Patent ID: 8184382
Filing Date: 2012-05-22
Classification: G02B,G03B

Abstract:
1. An image pickup apparatus comprising: a lens unit; a rectilinear motion guide unit that is restricted to rotate around the optical axis of said lens unit; a rectilinear motion member that is restricted to rotate around the optical axis by engagement with said rectilinear motion guide unit; a rectilinear motion barrel that is restricted to rotate around the optical axis by connecting with said rectilinear motion member, wherein the rectilinear motion barrel guides said lens unit rectilinearly; and a cam barrel that is sandwiched from front and rear in a direction along the optical axis by said rectilinear motion member and said rectilinear motion barrel, wherein the cam barrel is formed with a cam for controlling motion of said lens unit along the optical axis, wherein the cam barrel is movable together with said rectilinear motion member and said rectilinear motion barrel along the optical axis by the sandwich of said rectilinear motion member and said rectilinear motion barrel.