A light shielding structure of a retractable lens barrel includes a lens system,
a lens frame to which a lens group is fixed; at least one movable annular member
into which the lens frame is screw-engaged, and which is moved along the optical
axis in a predetermined moving manner; a light shield member which is supported
by the movable annular member to be movable along the optical axis relative to
the movable annular member, and having a rearward movement extremity relative to
the movable annular member; and a biasing member which is positioned between the
light shield member and the lens frame in a compressed fashion to bias the light
shield member toward the rearward movement extremity thereof relative to the movable
annular member.
