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. 19, 2022
Filed:
Dec. 10, 2020
Fujifilm Corporation, Tokyo, JP;
Shinji Otsuka, Saitama, JP;
Yukihiro Kaneko, Saitama, JP;
Masahiko Miyata, Saitama, JP;
Takeya Abe, Saitama, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A lens barrel including a first main shaft and a first sub-shaft that guide the movement of a third front lens group (G), a second main shaft and a second sub-shaft that guide the movement of a fourth lens group (G), a hall element that is used to detect the position of the third front lens group (G), and an MR sensor that is used to detect the position of the fourth lens group (G) are disposed on a straight line passing through an optical axis in a cross section orthogonal to the optical axis. The first main shaft and the second main shaft overlap each other in a direction of the optical axis. In a drive unit for each lens group, a plurality of drive magnets are arranged symmetrically with respect to the straight line.