To provide an optical system, a lighting system, a display system, and a moving body that can easily achieve desired brightness distribution.SOLUTION: An optical system 100 includes a light guide member 1 and a plurality of prism pieces 3. The light guide member 1 has an incidence surface 10 to which light is made incident, and a first surface 11 and a second surface that are opposed to each other, the second surface being a light emission surface. The plurality of prism pieces 3 is provided on the first surface 11 and reflects the light that passes through an inside of the light guide member 1 toward the second surface. The plurality of prism pieces 3 includes two or more prism pieces 3 that are different in an inclination angle θ10 with respect to the incidence surface 10 according to a position in a first direction along at least both of the incidence surface 10 and the first surface 11. In the plurality of prism pieces 3, the inclination angle θ10 of the two or more prism pieces 3 is determined so as to direct the light emitted from the second surface 12 to the outside or to the inside in the first direction with respect to a reference light beam L100 as the position is closer to both ends in the first direction of the first surface 11.SELECTED DRAWING: Figure 6

    【課題】所望の輝度分布を実現しやすい光学システム、照明システム、表示システム及び移動体を提供する。【解決手段】光学システム100は、導光部材1と、複数のプリズム片3と、を備える。導光部材1は、光が入射する入射面10、並びに互いに対向する第1面11及び第2面を有し、第2面が光の出射面である。複数のプリズム片3は、第1面11に設けられて、導光部材1の内部を通る光を第2面に向けて反射する。複数のプリズム片3は、少なくとも入射面10及び第1面11の両方に沿った第1方向における位置によって、入射面10に対する傾斜角度θ10が異なる2以上のプリズム片3を含む。複数のプリズム片3は、第1面11の第1方向における両端に近い位置ほど、第2面12から出射される光を基準光線L100に対して第1方向の外側又は内側に向けるように、2以上のプリズム片3の傾斜角度θ10が決められている。【選択図】図6


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    Title :

    OPTICAL SYSTEM, LIGHTING SYSTEM, DISPLAY SYSTEM, AND MOVING BODY


    Additional title:

    光学システム、照明システム、表示システム及び移動体


    Contributors:

    Publication date :

    2021-11-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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