Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Taisei Funaki0
Masayuki Hino0
Date of Patent
January 4, 2011
Patent Application Number
12675228
Date Filed
August 7, 2008
Patent Primary Examiner
Patent abstract
A lens barrel includes a barrel main body, a first lens movement frame, a magnetic scale, and a magnetic sensor. The first lens movement frame is arranged movably in the optical axis direction of the optical system with respect to the barrel main body. The magnetic scale is provided to the first lens movement frame. The magnetic sensor is arranged on the outside of the barrel main body, and detects the position of the first lens movement frame with respect to the barrel main body by detecting the position of the magnetic scale with respect to the barrel main body.
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