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WO2023138076A1 - 显示装置以及交通工具 - Google Patents

显示装置以及交通工具 Download PDF

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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
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WO
WIPO (PCT)
Prior art keywords
display device
imaging light
light
imaging
vehicle
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2022/118595
Other languages
English (en)
French (fr)
Inventor
赵晗
方元戎
赵晴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2023138076A1 publication Critical patent/WO2023138076A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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.

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Abstract

一种显示装置，该显示装置包括壳体（110）、位于壳体（110）内部的反射组件（113）以及位于壳体（110）外部的图像生成单元（120）。其中，图像生成单元（120）用于生成包含图像信息的成像光，并向壳体（110）内的反射组件（113）投射成像光，该成像光透射该壳体（110）后入射至反射组件（113）；反射组件（113）用于将接收到的成像光反射至壳体（110）外部。该显示装置中，图像生成单元（120）位于壳体（110）的外部，因而不需要占用壳体（110）内部的空间。在将显示装置安装到交通工具的仪表盘台时，图像生成单元（120）的位置可以根据需要灵活调整，可以充分利用仪表盘台上的空间，整体上减小了显示装置在交通工具上占用的空间，便于显示装置安装在空间较小的交通工具上。

Description

显示装置以及交通工具
本申请要求于2022年1月21日提交中国国家知识产权局、申请号202210074512.7、申请名称为“显示装置以及交通工具”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及图像显示领域，尤其涉及一种显示装置以及交通工具。
背景技术
随着汽车技术的不断发展，对汽车使用的便捷性和安全性提出了越来越高的要求。抬头显示(Head Up Display，HUD)装置已被广泛应用于汽车。抬头显示是把仪表信息(如速度)、导航信息等投射至驾驶员视野前方的一种装置，驾驶员可以在视野前方看到仪表信息和导航信息，不需要低头观察方向盘下方的仪表盘或者中控显示屏，从而可提高紧急情况下的制动反应时间，提升驾驶的安全性。
现有技术的抬头显示装置中，像源发出的成像光经过多次反射后投影到汽车的风挡上，风挡进一步将成像光反射至驾驶员的眼睛。现有的抬头显示装置通常体积较大(12-20升)，无法安装在空间较小的汽车上，适应性较差。
发明内容
鉴于此，本申请实施例提供了一种显示装置以及交通工具，该显示装置占用的体积较小，可以安装在空间较小的交通工具上。
第一方面，本申请提供的显示装置可以包括：壳体、位于壳体内部的反射组件以及位于壳体外部的图像生成单元。
其中，图像生成单元用于生成包含图像信息的成像光，并向壳体内的反射组件投射成像光，该成像光透射该壳体后入射至所述反射组件；反射组件用于将接收到的成像光反射至壳体外部。
在本实施例提供的显示装置中，图像生成单元位于壳体的外部，因而不需要占用壳体内部的空间。在将显示装置安装到交通工具的仪表盘(Instrument Panel，IP)台时，图像生成单元的位置可以根据需要灵活调整，可以充分利用IP台上的空间，整体上减小了显示装置在交通工具上占用的空间，便于显示装置安装在空间较小的交通工具上，适应性更好。
在本实施例提供的显示装置中，壳体可以起到防尘以及容纳反射组件的作用，壳体也可以称为外壳或防尘罩。
在一个可能的方案中，图像生成单元投射的成像光从所述壳体的第一表面透射至所述反射组件，所述反射组件反射的成像光从所述第一表面透射出来，即成像光从壳体的同一表面 入射和透射。
在一个可能的方案中，图像生成单元投射的成像光从所述壳体的第二表面透射至所述反射组件，所述反射组件反射的成像光从所述壳体的第三表面透射出来，即成像光从壳体的不同表面入射和透射。
在以上的方案中，图像生成单元与壳体的相对位置可以根据需要调整，灵活性较好。
在一个可能的方案中，图像生成单元包括光源、成像模块和投影镜头，光源用于输出光束至所述像模块，成像模块根据光束生成包含图像信息的成像光，投影镜头用于向反射组件投射所述成像光。
在一个可能的方案中，反射组件可以包括一个或多个反射元件，例如包括一个曲面镜或者包括一个曲面镜和反射镜的组合。其中，图像生成单元投射的成像光入射至反射镜，反射镜用于将入射的成像光反射至曲面镜，曲面镜用于将接收到的成像光反射至所述壳体外部。
在一个可能的方案中，反射镜可以为平面反射镜。
在一个可能的方案中，图像生成单元投射的成像光为P偏振光、S偏振光、圆偏振光或椭圆偏振光，P偏振光、S偏振光、圆偏振光或椭圆偏振光可以被反射组件反射至风挡。
在一个可能的方案中，从所述壳体出射至所述壳体外部的成像光为S偏振光。进而，S偏振光可以入射至风挡。相对于其他的偏振光，S偏振光可以更好的被风挡反射至人眼，从而提高显示效果，例如增强显示亮度和分辨率。
在一个可能的方案中，显示装置还包括第一偏振转换器件，该第一偏振转换器件位于所述图像生成单元和所述反射组件之间的光路上，用于改变所述图像生成单元投射的成像光的偏振方向。第一偏振组件还可以改变反射组件反射的成像光的偏振方向。
通过第一偏振转换器对图像生成单元投射的成像光以及反射组件反射的成像光的偏振方向进行转换，可以使得显示装置出射的成像光的偏振方向根据需要(例如风挡的需求)进行转换，灵活性更好。
例如，图像生成单元投射的成像光为P偏振光，第一偏振转换器将P偏振光转换为圆偏振光，圆偏振光被反射组件反射后经过第一偏振转换器，圆偏振光转换为S偏振光从壳体射出。
在一个可能的方案中，第一偏振转换器为1/4波片、1/8波片或1/2波片。
在一个可能的方案中，第一偏振转换器的位置可以根据需要灵活设置，其可以位于图像生成单元的出光侧、壳体的第一表面、第二表面、反射组件(反射镜和曲面镜)的反射面任何一处或多处。例如，1/4波片和1/8波片可以位于壳体的第一表面的内侧或外侧。1/4波片和1/8波片可以位于壳体的第二表面的内侧或外侧。
在一个可能的方案中，显示装置还包括第二偏振转换器件，该第二偏振转换器器件位于所述反射组件反射的成像光的传播路径上，用于改变从所述反射组件反射的成像光的偏振方向。
在一个可能的方案中，第二偏振转换器为1/4波片或1/8波片。
在一个可能的方案中，1/4波片和1/8波片的位置可以根据需要灵活设置，其可以位于反射镜的反射面、曲面镜的反射面、壳体的第一表面的内侧或外侧。
在一个可能的方案中，第二偏振转换器可以和第一偏振转换器配合使用，例如将第一偏振器件设置于壳体的第二表面，第二偏振器件设置于壳体的第一表面。
在一个可能的方案中，第二偏振转换器和第一偏振转换器可以相同，即一个偏振器件可以实现第二偏振转换器和第一偏振转换器各自的功能，例如同时改变所述图像生成单元投射的成像光的偏振方向以及改变反射组件反射的成像光的偏振方向。
在一个可能的方案中，显示装置还可以包括扩散屏，所述扩散屏位于图像生成单元的出光侧，用于对图像生成单元入射的成像光进行漫反射。漫反射后的光线可以入射到反射组件。
在一个可能的实施方案中，显示装置还包括位于所述图像生成单元出光侧的偏振片，所述偏振片透射S偏振光或P偏振光。
在一个可能的实施方案中，反射镜位于曲面镜的焦距内，进而反射镜反射的图像可以被曲面镜放大显示。
在一个可能的实施方案中，第一偏振转换器件粘贴在壳体的第一表面、第二表面、反射组件(反射镜和曲面镜)的反射面上，从而减小体积。
在一个可能的实施方案中，第一偏振转换器件粘贴平面反射镜的反射面。相比于粘贴在曲面镜，第一偏振转换器件与平面反射镜的贴合度更高，显示效果更好。
在一个可能的实施方案中，所述曲面镜为多焦点曲面镜或自由曲面镜。
第二方面，本申请提供一种交通工具，其包括如第一方面所述的显示装置。
在一个可能的方案中，显示装置安装在所述交通工具的仪表板台中。
在一个可能的方案中，交通工具还包括风挡，显示装置发出的成像光入射至风挡，风挡将其反射至人眼。
在一个可能的方案中，显示装置发出的成像光为S偏振光。
在一个可能的方案中，该风挡上还设置有透P反S膜，可以将显示装置发出的S偏振光反射至人眼，过滤掉显示装置发出的杂散光(P偏振光)，从而提升显示效果。
附图说明
图1是本申请实施例提供的显示装置使用场景的示意图；
图2为本申请实施例提供的一种显示装置安装在交通工具上的示意图；
图3为本申请实施例提供的另一种显示装置安装在交通工具上的示意图；
图4为本申请实施例提供的另一种显示装置安装在交通工具上的示意图；
图5为本申请实施例提供的另一种显示装置安装在交通工具上的示意图；
图6为本申请实施例提供的另一种显示装置安装在交通工具上的示意图；
图7为本申请实施例提供的另一种显示装置安装在交通工具上的示意图；
图8为本申请实施例提供的另一种显示装置安装在交通工具上的示意图；
图9为本申请实施例提供的另一种显示装置安装在交通工具上的示意图；
图10为本申请实施例提供的显示装置中的图像生成单元的结构示意图；
图11为本申请实施例公开的一种显示装置的电路示意图；
图12为本申请实施例提供的一种交通工具的功能示意图。
具体实施方式
本申请提供一种显示装置、电子设备和交通工具。显示装置可以用在很多场景中，例如汽车场景，本申请中的显示装置可以作为HUD来使用。
请参阅图1，抬头显示装置(简称HUD)可将导航信息、仪表信息等投射在驾驶员的前方视野范围，避免驾驶员低头查看这些信息，从而影响驾驶安全。HUD投射的图像经过风挡(挡风玻璃)反射后，在交通工具外部形成虚像，这些虚像可以叠加在交通工具外的真实环境上，使得驾驶员可获得增强现实(Augmented Reality，AR)的视觉效果，从而实现AR导航、自适应巡航、车道偏离预警等功能。其中，HUD的类型包括但不限于风挡(Windshield，W)-HUD、增强现实抬头显示(AR-HUD)等。
在本申请中，该显示装置也可以称为显示系统或虚像显示装置。该显示装置中包括的单元或模块可以称为组件或机构。
参考图2，图2为本申请实施例提供的一种显示装置安装在交通工具上的示意图。
如图2所示，该显示装置包括壳体110、图像生成单元(Picture Generation Unit，PGU)120以及位于壳体110中的反射组件。其中，PGU 120可以称为像源，其位于壳体110外部。壳体110中的反射组件在本实施例中包括曲面镜113。壳体110可以包括透明的第一表面111。
PGU 120生成包含图像信息的成像光，并向曲面镜113投射成像光，投射的成像光透射壳体110的第一表面111后入射至该曲面镜113。曲面镜113将接收到的成像光反射至壳体110外部。其中，曲面镜113反射的成像光从壳体110的第一表面111透射出来，例如透射至风挡，风挡进一步将成像光反射到人眼，人眼可以通过风挡看到虚像。此外，由于曲面镜113的凹面对成像光进行反射，PGU 120生成的图像可以被曲面镜113放大，用户可以看到放大的虚像。
在本实施例提供的显示装置中，PGU120位于壳体110的外部，因而不需要占用壳体110内部的空间。在将显示装置安装到交通工具的仪表盘(Instrument Panel，IP)台时，PGU120的位置可以根据需要灵活调整，例如将PGU 120放置于遮光板的位置(如图2所示)，可以替代遮光板的功能，从而减小了显示装置在交通工具的IP台上占用的空间，可以使得显示装置安装在空间较小的交通工具上，适应性更好。其中，遮光板可以遮挡外面的阳光入射到显示装置内(俗称阳光倒灌)，本实施例的显示装置不需要遮光板，PGU 120能起到遮挡阳光的作用，能降低成本。
本实施例提供的显示装置中，PGU120投射的成像光可以为P偏振光、S偏振光或圆偏振光，P偏振光、S偏振光或圆偏振光经过曲面镜113反射后从壳体110的第一表面111射出，入射至风挡，风挡可以将P偏振光、S偏振光或圆偏振光反射至人眼。
进一步参考图2，本实施例提供的显示装置还可以包括1/4波片(或相位延迟器)112，该1/4波片112位于曲面镜113的反射面上，其可以改变PGU 120投射的成像光的偏振方向，也可以改变曲面镜113反射的成像光的偏振方向。
例如，PGU 120投射的成像光为P偏振光(双箭头所示)，该成像光第一次经过1/4波片112后转换为圆偏振光或椭圆偏振光，该圆偏振光或椭圆偏振光被曲面镜113反射后，再次经过1/4波片112，从1/4波片112透射的成像光为S偏振光(圆点所示)，S偏振光从壳体110的第一表面111透射，并入射至风挡。
在本实施例中，可以调整曲面镜113的位置，使得从壳体110的第一表面111透射的S偏振光入射至挡风玻璃的入射角接近或等于布鲁斯特角，从而使得大部分S偏振光被风挡反射到人眼，提高图像的清晰度和亮度，获得较好的视觉效果。
参考图3，图3为本申请实施例提供的另一种显示装置安装在交通工具上的示意图。
图3所示的实施例的结构和图2实施例类似，主要区别在于，1/4波片212位于壳体110的第一表面111上，1/4波片212可以改变PGU 120投射的成像光的偏振方向，也可以改变曲面镜113反射的成像光的偏振方向。
例如，PGU 120投射的成像光为P偏振光(双箭头所示)，该成像光第一次经过1/4波片212后转换为圆偏振光或椭圆偏振光(椭圆所示)，该圆偏振光或椭圆偏振光被曲面镜113反射后，再次经过1/4波片212，从1/4波片212射出的成像光为S偏振光(圆点所示)，S偏振光从壳体110的第一表面111透射，并入射至风挡。
其中，1/4波片212可以位于第一表面111的外侧，也可以位于第一表面111的内侧(图3所示)。
参考图4，图4为本申请实施例提供的另一种显示装置安装在交通工具上的示意图。
图4所示的实施例的结构和图2实施例类似，主要区别在于，PGU 120投射的成像光从壳体110的第二表面114透射至曲面镜113，曲面镜113反射的成像光从第一表面111透射到壳体110的外部。其中，第一表面111和第二表面114均可以为透明表面。
在本实施例中，1/4波片112也位于曲面镜113的反射面上，曲面镜113的位置可以根据PGU 120的位置进行调整，使得曲面镜113反射的成像光可以通过第一表面111射出。
本实施例提供的显示装置将PGU 120设置于壳体110的侧部，可以结合交通工具的IP台的整体布局利用壳体110侧部的空间，适应性较好。另外，本实施例中的PGU 120发出的成像光入射曲面镜113的光路和曲面镜113反射的成像光的光路不交叉，可以降低成像光之间的串扰，提高显示效果。
参考图5，图5为本申请实施例提供的另一种显示装置安装在交通工具上的示意图。
图5所示的实施例的结构和图4实施例类似，主要区别在于，1/4波片213位于壳体110的第二表面114上，其可以改变PGU 120投射的成像光的偏振方向。另外，1/4波片212位于壳体110的第一表面111上，其可以改变曲面镜113反射的成像光的偏振方向。
例如，PGU 120投射的成像光为P偏振光(双箭头所示)，该成像光经过1/4波片213后转换为圆偏振光或椭圆偏振光(椭圆所示)，该圆偏振光或椭圆偏振光被曲面镜113反射后，经过1/4波片212，从1/4波片212射出的成像光为S偏振光(圆点所示)，S偏振光从壳体110的第一表面111透射，并入射至风挡。
本实施例中的PGU 120发出的成像光入射曲面镜113的光路和曲面镜113反射的成像光的光路不交叉，因而可以根据不同的光路设置两个不同的1/4波片213和212，提高线偏振光和圆偏振光之间的转换效率，例如提高P偏振光转换为圆偏振光的转换效率，进而提高显示装置整体发出的成像光的纯度，使得大部分成像光被风挡反射至人眼，增强显示效果。
在本实施例中，1/4波片213可以位于第二表面114的内侧(图5所示)，也可以位于第二表面114的外侧。由于第二表面114是平面，1/4波片213可以更好的与第二表面114贴合，安装更方便。另外，1/4波片213也可以位于PGU 120的出光侧，即PGU 120整体发出的成像光为圆偏振光或椭圆偏振光，圆偏振光或椭圆偏振光入射至曲面镜113。1/4波片也可以替换为1/8波片，两个1/8波片的效果类似于1个1/4波片的效果。例如，可以在第一表面111、 第二表面114和曲面镜113的反射面都设置1/8波片。
参考图6，图6为本申请实施例提供的另一种显示装置安装在交通工具上的示意图。
图6所示的实施例的结构和图5实施例类似，主要区别在于，PGU 120发出的成像光为圆偏振光或椭圆偏振光，1/4波片213位于壳体110的第二表面114上，第一表面111上没有设置1/4波片。
PGU 120投射圆偏振光或椭圆偏振光(椭圆所示)，该圆偏振光或椭圆偏振光经过1/4波片213后转换为线偏振光，例如为S偏振光，S偏振光被曲面镜113反射后，从壳体110的第一表面111透射，并入射至风挡。
参考图7，图7为本申请实施例提供的另一种显示装置安装在交通工具上的示意图。
如图7所示，该显示装置包括壳体310、PGU 320以及位于壳体310中的反射组件。其中，PGU320位于壳体110外部，壳体310中的反射组件在本实施例中包括曲面镜313和反射镜312。壳体310可以包括透明的第一表面311。
PGU320生成包含图像信息的成像光，并向反射镜312投射成像光，投射的成像光透射壳体310的第一表面311后入射至该反射镜312。反射镜312将接收到的成像光向曲面镜313反射，曲面镜313将接收到的成像光反射至壳体310外部。其中，曲面镜313反射的成像光从第一表面311透射出来，例如透射至风挡，风挡进一步将成像光反射到人眼，人眼可以通过风挡看到虚像。此外，由于曲面镜313的凹面对成像光进行反射，PGU 320生成的图像可以被曲面镜313放大，从而用户可以看到放大的虚像。
在本实施例提供的显示装置中，PGU320位于壳体310的外部，因而不需要占用壳体310内部的空间。在将显示装置安装到交通工具的IP台时，PGU320的位置可以根据需要调整，例如将其放置于遮光板的位置(图7所示)，替代遮光板的功能，从而减小了显示装置在交通工具的IP台上占用的空间，使得显示装置可以安装在空间较小的交通工具上，适应性更好。
本实施例提供的显示装置中，PGU320投射的成像光可以为P偏振光、S偏振光或圆偏振光，P偏振光、S偏振光或圆偏振光经过平面镜312、曲面镜313反射后从壳体310的第一表面111射出，入射至风挡。
进一步参考图7，本实施例提供的显示装置还可以包括1/4波片315，该1/4波片315位于反射镜312的反射面上，其可以改变PGU 320投射的成像光的偏振方向，也可以改变反射镜312反射的成像光的偏振方向。例如，PGU320投射的成像光为P偏振光(双箭头所示)，该成像光第一次经过1/4波片315后转换为圆偏振光或椭圆偏振光，该圆偏振光或椭圆偏振光被反射镜312反射后，再次经过1/4波片315，从1/4波片315透射的成像光为S偏振光(圆点所示)，S偏振光入射至曲面镜313，曲面镜313反射该S偏振光至壳体310的第一表面311，透射第一表面311后入射至风挡。
在本实施例中，可以调整曲面镜313或反射镜312的位置，使得从壳体310的第一表面311透射的S偏振光入射至挡风玻璃的入射角接近或等于布鲁斯特角，从而使得大部分S偏振光被反射到人眼，获得较好的视觉效果。
参考图8，图8为本申请实施例提供的另一种显示装置安装在交通工具上的示意图。
图8所示的实施例的结构和图7实施例类似，主要区别在于，1/4波片316位于曲面镜313的反射面上，1/4波片316可以改变反射镜312反射的成像光的偏振方向，也可以改变曲面镜313反射的成像光的偏振方向。
例如，PGU 320投射的成像光为P偏振光(双箭头所示)，该成像光透射第一表面311后至反射镜312，被反射镜312反射至曲面镜313，成像光第一次经过1/4波片316后转换为圆偏振光或椭圆偏振光，该圆偏振光或椭圆偏振光被曲面镜313反射后，再次经过1/4波片316，从1/4波片316透射的成像光为S偏振光(圆点所示)，S偏振光透射第一表面311后入射至风挡。
本实施例的有益效果参见上述图7实施例，在此不再赘述。
参考图9，图9为本申请实施例提供的另一种显示装置安装在交通工具上的示意图。
图9所示的实施例的结构和图7实施例类似，主要区别在于，1/4波片317位于壳体310的第一表面311上，其可以改变PGU 320投射的成像光的偏振方向，也可以改变曲面镜313反射的成像光的偏振方向。
例如，PGU 320投射的成像光为P偏振光(双箭头所示)，该成像光第一次经过1/4波片317后转换为圆偏振光或椭圆偏振光(椭圆所示)，该圆偏振光或椭圆偏振光被反射镜312反射至曲面镜313，被曲面镜313反射后，再次经过1/4波片317，从1/4波片317射出的成像光为S偏振光(圆点所示)，S偏振光成像光从壳体310的第一表面311透射，并入射至风挡。
其中，1/4波片317可以位于第一表面311的外侧，也可以位于第一表面311的内侧(图9所示)。本实施例的有益效果参考上述图7对应的实施例，在此不再赘述。
参考图10，图10为本申请实施例提供的显示装置中的图像生成单元的结构示意图。
如图10所示，该图像生成单元(可以称为光机)包括光源501、成像模块502和投影镜头503，该图像生成单元可以用于前述的显示装置中，也可以独立使用。
本实施例中的光源501输出白光(基色光)至成像模块502。成像模块502可以使用白光来生成源图像，输出成像光。投影镜头503用于将成像光向外投射，其可以为短焦镜头。
本实施例中的成像模块502可以为硅基液晶(Liquid Crystal On Silicon，LCOS)显示器、有机发光二极管(Organic Light-Emitting Diode，OLED)显示器、液晶显示器(Liquid Crystal Display，LCD)、数字光处理(Digital Light Procession，DLP)显示器或微机电系统(Micro-Electro-Mechanical Systems，MEMS)显示器等。
投影镜头503的出光面可以设置有偏光片、1/4波片、1/8波片、1/2波片等元件。投影镜头503投射的成像光可以为线偏振光，也可以为圆偏振光或椭圆偏振光，便于图像生成单元后续的元件进行处理。
参考图11，图11是本申请实施例提供的一种显示装置的电路示意图。
如图11所示，显示装置中的电路主要包括包含处理器1001，内部存储器1002，外部存储器接口1003，音频模块1004，视频模块1005，电源模块1006，无线通信模块1007，I/O接口1008、视频接口1009、控制器局域网(Controller Area Network，CAN)收发器1010，显示电路1028和成像器件1029等。其中，处理器1001与其周边的元件，例如存储器1002，CAN 收发器1010，音频模块1004，视频模块1005，电源模块1006，无线通信模块1007，I/O接口1008、视频接口1009、触控单元1010、显示电路1028可以通过总线连接。处理器1001可以称为前端处理器。
另外，本申请实施例示意的电路图并不构成对显示装置的具体限定。在本申请另一些实施例中，显示装置可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
其中，处理器1001包括一个或多个处理单元，例如：处理器1001可以包括应用处理器(Application Processor，AP)，调制解调处理器，图形处理器(Graphics Processing Unit，GPU)，图像信号处理器(Image Signal Processor，ISP)，控制器，视频编解码器，数字信号处理器(Digital Signal Processor，DSP)，基带处理器，和/或神经网络处理器(Neural-Network Processing Unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。
处理器1001中还可以设置存储器，用于存储指令和数据。例如，存储显示装置的操作系统、AR Creator软件包等。在一些实施例中，处理器1001中的存储器为高速缓冲存储器。该存储器可以保存处理器1001刚用过或循环使用的指令或数据。如果处理器1001需要再次使用该指令或数据，可从所述存储器中直接调用。避免了重复存取，减少了处理器1001的等待时间，因而提高了系统的效率。
在一些实施例中，显示装置还可以包括多个连接到处理器1001的输入输出(Input/Output，I/O)接口1008。接口1008可以包括但不限于集成电路(Inter-Integrated Circuit，I2C)接口，集成电路内置音频(Inter-Integrated Circuit Sound，I2S)接口，脉冲编码调制(Pulse Code Modulation，PCM)接口，通用异步收发传输器(Universal Asynchronous Receiver/Transmitter，UART)接口，移动产业处理器接口(Mobile Industry Processor Interface，MIPI)，通用输入输出(General-Purpose Input/Output，GPIO)接口，用户标识模块(Subscriber Identity Module，SIM)接口，和/或通用串行总线(Universal Serial Bus，USB)接口等。上述I/O接口1008可以连接鼠标、触摸屏、键盘、摄像头、扬声器/喇叭、麦克风等设备，也可以连接显示装置上的物理按键(例如音量键、亮度调节键、开关机键等)。
内部存储器1002可以用于存储计算机可执行程序代码，所述可执行程序代码包括指令。存储器1002可以包括存储程序区和存储数据区。其中，存储程序区可存储操作系统，至少一个功能所需的应用程序(比如通话功能，时间设置功能，AR功能等)等。存储数据区可存储显示装置使用过程中所创建的数据(比如电话簿，世界时间等)等。此外，内部存储器1002可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件，闪存器件，通用闪存存储器(Universal Flash Storage，UFS)等。处理器1001通过运行存储在内部存储器1002的指令，和/或存储在设置于处理器1001中的存储器的指令，执行显示装置的各种功能应用以及数据处理。
外部存储器接口1003可以用于连接外部存储器(例如Micro SD卡)，外部存储器可以根据需要存储数据或程序指令，处理器1001可以通过外部存储器接口1003对这些数据或程序执行进行读写等操作。
音频模块1004用于将数字音频信息转换成模拟音频信号输出，也用于将模拟音频输入转换为数字音频信号。音频模块1004还可以用于对音频信号编码和解码，例如进行放音或录音。在一些实施例中，音频模块1004可以设置于处理器1001中，或将音频模块1004的部分功能 模块设置于处理器1001中。显示装置可以通过音频模块1004以及应用处理器等实现音频功能。例如音乐播放，通话等。
视频接口1009可以接收输入的音视频，其具体可以为高清晰多媒体接口(High Definition Multimedia Interface，HDMI)，数字视频接口(Digital Visual Interface，DVI)，视频图形阵列(Video Graphics Array，VGA)，显示端口(Displayport，DP)，低压差分信号(Low Voltage Differential Signaling，LVDS)接口，平板显示连接(FPD-Link，Flat Panel Display Link)接口等，视频接口1009还可以向外输出视频。例如，显示装置通过视频接口接收导航系统发送的视频数据、接收域控制器发送的视频数据或者接收AR Creator发送的视频数据。
视频模块1005可以对视频接口1009输入的视频进行解码，例如进行H.264解码。视频模块还可以对显示装置采集到的视频进行编码，例如对外接的摄像头采集到的视频进行H.264编码。此外，处理器1001也可以对视频接口1009输入的视频进行解码，然后将解码后的图像信号输出到显示电路。
进一步的，上述显示装置还包括CAN收发器1010，CAN收发器1010可以连接到汽车的CAN总线(CAN BUS)。通过CAN总线，显示装置可以与车载娱乐系统(音乐、电台、视频模块)、车辆状态系统等进行通信。例如，用户可以通过操作显示装置来开启车载音乐播放功能。车辆状态系统可以将车辆状态信息(车门、安全带等)发送给显示装置进行显示。
显示电路1010和成像器件1011共同实现显示图像的功能。显示电路1010接收处理器1001输出的图像信号，对该图像信号进行处理后输入成像器件1011进行成像。显示电路1010还可以对成像器件1011显示的图像进行控制。例如，控制显示亮度或对比度等参数。其中，显示电路1010可以包括驱动电路、图像控制电路等。
成像器件1011用于根据输入的图像信号对光源输入的光束进行调制，从而生成可视图像。成像器件1011可以为硅基液晶面板、液晶显示面板或数字微镜设备。
在本实施例中，视频接口1009可以接收输入的视频数据(或称为视频源)，视频模块1005进行解码和/或数字化处理后输出图像信号至显示电路1010，显示电路1010根据输入的图像信号驱动成像器件1011将光源发出的光束进行成像，从而生成可视图像(发出成像光)。
电源模块1006用于根据输入的电力(例如直流电)为处理器1001和光源提供电源，电源模块1006中可以包括可充电电池，可充电电池可以为处理器1001和光源提供电源。光源发出的光可以传输到成像器件1029进行成像，从而形成图像光信号(成像光)。
此外，上述电源模块1006可以连接到汽车的供电模块(例如动力电池)，由汽车的供电模块为显示装置的电源模块1006供电。
无线通信模块1007可以使得显示装置与外界进行无线通信，其可以提供无线局域网(Wireless Local Area Networks，WLAN)(如无线保真(Wireless Fidelity，Wi-Fi)网络)，蓝牙(Bluetooth，BT)，全球导航卫星系统(Global Navigation Satellite System，GNSS)，调频(Frequency Modulation，FM)，近距离无线通信技术(Near Field Communication，NFC)，红外技术(Infrared，IR)等无线通信的解决方案。无线通信模块1007可以是集成至少一个通信处理模块的一个或多个器件。无线通信模块1007经由天线接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器1001。无线通信模块1007还可以从处理器1001接收待发送的信号，对其进行调频，放大，经天线转为电磁波辐射出去。
另外，视频模块1005进行解码的视频数据除了通过视频接口1009输入之外，还可以通 过无线通信模块1007以无线的方式接收或从内部存储器1002或外部存储器中读取，例如显示装置可以通过车内的无线局域网从终端设备或车载娱乐系统接收视频数据，显示装置还可以读取内部存储器1002或外部存储器中存储的音视频数据。
请参见图12，图12为本申请实施例提供的一种交通工具的功能示意图。
交通工具可包括各种子系统，例如图示中的传感器系统21、控制系统22、一个或多个外围设备23(图示以一个为例)、电源24、计算机系统25和显示系统26，上述各个子系统之间可以互相通信。显示系统22可以包括本申请实施例提供的显示装置。本实施例中的显示系统22还可以包括显示装置以外的部件，例如风挡，风挡可以对显示装置发出的成像光反射到人眼。
交通工具还可包括其他功能系统，例如为交通工具提供动力的引擎系统、座舱等等，本申请这里不作限定。
其中，传感器系统21可包括若干检测装置，这些检测装置能感受到被测量的信息，并将感受到的信息按照一定规律将其转换为电信号或者其他所需形式的信息输出。如图示出，这些检测装置可包括全球定位系统(Global Positioning System，GPS)、车速传感器、惯性测量单元(Inertial Measurement Unit，IMU)、雷达单元、激光测距仪、摄像装置、轮速传感器、转向传感器、档位传感器、或者其他用于自动检测的元件等等，本申请并不作限定。
控制系统22可包括若干元件，例如图示出的转向单元、制动单元、照明系统、自动驾驶系统、地图导航系统、网络对时系统和障碍规避系统。控制系统22可以接收传感器系统21发送的信息(例如车速、车距等)，实现自动驾驶、地图导航等功能。
可选地，控制系统14还可包括诸如用于控制车辆行驶速度的油门控制器及发动机控制器等元件，本申请不作限定。
外围设备23可包括若干元件，例如通信系统、触摸屏、用户接口、麦克风以及扬声器等等。其中，通信系统用于实现交通工具和除交通工具之外的其他设备之间的网络通信。在实际应用中，通信系统可采用无线通信技术或有线通信技术实现交通工具和其他设备之间的网络通信。该有线通信技术可以是指车辆和其他设备之间通过网线或光纤等方式通信。
电源24代表为车辆提供电力或能源的系统，其可包括但不限于再充电的锂电池或铅酸电池等。在实际应用中，电源中的一个或多个电池组件用于提供车辆启动的电能或能量，电源的种类和材料本申请并不限定。
交通工具的若干功能可以由计算机系统25控制实现。计算机系统25可包括一个或多个处理器2501(图示以一个处理器为例示出)和存储器2502(也可称为存储装置)。在实际应用中，该存储器2502也在计算机系统25内部，也可在计算机系统25外部，例如作为交通工具中的缓存等，本申请不作限定。
其中，处理器2501可包括一个或多个通用处理器，例如图形处理器(graphic processing unit，GPU)。处理器2501可用于运行存储器2502中存储的相关程序或程序对应的指令，以实现车辆的相应功能。
存储器2502可以包括易失性存储器(volatile memory)，例如RAM；存储器也可以包括非易失性存储器(non-vlatile memory)，例如ROM、快闪存储器(flash memory)、HDD或固态硬盘SSD；存储器2502还可以包括上述种类的存储器的组合。存储器2502可用于存储一 组程序代码或程序代码对应的指令，以便于处理器2501调用存储器2502中存储的程序代码或指令以实现车辆的相应功能。本申请中，存储器2502中可存储一组用于车辆控制的程序代码，处理器2501调用该程序代码可控制车辆安全行驶，关于如何实现车辆安全行驶具体在本申请下文详述。
可选地，存储器2502除了存储程序代码或指令之外，还可存储诸如道路地图、驾驶线路、传感器数据等信息。计算机系统25可以结合车辆功能框架示意图中的其他元件，例如传感器系统中的传感器、GPS等，实现车辆的相关功能。例如，计算机系统25可基于传感器系统21的数据输入控制交通工具的行驶方向或行驶速度等，本申请不作限定。
显示系统26可以显示图像信息，例如显示导航信息、播放视频等。显示系统26的具体结构参考上述显示装置的实施例，在此不再赘述。
其中，本实施例图示的四个子系统，传感器系统21、控制系统22、计算机系统25和显示系统26仅为示例，并不构成限定。在实际应用中，交通工具可根据不同功能对车辆中的若干元件进行组合，从而得到相应不同功能的子系统。在实际应用中，交通工具可包括更多或更少的子系统或元件，本申请不作限定。
本申请实施例中的交通工具可以是汽车、飞机、轮船、火箭等已知的交通工具，还可以是未来新出现的交通工具。汽车可以是电动汽车、燃油车或混合动力车，例如，纯电动汽车、增程式电动汽车、混合动力电动汽车、燃料电池汽车、新能源汽车等，本申请对此不做具体限定。此外，本申请实施例中的电子设备包括安装有显示装置的设备，其可以包括上述交通工具，还可用为医疗设备、办公娱乐设备或工业控制设备，本实施例对此不做限定。
本申请的术语“第一、第二、第三”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序，应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以本申请未描述的顺序实施。为了更加明显地体现不同实施例中的组件的关系，本申请采用相同的附图编号来表示不同实施例中功能相同或相似的组件。
还需要说明的是，除非特殊说明，一个实施例中针对一些技术特征的具体描述也可以应用于解释其他实施例提及对应的技术特征。
其中，本申请中的各个实施例之间相同相似的部分互相参见即可。以上所述仅为本申请的具体实施方式，本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。

Claims (12)

  1. 一种显示装置，其特征在于，包括：
    壳体、位于所述壳体外部的图像生成单元以及位于所述壳体内部的反射组件；
    所述图像生成单元，用于生成包含图像信息的成像光，并向壳体内的反射组件投射所述成像光，所述成像光透射所述壳体后入射至所述反射组件；
    所述反射组件，用于将接收到的成像光进行反射，反射后的成像光透射所述壳体后出射至所述壳体外部。
  2. 如权利要求1所述的显示装置，其特征在于，
    所述图像生成单元投射的成像光从所述壳体的第一表面透射至所述反射组件，所述反射组件反射的成像光从所述第一表面透射出来。
  3. 如权利要求1所述的显示装置，其特征在于，
    所述图像生成单元投射的成像光从所述壳体的第二表面透射至所述反射组件，所述反射组件反射的成像光从所述壳体的第三表面透射出来。
  4. 如权利要求1-3任一项所述的显示装置，其特征在于，
    所述图像生成单元投射的成像光为P偏振光、S偏振光或圆偏振光。
  5. 如权利要求4所述的显示装置，其特征在于，从所述壳体出射至所述壳体外部的成像光为S偏振光。
  6. 如权利要求4所述的显示装置，其特征在于，还包括：
    第一偏振转换器件，所述第一偏振转换器件位于所述图像生成单元和所述反射组件之间的光路上，用于改变所述图像生成单元投射的成像光的偏振方向和所述反射组件反射的成像光的偏振方向。
  7. 如权利要求6所述的显示装置，其特征在于，所述第一偏振转换器件为1/4波片。
  8. 如权利要求6所述的显示装置，其特征在于，所述第一偏振转换器件设置于所述反射组件的反射面上。
  9. 如权利要求1-3任一项所述的显示装置，其特征在于，
    所述反射组件包括曲面镜和反射镜；
    所述图像生成单元投射的成像光入射至所述反射镜，所述反射镜用于将入射的成像光反射至所述曲面镜，所述曲面镜用于将接收到的成像光反射至所述壳体外部。
  10. 如权利要求9所述的显示装置，其特征在于，所述反射镜为平面反射镜。
  11. 如权利要求1-3任一项所述的显示装置，其特征在于，
    所述图像生成单元包括光源、成像模块和投影镜头；
    所述光源用于输出光束至所述像模块，所述成像模块用于根据光束生成包含图像信息的成像光，所述投影镜头用于向所述反射组件投射所述成像光。
  12. 一种交通工具，其特征在于，包括如权利要求1-11任一项所述的显示装置，所述显示装置安装在所述交通工具的仪表板台中。
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