摘要:
The invention relates to an optical apparatus having a vibration detector that detects vibration, a holding member that holds an image stabilizing optical system, an elastic member that elastically supports the holding member so that the holding member can shift within a plane perpendicular to an optical axis, a drive unit that generates a drive force resisting against an elastic force of the elastic member, a drive circuit that drives the drive unit, a control circuit that controls the position of the holding member, a temperature sensor that measures temperature, and a viscous damper that damps movement of the holding member in the drive direction. The control circuit changes the image stabilizing drive control characteristic of the drive circuit to compensate for changes in viscosity of the viscous damper with temperature.
摘要:
An optical apparatus includes a photographic optical system including an image stabilizing unit supported by a support member via a plurality of elastic members, an actuator configured to drive the image stabilizing unit in a direction perpendicular to an optical axis thereof, a position detection unit configured to detect a position in the direction perpendicular to the optical axis of the image stabilizing unit, a gravitational direction determination unit configured to determine a gravitational direction based on an output from the position detection unit, a setting unit configured to set a holding position at which the image stabilizing unit is held based on information concerning the gravitational direction output from the gravitational direction determination unit, and a control unit configured to control the actuator based on information concerning the holding position to move the image stabilizing unit to the holding position.
摘要:
The image-pickup apparatus includes a controller that controls the energization of the actuator for driving the aperture stop. The controller receives from a lens apparatus information on a time period for controlling the energization of the actuator, the information being set corresponding to the type of the actuator. During an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing the energization amount thereof in response to the elapse of the time period. This can reduce power consumption.
摘要:
An optical apparatus is disclosed which can prevent displacement of subject images due to an initializing operation of the image stabilizing unit from being seen by a photographer through a finder. The apparatus comprises an image-stabilizing unit which includes a movable unit movable for image stabilization and balls movable in conjunction with the movement of the movable unit, and a controller which controls operations of the movable unit. The controller causes the movable unit to perform a specific operation for moving the balls to a specific position in response to mounting of the optical apparatus on another optical apparatus, the specific operation being a different operation from an image stabilization operation of the image-stabilizing unit.
摘要:
An optical apparatus includes a photographic optical system including an image stabilizing unit supported by a support member via a plurality of elastic members, an actuator configured to drive the image stabilizing unit in a direction perpendicular to an optical axis thereof, a position detection unit configured to detect a position in the direction perpendicular to the optical axis of the image stabilizing unit, a gravitational direction determination unit configured to determine a gravitational direction based on an output from the position detection unit, a setting unit configured to set a holding position at which the image stabilizing unit is held based on information concerning the gravitational direction output from the gravitational direction determination unit, and a control unit configured to control the actuator based on information concerning the holding position to move the image stabilizing unit to the holding position.
摘要:
An optical apparatus is disclosed which is capable of acquiring images with a good quality and saving power. The optical apparatus comprises a movable unit which is supported by an elastic member and movable for image stabilization and a controller. The controller performs a first control operation which controls drive of the movable unit with respect to a first position as the center of movement where the weight of the movable unit itself and a supporting force of the elastic member are balanced, and a second control operation which controls drive of the movable unit with respect to a second position as the center of movement, the second position being shifted from the first position in the direction opposite to the gravity direction toward the optical axis of an optical system that forms an object image.
摘要:
The image-pickup apparatus includes a controller that controls the energization of the actuator for driving the aperture stop. The controller receives from a lens apparatus information on a time period for controlling the energization of the actuator, the information being set corresponding to the type of the actuator. During an image-pickup period in a state in which the aperture stop has been driven to a target aperture position, the controller outputs to the lens apparatus an instruction for stopping the energization of the actuator or reducing the energization amount thereof in response to the elapse of the time period. This can reduce power consumption.
摘要:
An optical apparatus is disclosed which can prevent displacement of subject images due to the initializing operation of the image stabilizing unit from being seen by a photographer through a finder. The apparatus comprises an image-stabilizing unit which includes a movable unit movable for image stabilization and balls movable in conjunction with the movement of the movable unit, and a controller which controls operations of the movable unit. The controller causes the movable unit to perform a specific operation for moving the balls to a specific position within a disappearance period of a subject image in a finder for observing the subject, the specific operation being a different operation from an image stabilization operation of the image-stabilizing unit.
摘要:
An optical apparatus is disclosed which can prevent displacement of subject images due to the initializing operation of the image stabilizing unit from being seen by a photographer through a finder. The apparatus comprises an image-stabilizing unit which includes a movable unit movable for image stabilization and balls movable in conjunction with the movement of the movable unit, and a controller which controls operations of the movable unit. The controller causes the movable unit to perform a specific operation for moving the balls to a specific position within a disappearance period of a subject image in a finder for observing the subject, the specific operation being a different operation from an image stabilization operation of the image-stabilizing unit.
摘要:
The invention relates to an optical apparatus having a vibration detector that detects vibration, a holding member that holds an image stabilizing optical system, an elastic member that elastically supports the holding member so that the holding member can shift within a plane perpendicular to an optical axis, a drive unit that generates a drive force resisting against an elastic force of the elastic member, a drive circuit that drives the drive unit, a control circuit that controls the position of the holding member, a temperature sensor that measures temperature, and a viscous damper that damps movement of the holding member in the drive direction. The control circuit changes the image stabilizing drive control characteristic of the drive circuit to compensate for changes in viscosity of the viscous damper with temperature.