公开(公告)号：US20180217001A1

公开(公告)日：2018-08-02

申请号：US15748286

申请日：2015-09-03

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yoshihisa WARASHINA ,  Tomofumi SUZUKI ,  Kohei KASAMORI ,  Ryosuke OKUMURA ,  Kyosuke KOTANI

IPC: G01J3/45 ,  G01B9/02

Abstract: An optical interferometer includes a branching-combining unit, a first optical system, a second optical system, and a drive unit. The branching-combining unit includes a branching surface, an incident surface, a first output surface, a combining surface, and a second output surface on an interface of a transparent member, the branching surface partially reflects incident light and outputs as first branched light, and transmits the rest of the incident light into the interior as second branched light, the combining surface partially combines the first branched light and the second branched light to be output to the outside as first combined light, and combines the rest of the first branched light and the second branched light to be propagated into the interior as second combined light, and the second output surface partially outputs the second combined light to the outside.