Title:
SHUTTER DEVICE AND IMAGING DEVICE
Document Type and Number:
Japanese Patent JP2021043366
Kind Code:
A
Abstract:
To accurately control exposure time regardless of set shuttering seconds.SOLUTION: A shutter device has: a front blade unit 4 that is locked to a close position with respect to an opening 1a of a shutter ground plate 1, and travels to an open position upon releasing of the locking; a rear blade unit 5 that is locked to the open position and travels to the close position upon releasing of the locking; front releasing units 31, 36, and 37 that release the locking of the front blade unit by using driving force generated on a front magnet 32 by energization to a front coil 37b; and rear releasing units 41, 46, and 47 that release the locking of the rear blade unit by using driving force generated on a rear magnet by energization to a rear coil 47b. Control means performs first energization to the front coil, and then performs second energization to the front coil before performing energization to the rear coil.SELECTED DRAWING: Figure 9
Inventors:
KOIZUMI TORU
Application Number:
JP2019166089A
Publication Date:
March 18, 2021
Filing Date:
September 12, 2019
Export Citation:
Assignee:
CANON KK
International Classes:
G03B9/36; H04N5/225
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya