Patent ID: 7420747
Filing Date: 2008-09-02
Classification: G02B,G03B

Abstract:
1. A lens drive for moving a lens arranged in a housing, comprising: a rotating knob located out of the optical axis of said lens with a rotation axis unparallel to the optical axis of said lens and arranged outside said housing; a knob-side cam pin provided on said rotating knob; a lens-side cam pin provided to integrally move with said lens; and a cam plate arranged in said housing and formed with a knob-side cam groove receiving said knob-side cam pin and a lens-side cam groove receiving said lens-side cam pin, wherein said lens includes a first lens and a second lens, said rotating knob has a first rotating knob and a second rotating knob, said knob-side cam pin includes a first knob-side cam pin provided on said first rotating knob and a second knob-side cam pin provided on said second rotating knob, said lens-side cam pin includes a first lens-side cam pin provided to integrally move with said first lens and a second lens-side cam pin provided to integrally move with said second lens, said cam plate includes a first cam plate provided with a first knob-side cam groove receiving said first knob-side cam pin and a first lens-side cam groove receiving said first lens side cam pin and movable linearly along a direction intersecting with the direction of the optical axis, and a second cam plate provided with a second knob-side cam groove receiving said second knob-side cam pin and a second lens-side cam groove receiving said second lens-side cam pin and movable linearly along said optical axis and along said direction intersecting with the direction of said optical axis, said first rotating knob is so rotated as to move said first cam plate linearly along said direction intersecting with the direction of said optical axis for moving said first lens along the optical axis of said first lens following this movement of said first cam plate, and said second rotating knob is so rotated as to move said second cam plate linearly along said direction intersecting with the direction of said optical axis for moving said second lens along the optical axis of said second lens following this movement of said second cam plate.