Title:
カメラ用シャッタ
Document Type and Number:
Japanese Patent JP5366983
Kind Code:
B2
Abstract:
A camera shutter operates to set iris closing blades (5) each to a preset position, start an exposure by moving opening shutter blades (4) to open a shutter opening (6), and terminate the exposure by moving the closing iris blades (5) to closing positions to close the shutter opening. A shutter drive (7,8b,8c,11) moves the opening shutter blades (4) to their open positions, a first hook (13) holds the shutter drive in a charged position prior to shutter opening, an iris drive (8,9,12) moves the closing iris blades (5) to closing positions, a second hook (14) holds the iris drive (8,9,12) in a charged position prior to iris closing; and a magnet (M) moves the first and second hooks between their rest positions and their charged positions according to controlled timings. The magnet (M) acts to start the exposure by opening the opening shutter blades, and after a period of time, closes the closing iris blades, thereby terminating the exposure. The shutter drive (7,8b,8c,11) and the iris drive (8,9,12) are each operated from their charged positions by a spring when they are released by their respective hooks.
Inventors:
Shogo Kato
Application Number:
JP2011010915A
Publication Date:
December 11, 2013
Filing Date:
January 21, 2011
Export Citation:
Assignee:
Mamiya Digital Imaging Co., Ltd.
International Classes:
G03B9/24; G03B9/02; G03B9/10
Domestic Patent References:
| JP11288019A | ||||
| JP7261239A |
Attorney, Agent or Firm:
Tadao Hirata