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1. (WO2018105710) OBSERVATION OPTICAL SYSTEM

Pub. No.:    WO/2018/105710    International Application No.:    PCT/JP2017/044099
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Fri Dec 08 00:59:59 CET 2017
IPC: G02B 25/00
Applicants: KONICA MINOLTA, INC.
コニカミノルタ株式会社
Inventors: HIROSE, Naoki
広瀬 直樹
Title: OBSERVATION OPTICAL SYSTEM
Abstract:
An observation optical system 10 is provided with: an objective optical system LO; a reverse optical system PR which is provided either inside the objective optical system LO or just behind the objective optical system LO in order to reverse an inverted image to an erected image; and an eyepiece optical system LE which is provided disposed closest to an eye pupil EP in order to observe the erected image, and satisfies the following conditional expressions: 1.6