公开(公告)号：US20230082895A1

公开(公告)日：2023-03-16

申请号：US17882992

申请日：2022-08-08

Applicant: Fujitsu Optical Components Limited

Inventor： Takeshi Matsumoto

IPC: G02B6/42

Abstract: Optical device, that is provided between optical output element and optical propagation element, includes: first lens circuit configured to include one or more lenses through which output light of the optical output element passes; and second lens circuit configured to include one or more lenses and guide output light of the first lens circuit to the optical propagation element. When F11 represents distance between the optical output element and the first lens circuit, F12 represents distance between the first lens circuit and first beam waist position of the first lens circuit, F21 represents distance between the first beam waist position and the second lens circuit, and F22 represents distance between the second lens circuit and second beam waist position of the second lens circuit, F11 and F22 are equal to each other and F12 and F21 are equal to each other.