Patent ID: 6456789
Filing Date: 2002-09-24
Classification: G03B

Abstract:
A device for correcting a tremble of a focused image comprising:a tremble detector that detects a tremble of optical axes of an optical device; correction optical systems that correct said tremble of said optical axes; driving devices that drive said correction optical systems; a controlling system that controls said driving devices such that said correction optical systems are driven following said tremble of said optical axes in order to cancel a focused image tremble of an object due to said tremble of said optical axes; wherein said controlling system controls said driving devices such that: when said tremble of said optical axes becomes beyond a correctable range of said correction optical systems, said correction optical systems are stopped from being driven following said tremble of said optical axes; when a direction of said tremble of said optical axes is reversed in a situation that said tremble of said optical axes is out of said correctable range, said correction optical systems are restarted, after having been stopped, to be driven following said tremble of said optical axes; and when said tremble of said optical axes becomes beyond said correctable range till a time at which said direction of said tremble of said optical axes is reversed, said correction optical systems approach a standard position by a predetermined time constant, said optical axes of said correction optical systems being coaxial with optical axes of other optical systems of imaging optical systems of said optical device at said standard position.