Patent ID: 8564895
Filing Date: 2013-10-22
Classification: G02B,Y10T

Abstract:
1. A lens barrel comprising: a first retention member that includes a first engaging portion, which engages with a first guide shaft, and that retains a first optical system and a second optical system, which is different from the first optical system, to be integrally movable along the first guide shaft; and a second retention member that includes a second engaging portion, which engages with the first guide shaft, and that retains a third optical system, which is disposed between the first optical system and the second optical system, to be movable independently of the first and second optical systems along the first guide shaft, wherein: the first retention member includes a third engaging portion that engages with the first guide shaft at a spacing from the first engaging portion, the second retention member includes a fourth engaging portion that engages with the first guide shaft at a spacing from the second engaging portion, and the first and third engaging portions and the second and fourth engaging portions alternatingly engage with the first guide shaft.