Title:
FOCAL PLANE SHUTTER AND OPTICAL APPARATUS
Document Type and Number:
Japanese Patent JP2017037168
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a focal plane shutter capable of preventing degradation in picture quality of a photographic image.SOLUTION: A focal plane shutter 10 includes a base plate 11 having an aperture 12, a rear curtain 30B capable of moving between an open position where the aperture 12 is opened and a closed position where the aperture 12 is closed so as to open and close the aperture 12, and a first buffer member 51 in contact with the rear curtain 30B. The rear curtain 30B has a first protrusion 61 protruding in a first direction L1 from the open position to the close position, outside the aperture 12, and coming into contact with the first buffer member 51 while the rear curtain 30B moves from the open position to the closed position.SELECTED DRAWING: Figure 4
Inventors:
OISHI SEIICHI
TOKURA SHOICHI
TOKURA SHOICHI
Application Number:
JP2015158020A
Publication Date:
February 16, 2017
Filing Date:
August 10, 2015
Export Citation:
Assignee:
SEIKO PRECISION KK
International Classes:
G03B9/36
Attorney, Agent or Firm:
Masatake Shiga
Shingo Suzuki
Nishizawa Kazumi
Field Saki Satoshi
Shingo Suzuki
Nishizawa Kazumi
Field Saki Satoshi