公开(公告)号：US20190113765A1

公开(公告)日：2019-04-18

申请号：US16209631

申请日：2018-12-04

Applicant: GIGAPHOTON INC.

Inventor： Kenshiro NAGAHAMA ,  Yukio WATANABE

IPC: G02B27/14 ,  H05G2/00 ,  G02B7/182 ,  G03F7/20

Abstract: An optical element angle adjustment device includes a first hinge that is an elastic hinge configured to connect a first plate and a second plate with each other, an optical element holding part attached to at least one of the first plate and the second plate, and a first adjusting screw configured to apply force in a direction of closing the first hinge to adjust a tilt angle of at least one of the first plate and the second plate. An end in an axis direction of the first adjusting screw is provided with a first press member configured to slidably abut on one of the first plate and the second plate. At least one of a first press member side abutting portion and a first hinge side abutting portion on which the first press member abuts has a curved surface in a curved surface shape.