Patent ID: 7944634

Claim:
A support structure for a light quantity control unit of a lens barrel, comprising: a holding frame which holds a light quantity control member; a front support member and a rear support member positioned in front of and behind said holding frame, respectively, a distance between said front support member and said rear support member in an optical axis direction being fixed; a front guide pin and a front pin support hole which are formed on one and the other of said holding frame and said front support member, said front guide pin extending in said optical axis direction and being slidably inserted into said front pin support hole; and a rear guide pin and a rear pin support hole which are formed on one and the other of said holding frame and said rear support member, said rear guide pin extending in said optical axis direction and being slidably inserted into said rear pin support hole, wherein said holding frame is supported by said front guide pin, said front pin support hole, said rear guide pin and said rear pin support hole to be movable in said optical axis direction relative to said front support member and relative to said rear support member.