Title:
LENS BARREL, CAMERA BODY AND PROGRAM
Document Type and Number:
Japanese Patent JP2017078734
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lens barrel, camera body and program that can shorten a diaphragm drive time.SOLUTION: A lens barrel 200 of the present invention comprises: a diaphragm value information acquisition unit 204 that acquires information on a diaphragm value from a mounted camera body 300; a full-aperture diameter formation unit 122 that defines a diaphragm full-aperture; a first diaphragm member 112 that is driven to a diaphragm position achieving the diaphragm value acquired by the diaphragm value information acquisition unit 204 on an inner diameter side of the diaphragm full-aperture diameter from a diaphragm drive start position on an outer diameter side than the diaphragm full-aperture diameter; and a diaphragm drive unit 130 that drives the first diaphragm member 112 from the diaphragm drive start position to the diaphragm position. The diaphragm start position is configured to be changed so as to shorten a drive time from the diaphragm drive start position to the diaphragm position in a range on the outer diameter side than the diaphragm full-aperture diameter in accordance with a change in diaphragm full-aperture diameter.SELECTED DRAWING: Figure 4
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Inventors:
INOHARA YUJI
Application Number:
JP2015205322A
Publication Date:
April 27, 2017
Filing Date:
October 19, 2015
Export Citation:
Assignee:
NIKON CORP
International Classes:
G03B9/02
Domestic Patent References:
| JPH06242489A | 1994-09-02 | |||
| JP2001083565A | 2001-03-30 | |||
| JP2015052737A | 2015-03-19 | |||
| JPH0553170A | 1993-03-05 | |||
| JP2001290190A | 2001-10-19 | |||
| JP2000162494A | 2000-06-16 | |||
| JP2006215399A | 2006-08-17 | |||
| JPH06169428A | 1994-06-14 | |||
| JP2009175596A | 2009-08-06 |
Foreign References:
| US5278605A | 1994-01-11 |
Attorney, Agent or Firm:
Masao Sekiguchi
Takamasa Nakano
Takamasa Nakano
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