Patent ID: 6062551
Filing Date: 2000-05-16
Classification: F16F,G03F

Abstract:
An active vibration-isolating device, comprising:an air spring which elastically supports a platform on which equipment is capable of being mounted;a piston member which abuts against and supports the platform;a piezoelectric actuator which can be externally controlled, said piezoelectric actuator having a piston member attached to at least one end of said piezoelectric actuator;a working fluid which transmits a displacement of said piezoelectric actuator to said piston member which abuts against and supports the platform via said piston member which is attached to at least one end of said piezoelectric actuator in a driving operation of said piezoelectric actuator; anda fluid path in which said working fluid is hermetically filled and through which said piston member which is attached to at least one end of said piezoelectric actuator is attached with said piezoelectric actuator,wherein a position where said piston member which abuts against and supports the platform is spatially separated from a position where said air spring elastically supports the platform.