Title:
IMAGING DEVICE
Document Type and Number:
Japanese Patent JP2017156374
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To supply an imaging device capable of reducing a light quantity change within an optical finder during the operation of a mirror in a mirror drive mechanism for controlling the movement of a sub-mirror holder.SOLUTION: A light quantity within an optical finder at a second mirror unit position which guides a subject light flux having transmitted a main mirror to focus detecting means is calculated from a measurement result of the light quantity within an optical finder at a first mirror unit position, and control means for controlling the light quantity within the optical finder at the second mirror unit position by determining whether or not the calculated light quantity exceeds a fixed threshold value.SELECTED DRAWING: Figure 7
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Inventors:
TSURUTA MASAYA
Application Number:
JP2016036657A
Publication Date:
September 07, 2017
Filing Date:
February 29, 2016
Export Citation:
Assignee:
CANON KK
International Classes:
G03B19/12; G03B7/091; G03B13/06; H04N5/225; H04N5/238
Attorney, Agent or Firm:
Yukio Takanashi