公开(公告)号：US4717254A

公开(公告)日：1988-01-05

申请号：US894610

申请日：1986-08-07

Applicant: Toshizo Masuda

Inventor： Toshizo Masuda

IPC: G01J3/02 ,  G01J3/18 ,  G01J3/22

CPC classification number: G01J3/18 ,  G01J3/02 ,  G01J3/0262 ,  G01J3/22 ,  G01N2201/064

Abstract: In a Littrow spectroscope including a concave mirror for reflecting light from a source, a diffraction grating for further reflecting the light reflected by the mirror, the grating being made rotatable to allow the mirror to re-reflect the light therefrom, and an exit on which the light re-reflected by the mirror is focused; a stray-light suppressor in the form of a strip is disposed in front of, and horizontally in parallel with the longitudinal central axis of, the mirror. The suppressor is held in front of the mirror at a distance of (L1-L2), where L1 is the distance between the mirror and the grating and L2 is the distance between the grating and the exit. The suppressor portion upon which the stray light from the diffraction grating impinges is tapered.

Abstract translation: 在包括用于反射来自光源的光的凹面镜的Littrow分光镜中，用于进一步反射由反射镜反射的光的衍射光栅，光栅被制成可旋转以允许反射镜从其反射光，以及出射口 镜子反射的光线集中在一起; 带状形式的杂散光抑制器设置在反射镜的纵向中心轴的前面并且与之平行。 抑制器被保持在反射镜前面（L1-L2）的距离处，其中L1是反射镜和光栅之间的距离，L2是光栅与出口之间的距离。 来自衍射光栅的杂散光撞击的抑制部分是锥形的。