公开(公告)号：US12013491B2

公开(公告)日：2024-06-18

申请号：US17020132

申请日：2020-09-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuki Nakamura ,  Yasuhisa Inada ,  Taku Hirasawa

IPC: G01C3/08 ,  G01S7/481 ,  G02B5/04 ,  G02B5/18 ,  G02F1/295

CPC classification number: G01S7/4817 ,  G02B5/04 ,  G02B5/1861 ,  G02F1/2955

Abstract: An optical device includes: a first mirror having a first reflecting surface extending in a first direction and a second direction perpendicular to the first direction; a second mirror having a second reflecting surface; an optical waveguide layer that is located between the first and second mirrors and propagates light in the first direction; and an optical element that is disposed on the first mirror and emits incident light in a direction different from an incident direction. The optical element emits (1) incident light entering from the optical waveguide layer through the first mirror in a direction whose first direction component is smaller than that of an incident direction of the incident light by refraction and/or diffraction or (2) incident light entering from the outside in a direction whose first direction component is larger than that of an incident direction by refraction and/or diffraction.

公开(公告)号：US11953726B2

公开(公告)日：2024-04-09

申请号：US17471687

申请日：2021-09-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuki Nakamura ,  Yasuhisa Inada

IPC: G02B6/124 ,  G01S7/481 ,  G01S17/89 ,  G02B6/12 ,  G02F1/295

CPC classification number: G02B6/124 ,  G01S7/4817 ,  G01S17/89 ,  G02B6/12033 ,  G02F1/295 ,  G02B2006/12104 ,  G02F2201/302

Abstract: An optical device includes a first waveguide extending in a first direction and a second waveguide connected to the first waveguide. The second waveguide includes a first mirror, a second mirror, and an optical waveguide layer. At least either the first waveguide or the second waveguide has one or more gratings in a part of a connection region in which the first mirror, the second mirror, and the first waveguide overlap one another when seen from an angle parallel with a direction perpendicular to a first reflecting surface of the first mirror. The one or more gratings is at a distance that is longer than at least either a thickness of the first mirror or a thickness of the second mirror in the first direction from an end of the first mirror or the second mirror that is in the connection region.

公开(公告)号：US12147094B2

公开(公告)日：2024-11-19

申请号：US17807741

申请日：2022-06-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira Hashiya ,  Yasuhisa Inada ,  Kazuki Nakamura

IPC: G02F1/01 ,  F21V8/00 ,  G01S7/481

Abstract: An optical device includes a plurality of optical waveguides, and a planar optical waveguide. The plurality of optical waveguides each extend in a first direction, and are arranged in a second direction intersecting the first direction. The planar optical waveguide is connected directly or indirectly with the plurality of optical waveguides. The plurality of optical waveguides each allow light to propagate in the first direction. The planar optical waveguide includes a first mirror and a second mirror, and an optical waveguide layer. The first mirror and the second mirror face each other, and extend in the first direction and the second direction. The optical waveguide layer is located between the first mirror and the second mirror.

公开(公告)号：US12130481B2

公开(公告)日：2024-10-29

申请号：US17556715

申请日：2021-12-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuki Nakamura ,  Yasuhisa Inada

IPC: G01S7/481 ,  G01S17/42 ,  G02B6/12 ,  G02B6/122 ,  G02B6/125 ,  G02B6/34 ,  G02B6/42 ,  G02F1/295

CPC classification number: G02B6/4214 ,  G01S7/4817 ,  G01S17/42 ,  G02B6/12 ,  G02B6/12004 ,  G02B6/122 ,  G02B6/125 ,  G02B6/34 ,  G02B2006/12104

Abstract: A light emitting device includes a waveguide element including a first mirror that is light transmissive, a second mirror that faces the first mirror, and an optical waveguide layer located between the first mirror and the second mirror, the waveguide element allowing light input to the optical waveguide layer to propagate along a first direction and to be emitted through the first mirror; a first photodetector that is located on a path of light to be input to the optical waveguide layer or on another path branching off from the path and outputs a first signal according to an amount of received light; and a second photodetector that is located on a path of light that has propagated through the optical waveguide layer along the first direction and passed the optical waveguide layer and outputs a second signal according to an amount of received light.