公开(公告)号：US20210373312A1

公开(公告)日：2021-12-02

申请号：US17327891

申请日：2021-05-24

Applicant: OLYMPUS CORPORATION

Inventor： Yoshihiro SHIMADA ,  Chihiro HIRAGA ,  Katsunori OGO ,  Daisuke NISHIWAKI ,  Takashi SUGIYAMA

IPC: G02B21/06 ,  G02B21/00 ,  G02B21/34

Abstract: An observation vessel includes a holding portion configured to hold an observation object and an accommodation portion at least partially formed of a transparent curved surface and configured to position the holding portion. The holding portion is configured to hold the observation object at a set position separated from the curved surface toward a center of curvature of the curved surface in a first state of being positioned at a first position by the accommodation portion.