Vibration reduction device
AssigneeNikon Corporation
InventorsNorikatsu Konno, Shoei Nakamura
Life of this patent
Estimating the term…
Abstract
A vibration reduction device includes a vibration detection device for detecting vibrations, a vibration reduction optical system for reducing the vibrations by its movement, a vibration reduction optical system drive device for driving the vibration reduction optical system on the basis of the detection result of the vibration detection device, a memory device for storing a predetermined frequency region, a comparison device for comparing the stored frequency region with the frequency of the vibrations detected by the vibration detection device, a lock device for locking the operation of the vibration reduction optical system, and a control device for controlling the lock device on the basis of the comparison result of the comparison device.
Claims28
A vibration reduction device comprising:
- a vibration detection device which detects a vibration;
- a vibration reduction optical system which reduces the vibration by its movement;
- a vibration reduction optical system drive device which drives said vibration reduction optical system on the basis of a detection result of said vibration detection device;
- a memory device which stores a predetermined frequency region;
- a comparison device which compares the stored frequency region with a frequency of the vibration detected by said vibration detection device;
- a lock device which locks an operation of said vibration reduction optical system;
- and
- a control device which controls said lock device on the basis of a comparison result of said comparison device.
A vibration reduction device to be applied to an optical apparatus for forming an image, comprising:
- a vibration detection device which detects a vibration generated in said optical apparatus;
- a vibration reduction optical system which is movable to attain image vibration reduction;
- a vibration reduction optical system driving device which drives said vibration reduction optical system on the basis of a detection result of said vibration detection device;
- a memory device which stores a predetermined frequency;
- a comparison device which compares the stored frequency with a frequency of the vibration detected by said vibration detection device;
- a lock device which locks an operation of aid vibration reduction optical system;
- and
- a control device which controls said lock device on the basis of a comparison result of said comparison device.
A vibration reduction method for an optical system having a vibration reduction optical system which reduces images vibration by its movement, comprising the steps of:
- detecting a vibration;
- driving said vibration reduction optical system on the basis of the detected vibration;
- comparing a frequency of the detected vibration with a predetermined frequency range;
- locking the driving of said vibration reduction optical system on the basis of the comparison result.
A vibration reduction method to be applied to an optical apparatus for forming an image having a vibration reduction optical system which is movable to attain image vibration reduction, comprising:
- detecting a vibration generated in said optical apparatus;
- driving said vibration reduction optical system on the basis of a detected vibration;
- comparing a frequency of the detected vibration with a predetermined frequency range;
- locking the driving of said vibration reduction optical system on the basis of the comparison result.
A method of reducing vibration of an optical apparatus including a vibration reduction optical system which reduces vibration by its movement, said method comprising:
- detecting a vibration;
- outputting a signal representing a value of a frequency of the vibration;
- driving the vibration reduction optical system based on the detected value;
- storing a certain frequency value in a memory;
- comparing said certain value with said output value;
- and
- locking said vibration reduction optical system;
- changing a holding state of a lock device based on said comparing.
A method of reducing vibration of an optical apparatus including a vibration reduction optical system that is movable to attain image vibration reduction, said method comprising:
- detecting a vibration;
- outputting a signal related to a frequency value of said vibration;
- driving the vibration reduction optical system based on the output value;
- storing a certain frequency value in a memory;
- comparing said certain value with said output value;
- using a holding device to hold said vibration reduction optical system at a predetermined position;
- and
- changing a holding state of said holding device based on said comparing.
A vibration reduction device comprising:
- a vibration detection device to detect a vibration and output a signal representing a frequency value related to the vibration;
- a vibration reduction optical system to reduce the vibration by movement thereof;
- a vibration reduction optical system drive device to drive said vibration reduction optical system on the basis of a detection result of said vibration detection device;
- a memory device to store a certain frequency value;
- a comparison device to compare the stored frequency value with said frequency value represented by said signal output by said vibration detection device;
- a lock device to lock said vibration reduction optical system;
- and
- a control device to change a locking state of said lock device on the basis of a comparison result of said comparison device.
A vibration reduction device comprising:
- a vibration detection device to detect a vibration and output a signal representing a frequency value related to the vibration;
- a vibration reduction optical system to reduce the vibration by it movement;
- a vibration reduction optical system drive device to drive said vibration reduction optical system on the basis of a detection result of said vibration detection device;
- a memory device to store a certain frequency value;
- a comparison device to compare the stored frequency value with said frequency value represented by said signal output by said vibration detection device;
- a holding device to hold said vibration reduction optical system at a predetermined position;
- and
- a control device to change a holding state of said holding device on the basis of a comparison result of said comparison device.
A vibration reduction device comprising:
- a vibration detection device to detect vibration;
- a vibration reduction optical system to reduce the vibration by movement of the vibration reducing optical system;
- a vibration reduction optical system drive device to drive said vibration reduction optical system on the basis of a detection result of said vibration detection device;
- and
- a control device to effect, when the frequency of output of said vibration detection device falls within a predetermined frequency range, which is intrinsic to the vibration detection device, a control which is different from a control, which is effected when the frequency of output of said vibration detection device falls outside said predetermined frequency range.
Dependencies are inferred from the claim text.