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:
Jul. 25, 2017
Filed:
Feb. 13, 2017
Fujifilm Corporation, Tokyo, JP;
Tsuyoshi Mitarai, Saitama, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A lens device includes a Hall IC detecting whether extender lenses are positioned on an optical axis or are retreated from the optical axis by rotating the extender lenses about a rotating shaft by a predetermined angle. An inner space of a lens barrel is divided into first to fourth spaces by a first plane passing through the rotating shaft and the optical axis and a second plane passing through the optical axis and perpendicular to the first plane. When the extender lenses are positioned on the optical axis, a magnet is fixed to a portion in the first space of an extender lens frame and the Hall IC is disposed in the first space on a side substantially opposite to a portion in which the rotating shaft is present, so that the Hall IC is not an obstacle even while the extender lenses rotate.