Title:
FINDER AND IMAGE PICKUP DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/196187
Kind Code:
A1
Abstract:
This finder comprises an objective optical system that forms an intermediate image and an eyepiece optical system for observing the intermediate image in the order from the object side to the eye point side. The intermediate image is located in an optical path between the objective optical system and the eyepiece optical system. The finder includes a plurality of reflecting surfaces for forming an erect image, and the objective optical system and the eyepiece optical system each have at least one of the plurality of reflecting surfaces. The finder satisfies the conditional expression: 2 < fo/fe < 8 relating to the focal length fo of the objective optical system and the focal length of the eyepiece optical system fe.
Inventors:
SAITO HIROKI (JP)
MIYAGISHIMA SHUNSUKE (JP)
TAKAHASHI KOSUKE (JP)
OTSUKI TOMOKI (JP)
MIYAGISHIMA SHUNSUKE (JP)
TAKAHASHI KOSUKE (JP)
OTSUKI TOMOKI (JP)
Application Number:
PCT/JP2022/004895
Publication Date:
September 22, 2022
Filing Date:
February 08, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B25/00; G02B5/04; G02B13/18; G02B15/16; G02B15/167; G02B15/20; G03B13/08; G03B17/20
Foreign References:
| JP2018010215A | 2018-01-18 | |||
| JPH11133298A | 1999-05-21 | |||
| JP2006259476A | 2006-09-28 | |||
| JP2007256644A | 2007-10-04 | |||
| JP2005352240A | 2005-12-22 | |||
| JP2009186675A | 2009-08-20 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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