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1. (WO2013114701) LENS DEVICE AND IMAGE PICK-UP DEVICE

Pub. No.:    WO/2013/114701    International Application No.:    PCT/JP2012/079403
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Wed Nov 14 00:59:59 CET 2012
IPC: G02B 7/10
G02B 7/08
Applicants: FUJIFILM CORPORATION
富士フイルム株式会社
Inventors: MITARAI Tsuyoshi
御手洗 毅
MISAWA Atsushi
三沢 充史
Title: LENS DEVICE AND IMAGE PICK-UP DEVICE
Abstract:
A lens device (3A) has a lens mirror barrel (10) and a drive unit (11). The drive unit is provided with a first magnet (40). The lens mirror barrel is provided with a magnetic body (42). The drive unit is detachably fixed to the lens mirror barrel by using the magnetic force effect between the first magnet and the magnetic body. The drive unit has a movement mechanism for causing the first magnet to move away from the magnetic force of the magnetic body by displacing a magnetic force surface in a direction that intersects with the magnetic flux Φ of the magnetic force surface (40a) of the first magnet.