Title:
LENS DRIVER AND IMAGING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2004/046782
Kind Code:
A1
Abstract:
A lens driver and an imaging apparatus in which shift of the focus from an object due to variation in the position of a quantity-of-light-adjusting filter can be avoided by controlling the position of a focus lens depending on the position of the quantity-of-light-adjusting filter. The imaging apparatus comprises a focus lens driving means for moving the position of the focus lens adjusting the focus for the object, a focus position detecting means for detecting the moving amount of the focus lens being moved by the focus lens driving means, a means for detecting the position of a filter adjusting the quantity of light from the object, and a focus correction amount calculating means performing correction control of the focus position from the focus position detecting means depending on the position of the quantity-of-light-adjusting filter detected by the means for detecting the quantity-of-light-adjusting filter.
Inventors:
OKAZAKI SAKAE (JP)
KUSHIDA HIDENORI (JP)
KUSHIDA HIDENORI (JP)
Application Number:
PCT/JP2003/013831
Publication Date:
June 03, 2004
Filing Date:
October 29, 2003
Export Citation:
Assignee:
SONY CORP (JP)
OKAZAKI SAKAE (JP)
KUSHIDA HIDENORI (JP)
OKAZAKI SAKAE (JP)
KUSHIDA HIDENORI (JP)
International Classes:
G02B7/08; G02B7/10; G02B7/28; G03B13/36; G03B9/02; G03B9/07; H04N5/232; (IPC1-7): G02B7/28; G03B3/00; H04N5/232
Foreign References:
| JP2003241078A | 2003-08-27 | |||
| US6046863A | 2000-04-04 | |||
| JPH11289487A | 1999-10-19 | |||
| JPH0961703A | 1997-03-07 | |||
| US4473287A | 1984-09-25 | |||
| JPS62165634A | 1987-07-22 | |||
| EP0687922A2 | 1995-12-20 | |||
| US5758206A | 1998-05-26 |
Attorney, Agent or Firm:
Nakamura, Tomoyuki c/o Miyoshi International Patent Office (Toranomon Kotohira Tower 2-8, Toranomon 1-chom, Minato-ku Tokyo, JP)
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