公开(公告)号：US20210033787A1

公开(公告)日：2021-02-04

申请号：US17074874

申请日：2020-10-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira HASHIYA ,  Yasuhisa INADA ,  Taku HIRASAWA ,  Yoshikazu YAMAOKA ,  Nobuaki NAGAO

IPC: G02B6/122 ,  G02B26/12 ,  G01S7/481 ,  G02B26/08 ,  G01S17/42 ,  G01S17/89 ,  G02B26/10 ,  G02B26/06 ,  G02F1/295

Abstract: An optical scanning device includes a waveguide array including a plurality of waveguides arranged in a first direction. Each waveguide includes: an optical waveguide layer that propagates light supplied to the waveguide in a second direction intersecting the first direction; a first mirror having a first reflecting surface intersecting a third direction; and a second mirror having a second reflecting surface that faces the first reflecting surface. The optical waveguide layer is located between the first and second mirrors and has a variable thickness and/or a variable refractive index for the light. The width of the first mirror and the width of the second mirror are each larger than the width of the optical waveguide layer. The first mirror has a higher light transmittance than the second mirror and allows part of the light propagating through the optical waveguide layer to be emitted in the third direction.