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Patent Searching and Data


Title:
LENS BARREL, IMAGING DEVICE, LENS CONTROL METHOD, AND LENS CONTROL PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/022025
Kind Code:
A1
Abstract:
Provided are: a lens barrel that makes it possible to perform highly precise drive control even when magnetic force fluctuates when a lens is made to move in the direction of an optical axis using a moving magnet-type voice coil motor; an imaging device; a lens control method; and a lens control program. The lens barrel is provided with first and second movable units that cause first and second lenses constituting a zoom lens to move in the direction of the optical axis of the zoom lens. The first movable unit is a moving magnet-type voice coil motor in which a magnet arranged on a movable section receives magnetic force corresponding to a relative position with respect to another magnetic body. A control unit 100-1 uses information indicating the relative positions of a first magnet and a magnetic body as a basis to correct a first operation amount for position control of the first movable unit calculated on the basis of a position command value for the first lens and the current position of the first lens, then controls driving of the first movable unit.

Inventors:
FUJIKI, Shinichiro (1-324 Uetake-cho, Kita-ku, Saitama-sh, Saitama 24, 〒3319624, JP)
MIYATA, Masahiko (1-324 Uetake-cho, Kita-ku, Saitama-sh, Saitama 24, 〒3319624, JP)
Application Number:
JP2019/026686
Publication Date:
January 30, 2020
Filing Date:
July 04, 2019
Export Citation:
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Assignee:
FUJIFILM CORPORATION (26-30, Nishiazabu 2-chome Minato-k, Tokyo 20, 〒1068620, JP)
International Classes:
G02B7/04; G03B17/14; H04N5/225; G02B7/02
Foreign References:
JPH0815593A1996-01-19
Attorney, Agent or Firm:
MATSUURA, Kenzo (Matsuura & Associates, P.O. Box 176 Shinjuku Sumitomo Bldg. 23F, 6-1, Nishi-shinjuku 2-chome, Shinjuku-k, Tokyo 23, 〒1630223, JP)
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