WO2024017038A1 - 一种图像生成装置、显示设备和交通工具 - Google Patents

一种图像生成装置、显示设备和交通工具 Download PDF

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Publication number
WO2024017038A1
WO2024017038A1 PCT/CN2023/105276 CN2023105276W WO2024017038A1 WO 2024017038 A1 WO2024017038 A1 WO 2024017038A1 CN 2023105276 W CN2023105276 W CN 2023105276W WO 2024017038 A1 WO2024017038 A1 WO 2024017038A1
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WO
WIPO (PCT)
Prior art keywords
image
indicator light
display device
generating device
source
Prior art date
Application number
PCT/CN2023/105276
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English (en)
French (fr)
Inventor
常志文
方志方
陈彦哲
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024017038A1 publication Critical patent/WO2024017038A1/zh

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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
    • G02B27/0101—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
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • 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

Definitions

  • the present application relates to the field of light display technology, and in particular to an image generating device, a display device and a vehicle.
  • Head-up display also known as parallel display system
  • HUD Head-up display
  • FIG 1 is a schematic diagram of a HUD display interface. As shown in Figure 1, the image displayed by the HUD includes information such as the distance to the vehicle ahead and the vehicle's driving direction.
  • the vehicle-mounted HUD images the human eye in the form of a virtual image and presents image information.
  • the optical design will ensure that the human eye can see the image displayed by the HUD within a certain range. This range is called the eye box. (eyebox).
  • eyebox This range is called the eye box.
  • different drivers have different heights and different front and rear positions of the seats.
  • the actual position of the human eyes is not necessarily located in the center of the eye box, which leads to the following situation in the HUD display effect:
  • the human eye is located outside the eye box and cannot see the image displayed by the HUD;
  • the human eye is located at the edge of the eye box. Slight shaking while driving will lose image information and degrade optical parameters (such as brightness, uniformity, etc.);
  • the human eye is located at the edge of the eye box. Slight shaking while driving will cause increased image distortion and make the driver feel dizzy.
  • the present application provides an image generation device, a display device and a vehicle, which can instruct the user to adjust the position of the human eye so that the position of the human eye is consistent with the center position of the image photobox of the display device, thereby improving the imaging effect.
  • this application provides an image generating device, including: an image source and an indicator light.
  • the image source is used to provide an image beam carrying image information
  • the indicator light is used to generate an indicator beam and indicate the center position of the eye box formed by the image beam through the indicator beam, and the luminous angle of the indicator light is smaller than the Describes the illumination angle of the image source.
  • a smaller indicator light beam is introduced into the eye box (that is, the luminous angle of the indicator light is smaller than the luminous angle of the image source), and the eye box of the indicator light beam can indicate the center position of the image beam eye box. Therefore, the driver can align the human eye position with the center position of the image photobox according to the instruction beam to obtain better imaging effects.
  • the image source is a liquid crystal display (LCD), and the indicator lights are provided on at least two edges of the LCD.
  • LCD liquid crystal display
  • the image source includes an image generation unit PGU and a diffusion screen, and the indicator light is provided on at least two edges of the diffusion screen.
  • the indicator lights can be arranged in various ways. They can be arranged on the periphery of the image source (such as LCD or diffusion screen) or inside the image source. It can be set up symmetrically or asymmetrically.
  • the indicator light is a light-emitting diode (LED), and a lens is provided behind the LED for collimating the indicator light beam.
  • LED light-emitting diode
  • the indicator light is a laser light source
  • a diffusion sheet is provided behind the laser light source to expand the indicator beam
  • the indicator light there are many ways to implement the indicator light, and it only suffices that the light-emitting angle of the indicator light is smaller than the light-emitting angle of the image source.
  • the luminous angle of the indicator light in the horizontal direction is greater than 17 degrees and less than 28 degrees, and the luminous angle of the indicator light in the vertical direction is less than 6 degrees.
  • the horizontal length of the eye box formed by the indicating beam is greater than 75 mm and less than 130 mm, and the vertical height is less than 20 mm.
  • the size of the eye box formed by the indicator light beam is smaller than the size of the eye box formed by the image light beam.
  • the present application provides a display device, including a main processor and an image generating device as in the first aspect or any possible implementation of the first aspect, where the main processor is used to control the image source. Generate the image beam and/or control the indicator light to generate the indicator beam.
  • an indicator light is provided in the image generation device, and the indicator light beam generated by the indicator light assists the driver in adjusting the seat position, or adjusts the position, angle, etc. of the display device, so that the position of the driver's human eyes matches the display
  • the center position of the image optical box of the device is aligned to achieve better imaging effects.
  • the display device may further include a reflective device configured to perform reflective imaging of the image beam and/or the indication beam projected by the image generating device.
  • the present application provides a display device, which is characterized in that it includes an image generating device as in the first aspect or any possible implementation of the first aspect, and the image generating device is The image beam and/or the indication beam are projected onto the windshield to form an image.
  • the present application provides a vehicle, which is characterized by including the display device described in the second or third aspect.
  • the present application provides an image generation method, including: providing an image beam carrying image information through an image source; generating an indication beam through an indicator light, and indicating the center position of the eye box formed by the image beam through the indication beam , the luminous angle of the indicator light is smaller than the luminous angle of the image source.
  • the luminous angle of the indicator light in the horizontal direction is greater than 17 degrees and less than 28 degrees, and the luminous angle of the indicator light in the vertical direction is less than 6 degrees.
  • the horizontal length of the eye box formed by the indicating beam is greater than 75 mm and less than 130 mm, and the vertical height is less than 20 mm.
  • the present application provides an image generating device, including: an image source and an indicator light.
  • the image source is used to provide an image beam carrying image information;
  • the indicator light is used to generate an indication beam and indicate the center position of the eye box formed by the image beam through the indication beam, and the divergence angle of the indication beam (or The divergence angle) is smaller than the divergence angle (or divergence angle) of the image beam.
  • Figure 1 is a schematic diagram of a HUD display interface
  • Figure 2 is a schematic structural diagram of a head-up display device 200 provided by an embodiment of the present application.
  • Figure 3 is a schematic structural diagram of another head-up display device 300 provided by an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of an image generation device provided by an embodiment of the present application.
  • FIGS 5a-5d are schematic diagrams of the position settings of several other indicator lights provided by embodiments of the present application.
  • FIGS. 6a and 6b are schematic structural diagrams of two indicator lights provided by embodiments of the present application.
  • Figure 7 is a schematic diagram of the luminous angle of the image source and the luminous angle of the indicator light provided by the present application;
  • Figure 8 is a schematic diagram comparing the eye box of the head-up display device and the eye box of the indicator light provided by the embodiment of the present application;
  • Figure 9 is a flow chart of an eye box adjustment method of a head-up display device provided by an embodiment of the present application.
  • Figure 10 is a schematic circuit diagram of a display device provided by an embodiment of the present application.
  • Figure 11 is a schematic functional framework diagram of a vehicle provided by an embodiment of the present application.
  • the image generation device, display device and vehicle provided by the embodiments of the present application will be introduced in detail below with reference to the accompanying drawings.
  • the image generation device provided in this embodiment can indicate the center position of the eye box formed by the image beam through the indicator light beam generated by the indicator light, so that the user can adjust the position of the human eye so that the position of the human eye is consistent with the center of the displayed image light box. The position remains consistent to improve the imaging effect.
  • the image generating device can be used alone, or can be integrated as a component in a display device, which includes but is not limited to projectors, head-up display devices, and car lights with display functions.
  • FIG. 2 is a schematic structural diagram of a head-up display device 200 provided by an embodiment of the present application.
  • the head-up display device 200 may include an image generating device 210 and one or more reflecting mirrors (such as reflecting mirror 220 and reflecting mirror 230 ).
  • the image generating device 210 is used to generate an image beam carrying image information.
  • the image beam passes through one or more reflectors and is projected onto the windshield 240 , and is reflected by the windshield to the human eye 250 , forming a virtual image at the human eye 250 .
  • FIG. 3 is a schematic structural diagram of another head-up display device 300 provided by an embodiment of the present application.
  • the image generation device in the head-up display device 300 shown in FIG. 3 may include a picture generation unit (picture generation unit, PGU) 211 and a diffusion screen 212.
  • PGU 211 also called an optical machine, is used to provide a light beam
  • the diffusion screen 212 is used to expand the light beam generated by PGU 211 so that the image light beam meets the divergence angle required by the design.
  • a small eyebox indicator light can be introduced into the head-up display device.
  • an indicator light is provided in the image generation device 210, and the indicator light beam generated by the indicator light is used to assist the driver in adjusting the seat position. , or adjust the position, angle, etc. of the head-up display device to align the position of the driver's eyes with the center of the image photobox of the head-up display device to achieve better imaging effects.
  • the technical solution of the embodiment of the present application does not require monitoring devices such as cameras and sensors, is simple to implement, and has low hardware cost.
  • FIG. 4 is a schematic structural diagram of an image generation device provided by an embodiment of the present application.
  • the image generating device may include an image source 410 and an indicator light 420 .
  • the image source 410 can be a liquid crystal display (LCD), a diffusion screen, a micro light-emitting diode (micro LED), a micro electromechanical light-emitting diode (micro organic light-emitting diode, micro OLED), etc.
  • the diffusion screen can adopt digital light processing (DLP), liquid crystal on silicon (LCoS), projection image plane and other implementation methods.
  • the indicator light 420 can use LED as the light source, or The user uses laser as the light source.
  • the image source 410 is used to provide an image beam carrying image information and generate a display image.
  • the indicator light 420 is used to generate an indicator light beam and indicate the center position of the eye box formed by the image beam through the indicator light beam, and the luminous angle of the indicator light is smaller than the luminous angle of the image source.
  • the indicator light 420 generates an indicator image.
  • the image source 410 includes a PGU and a diffusion screen as an example for description.
  • the area where the incident light generated by the PGU is projected onto the diffusion screen is divided into two parts: one part is used to generate an image beam, corresponding to the image light area, and the other part is used to generate an indication beam, corresponding to the indication light area.
  • the indication light area is located outside the image light area, and the divergence angle of the indication light beam is smaller than the divergence angle of the image light beam.
  • the eye box of the head-up display device refers to the range that allows the driver's eyes to see the displayed image.
  • the size of the eye box is usually 130mmx50mm. That is, the width of the eye box of the head-up display device in the horizontal direction is 130mm, and the corresponding image source's light-emitting angle in the horizontal direction is 28 degrees.
  • the vertical height of the eye box of the head-up display device is 50mm, and the corresponding image source has a luminous angle of 14 degrees in the vertical direction. Due to different driver heights, the eye box of the head-up display device can have a movement range of ⁇ 50mm in the vertical direction.
  • the eye box of the indicator light refers to the range within which the driver's eyes can see the indicator image.
  • the width of the eye box of the indicator light in the horizontal direction can be greater than 75mm and less than 130mm (or less than 100mm).
  • the corresponding indicator light is horizontally
  • the luminous angle in the direction can be greater than 17 degrees and less than 28 degrees.
  • the height of the eye box of the indicator light in the vertical direction can be less than 20mm, and the lighting angle of the corresponding indicator light in the vertical direction can be less than 6 degrees.
  • the eye box of the head-up display device may also be called an image light eye box (that is, an eye box formed by an image beam) or an eye box that displays images.
  • the eye box of the indicator light may also be called the eye box of the indicator light (that is, the eye box formed by the indicator light beam) or the eye box of the indicator image.
  • the luminous angle of the image source may be equivalent to the divergence angle (or diffusion angle) of the image light beam
  • the luminous angle of the indicator light may be equivalent to the divergence angle (or diffusion angle) of the indicator light beam.
  • FIGs 5a-5d are schematic diagrams of the position settings of several other indicator lights provided by embodiments of the present application.
  • the indicator lights 420 can be disposed on at least two edges of the LCD.
  • the image source 410 may further include a PGU and a diffusion screen, and the indicator light 420 may be disposed on at least two edges of the diffusion screen.
  • the indicator lights 420 may be disposed along the periphery of the LCD or diffusion screen.
  • the indicator lights 420 can also be arranged on any two sides of the LCD or diffusion screen.
  • the indicator lights 420 are arranged along both sides of the LCD or diffusion screen in the horizontal direction.
  • the indicator lights 420 are arranged along both sides of the LCD or diffusion screen in the vertical direction.
  • the indicator lights 420 can also be arranged at any two opposite corners of the LCD or diffusion screen.
  • indicator lights 420 are provided at the upper left corner and lower right corner of the LCD or diffusion screen. In other embodiments, the indicator light 420 can also be disposed at any position inside the LCD or diffusion screen.
  • Figures 6a and 6b are schematic structural diagrams of two indicator lights provided by embodiments of the present application.
  • the indicator light can use an LED light source 610, and the light beam emitted by the LED light source 610 is collimated through a lens 620 to reduce the luminous angle of the LED light source 610.
  • the indicator light can use a laser light source 630 , and the light-emitting angle of the laser light source 630 is expanded through a diffusion sheet 640 to increase the light-emission of the laser light source 630 .
  • the luminous angle of the indicator light is smaller than the luminous angle of the image source, that is, the divergence angle (or diffusion angle) of the indicator light beam is smaller than the divergence angle of the image light beam.
  • FIG. 7 is a schematic diagram of the light-emitting angle of the image source and the light-emitting angle of the indicator light provided by the present application. As shown in Figure 7, the luminous angle of the image source is larger than the luminous angle of the indicator light.
  • the divergence angle of light at the image source is proportional to the size of the eye box of the head-up display device.
  • the divergence angle of light at the indicator light is proportional to the eye box size of the indicator light. proportional to the size of the box.
  • FIG. 8 is a schematic diagram comparing the eye box of the head-up display device and the eye box of the indicator light provided by the embodiment of the present application.
  • the eye box 810 of the indicator light is located at the center position 820 of the eye box of the head-up display device, and the size of the eye box 810 of the indicator light is smaller than that of the head-up display device. Display device eye box 820 size.
  • Figure 9 is a flow chart of an eye box adjustment method of a head-up display device provided by an embodiment of the present application.
  • the driver gets in the car, starts the vehicle, and turns on the indicator light.
  • the driver adjusts the seat position and the position of the head-up display device until the driver can see the complete indication image produced by the indication beam.
  • the driver can adjust the optical path components such as the free-form mirror through the adjustment device of the head-up display device until the complete indication image is seen.
  • the driver turns on the image source of the head-up display device, turns off the indicator light, and enters the working mode of the head-up display device.
  • an indicator light with a smaller eye box is provided, and the indicator light box is located in the center of the image light box. Since the indicating light box is small, the driver can intuitively feel that the indicating image is missing when the indicating light box deviates from its position. The driver can obtain a complete instruction image by adjusting the height of the seat, the position and angle of the head-up display device, etc. At this time, turn off the indicator light and then turn on the image source. The position of the driver's eyes will be consistent with the center of the eye box of the head-up display device, thereby obtaining a better display effect and preventing the driver from feeling dizzy.
  • FIG. 10 is a schematic circuit diagram of a display device provided by an embodiment of the present application.
  • the circuit in the display device mainly includes a main processor (host CPU) 1001, an external memory interface 1002, an internal memory 1003, an audio module 1004, a video module 1005, a power module 1006, and a wireless communication module 1007.
  • the main processor 1001 and its peripheral components, such as external memory interface 1002, internal memory 1003, audio module 1004, video module 1005, power module 1006, wireless communication module 1007, I/O interface 1008, video interface 1009, display circuit 1010 can be connected via bus.
  • Main processor 1001 may be called a front-end processor.
  • circuit diagram schematically illustrated in the embodiment of the present application does not constitute a specific limitation on the display device.
  • the display device may include more or fewer components than shown in the figures, or some components may be combined, or some components may be separated, or may be arranged differently.
  • the components illustrated may be implemented in hardware, software, or a combination of software and hardware.
  • the main processor 1001 includes one or more processing units.
  • the main processor 1001 may include an application processor (Application Processor, AP), a modem processor, a graphics processor (Graphics Processing Unit, GPU), an image processing unit. Image Signal Processor (ISP), controller, video codec, Digital Signal Processor (DSP), baseband processor, and/or Neural-Network Processing Unit (NPU) )wait.
  • application processor Application Processor
  • AP Application Processor
  • modem processor a graphics processor
  • GPU Graphics Processing Unit
  • ISP Image Signal Processor
  • DSP Digital Signal Processor
  • NPU Neural-Network Processing Unit
  • different processing units can be independent devices or integrated in one or more processors.
  • the main processor 1001 may also be provided with a memory for storing instructions and data.
  • the memory in main processor 1001 is cache memory. This memory can store instructions or data that have just been used or recycled by the main processor 1001 . If the main processor 1001 needs to use the instructions or data again, it can be directly called from the memory. Repeated access is avoided and the waiting time of the main processor 1001 is reduced, thus improving the efficiency of the system.
  • the display device may also include a plurality of input/output (I/O) interfaces 1008 connected to the main processor 1001 .
  • the interface 1008 may include 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, and a universal asynchronous receiver and transmitter (Universal Asynchronous Receiver/Transmitter (UART) 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
  • UART Universal Asynchronous Receiver/Transmitter
  • MIPI Mobile Industry Processor Interface
  • GPIO General-Purpose Input/Output
  • SIM Subscriber Identity Module
  • USB Universal
  • the above-mentioned I/O interface 1008 can be connected to devices such as a mouse, touch pad, keyboard, camera, speaker/speaker, microphone, etc., or can be connected to physical buttons on the display device (such as volume keys, brightness adjustment keys, power on/off keys, etc.).
  • the external memory interface 1002 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the display device.
  • the external memory card communicates with the main processor 1001 through the external memory interface 1002 to implement the data storage function.
  • Internal memory 1003 may be used to store computer executable program code, which includes instructions.
  • the internal memory 1003 may include a program storage area and a data storage area. Among them, the stored program area can store the operating system, to One less application required for functions (such as call function, time setting function, etc.), etc.
  • the storage data area can store data created during the use of the display device (such as phone book, world time, etc.).
  • the internal memory 1003 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.
  • the main processor 1001 executes various functional applications and data processing of the display device by executing instructions stored in the internal memory 1003 and/or instructions stored in a memory provided in the main processor 1001 .
  • the display device can implement audio functions through the audio module 1004 and application processor. Such as music playback, phone calls, etc.
  • 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 signals.
  • the audio module 1004 can also be used to encode and decode audio signals, such as playing or recording.
  • the audio module 1004 may be disposed in the main processor 1001, or some functional modules of the audio module 1004 may be disposed in the main processor 1001.
  • the video interface 1009 can receive externally input audio and video signals, which can specifically be a High Definition Multimedia Interface (HDMI), a Digital Video Interface (Digital Visual Interface, DVI), or a Video Graphics Array (VGA). , display port (Display port, DP), etc., the video interface 1009 can also output video externally.
  • HDMI High Definition Multimedia Interface
  • DVI Digital Video Interface
  • VGA Video Graphics Array
  • display port Display port, DP
  • the video interface 1009 can also output video externally.
  • the video interface 1009 can receive speed signals and power signals input from peripheral devices, and can also receive externally input video signals.
  • the video interface 1009 can receive video signals input from an external computer or terminal device.
  • 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 collected by the display device, such as H.264 encoding of the video collected by an external camera.
  • the main processor 1001 can also decode the video input from the video interface 1009, and then output the decoded image signal to the display circuit 1010.
  • Display circuit 1010 and modulator 1011 are used to provide a display image.
  • the video interface 1009 receives an externally input video source signal.
  • the video module 1005 decodes and/or digitizes the signal and outputs one or more image signals to the display circuit 1010.
  • the display circuit 1010 drives the modulation according to the input image signal.
  • the detector 1011 images the incident light beam and then outputs a display image.
  • the main processor 1001 can also output one or more image signals to the display circuit 1010 .
  • the display circuit 1010 may also be called a driving circuit.
  • the power module 1006 is used to provide power to the main processor 1001 and the light source 1012.
  • the power module 1006 may include a rechargeable battery, and the rechargeable battery may provide power to the main processor 1001 and the light source 1012.
  • the light emitted by the light source 1012 can be transmitted to the modulator 1011 for imaging, thereby forming a graphic display image.
  • the wireless communication module 1007 can enable the display device to communicate wirelessly with the outside world, and can provide Wireless Local Area Networks (WLAN) (such as Wireless Fidelity (Wi-Fi) network), Bluetooth (Bluetooth, BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR) and other wireless communication solutions.
  • WLAN Wireless Local Area Networks
  • Wi-Fi Wireless Fidelity
  • BT Bluetooth
  • GNSS Global Navigation Satellite System
  • FM Frequency Modulation
  • NFC Near Field Communication
  • IR Infrared
  • 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 through the antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the main processor 1001 .
  • the wireless communication module 1007 can also receive the signal to be sent from the main processor 1001, frequency modulate it, amplify it, and convert it into electromagnetic waves through the antenna for
  • the video data decoded by the video module 1005 can also be received wirelessly through the wireless communication module 1007 or read from an external memory.
  • the display device can be read from an external memory through a wireless LAN in the car.
  • the terminal device or car entertainment system receives the video data, and the display device can also read the external memory Stored audio and video data.
  • FIG. 11 is a schematic diagram of a possible functional framework of a vehicle provided by an embodiment of the present application.
  • the functional framework of the vehicle may include various subsystems, such as the sensor system 12 in the figure, the control system 14, one or more peripheral devices 16 (one is shown as an example in the figure), a power supply 18.
  • Computer system 20 and display system 22 may also include other functional systems, such as an engine system that provides power for the vehicle, etc., which is not limited in this application.
  • the sensor system 12 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 (GPS), vehicle speed sensor, inertial measurement unit (IMU), radar unit, laser rangefinder, camera device, wheel speed sensor, Steering sensors, gear sensors, or other components used for automatic detection, etc. are not limited in this application.
  • the control system 14 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 14 may also include components such as a throttle controller and an engine controller for controlling the driving speed of the vehicle, which are not limited in this application.
  • Peripheral device 16 may include several elements, such as a communication system, a touch screen, a user interface, a microphone and a speaker as shown, among others.
  • the communication system is used to realize network communication between vehicles and other devices other than vehicles.
  • 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 vehicles and other devices through network cables or optical fibers.
  • the power source 18 represents a system that provides power or energy to the vehicle, which may include, but is not limited to, rechargeable lithium batteries or lead-acid batteries, etc. In practical applications, one or more battery components in the power supply are used to provide electric energy or energy for starting the vehicle. The type and material of the power supply are not limited in this application.
  • the computer system 20 may include one or more processors 2001 (one processor is shown as an example) and a memory 2002 (which may also be referred to as a storage device).
  • the memory 2002 may also be inside the computer system 20 or outside the computer system 20 , for example, as a cache in a vehicle, etc., which is not limited in this application. in,
  • Processor 2001 may include one or more general-purpose processors, such as a graphics processing unit (GPU).
  • the processor 2001 may be used to run relevant programs or instructions corresponding to the programs stored in the memory 2002 to implement corresponding functions of the vehicle.
  • the memory 2002 may include volatile memory (volatile memory), such as random access memory (RAM); the memory may also include non-volatile memory (non-vlatile memory), such as read-only memory (read-only memory). memory (ROM), flash memory (flash memory), mechanical hard disk drive (HDD) or solid-state drive (SSD); the memory 2002 may also include a combination of the above types of memory.
  • volatile memory volatile memory
  • non-vlatile memory non-volatile memory
  • read-only memory read-only memory
  • memory read-only memory
  • ROM read-only memory
  • flash memory flash memory
  • HDD mechanical hard disk drive
  • SSD solid-state drive
  • the memory 2002 may also include a combination of the above types of memory.
  • the memory 2002 can be used to store a set of program codes or instructions corresponding to the program codes, so that the processor 2001 can call the program codes or instructions stored in the memory 2002 to implement corresponding functions of the vehicle. This function includes but is not limited to some or all of the functions in the vehicle function framework diagram shown in
  • the memory 2002 may also store information such as road maps, driving routes, sensor data, and the like.
  • the computer system 20 can be combined with other elements in the vehicle functional framework diagram, such as sensors in the sensor system, GPS, etc., to implement vehicle-related functions.
  • the computer system 20 can control the driving direction or driving speed of the vehicle based on data input from the sensor system 12 , which is not limited in this application.
  • Display system 22 may include several elements, such as the illustrated windshield, controls, and a heads-up display.
  • the controller is used to generate images according to user instructions (for example, generate images containing vehicle status such as vehicle speed, power/fuel level, and images with augmented reality (AR) content), and send the image to the head-up display for display; head-up display It may include an image generating device and a reflector combination, and the front glass is used to cooperate with the head-up display to realize the light path of the head-up display system, so that the target image is presented in front of the driver.
  • the functions of some components in the head-up display system can also be implemented by other subsystems of the vehicle.
  • the controller can also be a component in the control system.
  • Figure 11 of this application shows that it includes four subsystems.
  • the sensor system 12, the control system 14, the computer system 20 and the display system 22 are only examples and do not constitute a limitation.
  • vehicles can combine several components in the vehicle according to different functions to obtain subsystems with corresponding different functions.
  • the vehicle may include more or fewer systems or components, which is not limited by this application.
  • the above-mentioned means of transportation can be cars, trucks, motorcycles, buses, boats, airplanes, helicopters, lawn mowers, recreational vehicles, playground vehicles, construction equipment, trams, golf carts, trains, and handcarts, etc.,
  • the embodiments of this application are not particularly limited.

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Abstract

本申请公开了一种图像生成装置、显示设备、交通工具，属于光显示技术领域。该图像生成装置包括像源和指示灯。其中，像源用于提供携带图像信息的图像光束；指示灯用于产生指示光束，并通过指示光束指示所述图像光束形成的眼盒的中心位置，所述指示灯的发光角度小于所述像源的发光角度。本申请通过引入眼盒较小的指示光束，使驾驶员人眼的位置与显示设备的图像光眼盒的中心位置对准，获得较佳的成像效果。

Description

一种图像生成装置、显示设备和交通工具
本申请要求于2022年7月22日提交中国国家知识产权局、申请号为202210874475.8、申请名称为“一种图像生成装置、显示设备和交通工具”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
本申请涉及光显示技术领域，特别涉及一种图像生成装置、显示设备和交通工具。
背景技术
抬头显示(Head up display，HUD)，又称为平行显示系统，是指以驾驶员为中心的多功能仪表盘。它的作用是把时速、导航等重要的行车信息，投影到驾驶员前面的风挡玻璃上，让驾驶员尽量做到不低头、不转头就能看到时速、导航等重要的驾驶信息。图1为一种HUD的显示界面示意图，如图1所示，HUD显示的图像包括与前方车辆的车距、车辆行驶方向等信息。
车载HUD以虚像的形式在人眼处成像，呈现图像信息。为了确保在车辆行驶的过程中，人眼的小范围晃动不会影响图像的显示质量，在光学设计时会保证人眼位于一定范围之内均可以看到HUD显示的图像，该范围称作眼盒(eyebox)。然而不同的驾驶员身高不同，座椅前后位置不同，导致实际人眼的位置不一定位于眼盒中心，进而导致对HUD显示效果会出现如下情况：
1.人眼位于眼盒之外，无法看到HUD显示的图像；
2.人眼位于眼盒边缘，行驶时轻微晃动会丢失图像信息，使光学参数(比如亮度、均匀性等)劣化；
3.人眼位于眼盒边缘，行驶时轻微晃动会导致图像畸变增大，使驾驶员出现眩晕感。
因此，有必要解决因驾驶员的高度、位置不同，导致驾驶员的眼睛与HUD的图像光的眼盒中心位置不匹配的问题。
发明内容
本申请提供了一种图像生成装置、显示设备和交通工具，能够指示使用者调节人眼位置，使人眼的位置与显示设备的图像光眼盒的中心位置保持一致，提高成像效果。
第一方面，本申请提供了一种图像生成装置，包括：像源和指示灯。其中，像源，用于提供携带图像信息的图像光束；指示灯，用于产生指示光束，并通过指示光束指示所述图像光束形成的眼盒的中心位置，所述指示灯的发光角度小于所述像源的发光角度。
本申请实施例中，引入眼盒较小的指示光束(即指示灯的发光角度小于像源的发光角度)，指示光束的眼盒能够指示图像光束眼盒的中心位置。因此，驾驶员根据指示光束可以使人眼位置与图像光眼盒的中心位置对准，获得较佳的成像效果。
一种可能的实现方式中，所述像源为液晶显示器LCD，所述指示灯设置于所述LCD的至少两侧边缘。
一种可能的实现方式中，所述像源包括图像生成单元PGU和扩散屏，所述指示灯设置于所述扩散屏的至少两侧边缘。
本申请实施例中，指示灯的设置方式有多种，可以设置于像源(如LCD或扩散屏)的外围，也可以设置于像源的内部。可以呈对称设置，也可以呈非对称设置。
一种可能的实现方式中，所述指示灯为发光二极管LED，所述LED之后还设置透镜，用于对所述指示光束进行准直。
一种可能的实现方式中，所述指示灯为激光光源，所述激光光源之后还设置扩散片，用于对所述指示光束进行扩束。
本申请实施例中，指示灯的实现方式有多种，能够实现指示灯的发光角度小于像源的发光角度即可。
一种可能的实现方式中，所述指示灯在水平方向的发光角度大于17度且小于28度，所述指示灯在竖直方向的发光角度小于6度。
一种可能的实现方式中，所述指示光束形成的眼盒水平长度大于75mm且小于130mm，竖直高度小于20mm。
本申请实施例中，由于指示灯的发光角度小于像源的发光角度，指示光束形成的眼盒大小小于图像光束形成的眼盒大小。通过指示光束指示图像光束形成的眼盒的中心位置，可以辅助驾驶员调节人眼的位置与图像光束形成的眼盒的中心位置对准，达到较佳的成像效果。
第二方面，本申请提供了一种显示设备，包括主处理器以及如第一方面或第一方面任意一种可能的实现方式中的图像生成装置，所述主处理器用于控制所述像源产生所述图像光束和/或控制所述指示灯产生所述指示光束。
本申请实施例中，在图像生成装置中设置指示灯，通过指示灯产生的指示光束来辅助驾驶员调节座椅位置，或调节显示设备的位置、角度等，使驾驶员人眼的位置与显示设备的图像光眼盒的中心位置对准，达到较佳的成像效果。
一种可能的实现方式中，显示设备还可以包括反射器件，所述反射器件用于对所述图像生成装置投射的所述图像光束和/或所述指示光束进行反射成像。
第三方面，本申请提供了一种显示设备，一种显示设备，其特征在于，包括如第一方面或第一方面任意一种可能的实现方式中的图像生成装置，所述图像生成装置用于将所述图像光束和/或所述指示光束投射到挡风玻璃，以形成图像。
第四方面，本申请提供了一种交通工具，其特征在于，包括如第二方面或第三方面所述的显示设备。
第五方面，本申请提供了一种图像生成方法，包括：通过像源提供携带图像信息的图像光束；通过指示灯产生指示光束，并通过指示光束指示所述图像光束形成的眼盒的中心位置，所述指示灯的发光角度小于所述像源的发光角度。
一种可能的实现方式中，所述指示灯在水平方向的发光角度大于17度且小于28度，所述指示灯在竖直方向的发光角度小于6度。
一种可能的实现方式中，所述指示光束形成的眼盒水平长度大于75mm且小于130mm，竖直高度小于20mm。
第六方面，本申请提供了一种图像生成装置，包括：像源和指示灯。其中，像源，用于提供携带图像信息的图像光束；指示灯，用于产生指示光束，并通过指示光束指示所述图像光束形成的眼盒的中心位置，所述指示光束的发散角(或扩散角)小于所述图像光束的发散角(或扩散角)。
附图说明
图1是一种HUD的显示界面示意图；
图2是本申请实施例提供的一种抬头显示设备200的结构示意图；
图3是本申请实施例提供的另一种抬头显示设备300的结构示意图；
图4是本申请实施例提供的一种图像生成装置的结构示意图；
图5a-图5d是本申请实施例提供的其他几种指示灯的位置设置方式示意图；
图6a、6b是本申请实施例提供的两种指示灯的结构示意图；
图7是本申请供的像源的发光角度、指示灯的发光角度示意图；
图8是本申请实施例提供的抬头显示设备的眼盒和指示灯的眼盒的对比示意图；
图9是本申请实施例提供的抬头显示设备的眼盒调节方法流程图；
图10是本申请实施例提供的显示设备的电路示意图；
图11是本申请实施例提供的一种交通工具的功能框架示意图。
具体实施方式
下面结合附图对本申请实施例提供图像生成装置、显示设备以及交通工具进行进行详细介绍。本实施例提供的图像生成装置可以通过指示灯产生的指示光束指示图像光束形成的眼盒的中心位置，以使得使用者调节人眼位置，使人眼的位置与显示的图像光眼盒的中心位置保持一致，提高成像效果。图像生成装置可以单独使用，也可以作为部件集成在显示设备中，显示设备包括但不限于投影仪、抬头显示设备和具有显示功能的车灯等。
本申请实施例以抬头显示设备为例进行说明。图2是本申请实施例提供的一种抬头显示设备200的结构示意图。如图2所示，抬头显示设备200可以包括图像生成装置210、一个或多个反射镜(如反射镜220、反射镜230)。图像生成装置210用于产生携带图像信息的图像光束，图像光束经过一个或多个反射镜之后投射到挡风玻璃240上，经挡风玻璃反射至人眼250，在人眼250处形成虚像。图3是本申请实施例提供的另一种抬头显示设备300的结构示意图。与图2所示的抬头显示设备200的区别在于，图3所示的抬头显示设备300中的图像生成装置可以包括图像生成单元(picture generation unit，PGU)211和扩散屏212。其中，PGU 211又称为光机，用于提供一光束，扩散屏212用于对PGU 211产生的光束进行扩束，使得图像光束满足设计要求的发散角。
本申请实施例中，可以在抬头显示设备引入眼盒(eyebox)较小的指示光，例如，在图像生成装置210中设置指示灯，通过指示灯产生的指示光束来辅助驾驶员调节座椅位置，或调节抬头显示设备的位置、角度等，使驾驶员人眼的位置与抬头显示设备的图像光眼盒的中心位置对准，达到较佳的成像效果。相比于传统的方案，本申请实施例的技术方案无需配置摄像头、传感器等监测器件，实现简单，硬件成本低。
图4是本申请实施例提供的一种图像生成装置的结构示意图。如图4所示，图像生成装置可以包括像源410和指示灯420。其中，像源410可以采用液晶显示器(liquid crystal display，LCD)、扩散屏、微发光二极管(micro light-emitting diode，micro LED)、微机电发光二极管(micro organic light-emitting diode，micro OLED)等一种或多种实现方式。其中，扩散屏可以采用数字光处理(digital light processing，DLP)、硅基液晶(liquid crystal on silicon，LCoS)、投影像面等实现方式。指示灯420可以采用LED作为光源，或 者采用激光作为光源。像源410用于提供携带图像信息的图像光束，并生成显示图像。指示灯420用于产生指示光束，并通过指示光束指示图像光束形成的眼盒的中心位置，且指示灯的发光角度小于像源的发光角度。指示灯420生成指示图像。以像源410包括PGU和扩散屏为例进行说明。PGU产生的入射光投射到扩散屏的区域分成两部分：一部分用于产生图像光束，对应图像光区域，另一部分是用于产生指示光束，对应指示光区域。例如，指示光区域位于图像光区域的外侧，并且指示光束的发散角小于图像光束的发散角。
本申请实施例中，抬头显示设备的眼盒指的是：允许驾驶员的眼睛能够看到显示图像的范围，眼盒尺寸大小通常是130mmx50mm。即抬头显示设备的眼盒在水平方向上的宽度是130mm，对应像源在水平方向上的发光角度是28度。抬头显示设备的眼盒在竖直方向的高度是50mm，对应像源在竖直方向上的发光角度是14度。由于不同驾驶员的身高，抬头显示设备的眼盒在垂直方向上可以有±50mm的移动范围。指示灯的眼盒指的是：驾驶员的眼睛能够看到指示图像的范围，指示灯的眼盒在水平方向上的宽度可以大于75mm，且小于130mm(或者小于100mm)，对应指示灯在水平方向上的发光角度可以大于17度，且小于28度。指示灯的眼盒在竖直方向的高度可以小于20mm，对应指示灯在竖直方向上的发光角度可以小于6度。本申请实施例中，抬头显示设备的眼盒也可以称为图像光眼盒(即图像光束形成的眼盒)或者显示图像的眼盒。指示灯的眼盒也可以称为指示光眼盒(即指示光束形成的眼盒)或者指示图像的眼盒。像源的发光角度可以等效于图像光束的发散角(或扩散角)，指示灯的发光角度可以等效于指示光束的发散角(或扩散角)。
指示灯的位置可以有多种设置方式。图5a-图5d是本申请实施例提供的其他几种指示灯的位置设置方式示意图。例如，像源410采用LCD实现时，指示灯420可以设置在LCD的至少两侧边缘。像源410还可以包括PGU和扩散屏，指示灯420可以设置在扩散屏的至少两侧边缘。如图5a所示，指示灯420可以沿LCD或扩散屏的外围四周设置。指示灯420还可以设置在LCD或扩散屏的任意两侧。如图5b所示，指示灯420沿LCD或扩散屏的水平方向两侧设置。如图5c所示，指示灯420沿LCD或扩散屏的竖直方向两侧设置。指示灯420还可以设置在LCD或扩散屏的任意两个对角。如图5d所示，指示灯420设置在LCD或扩散屏的左上角和右下角。在其他的实施方式中，指示灯420还可以设置在LCD或扩散屏的内部的任意位置。
图6a、6b是本申请实施例提供的两种指示灯的结构示意图。如图6a所示，指示灯可以采用LED光源610，通过透镜620对LED光源发610出的光束进行准直，以减小LED光源610的发光角度。如图6b所示，指示灯可以采用激光光源630，通过扩散片640对激光光源630的发光角度进行扩束，以增大激光光源630的发光。
不管指示灯采用何种设置方式，指示灯的发光角度小于像源的发光角度，即，指示光束的发散角(或者称为扩散角)小于图像光束的发散角。图7是本申请供的像源的发光角度、指示灯的发光角度示意图。如图7所示，像源的发光角度大于指示灯的发光角度。
由光路原理可知，在像源(如LED或扩散屏)处光的发散角的大小与抬头显示设备的眼盒的大小成正比，或者说，在指示灯处光的发散角与指示灯的眼盒的大小成正比。图8是本申请实施例提供的抬头显示设备的眼盒和指示灯的眼盒的对比示意图。如图8所示，由于指示光束的中心光线和图像光束的中心光线相互平行，因此指示灯的眼盒810位于抬头显示设备的眼盒的中心位置820，并且指示灯的眼盒810大小小于抬头显示设备的眼盒820大小。
图9是本申请实施例提供的抬头显示设备的眼盒调节方法流程图。如图9所示，首先，S910，驾驶员上车，启动车辆，开启指示灯。S920，驾驶员调整座椅位置和抬头显示设备的位置，直到驾驶员能够看到完整的指示光束产生的指示图像。为了能够看到完整的指示图像， 驾驶员可以通过抬头显示设备的调节装置调节自由曲面镜等光路元件，直到看到完整的指示图像。S920，驾驶员开启抬头显示设备的像源，关闭指示灯，进入抬头显示设备工作模式。本申请提供的实施例，在抬头显示设备中，设置一个眼盒较小的指示光，指示光眼盒位于图像光眼盒的中心。由于指示光眼盒较小，驾驶员在偏离指示光眼盒位置时能直观感觉到指示图像会有缺失。驾驶员可以通过调整座椅高度、抬头显示设备的位置和角度等获得完整的指示图像。此时，关闭指示灯，再开启像源，驾驶员人眼的位置与抬头显示设备眼盒的中心位置一致，从而获得更好的显示效果，避免驾驶员出现眩晕感。
图10是本申请实施例提供的显示设备的电路示意图。如图10所示，显示设备中的电路主要包括包含主处理器(host CPU)1001，外部存储器接口1002，内部存储器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、显示电路1010和调制器1011等。其中，主处理器1001与其周边的元件，例如外部存储器接口1002，内部存储器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、显示电路1010可以通过总线连接。主处理器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设备的具体限定。在本申请另一些实施例中，显示设备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，主处理器1001包括一个或多个处理单元，例如：主处理器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。
主处理器1001中还可以设置存储器，用于存储指令和数据。在一些实施例中，主处理器1001中的存储器为高速缓冲存储器。该存储器可以保存主处理器1001刚用过或循环使用的指令或数据。如果主处理器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，减少了主处理器1001的等待时间，因而提高了系统的效率。
在一些实施例中，显示设备还可以包括多个连接到主处理器1001的输入输出(Input/Output，I/O)接口1008。接口1008可以包括集成电路(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、触摸板、键盘、摄像头、扬声器/喇叭、麦克风等设备，也可以连接显示设备上的物理按键(例如音量键、亮度调节键、开关机键等)。
外部存储器接口1002可以用于连接外部存储卡，例如Micro SD卡，实现扩展显示设备的存储能力。外部存储卡通过外部存储器接口1002与主处理器1001通信，实现数据存储功能。
内部存储器1003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。内部存储器1003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，时间设置功能等)等。存储数据区可存储显示设备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1003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。主处理器1001通过运行存储在内部存储器1003的指令，和/或存储在设置于主处理器1001中的存储器的指令，执行显示设备的各种功能应用以及数据处理。
显示设备可以通过音频模块1004以及应用处理器等实现音频功能。例如音乐播放，通话等。
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可以设置于主处理器1001中，或将音频模块1004的部分功能模块设置于主处理器1001中。
视频接口1009可以接收外部输入的音视频信号，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(Display port，DP)等，视频接口1009还可以向外输出视频。当显示设备作为抬头显示使用时，视频接口1009可以接收周边设备输入的速度信号、电量信号，还可以接收外部输入的视频信号。当显示设备作为投影仪使用时，视频接口1009可以接收外部电脑或终端设备输入的视频信号。
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设备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，主处理器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1010。
显示电路1010和调制器1011用于提供显示图像。在本实施例中，视频接口1009接收外部输入的视频源信号，视频模块1005进行解码和/或数字化处理后输出一路或多路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调制器1011将入射的光束进行成像，进而输出显示图像。此外，主处理器1001也可以向显示电路1010输出一路或多路图像信号。在本实施例中，显示电路1010也可以称为驱动电路。
电源模块1006用于为主处理器1001和光源1012提供电源，电源模块1006中可以包括可充电电池，可充电电池可以为主处理器1001和光源1012提供电源。光源1012发出的光可以传输到调制器1011进行成像，从而形成图显示图像。
无线通信模块1007可以使得显示设备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主处理器1001。无线通信模块1007还可以从主处理器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外部存储器中读取，例如显示设备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，显示设备还可以读取外部存储器中 存储的音视频数据。
上述显示设备可以安装在交通工具上，请参见图11，图11是本申请实施例提供的一种交通工具的一种可能的功能框架示意图。
如图11所示，交通工具的功能框架中可包括各种子系统，例如图示中的传感器系统12、控制系统14、一个或多个外围设备16(图示以一个为例示出)、电源18、计算机系统20和显示系统22。可选地，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等等，本申请这里不做限定。
其中，传感器系统12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，本申请并不做限定。
控制系统14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。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，本申请不做限定。
外围设备16可包括若干元件，例如图示中的通信系统、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18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均由计算机系统20控制实现。计算机系统20可包括一个或多个处理器2001(图示以一个处理器为例示出)和存储器2002(也可称为存储装置)。在实际应用中，该存储器2002也在计算机系统20内部，也可在计算机系统20外部，例如作为交通工具中的缓存等，本申请不做限定。其中，
处理器2001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2001可用于运行存储器2002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2002可以包括易失性存储器(volatile memory)，例如随机存取存储器(random access memory，RAM)；存储器也可以包括非易失性存储器(non-vlatile memory)，例如只读存储器(read-only memory，ROM)、快闪存储器(flash memory)、机械硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器2002还可以包括上述种类的存储器的组合。存储器2002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2001调用存储器2002中存储的程序代码或指令以实现车辆的相应功能。该功能包括但不限于图11所示的车辆功能框架示意图中的部分功能或全部功能。本申请中，存储器2002中可存储一组用于车辆控制的程序代码，处理器2001调用该程序代码可控制车辆安全行驶。
可选地，存储器2002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20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20可基于传感器系统12的数据输入控制交通工具的行驶方向或行驶速度等，本申请不做限定。
显示系统22可包括若干元件，例如图示出的前挡玻璃，控制器和抬头显示器。控制器用于根据用户指令生成图像(例如生成包含车速、电量/油量等车辆状态的图像以及增强现实(augmented reality，AR)内容的图像)，并将该图像发送至抬头显示器进行显示；抬头显示器可以包括图像生成装置、反射镜组合，前挡玻璃用于配合抬头显示器以实现抬头显示系统的光路，以使在驾驶员前方呈现目标图像。需要说明的是，抬头显示系统中的部分元件的功能也可以由车辆的其它子系统来实现，例如，控制器也可以为控制系统中的元件。
其中，本申请图11示出包括四个子系统，传感器系统12、控制系统14、计算机系统20和显示系统22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系统或元件，本申请不做限定。
上述交通工具可以为小汽车、卡车、摩托车、公共汽车、船、飞机、直升飞机、割草机、娱乐车、游乐场车辆、施工设备、电车、高尔夫球车、火车、和手推车等，本申请实施例不做特别的限定。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现在“包括”或者“包含”前面的元件或者物件涵盖出现在“包括”或者“包含”后面列举的元件或者物件及其等同，并不排除其他元件或者物件。“A和/或B”表示存在以下三种情况：A、B、以及A和B。
以上所述仅为本申请一个实施例，并不用以限制本申请，凡在本申请的基础上所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (14)

  1. 一种图像生成装置，其特征在于，包括：
    像源，用于提供携带图像信息的图像光束；
    指示灯，用于产生指示光束，并通过指示光束指示所述图像光束形成的眼盒的中心位置，所述指示灯的发光角度小于所述像源的发光角度。
  2. 根据权利要求1所述的图像生成装置，其特征在于，
    所述像源为液晶显示器LCD，所述指示灯设置于所述LCD的至少两侧边缘。
  3. 根据权利要求1所述的图像生成装置，其特征在于，
    所述像源包括图像生成单元PGU和扩散屏，所述指示灯设置于所述扩散屏的至少两侧边缘。
  4. 根据权利要求1-3任一所述的图像生成装置，其特征在于，所述指示灯为发光二极管LED，所述LED之后还设置透镜，用于对所述指示光束进行准直。
  5. 根据权利要求1-3任一所述的图像生成装置，其特征在于，所述指示灯为激光光源，所述激光光源之后还设置扩散片，用于对所述指示光束进行扩束。
  6. 根据权利要求1-5任一所述的图像生成装置，其特征在于，所述指示灯在水平方向的发光角度大于17度且小于28度，所述指示灯在竖直方向的发光角度小于6度。
  7. 根据权利要求1-5任一所述的图像生成装置，其特征在于，所述指示光束形成的眼盒水平长度大于75mm且小于130mm，竖直高度小于20mm。
  8. 一种显示设备，其特征在于，包括主处理器以及如权利要求1至7任一项所述的图像生成装置，所述主处理器用于控制所述像源产生所述图像光束和/或控制所述指示灯产生所述指示光束。
  9. 根据权利要求8所述的显示设备，其特征在于，还包括：
    反射器件，所述反射器件用于对所述图像生成装置投射的所述图像光束和/或所述指示光束进行反射成像。
  10. 一种显示设备，其特征在于，包括如权利要求1至7任一项所述的图像生成装置，所述图像生成装置用于将所述图像光束和/或所述指示光束投射到挡风玻璃，以形成图像。
  11. 一种交通工具，其特征在于，包括如权利要求8-10任一项所述的显示设备。
  12. 一种图像生成方法，其特征在于，包括：
    通过像源提供携带图像信息的图像光束；
    通过指示灯产生指示光束，并通过指示光束指示所述图像光束形成的眼盒的中心位置，所述指示灯的发光角度小于所述像源的发光角度。
  13. 根据权利要求12所述的图像生成方法，其特征在于，所述指示灯在水平方向的发光角度大于17度且小于28度，所述指示灯在竖直方向的发光角度小于6度。
  14. 根据权利要求12所述的图像生成方法，其特征在于，所述指示光束形成的眼盒水平长度大于75mm且小于130mm，竖直高度小于20mm。
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