WO2023138076A1 - Appareil d'affichage et véhicule - Google Patents

Appareil d'affichage et véhicule Download PDF

Info

Publication number
WO2023138076A1
WO2023138076A1 PCT/CN2022/118595 CN2022118595W WO2023138076A1 WO 2023138076 A1 WO2023138076 A1 WO 2023138076A1 CN 2022118595 W CN2022118595 W CN 2022118595W WO 2023138076 A1 WO2023138076 A1 WO 2023138076A1
Authority
WO
WIPO (PCT)
Prior art keywords
display device
imaging light
light
imaging
vehicle
Prior art date
Application number
PCT/CN2022/118595
Other languages
English (en)
Chinese (zh)
Inventor
赵晗
方元戎
赵晴
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023138076A1 publication Critical patent/WO2023138076A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0183—Adaptation to parameters characterising the motion of the vehicle

Definitions

  • the present application relates to the field of image display, in particular to a display device and a vehicle.
  • the head-up display is a device that projects instrument information (such as speed) and navigation information to the front of the driver's field of vision.
  • instrument information such as speed
  • navigation information to the front of the driver's field of vision.
  • the driver can see the instrument information and navigation information in front of the field of vision without looking down at the instrument panel or the central control display under the steering wheel. This can improve the braking response time in emergency situations and improve driving safety.
  • the imaging light emitted by the image source is projected onto the windshield of the car after multiple reflections, and the windshield further reflects the imaging light to the driver's eyes.
  • Existing head-up display devices are usually bulky (12-20 liters), cannot be installed on cars with less space, and have poor adaptability.
  • an embodiment of the present application provides a display device and a vehicle.
  • the display device occupies a small volume and can be installed on a vehicle with a small space.
  • the display device may include: a housing, a reflective assembly located inside the housing, and an image generating unit located outside the housing.
  • the image generating unit is used for generating imaging light containing image information, and projecting the imaging light to the reflective assembly inside the casing, and the imaging light is incident on the reflective assembly after passing through the casing; the reflective assembly is used for reflecting the received imaging light to the outside of the casing.
  • the image generating unit is located outside the casing, and thus does not need to occupy a space inside the casing.
  • the position of the image generation unit can be flexibly adjusted according to the needs, and the space on the IP platform can be fully utilized, which reduces the space occupied by the display device on the vehicle as a whole, and facilitates the installation of the display device on vehicles with a small space, and has better adaptability.
  • IP Instrument Panel
  • the casing can play the role of dustproofing and accommodating the reflection assembly, and the casing can also be called a casing or a dustproof cover.
  • the imaging light projected by the image generating unit is transmitted from the first surface of the casing to the reflective assembly, and the imaging light reflected by the reflective assembly is transmitted from the first surface, that is, the imaging light is incident and transmitted from the same surface of the casing.
  • the imaging light projected by the image generating unit is transmitted from the second surface of the casing to the reflective assembly, and the imaging light reflected by the reflective assembly is transmitted from the third surface of the casing, that is, the imaging light is incident and transmitted from different surfaces of the casing.
  • the relative position of the image generating unit and the casing can be adjusted according to needs, and the flexibility is good.
  • the image generating unit includes a light source, an imaging module and a projection lens
  • the light source is used to output a light beam to the image module
  • the imaging module generates imaging light containing image information according to the light beam
  • the projection lens is used to project the imaging light to the reflective assembly.
  • the reflective component may include one or more reflective elements, for example, a curved mirror or a combination of a curved mirror and a reflective mirror.
  • the imaging light projected by the image generating unit is incident to the mirror, and the mirror is used to reflect the incident imaging light to the curved mirror, and the curved mirror is used to reflect the received imaging light to the outside of the housing.
  • the reflector may be a plane reflector.
  • the imaging light projected by the image generation unit is P polarized light, S polarized light, circular polarized light or elliptical polarized light
  • the P polarized light, S polarized light, circular polarized light or elliptically polarized light can be reflected to the windshield by the reflective component.
  • the imaging light emitted from the casing to the outside of the casing is S-polarized light. Furthermore, S polarized light can be incident on the windshield. Compared with other polarized light, S-polarized light can be better reflected by the windshield to the human eye, thereby improving the display effect, such as enhancing display brightness and resolution.
  • the display device further includes a first polarization conversion device, the first polarization conversion device is located on the optical path between the image generation unit and the reflective assembly, and is used to change the polarization direction of the imaging light projected by the image generation unit.
  • the first polarizing component can also change the polarization direction of the imaging light reflected by the reflecting component.
  • the first polarization converter converts the polarization direction of the imaging light projected by the image generating unit and the imaging light reflected by the reflective component, so that the polarization direction of the imaging light emitted by the display device can be converted according to needs (such as the requirements of the windshield), and the flexibility is better.
  • the imaging light projected by the image generating unit is P-polarized light
  • the first polarization converter converts the P-polarized light into circularly polarized light
  • the circularly polarized light is reflected by the reflective component and passes through the first polarization converter
  • the circularly polarized light is converted into S-polarized light and emitted from the housing.
  • the first polarization converter is a 1/4 wave plate, a 1/8 wave plate or a 1/2 wave plate.
  • the position of the first polarization converter can be flexibly set as required, and it can be located at any one or more places on the light exit side of the image generating unit, the first surface, the second surface of the casing, and the reflection surface of the reflection assembly (mirror and curved mirror).
  • the 1/4 wave plate and the 1/8 wave plate may be located inside or outside the first surface of the housing.
  • the 1/4 wave plate and the 1/8 wave plate may be located inside or outside the second surface of the housing.
  • the display device further includes a second polarization conversion device, the second polarization conversion device is located on the propagation path of the imaging light reflected by the reflection component, and is used for changing the polarization direction of the imaging light reflected from the reflection component.
  • the second polarization converter is a 1/4 wave plate or a 1/8 wave plate.
  • the positions of the 1/4 wave plate and the 1/8 wave plate can be flexibly set as required, and they can be located inside or outside the reflecting surface of the mirror, the reflecting surface of the curved mirror, or the first surface of the housing.
  • the second polarization converter may be used in conjunction with the first polarization converter, for example, the first polarizing device is disposed on the second surface of the housing, and the second polarizing device is disposed on the first surface of the housing.
  • the second polarization converter and the first polarization converter can be the same, that is, one polarization device can realize the respective functions of the second polarization converter and the first polarization converter, for example, simultaneously change the polarization direction of the imaging light projected by the image generation unit and change the polarization direction of the imaging light reflected by the reflective component.
  • the display device may further include a diffusion screen, and the diffusion screen is located at the light output side of the image generation unit, and is used for diffusely reflecting the imaging light incident on the image generation unit.
  • the light after diffuse reflection can be incident on the reflective component.
  • the display device further includes a polarizer located at the light output side of the image generating unit, and the polarizer transmits S-polarized light or P-polarized light.
  • the reflector is located within the focal length of the curved mirror, so that the image reflected by the reflector can be magnified and displayed by the curved mirror.
  • the first polarization conversion device is pasted on the first surface, the second surface, and the reflective surface of the reflective component (reflector and curved mirror) of the casing, thereby reducing the volume.
  • the first polarization conversion device is attached to the reflective surface of the plane mirror. Compared with pasting on a curved mirror, the first polarization conversion device has a higher degree of adhesion to the plane mirror, and the display effect is better.
  • the curved mirror is a multi-focal curved mirror or a free-form mirror.
  • the present application provides a vehicle, which includes the display device as described in the first aspect.
  • the display device is installed in the dashboard of the vehicle.
  • the vehicle further includes a windshield, the imaging light emitted by the display device is incident on the windshield, and the windshield reflects it to human eyes.
  • the imaging light emitted by the display device is S polarized light.
  • the windshield is also provided with a P-reflective S-film, which can reflect the S-polarized light emitted by the display device to human eyes, and filter out the stray light (P-polarized light) emitted by the display device, thereby improving the display effect.
  • a P-reflective S-film which can reflect the S-polarized light emitted by the display device to human eyes, and filter out the stray light (P-polarized light) emitted by the display device, thereby improving the display effect.
  • FIG. 1 is a schematic diagram of a usage scenario of a display device provided by an embodiment of the present application
  • Fig. 2 is a schematic diagram of a display device provided in an embodiment of the present application installed on a vehicle;
  • Fig. 3 is a schematic diagram of another display device provided in the embodiment of the present application installed on a vehicle;
  • Fig. 4 is a schematic diagram of another display device provided in the embodiment of the present application installed on a vehicle;
  • Fig. 5 is a schematic diagram of another display device provided in the embodiment of the present application installed on a vehicle;
  • Fig. 6 is a schematic diagram of another display device provided in the embodiment of the present application installed on a vehicle;
  • Fig. 7 is a schematic diagram of another display device provided in the embodiment of the present application installed on a vehicle;
  • Fig. 8 is a schematic diagram of another display device provided in the embodiment of the present application installed on a vehicle;
  • FIG. 9 is a schematic diagram of another display device provided in the embodiment of the present application installed on a vehicle.
  • FIG. 10 is a schematic structural diagram of an image generation unit in a display device provided by an embodiment of the present application.
  • FIG. 11 is a schematic circuit diagram of a display device disclosed in an embodiment of the present application.
  • Fig. 12 is a functional schematic diagram of a vehicle provided by an embodiment of the present application.
  • the present application provides a display device, electronic equipment and vehicles.
  • the display device can be used in many scenes, such as the car scene, and the display device in this application can be used as a HUD.
  • the head-up display device can project navigation information, instrument information, etc. in the driver's front field of vision, preventing the driver from looking down at the information, thereby affecting driving safety.
  • the image projected by the HUD is reflected by the windshield (windshield), it forms a virtual image outside the vehicle.
  • These virtual images can be superimposed on the real environment outside the vehicle, so that the driver can obtain the visual effect of Augmented Reality (AR), thereby realizing functions such as AR navigation, adaptive cruise, and lane departure warning.
  • AR Augmented Reality
  • the type of HUD includes but not limited to windshield (Windshield, W)-HUD, augmented reality head-up display (AR-HUD) and the like.
  • the display device may also be referred to as a display system or a virtual image display device.
  • Units or modules included in the display device may be referred to as components or mechanisms.
  • FIG. 2 is a schematic diagram of a display device provided in an embodiment of the present application installed on a vehicle.
  • the display device includes a housing 110 , a picture generation unit (Picture Generation Unit, PGU) 120 and a reflection assembly located in the housing 110 .
  • the PGU 120 may be referred to as an image source, which is located outside the housing 110.
  • the reflective assembly in the housing 110 includes a curved mirror 113 in this embodiment.
  • the case 110 may include a transparent first surface 111 .
  • the PGU 120 generates imaging light containing image information, and projects the imaging light to the curved mirror 113, and the projected imaging light is incident on the curved mirror 113 after being transmitted through the first surface 111 of the casing 110.
  • the curved mirror 113 reflects the received imaging light to the outside of the casing 110 .
  • the imaging light reflected by the curved mirror 113 is transmitted from the first surface 111 of the housing 110 , for example, to the windshield, and the windshield further reflects the imaging light to human eyes, and human eyes can see virtual images through the windshield.
  • the concave surface of the curved mirror 113 reflects the imaging light, the image generated by the PGU 120 can be magnified by the curved mirror 113, and the user can see the magnified virtual image.
  • the PGU 120 is located outside the casing 110 , and thus does not need to occupy the space inside the casing 110 .
  • the position of the PGU120 can be flexibly adjusted according to the needs. For example, placing the PGU 120 at the position of the shading plate (as shown in Figure 2) can replace the function of the shading plate, thereby reducing the space occupied by the display device on the IP platform of the vehicle, allowing the display device to be installed on vehicles with less space and better adaptability.
  • the shading plate can block the outside sunlight from entering the display device (commonly known as sunlight pouring into the display device).
  • the display device of this embodiment does not need a shading plate, and the PGU 120 can block the sunlight and reduce the cost.
  • the imaging light projected by the PGU 120 may be P-polarized light, S-polarized light or circularly polarized light.
  • the P-polarized light, S-polarized light or circularly polarized light is emitted from the first surface 111 of the casing 110 and incident to the windshield.
  • the windshield can reflect the P-polarized light, S-polarized light or circularly polarized light to the human eye.
  • the display device provided in this embodiment may also include a 1/4 wave plate (or phase retarder) 112, which is located on the reflective surface of the curved mirror 113, which can change the polarization direction of the imaging light projected by the PGU 120, and can also change the polarization direction of the imaging light reflected by the curved mirror 113.
  • a 1/4 wave plate (or phase retarder) 112 which is located on the reflective surface of the curved mirror 113, which can change the polarization direction of the imaging light projected by the PGU 120, and can also change the polarization direction of the imaging light reflected by the curved mirror 113.
  • the imaging light projected by the PGU 120 is P-polarized light (shown by double arrows), and the imaging light is converted into circularly polarized light or elliptically polarized light after passing through the 1/4 wave plate 112 for the first time. block.
  • the position of the curved mirror 113 can be adjusted so that the incident angle of the S-polarized light transmitted from the first surface 111 of the housing 110 to the windshield is close to or equal to the Brewster angle, so that most of the S-polarized light is reflected by the windshield to the human eye, improving the clarity and brightness of the image, and obtaining better visual effects.
  • FIG. 3 is a schematic diagram of another display device provided in an embodiment of the present application installed on a vehicle.
  • the structure of the embodiment shown in FIG. 3 is similar to that of the embodiment in FIG. 2, the main difference being that the 1/4 wave plate 212 is located on the first surface 111 of the casing 110, and the 1/4 wave plate 212 can change the polarization direction of the imaging light projected by the PGU 120, and can also change the polarization direction of the imaging light reflected by the curved mirror 113.
  • the imaging light projected by the PGU 120 is P-polarized light (shown by a double arrow), and the imaging light is converted into circularly polarized light or elliptically polarized light (shown by an ellipse) after passing through the 1/4 wave plate 212 for the first time. After the circularly polarized light or elliptically polarized light is reflected by the curved mirror 113, it passes through the 1/4 wave plate 212 again. into the windshield.
  • the 1/4 wave plate 212 can be located outside the first surface 111 or inside the first surface 111 (as shown in FIG. 3 ).
  • FIG. 4 is a schematic diagram of another display device provided in an embodiment of the present application installed on a vehicle.
  • the structure of the embodiment shown in FIG. 4 is similar to that of the embodiment in FIG. 2 , the main difference being that the imaging light projected by the PGU 120 is transmitted from the second surface 114 of the casing 110 to the curved mirror 113, and the imaging light reflected by the curved mirror 113 is transmitted from the first surface 111 to the outside of the casing 110.
  • both the first surface 111 and the second surface 114 may be transparent surfaces.
  • the 1/4 wave plate 112 is also located on the reflective surface of the curved mirror 113, and the position of the curved mirror 113 can be adjusted according to the position of the PGU 120, so that the imaging light reflected by the curved mirror 113 can be emitted through the first surface 111.
  • the PGU 120 is disposed on the side of the casing 110, and the space on the side of the casing 110 can be utilized in combination with the overall layout of the IP station of the vehicle, and has good adaptability.
  • the optical path of the imaging light emitted by the PGU 120 entering the curved mirror 113 and the optical path of the imaging light reflected by the curved mirror 113 do not intersect, which can reduce the crosstalk between imaging lights and improve the display effect.
  • FIG. 5 is a schematic diagram of another display device provided in an embodiment of the present application installed on a vehicle.
  • the structure of the embodiment shown in FIG. 5 is similar to that of the embodiment in FIG. 4 , the main difference is that the 1/4 wave plate 213 is located on the second surface 114 of the casing 110, which can change the polarization direction of the imaging light projected by the PGU 120.
  • the 1/4 wave plate 212 is located on the first surface 111 of the casing 110 , which can change the polarization direction of the imaging light reflected by the curved mirror 113 .
  • the imaging light projected by the PGU 120 is P-polarized light (shown by a double arrow), and the imaging light is converted into circularly polarized light or elliptically polarized light (shown by an ellipse) after passing through the 1/4 wave plate 213.
  • the circularly polarized light or elliptically polarized light is reflected by the curved mirror 113, it passes through the 1/4 wave plate 212, and the imaging light emitted from the 1/4 wave plate 212 is S-polarized light (shown by a dot), and the S-polarized light is transmitted from the first surface 111 of the housing 110 and incident to the windshield.
  • the optical path of the imaging light emitted by the PGU 120 entering the curved mirror 113 and the optical path of the imaging light reflected by the curved mirror 113 do not intersect. Therefore, two different 1/4 wave plates 213 and 212 can be set according to different optical paths to improve the conversion efficiency between linearly polarized light and circularly polarized light. .
  • the 1/4 wave plate 213 can be located inside the second surface 114 (as shown in FIG. 5 ), or can be located outside the second surface 114 . Since the second surface 114 is a plane, the 1/4 wave plate 213 can be better attached to the second surface 114, and the installation is more convenient. In addition, the 1/4 wave plate 213 can also be located on the light output side of the PGU 120, that is, the imaging light emitted by the PGU 120 as a whole is circularly polarized light or elliptically polarized light, and the circularly polarized light or elliptically polarized light is incident on the curved mirror 113.
  • the 1/4 wave plate can also be replaced by a 1/8 wave plate, and the effect of two 1/8 wave plates is similar to that of one 1/4 wave plate.
  • a 1/8 wave plate may be provided on the reflection surfaces of the first surface 111 , the second surface 114 and the curved mirror 113 .
  • FIG. 6 is a schematic diagram of another display device provided in an embodiment of the present application installed on a vehicle.
  • the structure of the embodiment shown in FIG. 6 is similar to that of the embodiment in FIG. 5 , the main difference being that the imaging light emitted by the PGU 120 is circularly polarized light or elliptically polarized light, the 1/4 wave plate 213 is located on the second surface 114 of the housing 110, and the 1/4 wave plate is not provided on the first surface 111.
  • the PGU 120 projects circularly polarized light or elliptically polarized light (shown as an ellipse), and the circularly polarized light or elliptically polarized light is converted into linearly polarized light after passing through the 1/4 wave plate 213, such as S polarized light. After being reflected by the curved mirror 113, the S polarized light is transmitted from the first surface 111 of the housing 110, and enters the windshield.
  • FIG. 7 is a schematic diagram of another display device provided in an embodiment of the present application installed on a vehicle.
  • the display device includes a housing 310, a PGU 320 and a reflective assembly located in the housing 310.
  • the PGU 320 is located outside the casing 110
  • the reflective components in the casing 310 include a curved mirror 313 and a reflective mirror 312 in this embodiment.
  • the housing 310 may include a transparent first surface 311 .
  • the PGU 320 generates imaging light including image information, and projects the imaging light to the mirror 312 , and the projected imaging light is transmitted through the first surface 311 of the housing 310 and then enters the mirror 312 .
  • the reflective mirror 312 reflects the received imaging light to the curved mirror 313
  • the curved mirror 313 reflects the received imaging light to the outside of the casing 310 .
  • the imaging light reflected by the curved mirror 313 is transmitted from the first surface 311 , for example, to the windshield, and the windshield further reflects the imaging light to the human eyes, and the human eyes can see the virtual image through the windshield.
  • the concave surface of the curved mirror 313 reflects the imaging light, the image generated by the PGU 320 can be magnified by the curved mirror 313, so that the user can see the magnified virtual image.
  • the PGU 320 is located outside the casing 310 , and thus does not need to occupy the space inside the casing 310 .
  • the position of the PGU320 can be adjusted as required, for example, it can be placed at the position of the shading plate (as shown in Figure 7) to replace the function of the shading plate, thereby reducing the space occupied by the display device on the IP platform of the vehicle, so that the display device can be installed on vehicles with less space and has better adaptability.
  • the imaging light projected by the PGU 320 may be P-polarized light, S-polarized light or circularly polarized light, and the P-polarized light, S-polarized light or circularly polarized light is reflected by the plane mirror 312 and the curved mirror 313 and then emitted from the first surface 111 of the casing 310 and incident on the windshield.
  • the display device provided in this embodiment may further include a 1/4 wave plate 315, which is located on the reflective surface of the mirror 312, which can change the polarization direction of the imaging light projected by the PGU 320, and can also change the polarization direction of the imaging light reflected by the mirror 312.
  • the imaging light projected by the PGU320 is P-polarized light (shown by double arrows), and the imaging light passes through the 1/4 wave plate 315 for the first time and is converted into circularly polarized light or elliptically polarized light.
  • the circularly polarized light or elliptically polarized light After the circularly polarized light or elliptically polarized light is reflected by the mirror 312, it passes through the 1/4 wave plate 315 again, and the imaging light transmitted from the 1/4 wave plate 315 is S-polarized light (shown by the dot), and the S-polarized light is incident on the curved mirror 313, and the curved mirror 313 reflects the S-polarized light to the first surface 311 of the housing 310 , and is incident on the windshield after being transmitted through the first surface 311 .
  • the position of the curved mirror 313 or the reflector 312 can be adjusted so that the incident angle of the S-polarized light transmitted from the first surface 311 of the casing 310 and incident on the windshield is close to or equal to the Brewster angle, so that most of the S-polarized light is reflected to the human eye to obtain a better visual effect.
  • FIG. 8 is a schematic diagram of another display device provided in an embodiment of the present application installed on a vehicle.
  • the structure of the embodiment shown in FIG. 8 is similar to that of the embodiment in FIG. 7, the main difference being that the 1/4 wave plate 316 is located on the reflective surface of the curved mirror 313, and the 1/4 wave plate 316 can change the polarization direction of the imaging light reflected by the mirror 312, and can also change the polarization direction of the imaging light reflected by the curved mirror 313.
  • the imaging light projected by the PGU 320 is P-polarized light (shown by double arrows).
  • the imaging light is transmitted through the first surface 311 to the mirror 312, and is reflected by the mirror 312 to the curved mirror 313.
  • the imaging light first passes through the 1/4 wave plate 316 and then is converted into circularly polarized light or elliptically polarized light. It is S polarized light (shown by a dot), and the S polarized light is incident on the windshield after being transmitted through the first surface 311 .
  • FIG. 9 is a schematic diagram of another display device provided in an embodiment of the present application installed on a vehicle.
  • the structure of the embodiment shown in FIG. 9 is similar to that of the embodiment in FIG. 7 , the main difference being that the 1/4 wave plate 317 is located on the first surface 311 of the casing 310, which can change the polarization direction of the imaging light projected by the PGU 320, and can also change the polarization direction of the imaging light reflected by the curved mirror 313.
  • the imaging light projected by the PGU 320 is P-polarized light (shown by double arrows), and the imaging light is converted into circularly polarized light or elliptically polarized light (shown by an ellipse) after passing through the 1/4 wave plate 317 for the first time.
  • the imaging light is transmitted from the first surface 311 of the casing 310 and is incident on the windshield.
  • the 1/4 wave plate 317 can be located on the outside of the first surface 311 or on the inside of the first surface 311 (as shown in FIG. 9 ).
  • the 1/4 wave plate 317 can be located on the outside of the first surface 311 or on the inside of the first surface 311 (as shown in FIG. 9 ).
  • FIG. 10 is a schematic structural diagram of an image generating unit in a display device provided by an embodiment of the present application.
  • the image generating unit (may be referred to as an optical machine) includes a light source 501 , an imaging module 502 and a projection lens 503 , and the image generating unit can be used in the aforementioned display device or independently.
  • the light source 501 in this embodiment outputs white light (primary color light) to the imaging module 502 .
  • the imaging module 502 can use white light to generate a source image and output imaging light.
  • the projection lens 503 is used to project the imaging light outward, which may be a short-focus lens.
  • the imaging module 502 in this embodiment may be a Liquid Crystal On Silicon (LCOS) display, an Organic Light-Emitting Diode (OLED) display, a Liquid Crystal Display (LCD), a Digital Light Processing (DLP) display, or a Micro-Electro-Mechanical Systems (MEMS) display.
  • LCOS Liquid Crystal On Silicon
  • OLED Organic Light-Emitting Diode
  • LCD Liquid Crystal Display
  • DLP Digital Light Processing
  • MEMS Micro-Electro-Mechanical Systems
  • the light emitting surface of the projection lens 503 may be provided with components such as polarizers, 1/4 wave plates, 1/8 wave plates, and 1/2 wave plates.
  • the imaging light projected by the projection lens 503 may be linearly polarized light, circularly polarized light or elliptically polarized light, which is convenient for subsequent components of the image generating unit to process.
  • FIG. 11 is a schematic circuit diagram of a display device provided by an embodiment of the present application.
  • the circuits in the display device mainly include a processor 1001, an internal memory 1002, an external memory interface 1003, an audio module 1004, a video module 1005, a power module 1006, a wireless communication module 1007, an I/O interface 1008, a video interface 1009, a controller area network (Controller Area Network, CAN) transceiver 1010, a display circuit 1028, and an imaging device 1029.
  • the processor 1001 and its surrounding components such as the memory 1002, the CAN transceiver 1010, the audio module 1004, the video module 1005, the power module 1006, the wireless communication module 1007, the I/O interface 1008, the video interface 1009, the touch unit 1010, and the display circuit 1028 can be connected through a bus.
  • the processor 1001 may be called a front-end processor.
  • circuit diagrams shown in the embodiments of the present application do not constitute specific limitations on the display device.
  • the display device may include more or fewer components than shown in the illustrations, or combine certain components, or separate certain components, or arrange different components.
  • the illustrated components can be realized in hardware, software or a combination of software and hardware.
  • the processor 1001 includes one or more processing units, for example: the processor 1001 may include an application processor (Application Processor, AP), a modem processor, a graphics processor (Graphics Processing Unit, GPU), an image signal processor (Image Signal Processor, ISP), a controller, a video codec, a digital signal processor (Digital Signal Processor, DSP), a baseband processor, and/or a neural network processor (Neural- Network Processing Unit, NPU), etc.
  • an application processor Application Processor, AP
  • modem processor a graphics processor
  • ISP Image Signal Processor
  • ISP Image Signal Processor
  • controller a video codec
  • DSP Digital Signal Processor
  • NPU neural network processor
  • different processing units may be independent devices, or may be integrated in one or more processors.
  • a memory may also be provided in the processor 1001 for storing instructions and data. For example, store the operating system of the display device, AR Creator software package, etc.
  • the memory in processor 1001 is a cache memory.
  • the memory may hold instructions or data that the processor 1001 has just used or recycled. If the processor 1001 needs to use the instruction or data again, it can be called directly from the memory. Repeated access is avoided, and the waiting time of the processor 1001 is reduced, thereby improving the efficiency of the system.
  • the display device may further include a plurality of input/output (Input/Output, I/O) interfaces 1008 connected to the processor 1001 .
  • the interface 1008 may include, but not limited to, an integrated circuit (Inter-Integrated Circuit, I2C) interface, an integrated circuit built-in audio (Inter-Integrated Circuit Sound, I2S) interface, a pulse code modulation (Pulse Code Modulation, PCM) interface, a universal asynchronous transceiver (Universal Asynchronous Receiver/Transmitter, UART) interface, a mobile industry processor interface (Mobile Industry Processor) Interface, MIPI), General-Purpose Input/Output (GPIO) interface, Subscriber Identity Module (SIM) interface, and/or Universal Serial Bus (Universal Serial Bus, USB) interface, etc.
  • I2C Inter-Integrated Circuit
  • I2S integrated circuit built-in audio
  • PCM pulse code modulation
  • PCM pulse code modulation
  • UART Universal Asynchronous Receiver/Transmitter
  • MIPI Mobile Industry Processor
  • the above-mentioned I/O interface 1008 can be connected to devices such as a mouse, a touch screen, a keyboard, a camera, a speaker/speaker, and a microphone, and can also be connected to physical buttons on a display device (such as volume keys, brightness adjustment keys, power-on/off keys, etc.).
  • Internal memory 1002 may be used to store computer-executable program code, which includes instructions.
  • the memory 1002 may include an area for storing programs and an area for storing data.
  • the stored program area can store an operating system, at least one application program required by a function (such as a call function, a time setting function, an AR function, etc.) and the like.
  • the storage data area can store data created during the use of the display device (such as phonebook, world time, etc.) and the like.
  • the internal memory 1002 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (Universal Flash Storage, UFS) and the like.
  • the processor 1001 executes various functional applications and data processing of the display device by executing instructions stored in the internal memory 1002 and/or instructions stored in the memory provided in the processor 1001 .
  • the external memory interface 1003 can be used to connect an external memory (such as a Micro SD card), and the external memory can store data or program instructions as required, and the processor 1001 can perform operations such as reading and writing these data or program execution through the external memory interface 1003.
  • an external memory such as a Micro SD card
  • the processor 1001 can perform operations such as reading and writing these data or program execution through the external memory interface 1003.
  • the audio module 1004 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signal.
  • the audio module 1004 can also be used for encoding and decoding audio signals, such as playing or recording.
  • the audio module 1004 can be set in the processor 1001, or some functional modules of the audio module 1004 can be set in the processor 1001.
  • the display device may implement audio functions through the audio module 1004 and the application processor. Such as music playback, calls, etc.
  • Video interface 1009 can receive input audio and video, which can specifically be High Definition Multimedia Interface (High Definition Multimedia Interface, HDMI), Digital Visual Interface (Digital Visual Interface, DVI), Video Graphics Array (Video Graphics Array, VGA), Display Port (Displayport, DP), Low Voltage Differential Signaling (Low Voltage Differential Signaling, LVDS) interface, flat panel display connection (FPD -Link, Flat Panel Display Link) interface, etc.
  • the video interface 1009 can also output video externally.
  • the display device receives video data sent by the navigation system, receives video data sent by the domain controller, or receives video data sent by the AR Creator through the video interface.
  • the video module 1005 can decode the video input by the video interface 1009, for example, perform H.264 decoding.
  • the video module can also encode the video captured by the display device, for example, perform H.264 encoding on the video captured by the external camera.
  • the processor 1001 may also decode the video input from the video interface 1009, and then output the decoded image signal to the display circuit.
  • the above-mentioned display device also includes a CAN transceiver 1010, and the CAN transceiver 1010 can be connected to the CAN bus (CAN BUS) of the car.
  • CAN BUS CAN bus
  • the display device can communicate with the car entertainment system (music, radio, video module), vehicle status system, etc.
  • the user can activate the car music playing function by operating the display device.
  • the vehicle status system can send vehicle status information (vehicle doors, safety belts, etc.) to the display device for display.
  • the display circuit 1010 and the imaging device 1011 jointly realize the function of displaying images.
  • the display circuit 1010 receives the image signal output by the processor 1001, processes the image signal and then inputs it into the imaging device 1011 for imaging.
  • the display circuit 1010 can also control the image displayed by the imaging device 1011 .
  • control parameters such as display brightness or contrast.
  • the display circuit 1010 may include a driving circuit, an image control circuit and the like.
  • the imaging device 1011 is used for modulating the light beam input by the light source according to the input image signal, so as to generate a visible image.
  • the imaging device 1011 may be a liquid crystal on silicon panel, a liquid crystal display panel or a digital micromirror device.
  • the video interface 1009 can receive input video data (or referred to as a video source), and the video module 1005 performs decoding and/or digital processing to output an image signal to the display circuit 1010, and the display circuit 1010 drives the imaging device 1011 to image the light beam emitted by the light source according to the input image signal, thereby generating a visible image (emitting imaging light).
  • input video data or referred to as a video source
  • the video module 1005 performs decoding and/or digital processing to output an image signal to the display circuit 1010
  • the display circuit 1010 drives the imaging device 1011 to image the light beam emitted by the light source according to the input image signal, thereby generating a visible image (emitting imaging light).
  • the power module 1006 is used to provide power for the processor 1001 and the light source according to the input power (such as direct current).
  • the power module 1006 may include a rechargeable battery, and the rechargeable battery may provide power for the processor 1001 and the light source.
  • the light emitted by the light source can be transmitted to the imaging device 1029 for imaging, thereby forming an image light signal (imaging light).
  • the above-mentioned power supply module 1006 can be connected to a power supply module (such as a power battery) of a car, and the power supply module of the car supplies power to the power supply module 1006 of the display device.
  • a power supply module such as a power battery
  • the wireless communication module 1007 can enable the display device to perform wireless communication with the outside world, which can provide wireless local area network (Wireless Local Area Networks, WLAN) (such as wireless fidelity (Wireless Fidelity, Wi-Fi) network), Bluetooth (Bluetooth, BT), global navigation satellite system (Global Navigation Satellite System, GNSS), frequency modulation (Frequency Modulation, FM), short-range wireless communication technology (Near Field Communication, NFC), infrared technology (Infrared, IR) and other wireless communication solutions.
  • the wireless communication module 1007 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 1007 receives electromagnetic waves via the antenna, frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 1001 .
  • the wireless communication module 1007 can also receive the signal to be sent from the processor 1001, frequency-modulate it, amplify it, and convert it into electromagnetic wave and radiate it through the antenna.
  • the video data decoded by the video module 1005 can also be received wirelessly through the wireless communication module 1007 or read from the internal memory 1002 or an external memory.
  • FIG. 12 is a functional schematic diagram of a vehicle provided by an embodiment of the present application.
  • a vehicle may include various subsystems, such as a sensor system 21 shown in the figure, a control system 22, one or more peripheral devices 23 (one is shown as an example), a power supply 24, a computer system 25, and a display system 26, which may communicate with each other.
  • the display system 22 may include the display device provided in the embodiment of the present application.
  • the display system 22 in this embodiment may also include components other than the display device, such as a windshield, which can reflect the imaging light emitted by the display device to human eyes.
  • the vehicle may also include other functional systems, such as an engine system providing power for the vehicle, a cockpit, etc., which are not limited in this application.
  • the sensor system 21 may include several detection devices, which can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to certain rules.
  • these detection devices may include a global positioning system (Global Positioning System, GPS), a vehicle speed sensor, an inertial measurement unit (Inertial Measurement Unit, IMU), a radar unit, a laser rangefinder, a camera device, a wheel speed sensor, a steering sensor, a gear sensor, or other components for automatic detection, etc., and the present application is not limited thereto.
  • the control system 22 may include several elements, such as the illustrated steering unit, braking unit, lighting system, automatic driving system, map navigation system, network time synchronization system and obstacle avoidance system.
  • the control system 22 can receive information (such as vehicle speed, vehicle distance, etc.) sent by the sensor system 21 to realize functions such as automatic driving and map navigation.
  • control system 14 may also include elements such as an accelerator controller and an engine controller for controlling the driving speed of the vehicle, which are not limited in this application.
  • Peripherals 23 may include several elements such as a communication system, a touch screen, a user interface, a microphone, and speakers, among others.
  • the communication system is used to realize the network communication between the vehicle and other devices except the vehicle.
  • the communication system can use wireless communication technology or wired communication technology to realize network communication between vehicles and other devices.
  • the wired communication technology may refer to communication between the vehicle and other devices through network cables or optical fibers.
  • Power source 24 represents a system that provides electrical power or energy to the vehicle, which may include, but is not limited to, a rechargeable lithium or lead-acid battery, or the like. In practical applications, one or more battery components in the power supply are used to provide electric energy or energy for starting the vehicle, and the type and material of the power supply are not limited in this application.
  • Computer system 25 may include one or more processors 2501 (one processor is shown as an example) and memory 2502 (also referred to as a storage device).
  • processors 2501 one processor is shown as an example
  • memory 2502 also referred to as a storage device
  • the memory 2502 is also inside the computer system 25, or outside the computer system 25, for example, as a buffer in a vehicle, which is not limited in this application.
  • the processor 2501 may include one or more general-purpose processors, such as a graphics processing unit (graphic processing unit, GPU).
  • the processor 2501 can be used to execute related programs stored in the memory 2502 or instructions corresponding to the programs, so as to realize corresponding functions of the vehicle.
  • the memory 2502 can include a volatile memory (volatile memory), such as RAM; the memory can also include a non-volatile memory (non-vlatile memory), such as ROM, flash memory (flash memory), HDD or solid state disk SSD; the memory 2502 can also include a combination of the above-mentioned types of memory.
  • the memory 2502 can be used to store a set of program codes or instructions corresponding to the program codes, so that the processor 2501 can call the program codes or instructions stored in the memory 2502 to realize corresponding functions of the vehicle.
  • a set of program codes for vehicle control can be stored in the memory 2502, and the processor 2501 calls the program codes to control the safe driving of the vehicle. How to realize the safe driving of the vehicle will be described in detail below in this application.
  • the memory 2502 can also store information such as road maps, driving routes, and sensor data.
  • the computer system 25 can combine other components in the vehicle functional framework diagram, such as sensors in the sensor system, GPS, etc., to realize related functions of the vehicle.
  • the computer system 25 can control the driving direction or driving speed of the vehicle based on the data input from the sensor system 21 , which is not limited in this application.
  • the display system 26 can display image information, such as displaying navigation information, playing video and so on.
  • image information such as displaying navigation information, playing video and so on.
  • the four subsystems shown in this embodiment, the sensor system 21 , the control system 22 , the computer system 25 and the display system 26 are only examples and do not constitute limitations.
  • vehicles can combine several components in the vehicle according to different functions, so as to obtain subsystems with corresponding different functions.
  • the vehicle may include more or less subsystems or elements, which is not limited in this application.
  • the vehicles in the embodiments of the present application may be known vehicles such as automobiles, airplanes, ships, and rockets, and may also be new vehicles that will appear in the future.
  • the vehicle may be an electric vehicle, a fuel vehicle or a hybrid vehicle, for example, a pure electric vehicle, an extended-range electric vehicle, a hybrid electric vehicle, a fuel cell vehicle, a new energy vehicle, etc., which are not specifically limited in this application.
  • the electronic equipment in the embodiment of the present application includes equipment installed with a display device, which may include the above-mentioned vehicles, and may also be used as medical equipment, office entertainment equipment, or industrial control equipment, which is not limited in this embodiment.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instrument Panels (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un appareil d'affichage, qui comprend un boîtier (110), un ensemble de réflexion (113) situé à l'intérieur du boîtier (110), et une unité de génération d'image (120) située à l'extérieur du boîtier (110). L'unité de génération d'image (120) est utilisée pour générer une lumière d'imagerie contenant des informations d'image, et projeter la lumière d'imagerie vers l'ensemble de réflexion (113) dans le boîtier (110). La lumière d'imagerie est transmise au boîtier (110), et est ensuite incidente sur l'ensemble de réflexion (113). L'ensemble de réflexion (113) est utilisé pour réfléchir la lumière d'imagerie reçue vers l'extérieur du boîtier (110). Dans l'appareil d'affichage, l'unité de génération d'image (120) est située à l'extérieur du boîtier (110), de telle sorte que l'espace à l'intérieur du boîtier (110) n'a pas besoin d'être occupé. Lorsque l'appareil d'affichage est monté sur un tableau de bord d'un véhicule, la position de l'unité de génération d'image (120) peut être ajustée de manière flexible selon les besoins. L'espace sur le tableau de bord peut être complètement utilisé, et l'espace occupé par l'appareil d'affichage sur le véhicule est globalement réduit, ce qui facilite le montage de l'appareil d'affichage sur un véhicule ayant relativement peu d'espace.
PCT/CN2022/118595 2022-01-21 2022-09-14 Appareil d'affichage et véhicule WO2023138076A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210074512.7A CN116500784A (zh) 2022-01-21 2022-01-21 显示装置以及交通工具
CN202210074512.7 2022-01-21

Publications (1)

Publication Number Publication Date
WO2023138076A1 true WO2023138076A1 (fr) 2023-07-27

Family

ID=84777513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/118595 WO2023138076A1 (fr) 2022-01-21 2022-09-14 Appareil d'affichage et véhicule

Country Status (2)

Country Link
CN (2) CN115561906A (fr)
WO (1) WO2023138076A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108459415A (zh) * 2018-03-28 2018-08-28 京东方科技集团股份有限公司 一种平视显示器、平视显示方法以及车辆
CN108710208A (zh) * 2018-08-01 2018-10-26 张家港康得新光电材料有限公司 一种抬头显示系统及汽车
CN108761802A (zh) * 2017-08-25 2018-11-06 深圳京龙睿信科技有限公司 一种裸眼3d-hud显示装置
CN108919496A (zh) * 2018-08-08 2018-11-30 京东方科技集团股份有限公司 防太阳辐射的低功耗hud系统
DE102018104899A1 (de) * 2018-03-05 2019-09-05 Valeo Schalter Und Sensoren Gmbh Head-up-Display für ein Kraftfahrzeug und Verfahren zum Herstellen einer Abdeckung für ein Head-up-Display
CN110989173A (zh) * 2019-12-27 2020-04-10 厦门天马微电子有限公司 一种显示系统
CN111948810A (zh) * 2019-05-17 2020-11-17 未来（北京）黑科技有限公司 一种抬头显示装置
WO2021175608A1 (fr) * 2020-03-06 2021-09-10 Bayerische Motoren Werke Aktiengesellschaft Agencement pour la suppression de réflexion dans un système d'affichage de pare-brise, et système d'affichage de pare-brise
CN113820867A (zh) * 2021-10-15 2021-12-21 深圳前海智云谷科技有限公司 基于汽车挡风玻璃的空间复用的抬头显示器成像光路结构

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004126226A (ja) * 2002-10-02 2004-04-22 Denso Corp ヘッドアップディスプレイ
JP6381364B2 (ja) * 2014-08-22 2018-08-29 カルソニックカンセイ株式会社 ヘッドアップディスプレイ装置
US10241241B2 (en) * 2014-10-10 2019-03-26 Nippon Kayaku Kabushiki Kaisha Light reflecting film, and light controlling film, optical film, functional glass and head-up display including the light reflecting film
CN205139463U (zh) * 2015-10-22 2016-04-06 惠州市华阳多媒体电子有限公司 一种分离式抬头显示器
DE112016005488B4 (de) * 2015-12-01 2021-11-25 Panasonic Intellectual Property Management Co., Ltd. Head-Up-Display und mit Head-Up-Display ausgestattetes mobiles Objekt
JP6604287B2 (ja) * 2016-08-05 2019-11-13 株式会社デンソー ヘッドアップディスプレイ装置
CN111356945B (zh) * 2017-11-06 2022-07-15 日本宝来科技有限公司 偏光元件以及配备该偏光元件的平视显示装置
CN108490613B (zh) * 2018-03-28 2020-01-10 京东方科技集团股份有限公司 一种抬头显示装置及其控制方法、车辆
CN109375373A (zh) * 2018-12-03 2019-02-22 延锋伟世通电子科技（上海）有限公司 分离式激光车载抬头显示器结构及显示方法
US20210364792A1 (en) * 2020-05-25 2021-11-25 Samsung Electronics Co., Ltd. System of virtual image projectiion on screen with effect of eliminating influence of solar radiation
CN213240671U (zh) * 2020-08-06 2021-05-18 未来（北京）黑科技有限公司 抬头显示设备、抬头显示系统和交通设备

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108761802A (zh) * 2017-08-25 2018-11-06 深圳京龙睿信科技有限公司 一种裸眼3d-hud显示装置
DE102018104899A1 (de) * 2018-03-05 2019-09-05 Valeo Schalter Und Sensoren Gmbh Head-up-Display für ein Kraftfahrzeug und Verfahren zum Herstellen einer Abdeckung für ein Head-up-Display
CN108459415A (zh) * 2018-03-28 2018-08-28 京东方科技集团股份有限公司 一种平视显示器、平视显示方法以及车辆
CN108710208A (zh) * 2018-08-01 2018-10-26 张家港康得新光电材料有限公司 一种抬头显示系统及汽车
CN108919496A (zh) * 2018-08-08 2018-11-30 京东方科技集团股份有限公司 防太阳辐射的低功耗hud系统
CN111948810A (zh) * 2019-05-17 2020-11-17 未来（北京）黑科技有限公司 一种抬头显示装置
CN110989173A (zh) * 2019-12-27 2020-04-10 厦门天马微电子有限公司 一种显示系统
WO2021175608A1 (fr) * 2020-03-06 2021-09-10 Bayerische Motoren Werke Aktiengesellschaft Agencement pour la suppression de réflexion dans un système d'affichage de pare-brise, et système d'affichage de pare-brise
CN113820867A (zh) * 2021-10-15 2021-12-21 深圳前海智云谷科技有限公司 基于汽车挡风玻璃的空间复用的抬头显示器成像光路结构

Also Published As

Publication number Publication date
CN115561906A (zh) 2023-01-03
CN116500784A (zh) 2023-07-28

Similar Documents

Publication Publication Date Title
WO2023221578A1 (fr) Appareil d'affichage et procédé d'affichage
WO2024007749A1 (fr) Système optique, dispositif d'affichage et véhicule
WO2024017038A1 (fr) Appareil de génération d'image, dispositif d'affichage et véhicule
WO2024021852A1 (fr) Appareil d'affichage stéréoscopique, système d'affichage stéréoscopique et véhicule
WO2024021574A1 (fr) Système de projection 3d, système de projection et véhicule
CN217360538U (zh) 一种投影系统、显示设备和交通工具
WO2023138076A1 (fr) Appareil d'affichage et véhicule
WO2023138138A1 (fr) Dispositif d'affichage et véhicule
WO2023040662A1 (fr) Unité de génération d'image, appareil associé et procédé de projection d'image
WO2024021563A1 (fr) Dispositif d'affichage et véhicule
WO2023103492A1 (fr) Appareil de génération d'image, dispositif d'affichage et véhicule
WO2023040669A1 (fr) Dispositif d'affichage tête haute et véhicule
WO2023185293A1 (fr) Appareil de génération d'images, dispositif d'affichage et véhicule
WO2023098228A1 (fr) Appareil d'affichage, dispositif électronique et véhicule
WO2023061078A1 (fr) Dispositif d'affichage, appareil électronique et moyen de transport
WO2023087739A1 (fr) Appareil de projection, dispositif d'affichage et véhicule
WO2023130759A1 (fr) Dispositif d'affichage et véhicule
WO2023061079A1 (fr) Appareil d'affichage, dispositif électronique et véhicule
CN220983636U (zh) 一种显示装置、交通工具和车载系统
CN220983541U (zh) 一种扩散屏、显示装置、交通工具和车载系统
CN117991569A (zh) 投影装置、显示设备和交通工具
CN116819718A (zh) 一种投影镜头、投影装置、显示装置和交通工具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22921504

Country of ref document: EP

Kind code of ref document: A1