OPTICAL UNIT

PROBLEM TO BE SOLVED: To provide a technique that can form an irradiated region and an unirradiated region separated in a direction intersecting with a scanning direction in a light distribution pattern formed by an optical unit.SOLUTION: An optical unit 40 comprises a rotating reflector 42 that rot...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: SONE HIDEMICHI
Format: Patent
Sprache:eng ; jpn
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a technique that can form an irradiated region and an unirradiated region separated in a direction intersecting with a scanning direction in a light distribution pattern formed by an optical unit.SOLUTION: An optical unit 40 comprises a rotating reflector 42 that rotates about a rotating axis R in one direction while reflecting light emitted from a light source. The rotating reflector 42 is provided with a plurality of reflecting surfaces 42a and 42b so that the light from the light source reflected during rotation forms a desired light distribution pattern. The reflecting surfaces comprise the first reflecting surface 42a that forms a first partial region R1 of the light distribution pattern, and the second reflecting surface 42b that forms a second partial region R2 of the light distribution pattern different from the first partial region R1.SELECTED DRAWING: Figure 7 【課題】光学ユニットが形成する配光パターンにおいて、走査方向と交差する方向に分割された照射領域と非照射領域とを形成可能な技術を提供する。【解決手段】光学ユニット40は、光源から出射した光を反射しながら回転軸Rを中心に一方向に回転する回転リフレクタ42を備える。回転リフレクタ42は、回転しながら反射した光源の光が所望の配光パターンを形成するように複数の反射面42a,42bが設けられており、反射面は、配光パターンの第1の部分領域R1を形成する第1の反射面42aと、第1の部分領域R1と異なる、配光パターンの第2の部分領域R2を形成する第2の反射面42bと、有する。【選択図】図7