To provide a lens for illumination that can suppress unpleasant glossiness, can be constituted compactly, and is improved in fittability in a limited space.SOLUTION: A lens for illumination comprises: an incidence surface 510 which is formed concavely at a bottom top part of a lens body 51 and on which light from a light source 41 impinges; a reflection surface 520 which totally reflects light arriving from the incidence surface 510 on an outer circumferential inner side of the lens body 51; and an emission surface 530 which emits light arriving from the incidence surface 510 and reflection surface 520 outward at an upper end of the lens body 51, the incidence surface 510 distributing light made to travel toward the reflection surface 520 to a predetermined range 521, close to the bottom top part, of the reflection surface 520 excluding an upper end side connecting with the emission surface 530.SELECTED DRAWING: Figure 1

    【課題】不快な眩しさを抑えることができ、コンパクトに構成することができ、限られたスペースにおける取り付け性も良くなる照明用レンズを提供する。【解決手段】レンズ本体51の底頂部に凹設され、光源41からの光が入射する入射面510と、レンズ本体51の外周内側で入射面510から到達した光が全反射する反射面520と、レンズ本体51の上端で入射面510および反射面520から到達した光が外部に出射する出射面530とを備え、入射面510は、反射面520に向かわせる光を、該反射面520のうち出射面530に続く上端側を除いた底頂部寄りの所定範囲521に配光する。【選択図】図1


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    Title :

    LENS FOR ILLUMINATION


    Additional title:

    照明用レンズ


    Contributors:
    FUJII TADASHI (author) / ITO HAYATO (author) / KAMINAGA YOMEI (author) / KOJIMA YASUYO (author) / YAKUSHIJI KEI (author)

    Publication date :

    2019-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



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