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1. (WO2018047583) OBSERVATION DEVICE

Pub. No.:    WO/2018/047583    International Application No.:    PCT/JP2017/029336
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Wed Aug 16 01:59:59 CEST 2017
IPC: G02B 21/00
G02B 21/02
Applicants: OLYMPUS CORPORATION
オリンパス株式会社
Inventors: HIRATA, Tadashi
平田 唯史
Title: OBSERVATION DEVICE
Abstract:
This observation device (1) is provided with an illumination optic system (5) which emits illumination light upward from below the sample (X), and an imaging optic system (6) which, below the sample (X), captures transmitted light, which is the illumination light reflected above the sample (X) and transmitted through the sample (X). The illumination optic system (5) is provided with a diffuser plate (8), the imaging optic system (6) is provided with an objective optic system (4), and the following conditions are satisfied in order that part of the illumination light is blocked by the edges of the pupil of the objective optic system (4) when the emission region of the illumination optic system (5) is projected into the pupil of the imaging optic system (6). NAmin > (D+FOVy) / (4Htmin-4Hbmin+2WD) NAmin > (FOVy+T/2) / (2Htmin-2Hbmin) Y2 > NA(2Htmax+H''-Hbmax) + (FOVy/2) Y1 > NA(2Htmin+H''-Hbmin) + (FOVy/2)