Patent ID: 7782557
Filing Date: 2010-08-24
Classification: G03B

Abstract:
1. A lens position adjusting device of a lens barrel comprising: a stationary ring, a manual rotating ring which is screw-engaged with said stationary ring to be manually rotatable about an optical axis to move a movable lens group in said optical axis direction, and a cam ring which rotates integrally with said manual rotating ring about said optical axis and moves integrally with said manual rotating ring in said optical axis direction, wherein said manual rotating ring includes an operating ring member; and a sub-ring member which is screwed into said stationary ring, wherein said operating ring member and said sub-ring member are coupled to each other so that a relative rotation position therebetween about said optical axis is adjustable, wherein said lens group moves in said optical axis direction via a cam device provided in said cam ring as said cam ring rotates while moving in said optical axis direction, and wherein said lens position adjusting device comprises a relative axial position adjusting device for adjusting a relative position between said manual rotating ring and said cam ring in said optical axis direction.