Lens protection mechanism and camera with lens protection mechanism
AssigneeFujinon Corporation
InventorKazuhiko Onda
Life of this patent
Estimating the term…
Abstract
A simple and compact lens protection mechanism for protecting an optical lens system in a lens barrel comprises a lens barrier member rotatable in a plane perpendicular to an optical axis between an open position for uncovering the optical lens system and a closed position for covering the optical lens system, a neutralizing spring incorporated with the lens barrier member, and a barrier drive ring operationally coupled to the lens barrier member by the neutralizing spring. The barrier drive ring is rotatable in opposite directions so as to drive the lens barrier member through the neutralizing spring between the open position and the closed position.
Claims7
A lens mechanism for protecting an optical lens system in an optical lens barrel, comprising:
- a lens barrier member disposed in front of the optical lens system in the optical lens barrel, said lens barrier member being capable of rotating in a plane perpendicular to an optical axis of the optical lens system between an open position in which said lens barrier member uncovers the optical lens system and a closed position in which said lens barrier member covers the optical lens system for protection;
- a neutralizing spring incorporated with said lens barrier member;
- and
- a barrier drive ring operationally coupled to said lens barrier member by said neutralizing spring, said barrier drive ring being rotatable in opposite directions about said optical axis of the optical lens system so as to drive said lens barrier member through said neutralizing spring between said open position and said closed position.
Dependencies are inferred from the claim text.