Patent ID: 6449432
Filing Date: 2002-09-10
Classification: G02B

Abstract:
A device for correcting a tremble of a focused image comprising:a plurality of tremble detectors that detect a tremble of an optical axis of an optical device; a correction optical system that corrects the tremble; a plurality of driving devices that drive said correction optical system; a controlling system that controls said driving devices such that said correction optical system is driven in order to cancel a focused image tremble of an object due to the tremble of said optical axis; a plurality of direct-current-component removing systems, corresponding to said plurality of tremble detectors, that respectively remove direct-current-components from output signals of said corresponding tremble detectors, each direct-current-component removing system comprising a circuit element having a predetermined resistance value, a capacitor, and a difference amplifier that outputs a difference between a first input signal, input from a first signal line connected to said corresponding tremble detector, and a second input signal input from a second signal line connected to said corresponding tremble detector through said circuit element and said capacitor; and a plurality of tremble-detection initializing systems, corresponding to said plurality of tremble detectors and said plurality of direct-current-component removing systems, that respectively initialize said output signals of said corresponding tremble detectors, wherein each tremble-detection initializing system short-circuits said circuit element of said corresponding direct-current-component removing system and connects only said capacitor in said second signal line of said corresponding direct-current-component removing system.