Title:
LENS DEVICE AND IMAGING SYSTEM USING THE SAME
Document Type and Number:
Japanese Patent JP2017032750
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lens device that automatically sets a correction point different from a synchronous correction point without complexing an adjustment work, and improves diaphragm synchronous accuracy between lens devices for use in stereo photographing.SOLUTION: A lens device to be applied to an imaging system in which communication is implemented between lens devices and images are synchronously taken comprises: a movable diaphragm that is displaceable to a closing position; a drive unit that drives the movable diaphragm; a detection unit that detects a position of the movable diaphragm; communication means that transmits/receives a command value corresponding to a F-value for implementing a synchronous control of the movable diaphragm between the lens devices to/and from other lens device; and control means that derives the position of the movable diaphragm from the received command value on the basis of a corrected relation between the position of the movable diaphragm and the command value corresponding to the F-value on the basis of a position of the movable diaphragm having the movable diaphragm closed, and a position of the movable diaphragm detected by the detection unit at the F-value equal to or more than one, and the command value corresponding to the F-value to control the movable diaphragm by the drive unit, or derives a command value from the detected position of the movable diaphragm to output the command value.SELECTED DRAWING: Figure 1
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Inventors:
SUZUKI JUNICHI
Application Number:
JP2015151985A
Publication Date:
February 09, 2017
Filing Date:
July 31, 2015
Export Citation:
Assignee:
CANON KK
International Classes:
G03B35/08; G02B7/08; G03B7/00; H04N5/238; H04N13/02
Attorney, Agent or Firm:
Okabe
Shinichi Usui
Takao Ochi
Seiichiro Takahashi
Koji Yoshizawa
Masami Saito
Katsuhiko Kimura
Naofumi Tanaka
Shinichi Usui
Takao Ochi
Seiichiro Takahashi
Koji Yoshizawa
Masami Saito
Katsuhiko Kimura
Naofumi Tanaka