Possesses vibration-proof function the magnification change optical system

摘要

PURPOSE: To obtain the variable power optical system having the vibration-proof function which can correct an image blur due to vibration while holding optical performance excellent. ;CONSTITUTION: The variable power optical system having a power variation part closer to an object side than a stop SP is provided with a variable vertical angle prism KP nearby the stop SP and when the image blur of a photographed image which is generated when the variable power optical system slants, is corrected by varying the vertical angle of the variable vertical angle prism KP, a requirement 0.0005d/fT0.01 is satisfied, where (d) is the actual distance from the variable vertical angle prism KP to the stop SP and fT is the focal length of the variable power optical system at its telephoto end.;COPYRIGHT: (C)1994,JPO&Japio