Shutter device, and apparatus having the same
AssigneeCanon Kabushiki Kaisha
InventorShuichi Terada
Life of this patent
Estimating the term…
Abstract
A shutter device includes shutter blades, a motor which drives the shutter blades, diaphragm blades which are driven by the motor to perform opening and closing operations, and a transmission mechanism which transmits a driving force of the motor to the shutter blades and the diaphragm blades. In the shutter device, the transmission mechanism transmits the driving force of the motor to the shutter blades and the diaphragm blades in such a manner that driving of the shutter blades by the motor and driving of the diaphragm blades by the motor are made sequential.
Claims28
A shutter device comprising:
- a) shutter blades;
- b) a motor which drives said shutter blades;
- c) an aperture blade which moves from a position corresponding to a desired aperture value by being driven by said motor;
- and
- d) a transmission mechanism which transmits a driving force of said motor to said shutter blades and said aperture blade,
- wherein said transmission mechanism transmits the driving force of said motor to said shutter blades and said aperture blade in such a manner that driving of said shutter blades by said motor and driving of said aperture blade by said motor are made sequential.
A shutter device comprising:
- a) shutter blades;
- b) a motor which drives said shutter blades;
- c) an aperture blade which moves from a position corresponding to a desired aperture value by being driven by said motor;
- and
- d) a transmission mechanism which transmits a driving force of said motor to said shutter blades and said aperture blade,
- wherein said transmission mechanism transmits the driving force of said motor only to said shutter blades and does not transmit the driving force of said motor to said aperture blade while said shutter blades are being driven to perform an exposure operation.
A shutter device comprising:
- a) first shutter blades which move in an opening direction during an exposure operation;
- b) a first motor which drives said first shutter blades;
- c) second shutter blades which move in a closing direction during the exposure operation;
- d) a second motor which drives said second shutter blades;
- and
- e) diaphragm blades which are driven by said second motor to perform opening and closing operations.
An apparatus having a shutter device comprising:
- a) shutter blades;
- b) a motor which drives said shutter blades;
- c) an aperture blade which moves from a position corresponding to a desired aperture value by being driven by said motor;
- and
- d) a transmission mechanism which transmits a driving force of said motor to said shutter blades and said aperture blade,
- wherein said transmission mechanism transmits the driving force of said motor to said shutter blades and said aperture blade in such a manner that driving of said shutter blades by said motor and driving of said aperture blade by said motor are made sequential.
An apparatus having a shutter device, comprising:
- a) shutter blades;
- b) a motor which drives said shutter blades;
- c) an aperture blade which moves from a position corresponding to a desired aperture value by being driven by said motor;
- and
- d) a transmission mechanism which transmits a driving force of said motor to said shutter blades and said aperture blade,
- wherein said transmission mechanism transmits the driving force of said motor only to said shutter blades and does not transmit the driving force of said motor to said aperture blade while said shutter blades are being driven to perform an exposure operation.
An apparatus having a shutter device, comprising:
- a) first shutter blades which move in an opening direction during an exposure operation;
- b) a first motor which drives said first shutter blades;
- c) second shutter blades which move in a closing direction during the exposure operation;
- d) a second motor which drives said second shutter blades;
- and
- e) diaphragm blades which are driven by said second motor to perform opening and closing operations.
Dependencies are inferred from the claim text.