To provide a lamp unit capable of obtaining a projection image with high contrast upon selectively radiating light toward the front of a vehicle, and a vehicular lamp system.SOLUTION: A lamp unit 4 used in a vehicular lamp system that selectively radiates light around a vehicle, comprises a light source 11, an optical shutter unit that modulates light emitted from the light source 11, and a projection lens 17. The optical shutter unit is arranged between a pair of polarizing plates 13a, 13b, and has: a liquid crystal element 14, a positive A plate, in which the initial orientation of liquid crystal molecules is horizontal and the change in orientation is generated in an in-plane direction by applying an electric field; a first optical plate 15, a positive C plate, arranged between the liquid crystal element 14 and the polarizing plate 13a on the side closer to the light source 11 of the pair of polarizing plates; and a second optical plate 16 arranged between the first optical plate 15 and the liquid crystal element 14.SELECTED DRAWING: Figure 1

    【課題】車両前方へ選択的な光照射を行う際にコントラストの高い投射像が得られるランプユニット、車両灯具システムを提供する。【解決手段】車両の周囲に対して選択的な光照射を行う車両用灯具システムに用いられるランプユニット4であって、光源11と、光源11から出射される光を変調する光シャッター部、と投影レンズ17とを備える。光シャッター部は、一対の偏光板13a、13b、の相互間に配置されており、液晶分子の初期配向が水平配向であって電界印加によって面内方向で配向変化を生じる液晶素子14、正のAプレートであり、一対の偏光板のうち光源11に近い側の偏光板13aと液晶素子14の間に配置された第1光学板15、正のCプレートであり、第1光学板15と液晶素子14の間に配置された第2光学板16を有する。【選択図】図1


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    Title :

    LAMP UNIT AND VEHICULAR LAMP SYSTEM


    Additional title:

    ランプユニット、車両用灯具システム


    Contributors:

    Publication date :

    2020-01-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / 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 / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von...



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