IMAGE-BLUR CORRECTION DEVICE, IMAGE PICKUP DEVICE, AND OPTICAL DEVICE
First Claim
1. An image compensation device, comprising;
- a shake detection unit configured to detect a shake, wherein the detection unit has two different detection axes which are orthogonal to an optical axis;
a compensation unit configured to compensate an image blur to move a compensation member based on a detection result of the shake detection unit, wherein the compensation unit has two different compensation axes which are orthogonal to an optical axis, and wherein one of the compensation axes is shifted by a predetermined degree in relation to one of the detection axes; and
a control unit configured to control the compensation unit to move within an octagon region which is formed based on both the two detection axes and the two compensation axes.
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Abstract
An image-blur correction device includes a vibration detection unit which detects vibrations of two different detection axes in a plane orthogonal to an optical axis, a correction unit which corrects vibration using a correction optical system which is displaced in directions of at least two correction axes different from the detection axes in the plane, a calculation unit that calculates amounts of displacements used to drive the correction optical system so that image-blur generated due to the vibrations is corrected based on amounts of vibrations obtained using the vibration detection unit, a coordinate conversion unit which rotates amounts of vibrations in the two detection axes relative to the corresponding at least two correction axes for conversion through calculations, and a restriction unit which restricts a driving range of the correction unit based on a displacement-amount restriction value obtained from a performance limitation region of the correction optical system.
114 Citations
13 Claims
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1. An image compensation device, comprising;
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a shake detection unit configured to detect a shake, wherein the detection unit has two different detection axes which are orthogonal to an optical axis; a compensation unit configured to compensate an image blur to move a compensation member based on a detection result of the shake detection unit, wherein the compensation unit has two different compensation axes which are orthogonal to an optical axis, and wherein one of the compensation axes is shifted by a predetermined degree in relation to one of the detection axes; and a control unit configured to control the compensation unit to move within an octagon region which is formed based on both the two detection axes and the two compensation axes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling an image compensation device, the method comprising:
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detecting a shake in two different detection axes which are orthogonal to an optical axis; compensating an image blur to move a compensation member based on a detection result, wherein the compensation member moves in two different compensation axes which are orthogonal to an optical axis, and wherein one of the compensation axes is shifted by a predetermined degree in relation to one of the detection axes; and controlling the compensation member to move within an octagon region. - View Dependent Claims (10, 11, 12, 13)
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Specification