Patent ID: 6404568
Filing Date: 2002-06-11
Classification: G02B

Abstract:
A lens barrel comprising:first and second tubes slidable in an optical axis direction of an optical system; a base for accommodating said first and second tubes therein; a single motor as a drive source for sliding both said first and second tubes; a first feed screw located in said second tube for sliding said first tube in response to a drive force of said motor; a second feed screw located in said base for sliding said second tube in response to a drive force of said motor; and a drive gear for transmitting a drive force of said motor to said first and second tubes, wherein said first tube may protrude from an interior of said second tube toward a subject, and said second tube may protrude from an interior of said base toward the subject; said drive gear comprises a cylindrical gear and a shaft gear having a shaft inserted in said cylindrical gear, said cylindrical gear and said shaft gear rotating about a common rotation axis; and said cylindrical gear is interposed between said first feed screw and said motor, said shaft gear being interposed between said second feed screw and said motor.