Patent ID: 7903346
Filing Date: 2011-03-08
Classification: G03B

Abstract:
1. A lens apparatus comprising: a first barrel member; a second barrel member on which a cam for moving a lens unit in an optical axis direction is formed, the second barrel member being disposed inside or outside of the first barrel member and rotatable around an optical axis with respect to the first barrel member; a first rolling bearing configured to prevent relative displacements of the first and second barrel members in the optical axis direction and in a radial direction, the first rolling bearing being rotatable between the first and second barrel members; and a second rolling bearing configured to prevent the relative displacement of the first and second barrel members in the radial direction, the second rolling bearing being rotatable between the first and second barrel members, wherein the first rolling bearing and the second rolling bearing are arranged at positions away from each other in the optical axis direction between the first and second barrel members.