To provide a light irradiation device capable of generating scanning light, which can vary irradiation distribution and is parallel light.SOLUTION: A light irradiation device 1 comprises a light source module 2, a light deflector 3, a parallel light generation unit 4 and a projection light generation unit 5 in this order along an optical path. A light condensing point on an emission side of the light source module 2, a mirror center Or of the light deflector 3 and a focal point of an incident side of the parallel light generation unit 4 are set at the same position P1. A mirror part 31 of the light deflector 3 normally or reversely rotates around an axial line passing through the mirror center Or, to emit to the parallel light generation unit 4 scanning light Ls, which is reflection light and deflection light. The parallel light generation unit 4 makes the scanning light Ls parallel light parallel with an optical axis, and then emits it.SELECTED DRAWING: Figure 1
【課題】照度分布を可変にした平行光の走査光を生成可能にした光照射装置を提供する。【解決手段】光照射装置1は、光路に沿って順番に光源モジュール2、光偏向器3、平行光生成部4及び投影光生成部5を備える。光源モジュール2の出射側の集光点と光偏向器3のミラー中心Orと平行光生成部4の入射側の焦点とは共に同一の位置P1に設定される。光偏向器3のミラー部31は、ミラー中心Orを通る軸線の回りに正逆転して、反射光でかつ偏向光の走査光Lsを平行光生成部4に出射する。平行光生成部4は、走査光Lsを光軸に平行な平行光にして出射する。【選択図】図1
LIGHT IRRADIATION DEVICE AND VEHICULAR LAMP
光照射装置及び車両用灯具
13.06.2019
Patent
Elektronische Ressource
Japanisch
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 |
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