Shake corrector for use in an optical apparatus, a photographing apparatus provided with a shake corrector, and a shake correcting method

Claim 2

A shake corrector for use in an optical apparatus provided with a correction lens, comprising: a temperature detector which detects an ambient temperature; and a controller which controls driving of the correction lens to correct a shake of an optical axis of the optical apparatus with respect to an object, the controller including a drive control circuit which generates a control signal for controlling the driving of the correction lens based on a detected temperature, wherein the optical apparatus further includes: a moving mechanism which moves the correction lenses, the moving mechanism having a temperature characteristic in an aspect of driving performance; and the drive control circuit generates a control signal in accordance with the temperature characteristic of the moving mechanism.

Claim 3

A shake corrector as defined in claim 1, wherein the drive control circuit sets a gain for the control signal based on a detected temperature.

Claim 4

A shake corrector as defined in claim 1 is usable in a photographing apparatus having a taking lens.

Claim 5

A shake corrector as defined in claim 1, wherein the controller further includes: a position detector which detects a position of the correction lens; and a feedback signal generator which generates a feedback signal indicative of a difference between a control target position of the correction lens and a detected position of the correction lens.

Claim 6

A shake corrector as defined in claim 1, wherein the controller further includes: a shake detector which detects a shake of an optical axis of an optical apparatus with respect to an object; and a target position setter which sets a target position of the correction lens based on a detected shake.

Claim 7

A shake corrector as defined in claim 5, wherein the drive control circuit sets a gain for the control signal based on a difference between a set target position of the correction lens and an instant position of the correction lens.

Claim 8

A shake corrector as defined in claim 6, wherein the gain includes a proportional gain and a differential gain.

Claim 9

A shake corrector as defined in claim 7, wherein at least one of the proportional gain and the differential gain is set based on a detected temperature.

Claim 10

The shake corrector of claim 1, wherein the optical apparatus further includes a driver which provides a driving force to the moving mechanism, the driver having a temperature characteristic in an aspect of driving performance.

Claim 11

The shake corrector of claim 9, wherein the drive control circuit generates a control signal in accordance with the temperature characteristic of the driver.

Claim 12

A shake corrector as defined in claim 10, wherein the drive control circuit generates a control signal to keep the driving performance of the driver substantially constant independently of a variation in the temperature.

Claim 13

A shake corrector as defined in claim 1, wherein the drive control circuit generates a control signal to compensate for a change in the driving performance of the moving mechanism according to a variation in the temperature.

Claim 14

A photographing apparatus comprising: a taking lens which introduces light from an object to a photosensitive image medium; a correction lens which is movable in specified directions; a shake detector which detects a shake of an optical axis of the taking lens with respect to the object; a basic gain setter which sets a basic gain based on a target position of the correction lens to correct a detected shake and an instant position of the correction lens; a temperature detector which detects an ambient temperature of the photographing apparatus; a correction gain setter which sets a correction gain to correct a set basic gain based on a detected temperature; and a drive controller which controls the drive of the correction lens in accordance with a corrected basic gain.

Claim 15

A photographing apparatus comprising: a taking lens which introduces light from an object to a photosensitive image medium; a correction lens which is movable in specified directions; a shake detector which detects a shake of an optical axis of the taking lens with respect to the object; a basic gain setter which sets a basic gain based on a target position of the correction lens to correct a detected shake and an instant position of the correction lens; a temperature detector which detects an ambient temperature of the photographing apparatus; a correction gain setter which sets a correction gain to correct a set basic gain based on a detected temperature; and a drive controller which controls the drive of the correction lens in accordance with a corrected basic gain.

Claim 16

A photographing apparatus as defined in claim 13, wherein the basic gain includes at least one of a proportional gain and a differential gain.

Claim 17

A photographing apparatus as defined in claim 14, wherein the correction gain setter sets a correction gain corresponding to a basic gain.

Claim 18

A photographing apparatus as defined in claim 13, wherein the drive controller includes a motor which produces a torque of driving the correction lens, the motor having a temperature characteristic in an aspect of driving performance; and the correction gain setter sets a correction gain to compensate for the temperature characteristic of the motor.

Claim 21

A method as defined in claim 17, wherein the basic gain includes at least one of a proportional gain and a differential gain.

Claim 22

A method as defined in claim 18, wherein a correction gain is set which corresponds to a basic gain.

Claim 23

A method as defined in claim 17, wherein the correction lens is driven by a torque of a motor, the motor having a temperature characteristic in an aspect of driving performance; and a correction gain is set to compensate for the temperature characteristic of the motor.

Claim 24

A shake corrector for use in an optical apparatus provided with a correction lens, comprising: a temperature detector which detects an ambient temperature; said temperature detector having first and second output lines; and a controller which controls driving of the correction lens to correct a shake of an optical axis of the optical apparatus with respect to an object, the controller including a control signal generator which generates a control signal of controlling the driving of the correction lens based on a detected temperature, wherein the control signal generator sets a gain for the control signal based on a detected temperature from said first output line, and the control signal generator corrects said gain for the control signal based on a detected temperature from said second output line.

Claim 25

A shake corrector for use in an optical apparatus provided with a correction lens, comprising: a temperature detector which detects an ambient temperature; said temperature detector having first and second output lines; and a controller which controls driving of the correction lens to correct a shake of an optical axis of the optical apparatus with respect to an object, the controller including a control signal generator which generates a control signal of controlling the driving of the correction lens based on a detected temperature, wherein the control signal generator sets a gain for the control signal based on a detected temperature from said first output line, and the control signal generator corrects said gain for the control signal based on a detected temperature from said second output line.

Claim 26

A photographing apparatus comprising: a taking lens which introduces light from an object to a photosensitive image medium; a correction lens which is movable in specified directions; a shake detector which detects a shake of an optical axis of the taking lens with respect to the object; a temperature detector which detects an ambient temperature of the photographing apparatus; a basic gain setter which sets a basic gain based on a target position of the correction lens to correct a detected shake, an instant position of the correction lens, and a detected temperature; a correction gain setter which sets a correction gain to correct the set basic gain based on a detected temperature; and a drive controller which controls the drive of the correction lens in accordance with a corrected basic gain.

Claim 27

A photographing apparatus comprising: a taking lens which introduces light from an object to a photosensitive image medium; a correction lens which is movable in specified directions; a shake detector which detects a shake of an optical axis of the taking lens with respect to the object; a temperature detector which detects an ambient temperature of the photographing apparatus; a basic gain setter which sets a basic gain based on a target position of the correction lens to correct a detected shake, an instant position of the correction lens, and a detected temperature; a correction gain setter which sets a correction gain to correct the set basic gain based on a detected temperature; and a drive controller which controls the drive of the correction lens in accordance with a corrected basic gain.