LIGHT SCANNING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME
卷宗概要
发明人
Ryota SATO; Hiroyuki FUKUHARA
IPC 分类
CPC 分类
A light scanning apparatus according to the present disclosure includes a deflecting unit deflecting a light flux from a light source to scan a surface in a main scanning direction, a first optical system guiding the light flux deflected by the deflecting unit to the surface to be scanned at a first timing, and a second optical system guiding the light flux deflected by the deflecting unit to a light receiving element at a second timing different from the first timing, in which the second optical system includes a first optical element which has a diffracting surface and condenses the light flux deflected by the deflecting unit at the second timing in a main scanning cross section, and a value of a diffractive power of the first optical element is equal to or larger than a value of a refractive power thereof in the main scanning cross section.
原文（中文）
A light scanning apparatus according to the present disclosure includes a deflecting unit deflecting a light flux from a light source to scan a surface in a main scanning direction, a first optical system guiding the light flux deflected by the deflecting unit to the surface to be scanned at a first timing, and a second optical system guiding the light flux deflected by the deflecting unit to a light receiving element at a second timing different from the first timing, in which the second optical system includes a first optical element which has a diffracting surface and condenses the light flux deflected by the deflecting unit at the second timing in a main scanning cross section, and a value of a diffractive power of the first optical element is equal to or larger than a value of a refractive power thereof in the main scanning cross section.