Title:
IMAGING DEVICE, IMAGING DEVICE BODY, AND LENS BARREL
Document Type and Number:
WIPO Patent Application WO/2016/035642
Kind Code:
A1
Abstract:
Provided are: an imaging device provided with an APD filter, wherein setting of imaging exposure and detection of focusing position can both be performed with good precision; an imaging device body; and a lens barrel. When the APD filter (17) is arranged on the optical path of incident light, the imaging exposure is determined using a corrected aperture value (T value) obtained by correcting an aperture value on the basis of an optical characteristic of the APD filter (17), and the imaging aperture determined in the imaging exposure determination is set. Then, rather than using the aperture value (T value) after correction, a search interval SD for moving a focus lens (15) during autofocusing is determined using a pre-correction aperture value (F value). The search interval SD is determined by a value calculated by multiplying the depth of focus D by a certain value C and dividing by an image surface movement coefficient k.
Inventors:
UCHIDA AKIHIRO (JP)
Application Number:
PCT/JP2015/074044
Publication Date:
March 10, 2016
Filing Date:
August 26, 2015
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B7/36; G02B7/28; G03B11/00; G03B13/36; G03B17/14; H04N5/225; H04N5/232; H04N5/238
Foreign References:
| JP2005062732A | 2005-03-10 | |||
| JPH10268382A | 1998-10-09 | |||
| JP2005208526A | 2005-08-04 | |||
| JP2011248161A | 2011-12-08 | |||
| JP2000338387A | 2000-12-08 |
Attorney, Agent or Firm:
KYORITSU INSTITUTE (JP)
Patent business corporation Kobayashi international patent firm (JP)
Patent business corporation Kobayashi international patent firm (JP)
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