WO2018233288A1 - 平视显示装置及行驶装置 - Google Patents

平视显示装置及行驶装置 Download PDF

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Publication number
WO2018233288A1
WO2018233288A1 PCT/CN2018/074119 CN2018074119W WO2018233288A1 WO 2018233288 A1 WO2018233288 A1 WO 2018233288A1 CN 2018074119 W CN2018074119 W CN 2018074119W WO 2018233288 A1 WO2018233288 A1 WO 2018233288A1
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WIPO (PCT)
Prior art keywords
head
display device
display
light
sub
Prior art date
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PCT/CN2018/074119
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English (en)
French (fr)
Inventor
李佃蒙
Original Assignee
京东方科技集团股份有限公司
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Priority to US16/626,316 priority Critical patent/US11561396B2/en
Publication of WO2018233288A1 publication Critical patent/WO2018233288A1/zh

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    • 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
    • G02B27/0149—Head-up displays characterised by mechanical features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/23—Head-up displays [HUD]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • G02B26/0841—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD the reflecting element being moved or deformed by electrostatic means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • G02B26/085—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD the reflecting means being moved or deformed by electromagnetic means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/23—Optical features of instruments using reflectors
    • 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
    • G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
    • 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
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
    • 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
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/015—Head-up displays characterised by mechanical features involving arrangement aiming to get less bulky devices
    • 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
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/101—Scanning systems with both horizontal and vertical deflecting means, e.g. raster or XY scanners

Definitions

  • the present disclosure belongs to the field of display technologies, and in particular, to a head up display device and a traveling device.
  • Heads-Up Display also known as Head-Up Display (HUD)
  • HUD Head-Up Display
  • driving information such as speed information and navigation information
  • the two-layer display HUD mostly uses two TFT-LCD (thin film transistor liquid crystal display) or DLP+TFT-LCD (ie, Digital Light Processing (DLP) technology and TFT-LCD combination, wherein DLP is a display technology of TI company.
  • TFT-LCD thin film transistor liquid crystal display
  • DLP+TFT-LCD Digital Light Processing
  • TFT-LCD display technology of TI company
  • an embodiment of the present disclosure provides a head up display device, the head up display device comprising:
  • a scanner configured to scan light emitted by the light source to form scan light
  • An angle adjuster configured to change an exit angle of the scanning light
  • a display assembly configured to form an image based on the scanned light from the angle adjuster
  • a projection assembly configured to project an image formed on the display component onto the selected area.
  • the angle adjuster is configured to expand an exit angle of the scanned light.
  • the display component includes a plurality of sub-display components; wherein the plurality of sub-display components are independently disposed, and distances of the plurality of sub-display components to the scanner are different from each other.
  • At least a portion of the plurality of sub-display components are different in size from each other.
  • each of the plurality of sub-display assemblies includes a diffuser plate.
  • the angle adjuster includes an optical component configured to expand an exit angle of the scanned light.
  • the angle adjuster further includes a collimator configured to converge and collimate a beam of light emitted by the light source to cause the scanner to The emitted light is scanned to form scanning light.
  • the collimator includes a Fresnel lens and the optical component comprises a Fresnel lens.
  • the collimator includes a Fresnel lens equivalent to a convex lens
  • the optical component includes a Fresnel lens equivalent to a concave lens
  • the collimator includes a Fresnel lens and the optical assembly includes a concave lens.
  • the collimator includes a Fresnel lens equivalent to a convex lens.
  • the collimator includes a convex lens and the optical component comprises a Fresnel lens.
  • the optical component comprises a Fresnel lens equivalent to a concave lens.
  • the scanner comprises a MEMS mirror.
  • the MEMS mirror comprises an electrostatically driven MEMS mirror.
  • the MEMS mirror comprises an electromagnetically driven MEMS mirror.
  • the MEMS mirror comprises a two-axis MEMS mirror.
  • the light source comprises a laser source.
  • the laser source includes a plurality of laser sources that respectively emit light beams of three primary colors of R, G, and B.
  • the projection assembly includes a reflective sheet.
  • an embodiment of the present disclosure provides a traveling device including a windshield and the above-described head-up display device; wherein the selected region includes a portion of the windshield region.
  • the travel device includes any one of a car, a train, an airplane, and a ship.
  • FIG. 1 is a schematic diagram of a head up display device of an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a head up display device of some embodiments of the present disclosure.
  • FIG. 3 is a schematic diagram of a head up display device of some embodiments of the present disclosure.
  • FIG. 4 is a schematic diagram of a head up display device in accordance with some embodiments of the present disclosure.
  • an embodiment of the present disclosure provides a head up display device including: a light source 1 , a scanner (eg, MEMS mirror 2 ), an angle adjuster 3 , a display assembly 4 , and a projection assembly 5.
  • a scanner is used to scan (eg, reflect) light emitted by the light source 1 to form scanning light.
  • the angle adjuster 3 is used to change the exit angle (for example, enlargement) of the scanning light.
  • the display assembly 4 is for forming an image based on the scanning light from the angle adjuster 3.
  • Projection assembly 5 is used to project an image formed on display assembly 4 onto the selected area. It should be understood that the exit angle refers to the angle between the outgoing ray and the normal to the exit surface.
  • the light source 1 in the head up display device may connect information collected by an image acquisition unit (eg, a camera) (eg, driving information such as speed information and navigation information) and form and emit modulated light according to the collected information.
  • an image acquisition unit eg, a camera
  • driving information such as speed information and navigation information
  • the scanner scans the modulated light emitted by the light source 1 in a two-dimensional manner to form an image on the display assembly 4.
  • the projection assembly 5 projects the image formed on the display assembly 4 onto a selected area (e.g., the front windshield 6) to alert the driver of driving information.
  • the head-up display device light source 1 may be connected to a controller (such as an engine control unit ECU of the automobile) of the traveling device on which the head-up display device is mounted to collect information (for example, driving information such as speed information and navigation information) and collect the information according to the collected information.
  • the information forms and emits modulated light.
  • the scanner scans the modulated light emitted by the light source 1 in a two-dimensional manner to form an image on the display assembly 4.
  • the projection assembly 5 projects the image formed on the display assembly 4 onto a selected area (e.g., the front windshield 6) to alert the driver of driving information.
  • the deflection angle of the scanner is about 15 to 20 degrees, so that a scanner is required to form a long light path when scanning to form two or more images and avoid overlapping images, thereby causing
  • the head-up display device is bulky.
  • the head-up display device in the embodiment of the present disclosure includes an angle adjuster 3 that can change the exit angle of the scanning light formed by the scanner as needed, for example, to expand the exit angle of the scanning light formed by the scanner. Therefore, it is possible to shorten the optical path of the scanning light when two or more images are formed and to avoid overlapping of the images, thereby reducing the volume of the head-up display device.
  • the angle of deflection refers to the angle at which the plane in which the scanner is located can be deflected, such as the angle of deflection a in Figures 2 to 4.
  • light source 1 can be a parallel beam source, such as a laser source such as a semiconductor laser or a solid state laser.
  • the light source 1 can modulate the intensity of the emitted light by the control circuit and emit the modulated light (modulated light or modulated light beam).
  • the laser light source 1 may include three or more laser sources that respectively emit three primary color beams of R, G, and B, and the three primary color light beams of R, G, and B may form a color image after synthesis to make the head-up display
  • the device forms a full color virtual image.
  • the scanner can include a MEMS (Micro Electro Mechanical System) mirror, a galvanometer mirror, a polygon mirror, or the like.
  • the scanner may be a MEMS mirror 2 that contributes to miniaturization of the head up display device.
  • the MEMS mirror 2 includes an electrostatically driven MEMS mirror or an electromagnetically driven MEMS mirror.
  • display component 4 can include a plurality of sub-display components.
  • the plurality of sub-display components are independently disposed, and the distances between the plurality of sub-display components to the scanner (eg, the MEMS mirror 2) are different.
  • the plurality of sub-display assemblies may each be a diffuser plate having a different size, for example having a different area, such as having a different shape or the like.
  • the display component 4 in the embodiment of the present disclosure includes two sub-display components (the first sub-display component 41 and the second sub-display component 42, and the distance from the first sub-display component 41 to the scanner is second
  • the distance between the sub display assembly 42 and the scanner is larger as an example.
  • driving information may include speed information and danger signals.
  • a danger signal is provided by the scanner to the first sub-display assembly 41 and speed information is provided to the second sub-display assembly 42.
  • the distance between the first sub-display component 41 and the second sub-display component 42 can be adjusted so that the speed information displayed by the second sub-display component 42 can be in front of the driver through the projection component 5 to Imaging at 3 meters, for example the resulting image can be suspended above the hood of the motor vehicle.
  • the danger signal displayed by the first sub-display assembly 41 can be imaged 5 to 10 meters in front of the driver through the projection assembly 5, for example, the formed image can be suspended above the road surface in front of the vehicle.
  • the display assembly 4 includes more than three sub-display assemblies
  • at least a portion of the sub-display assemblies are different in size.
  • each sub-display assembly can include a diffuser plate.
  • each of the sub-display components may include a Fresnel lens, a diffusing screen, or a screen of a combination of a Fresnel lens and a diffusing plate, and the like.
  • the projection assembly 5 can include a reflective sheet.
  • the projection assembly 5 can include a curved reflective sheet 51 and a planar reflective sheet 52 as shown in FIG. 1, which will carry various types from the display assembly 4.
  • the beam of information is projected onto the selected area (e.g., a partial region of the windshield) to form a nearer and farther virtual image in front of the driver's eye (as indicated by the dashed line in the upper right hand corner of Figure 1).
  • the angle adjuster 3 can include an optical component 32.
  • the optical assembly 32 is for changing the exit angle of the scanning light.
  • the angle adjuster 3 in the embodiment of the present disclosure will be further described below.
  • the angle adjuster 3 can include a collimator 31 for concentrating and/or collimating the light beams emitted by the light source 1 to cause the scanner to The emitted light is scanned (eg, reflected) to form scanning light (eg, reflected light).
  • the collimator 31 may include a Fresnel lens (eg, a Fresnel lens equivalent to a convex lens); the optical component 32 may also include a Fresnel lens ( For example, a Fresnel lens equivalent to a concave lens).
  • the display assembly 4 includes a first sub-display assembly 41 for displaying a hazard signal and a second sub-display assembly 42 for displaying speed information
  • the laser light emitted by the light source 1 in the head-up display device is via Fresnel
  • the lens is concentrated and/or collimated and illuminated to the MEMS mirror 2.
  • the MEMS mirror 2 can be a two-axis MEMS scanning mirror (or a two-axis MEMS mirror), and the two-axis MEMS scanning mirror can be rotated at high speed around the mutually perpendicular X-axis and Y-axis by electrostatic or electromagnetic means, thereby being on the X-axis.
  • the light is scanned (for example, reflected) on the Y-axis.
  • the maximum deflection angle of the two-axis MEMS scanning mirror in the related art on the X-axis and the Y-axis is usually about 20 and 15 degrees, respectively.
  • the deflection angle ⁇ of the MEMS mirror 2 is 10°
  • the deflection angle ⁇ 1 of the scanned light passing through the MEMS mirror 2 is 20° according to the geometric optical correlation theory.
  • the scanning light having a deflection angle of 20° is then diffused through the optical assembly 32 (in this example, the optical component 32 may be a Fresnel lens equivalent to a concave lens) such that the final scanning light has a deflection angle ⁇ 2 of 40°.
  • the focal lengths of the two Fresnel lenses 31 and 32 and the interval therebetween may be set as the case may be to control the magnification of the deflection angle of the scanning light.
  • the scanning light diffused by the optical component 32 is irradiated onto the sub-display assembly at the corresponding position, specifically, the danger signal is displayed on the first sub-display unit 41, and the speed information is displayed on the second sub-display unit 42.
  • the second sub-display assembly 42 is closer to the MEMS mirror 2 than the first sub-display assembly 41, so the final projection assembly 5 projects the two images onto the driver's eyes and drives them in front of the driver.
  • the virtual image is formed at two different positions farther and closer (where the virtual image showing the speed information is closer to the driver than the virtual image showing the danger signal).
  • the collimator 31 can include a Fresnel lens (eg, a Fresnel lens equivalent to a convex lens); the optical component 32 can include a concave lens.
  • the working principle of the head-up display device is basically the same as that of the head-up display device corresponding to FIG. 2, except that the concave lens is used to further enlarge the deflection angle of the scanning light of the MEMS mirror 2, and the deflection angle ⁇ 1 can also be 20°.
  • the scanning light is diffused such that the deflection angle ⁇ 2 of the scanning light diffused through the optical component 32 is 40°.
  • the focal length of the Fresnel lens and the concave lens and the interval therebetween may be set as the case may be to control the magnification of the deflection angle of the scanning light.
  • the collimator 31 may be a convex lens; the optical component 32 may be a Fresnel lens (eg, a Fresnel lens equivalent to a concave lens).
  • the working principle of the head-up display device is basically the same as that of the head-up display device corresponding to FIG. 2, except that the laser light emitted from the light source 1 is concentrated and/or collimated by the convex lens, so that the collimated light is irradiated to the MEMS mirror 2.
  • a head up display device provided by an embodiment of the present disclosure has, at least in part, the following
  • the deflection angle of the scanner in the related art is about 15° to 20°, so that a scanner is required to form a long light path when scanning to form two or more images and avoid image overlap, thereby causing the size of the head-up display device. Larger.
  • the head-up display device in the embodiment of the present disclosure includes an angle adjuster that expands the exit angle of the scanning light formed by the scanner. Therefore, it is possible to shorten the optical path of the scanning light when two or more images are formed and to avoid overlapping of the images, thereby reducing the volume of the head-up display device.
  • Embodiments of the present disclosure also provide a traveling device including a windshield 6 and the above-described head-up display device provided by any of the above embodiments, wherein the selected area is a portion of the windshield 6 region.
  • the traveling device includes, but is not limited to, any one of a car, a train, an airplane, and a ship.
  • the traveling device of the embodiment of the present disclosure includes the above-described head-up display device provided by the embodiment of the present disclosure, information such as driving information, danger alert, and the like can be displayed on a partial region of the windshield 6 of the traveling device to make the driver Driving is more convenient and safe.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

提供了一种平视显示装置及一种行驶装置。平视显示装置包括：光源（1），扫描器（2），被配置为对光源（1）所发出的光进行扫描，以形成扫描光；角度调节器（3），被配置为改变扫描光的出射角度；显示组件（4），被配置为根据来自角度调节器（3）的扫描光形成图像；以及投影组件（5），被配置为将显示组件（4）上所形成的图像投影在所选择的区域。

Description

平视显示装置及行驶装置
相关申请的交叉引用
本申请要求于2017年6月23日提交的中国专利申请No.201710488324.8的优先权，该专利申请的全部内容通过引用方式合并于此。
技术领域
本公开属于显示技术领域，具体涉及一种平视显示装置及一种行驶装置。
背景技术
抬头数字显示装置(Heads-Up Display)，又叫平视显示装置(Head-Up Display，简称为HUD)，用于将驾驶信息(例如速度信息及导航信息等)以虚像投影到前挡风玻璃侧，使得驾驶员不必低头查看仪表盘，就能看清该驾驶信息。
随着AR(Augmented Reality)技术在HUD领域的应用，双层显示成为现阶段AR HUD的较好实现形式。目前双层显示HUD大多采用两个TFT-LCD(薄膜晶体管液晶显示器)或者DLP+TFT-LCD(即Digital Light Processing(DLP)技术与TFT-LCD的结合，其中DLP是TI公司的一种显示技术)作为显示组件，这两种实现方式在功耗、体积、亮度和成本效益方面都有不足。
发明内容
根据本公开的一个方面，本公开的实施例提供了一种平视显示装置，该平视显示装置包括：
光源；
扫描器，被配置为对所述光源所发出的光进行扫描，以形成 扫描光；
角度调节器，被配置为改变所述扫描光的出射角度；
显示组件，被配置为根据来自所述角度调节器的扫描光形成图像；以及
投影组件，被配置为将所述显示组件上所形成的图像投影在所选择的区域上。
在一些实施例中，所述角度调节器，被配置为扩大所述扫描光的出射角度。
在一些实施例中，所述显示组件包括多个子显示组件；其中，所述多个子显示组件独立设置，且所述多个子显示组件到所述扫描器的距离彼此不同。
在一些实施例中，所述多个子显示组件中的至少部分子显示组件的尺寸彼此不同。
在一些实施例中，所述多个子显示组件中的每一个包括扩散板。
在一些实施例中，所述角度调节器包括光学组件，所述光学组件被配置为扩大所述扫描光的出射角度。
在一些实施例中，所述角度调节器还包括准直器，所述准直器被配置为将所述光源所发出的光束进行汇聚和准直，以使所述扫描器对所述光源所发出的光进行扫描，从而形成扫描光。
在一些实施例中，所述准直器包括菲涅尔透镜，并且所述光学组件包括菲涅尔透镜。
在一些实施例中，所述准直器包括等效于凸透镜的菲涅尔透镜，并且所述光学组件包括等效于凹透镜的菲涅尔透镜。
在一些实施例中，所述准直器包括菲涅尔透镜，并且所述光学组件包括凹透镜。
在一些实施例中，所述准直器包括等效于凸透镜的菲涅尔透镜。
在一些实施例中，所述准直器包括凸透镜，并且所述光学组件包括菲涅尔透镜。
在一些实施例中，所述光学组件包括等效于凹透镜的菲涅尔透镜。
在一些实施例中，所述扫描器包括MEMS反光镜。
在一些实施例中，所述MEMS反光镜包括静电驱动式MEMS反光镜。
在一些实施例中，所述MEMS反光镜包括电磁驱动式MEMS反光镜。
在一些实施例中，所述MEMS反光镜包括两轴MEMS反光镜。
在一些实施例中，所述光源包括激光光源。
在一些实施例中，所述激光光源包括分别发出R、G、B三原色光束的多个激光源。
在一些实施例中，所述投影组件包括反射片。
在本公开的另一方面，本公开的实施例提供了一种行驶装置，该行驶装置包括挡风玻璃和上述的平视显示装置；其中，所述所选择的区域包括所述挡风玻璃的部分区域。
在一些实施例中，所述行驶装置包括汽车、火车、飞机和轮船中的任意一种。
附图说明
图1为本公开的实施例的平视显示装置的示意图；
图2为本公开的一些实施例的平视显示装置的示意图；
图3为本公开的一些实施例的平视显示装置的示意图；以及
图4为本公开的一些实施例的平视显示装置的示意图。
具体实施方式
为使本领域技术人员更好地理解本公开的技术方案，下面结合附图和具体实施方式对本公开作进一步详细描述。
如图1所示，本公开的实施例提供了一种平视显示装置，该平视显示装置包括：光源1、扫描器(例如，MEMS反光镜2)、 角度调节器3、显示组件4和投影组件5。扫描器用于对光源1所发出的光进行扫描(例如，反射)，以形成扫描光。角度调节器3用于改变扫描光的出射角度(例如，扩大)。显示组件4用于根据来自所述角度调节器3的扫描光形成图像。投影组件5用于将显示组件4上所形成的图像投影在所选择的区域上。应当理解的是，出射角度指的是出射光线与出射面的法线之间的夹角。
可选地，平视显示装置中光源1可以连接图像采集单元(例如，相机)所采集的信息(例如，速度信息及导航信息等驾驶信息)并根据所采集的信息形成并发射调制光。之后，扫描器对光源1所发射的调制光以二维方式进行扫描，以在显示组件4上形成图像。最后，投影组件5将显示组件4上所形成的图像投影在所选择的区域(例如前挡风玻璃6)上，以提示驾驶员驾驶信息。
可选地，平视显示装置光源1可以连接安装该平视显示装置的行驶装置的控制器(例如汽车的发动机控制单元ECU)从而采集信息(例如，速度信息及导航信息等驾驶信息)并根据所采集的信息形成并发射调制光。之后，扫描器对光源1所发射的调制光以二维方式进行扫描，以在显示组件4上形成图像。最后，投影组件5将显示组件4上所形成的图像投影在所选择的区域(例如前挡风玻璃6)上，以提示驾驶员驾驶信息。
在发明人所知的技术中，扫描器的偏转角度在15°至20°左右，因此采用扫描器在扫描形成两幅或者更多幅图像并且避免图像重叠时，需要较长的光路，从而造成平视显示装置的体积较大。
本公开的实施例中的平视显示装置包括了角度调节器3，角度调节器3可以根据需要改变扫描器所形成的扫描光的出射角度，例如扩大扫描器所形成的扫描光的出射角度。因此，可以在形成两幅或者更多幅图像并且避免图像重叠时缩短扫描光的光路，从而缩小平视显示装置的体积。应当理解的是，偏转角度指的是扫描器所在的平面能够偏转的角度，如图2至图4中的偏转角度α。
在一些实施例中，光源1可以为平行光束光源，例如为诸如半导体激光器或者固体激光器之类的激光光源。该光源1能够用 控制电路来调制其射出光的强度，并且射出调制光后的光(调制光或调制光束)。
可选地，激光光源1可以包括分别发出R、G、B三原色光束的三个或更多个激光源，所述R、G、B三原色光束在合成之后可以形成彩色图像，以使该平视显示装置形成全彩色的虚像。
在一些实施例中，扫描器可以包括MEMS(微电子机械***)反光镜、检流计反射镜、多角镜或类似物。例如，扫描器可以为MEMS反光镜2，MEMS反光镜2有助于所述平视显示装置的小型化。
在一些实施例中，MEMS反光镜2包括静电驱动式MEMS反光镜或者电磁驱动式MEMS反光镜。
在一些实施例中，显示组件4可以包括多个子显示组件。所述多个子显示组件独立设置，且所述多个子显示组件到扫描器(例如，MEMS反光镜2)之间的距离不同。
在一些实施例中，所述多个子显示组件可以分别是具有不同尺寸规格的扩散板，例如具有不同的面积，例如具有不同的形状等。
由于各个子显示组件到扫描器之间的距离不同，因此，可以避免图像重叠，同时可以将各个子显示组件上的图像分别投影在所选择的区域前方的不同的位置(即，形成不同的视距)处。
为了便于描述，以本公开的实施例中的显示组件4包括两个子显示组件(第一子显示组件41和第二子显示组件42，且第一子显示组件41到扫描器的距离比第二子显示组件42到扫描器的距离更大)为例进行说明。例如，驾驶信息可以包括速度信息和危险信号。由扫描器向第一子显示组件41提供危险信号，向第二子显示组件42提供速度信息。在此情况下，可以通过调整第一子显示组件41和第二子显示组件42之间的距离，以使第二子显示组件42所显示的速度信息通过投影组件5可以在驾驶员前方2至3米处成像，例如所形成的图像可以悬浮在机动车引擎盖上方。同时，第一子显示组件41显示的危险信号通过投影组件5可以在驾 驶员前方5至10米处成像，例如所形成的图像可以悬浮在机动车前方的路面上方。
在一些实施例中，在显示组件4包括三个以上的子显示组件的情况下，至少部分所述子显示组件的尺寸不同。如此设置，可以使得所述平视显示装置能够实现距离驾驶员较远和较近的两层(如图1的右上角的虚线所示)投影的图像大小不同。
在一些实施例中，每个子显示组件可以包括扩散板。可替换地，每个子显示组件可以包括菲涅尔透镜、扩散屏幕或者菲涅尔透镜和扩散板组合的屏幕等。
在一些实施例中，投影组件5可以包括反射片，例如，投影组件5可以包括如图1所示的曲面反射片51和平面反射片52，所述反射片将来自显示组件4的携带各种信息的光束投影在所选择的区域(例如，挡风玻璃的部分区域)上，从而在驾驶员的眼睛的前方形成较近和较远的虚像(如图1的右上角的虚线所示)。
在一些实施例中，角度调节器3可以包括光学组件32。光学组件32用于改变所述扫描光的出射角度。以下对本公开的实施例中的角度调节器3进行进一步的介绍。
在一些实施例中，角度调节器3可以包括准直器31，准直器31用于将所述光源1所发出的光束进行汇聚和/或准直，以使扫描器对所述光源1所发出的光进行扫描(例如，反射)，以形成扫描光(例如，反射光)。
如图2所示，在本公开的一些实施例中，准直器31可以包括菲涅尔透镜(例如为等效于凸透镜的菲涅尔透镜)；光学组件32也可以包括菲涅尔透镜(例如为等效于凹透镜的菲涅尔透镜)。在显示组件4包括用于显示危险信号的第一子显示组件41和用于显示速度信息的第二子显示组件42的示例中，所述平视显示装置中的光源1发出的激光经菲涅尔透镜汇聚和/或准直后照射至MEMS反光镜2。MEMS反光镜2可以为两轴MEMS扫描镜(或称为两轴MEMS反光镜)，两轴MEMS扫描镜可以通过静电或电磁等方式绕互相垂直的X轴和Y轴高速转动，从而在X轴和Y 轴上对光线进行扫描(例如，反射)。相关技术中的两轴MEMS扫描镜在X轴和Y轴上的最大偏转角度通常分别为20°和15°左右。例如，在MEMS反光镜2的偏转角度α为10°的情况下，根据几何光学相关理论，经过MEMS反光镜2的扫描后的扫描光的偏转角度α 1为20°。偏转角度为20°的扫描光再经过光学组件32(在该示例中光学组件32可以为等效于凹透镜的菲涅尔透镜)扩散以后，使得最终的扫描光的偏转角度α 2为40°。可替换地，可以根据具体情况设置两个菲涅尔透镜31和32的焦距和它们之间的间隔，以控制扫描光的偏转角度的放大倍率。经过光学组件32扩散后的扫描光照射至相应位置的子显示组件上，具体地在第一子显示组件41上显示危险信号，在第二子显示组件42显示速度信息。如图1所示，第二子显示组件42较第一子显示组件41更靠近MEMS反光镜2，因此最终投影组件5将这两幅图像投射至驾驶员的眼睛，并在驾驶员前方距离驾驶员较远和较近的两个不同位置处分别形成虚像(其中，显示速度信息的虚像较显示危险信号的虚像更靠近驾驶员)。
如图3所示，在本公开的一些实施例中，准直器31可以包括菲涅尔透镜(例如为等效于凸透镜的菲涅尔透镜)；光学组件32可以包括凹透镜。该种平视显示装置的工作原理与对应图2的平视显示装置基本相同，区别在于，利用凹透镜来进一步扩大MEMS反光镜2的扫描光的偏转角度，此时也可以将偏转角度α 1为20°的扫描光进行扩散，使得经过光学组件32扩散后的扫描光的偏转角度α 2为40°。可替换地，可以根据具体情况设置菲涅尔透镜和凹透镜的焦距和它们之间的间隔，以控制扫描光的偏转角度的放大倍率。
如图4所示，在本公开的一些实施例中，准直器31可以为凸透镜；光学组件32可以为菲涅尔透镜(例如为等效于凹透镜的菲涅尔透镜)。该种平视显示装置的工作原理与对应图2的平视显示装置基本相同，区别在于，利用凸透镜将光源1所发出的激光进行汇聚和/或准直，使得准直光线照射至MEMS反光镜2。
本公开的实施例所提供的平视显示装置至少部分地具有如下
有益效果：
相关技术中的扫描器的偏转角度在15°至20°左右，因此采用扫描器在扫描形成两幅或者更多幅图像并且避免图像重叠时，需要较长的光路，从而造成平视显示装置的体积较大。而在本公开的实施例中的平视显示装置包括了角度调节器，该角度调节器扩大了扫描器所形成的扫描光的出射角度。因此，可以在形成两幅或者更多幅图像并且避免图像重叠时缩短扫描光的光路，从而缩小所述平视显示装置的体积。
本公开的实施例还提供了一种行驶装置，该行驶装置包括挡风玻璃6和上述任一实施例所提供的上述平视显示装置，其中，所述所选择的区域为挡风玻璃6的部分区域。例如，行驶装置包括但不限于汽车、火车、飞机和轮船中的任意一种。
由于本公开的实施例的行驶装置包括本公开的实施例所提供的上述平视显示装置，因此可以在行驶装置的挡风玻璃6的部分区域上显示驾驶信息、危险警示等信息，以使驾驶员的驾驶更加方便和安全。
应当理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也属于本公开的保护范围。

Claims (22)

  1. 一种平视显示装置，包括：
    光源；
    扫描器，被配置为对所述光源所发出的光进行扫描，以形成扫描光；
    角度调节器，被配置为改变所述扫描光的出射角度；
    显示组件，被配置为根据来自所述角度调节器的扫描光形成图像；以及
    投影组件，被配置为将所述显示组件上所形成的图像投影在所选择的区域。
  2. 根据权利要求1所述的平视显示装置，其中，所述角度调节器，被配置为扩大所述扫描光的出射角度。
  3. 根据权利要求1所述的平视显示装置，其中，所述显示组件包括多个子显示组件；
    其中，所述多个子显示组件独立设置，且所述多个子显示组件到所述扫描器的距离彼此不同。
  4. 根据权利要求3所述的平视显示装置，其中，所述多个子显示组件中的至少部分子显示组件的尺寸彼此不同。
  5. 根据权利要求3所述的平视显示装置，其中，所述多个子显示组件中的每一个包括扩散板。
  6. 根据权利要求1所述的平视显示装置，其中，所述角度调节器包括光学组件，所述光学组件被配置为改变所述扫描光的出射角度。
  7. 根据权利要求6所述的平视显示装置，其中，所述角度调节器还包括准直器，所述准直器被配置为将所述光源所发出的光束进行汇聚和准直，以使所述扫描器对所述光源所发出的光进行扫描，从而形成扫描光。
  8. 根据权利要求7所述的平视显示装置，其中，所述准直器包括菲涅尔透镜，并且所述光学组件包括菲涅尔透镜。
  9. 根据权利要求7所述的平视显示装置，其中，所述准直器包括等效于凸透镜的菲涅尔透镜，并且所述光学组件包括等效于凹透镜的菲涅尔透镜。
  10. 根据权利要求7所述的平视显示装置，其中，所述准直器包括菲涅尔透镜，并且所述光学组件包括凹透镜。
  11. 根据权利要求10所述的平视显示装置，其中，所述准直器包括等效于凸透镜的菲涅尔透镜。
  12. 根据权利要求7所述的平视显示装置，其中，所述准直器包括凸透镜；所述光学组件包括菲涅尔透镜。
  13. 根据权利要求12所述的平视显示装置，其中，所述光学组件包括等效于凹透镜的菲涅尔透镜。
  14. 根据权利要求1所述的平视显示装置，其中，所述扫描器包括MEMS反光镜。
  15. 根据权利要求14所述的平视显示装置，其中，所述MEMS反光镜包括静电驱动式MEMS反光镜。
  16. 根据权利要求14所述的平视显示装置，其中，所述MEMS反光镜包括电磁驱动式MEMS反光镜。
  17. 根据权利要求14至16中任一项所述的平视显示装置，其中，所述MEMS反光镜包括两轴MEMS反光镜。
  18. 根据权利要求1所述的平视显示装置，其中，所述光源包括激光光源。
  19. 根据权利要求18所述的平视显示装置，其中，所述激光光源包括分别发出R、G、B三原色光束的多个激光源。
  20. 根据权利要求1所述的平视显示装置，其中，所述投影组件包括反射片。
  21. 一种行驶装置，包括挡风玻璃和根据权利要求1至20中任意一项所述的平视显示装置；其中，所述所选择的区域为所述挡风玻璃的部分区域。
  22. 根据权利要求21所述的行驶装置，其中，所述行驶装置包括汽车、火车、飞机和轮船中的任意一种。
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CN112530328B (zh) * 2020-11-30 2022-12-16 京东方科技集团股份有限公司 悬浮显示装置
WO2024000217A1 (zh) * 2022-06-29 2024-01-04 京东方科技集团股份有限公司 投影装置及显示***
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