A display system 1A includes a light deflector 13 that scans the light beams that are emitted from a light-source device 11 in the main scanning direction and the sub-scanning direction orthogonal to the main scanning direction to form an intermediate image 40 on a screen 15, the screen 15 that disperses the light, a front windshield 50 that reflects the diverging light diverging from the screen 15, and a free-form surface mirror 30 that projects the diverging light diverging from the screen 15 towards the screen 15 to form a virtual image 45. The screen 15 is arranged so as to satisfy the condition in the following equation: S*O*(M+O)/(T*E*M)≤1.95 where S denotes distance between a location of eyepoint of the viewer of the virtual image and the virtual image, E denotes distance between the location of eyepoint of the viewer of the virtual image and an image forming optical system that uses the diverging light to form the virtual image, M denotes distance between the light deflector and the intermediate image, and O denotes distance between the intermediate image and the image forming optical system, and T denotes distance between the virtual image and the image forming optical system, where each distance indicates length of an optical path that passes through a center of an image formed by the light when an object is observed from a reference eyepoint.


    Access

    Download


    Export, share and cite



    Title :

    Display device, display system, and mobile object


    Contributors:

    Publication date :

    2022-01-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS



    DISPLAY DEVICE, DISPLAY SYSTEM, AND MOBILE OBJECT

    NAKAMURA KENTO | European Patent Office | 2021

    Free access

    DISPLAY DEVICE, DISPLAY SYSTEM, AND MOBILE OBJECT

    TANABE HIROYUKI | European Patent Office | 2020

    Free access

    IMAGE DISPLAY DEVICE, IMAGE DISPLAY SYSTEM, HEAD-UP DISPLAY, AND MOBILE OBJECT

    KUSAFUKA KAORU | European Patent Office | 2019

    Free access

    DISPLAY DEVICE, AND MOBILE OBJECT INCLUDING DISPLAY DEVICE

    OKAYAMA HIROAKI / KUZUHARA SATOSHI / OGATA MASATO et al. | European Patent Office | 2018

    Free access

    DISPLAY DEVICE AND MOBILE OBJECT

    GOTOH TOKIKO | European Patent Office | 2022

    Free access