The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2014
Filed:
Jan. 02, 2014
Fujifilm Corporation, Tokyo, JP;
Kenichi Sato, Saitama-ken, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
A zoom viewfinder substantially consists of, in order from the object side: a variable-magnification objective lens system substantially consisting of a first lens group that includes a negative first-group first lens and a reflective member arranged in this order from the object side, a positive second lens group that is moved during magnification change, and a positive third lens group that is moved during magnification change; an erect optical system having a reflective surface for converting an inverted image into an erect image; and a positive eyepiece lens system, wherein conditional expressions (1), (2A) and (3) below are satisfied:1.5<2/1<3.0  (1),1.76≦|2/|<2.0  (2A) and1.0<3/2<5.0  (3).