instruct the movement mechanism 401 to move.

It is worth mentioning that the imaging distance of the visual image is adjusted according to the collected visual information of the human eyes, so that the imaging position of the visual image is consistent with the position focused by the human eyes, the visual convergence conflict is avoided, and the visual image display device can be applied to any person and the use scene of the visual image display device is improved by matching the master control system with the visual image display device.

In the embodiment, the visual information of the observer is acquired through the master control system, so that the designated direction and the designated distance of the movement of the moving mechanism can be determined, and the adjustment is more flexible; the manual adjustment is not needed, and the automation degree is high.

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 of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out 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 practice.

Claims

1. A visual image display apparatus, comprising: the device comprises an image source, a first plane reflector, a reflecting assembly and a moving mechanism connected with the first plane reflector;

the image light generated by the image source is emitted to the first plane reflector;

the first plane reflector reflects the image light to the reflecting component;

the reflection assembly reflects the image light to an external imaging device so that the external imaging device can form a visual image;

the moving mechanism controls the first plane mirror to move so as to adjust the imaging distance of the visual image.

2. A visual image display apparatus according to claim 1 wherein said movement mechanism moves said first planar mirror a specified distance in a specified direction.

3. A visual image display apparatus according to claim 2, wherein the specified directions are: and the reflection main shaft of the first plane reflector and the incidence main shaft form any direction in an included angle.

4. A visual image display apparatus according to claim 2 or 3, wherein the moving mechanism comprises: a drive device, a gear and a rack;

the first plane mirror is fixed on the rack, the driving device is in transmission connection with the gear, and the gear is meshed with the rack;

when the driving device drives the gear to rotate, the gear drives the first plane mirror on the rack to move.

5. A visual image display apparatus according to any one of claims 2 to 3, wherein the moving mechanism comprises: the device comprises a driving device, a slide rail and a slide block positioned on the slide rail;

the first plane mirror is fixed on the sliding block, and the sliding block is in transmission connection with the driving device;

the driving device drives the sliding block to move on the sliding rail so as to drive the first plane mirror fixed on the sliding block to move.

6. A visual image display apparatus according to any one of claims 2 to 3, wherein the moving mechanism comprises: a drive device, a conveyor belt and a gear combination with a plurality of gears;

the first plane reflecting mirror is fixed on the conveying belt, the conveying belt is in transmission connection with the gear combination, and the driving device is connected with the gear combination;

the driving device drives the gear combination to rotate so as to drive the conveying belt to move;

the conveyor belt drives the first plane mirror to move when moving.

7. A visual image display apparatus according to any one of claims 1 to 3, further comprising a transflective mirror;

the transflective mirror is positioned between the image source and the first plane reflector, and transmits image light emitted by the image source to the first plane reflector;

the first plane reflector reflects the image light rays transmitted by the transflective mirror to the transflective mirror;

the transflective mirror reflects the image light reflected by the first plane mirror to the reflection assembly.

8. A visual image display apparatus according to claim 7, further comprising: a first conversion element;

the first conversion element is positioned between the transflective mirror and the first planar mirror;

the light source comprises a light source, a light transmission lens, a light reflection lens, a first light source, a second light source, a first light source and a second light source, wherein the light transmission lens is a polarization light transmission lens and is used for transmitting image light with a first characteristic and reflecting image light with a second characteristic;

the first conversion element converts the image light rays with the first characteristic transmitted by the transflective mirror into image light rays with the second characteristic, the image light rays converted into the second characteristic are reflected to the first conversion element by the first plane reflector, the reflected image light rays converted into the second characteristic are converted into image light rays with the third characteristic by the first conversion element, and the image light rays converted into the third characteristic are reflected to the reflection assembly by the transflective mirror;

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

9. A visual image display apparatus according to any one of claims 1 to 3, wherein the reflective assembly comprises: a second planar mirror and a curved mirror;

the second plane reflector reflects the image light to the curved reflector, and the curved reflector reflects the image light to an external imaging device; or,

the curved reflector reflects the image light to the second planar reflector, and the second planar reflector reflects the image light to an external imaging device.

10. A visual image display apparatus according to any one of claims 1 to 3, further comprising: the light source comprises a shell, a light source and a light source, wherein the shell is provided with a light outlet;

the image source, the first plane mirror, the reflecting assembly and the moving mechanism are all positioned in the shell;

image light rays emitted by the image source sequentially pass through the first plane reflector and the reflection assembly and then are emitted from the light outlet.

11. A visual image display apparatus according to claim 1, wherein the image source comprises: a light source, a backlight assembly disposed adjacent to the light source, and an image light generating element disposed adjacent to the backlight assembly;

the backlight assembly includes: the reflecting light guide element, the direction control element and the diffusion element are sequentially arranged along the direction of the light from the light source;

the reflection light guide element controls the source light generated by the light source to spread in the reflection light guide element and to be emitted into the direction control element from the light emitting surface of the reflection light guide element;

the direction control element converges the incident source light;

the diffusion element diffuses the source light rays converged by the direction control element according to a preset angle;

the image light ray generation element converts the source light rays diffused by the diffusion element into the image light rays.

12. A visual image display apparatus according to claim 11, wherein the reflective light directing element comprises: a hollow housing comprising a first end and a second end disposed opposite to each other, the first end having an area smaller than that of the second end, wherein the housing has a pyramidal or parabolic shape;

the first end part is used for placing the light source, and the light-emitting surface of the second end part is used as the light-emitting surface of the shell;

the inner surface of the shell is provided with a reflecting surface, and the source light emitted by the light source is reflected when being incident to the reflecting surface, so that the source light reflected by the reflecting surface is emitted to the direction control element.

13. A visual image display apparatus according to claim 11, wherein the reflective light directing element comprises: a solid transparent portion and a collimating portion, the solid transparent portion having a refractive index greater than 1;

an accommodating cavity and a groove are sequentially arranged in the end part of the solid transparent part along the light emitting direction of the light source, the accommodating cavity is used for accommodating the light source and is positioned at one end far away from the light emitting surface of the solid transparent part, the opening of the groove is positioned on the light emitting surface of the solid transparent part, and the collimation part is arranged in the groove; or;

the end of the solid transparent part is provided with the accommodating cavity along the light emitting direction of the light source, the accommodating cavity is internally provided with a collimation part, and the collimation part is far away from one end of the light source.

14. A visual image display apparatus according to claim 11 wherein a dust-proof film is provided at the light exit of the housing, the visual image display apparatus further comprising: the dustproof film comprises a shell, a light outlet, a shading part and a light blocking part, wherein the shading part is arranged at the light outlet of the shell and used for blocking external light rays irradiated on the dustproof film along a preset direction, and the preset direction is the irradiation direction of the external light rays.

15. A vehicle characterized by comprising the visual image display apparatus according to any one of claims 1 to 14 and an external imaging apparatus.

16. The vehicle of claim 15, further comprising: a second conversion element located between the light exit and the external imaging device;

the second conversion element is configured to convert the S-polarized image light emitted through the light exit into the circularly polarized image light or the P-polarized image light.

17. The vehicle of claim 16, wherein the external imaging device is a windshield of the vehicle having a wedge membrane disposed therein.

18. A master control system, characterized by being applied to the visual image display apparatus according to any one of claims 1 to 14 or the vehicle according to any one of claims 15 to 17; the method comprises the following steps: a control device and a collection device;

the acquisition device is used for acquiring visual information of a driver;

the control device is connected with the acquisition device and used for determining the designated direction and the designated distance according to the visual information and controlling the movement of the moving mechanism according to the designated direction and the designated distance.

19. The master control system of claim 18, wherein the visual information comprises any combination of: the gaze time, viewing direction, or binocular focus of the driver may be depth information.