Patent ID: 8638508

Claim:
A lens barrel comprising: a holder configured to hold a lens; a fixing unit configured to fix the holder; an intermediate unit arranged along an optical axis between the fixing unit and the holder so as to overlap the fixing unit and the holder in an optical axis direction of the lens; a first fixing member configured to fix the intermediate unit and the holder arranged so as to overlap the fixing unit and the holder in the optical axis direction, while maintaining a gap between the intermediate unit and the holder along the optical axis; a second fixing member configured to fix the fixing unit and the intermediate unit arranged so as to overlap the fixing unit and the holder in the optical axis direction, while maintaining a gap between the fixing unit and the intermediate unit along the optical axis; a first tilter configured to tilt an optical axis of the lens around a first straight line that is unparallel to the optical axis of the lens, by changing a tilt of the holder relative to the intermediate unit; and a second tilter configured to tilt the optical axis of the lens around a second straight line that is unparallel to the optical axis of the lens and the first straight line, by changing a tilt of the intermediate unit relative to the fixing unit, wherein the first tilter includes a first screw which perforates the intermediate unit and is engaged with the holder, and a second screw which perforates the intermediate unit and is configured to compress a surface of the holder, wherein the second tilter includes a third screw which perforates the fixing unit and is engaged with the intermediate unit, and a fourth screw which perforates the fixing unit and is configured to compress a surface the intermediate unit, wherein the first screw and the third screw are drawing screws, and the second screw and the fourth screw are pushing screws, wherein the tilt of the holder relative to the intermediate unit is changed to a first direction by fastening the first screw and is changed to a direction opposite to the first direction by fastening the second screw, and wherein the tilt of the intermediate unit to the fixing unit is changed to a second direction by fastening the third screw and is changed to a direction opposite to the second direction by fastening the fourth screw.