Patent ID: 6339510
Filing Date: 2002-01-15
Classification: G02B,G03B

Abstract:
A camera system including a camera body and a lens unit which is interchangeably mounted to said camera body, said camera system comprising:a front optical system that is axially movable for zooming; a rear optical system that is axially movable for forming an image with a light beam from said front optical system; a drive mechanism which drives said rear optical system; a detector which detects a focal length; a circuit which outputs information for focusing said rear optical system, said information corresponding to the focal length detected by said detector; wherein said lens unit includes at least said front and rear optical systems and said circuit; a focus detector which detects a focus condition of said lens unit, and a controller which controls said drive mechanism on the basis of the information output from said output circuit and which further controls said drive mechanism on the bases of the focus condition detected by said focus detector and the information output from said output circuit.