Patent ID: 7046456

Claim:
A lens apparatus comprising: a first holding member which holds a first lens unit; a second holding member which holds a second lens unit disposed closer to an image plane side than the first lens unit; a first cam member which includes a first cam portion driving the first holding member in an optical axis direction; a second cam member which includes a second cam portion driving the first cam member in the optical axis direction; and a third cam member which includes a third cam portion driving the second holding member in the optical axis direction; wherein the lens apparatus can perform zoom operation in a state where the lens apparatus protrudes from a main body and perform housing operation in which the lens apparatus is housed into the main body, the first and second cam portions have shapes for moving the first holding member along a trajectory which is convex toward one side of the optical axis direction, and the third cam portion has a shape for moving the second holding member in the optical axis direction without inversion during the zoom operation in one direction.