Lens-barrier device for a camera
AssigneeFuji Photo Film Co., Ltd.
InventorsTakao Nakanishi, Kenichi Shiba
Life of this patent
Estimating the term…
Abstract
A camera is provided with a lens barrier moving between a closed position and an open position. The lens barrier is urged toward the open position by an urging mechanism, and is kept in the closed position by a locking mechanism. The urging mechanism urges the lens barrier with a compression spring. When the lens barrier is moved from the open position to the closed position, a movement amount thereof is reduced by a minimum length of the compression spring compressed in accordance with the movement of the lens barrier. In order to compensate the amount corresponding to the minimum length of the compression spring, a slider is provided. The slider is movable within a predetermined range together with the lens barrier when moving the lens barrier beyond the closed position.
Claims17
A lens-barrier device for protecting a taking lens of a camera, comprising:
- a lens barrier moving from an open position for exposing said taking lens to a closed position for covering said taking lens, said lens barrier being manually operated;
- an urging member for urging said lens barrier toward the open position;
- and
- a locking mechanism for keeping said lens barrier in the closed position against said urging member, said locking mechanism holding said lens barrier in the closed position upon moving said lens barrier from the open position to a lock switch position passing across the closed position, and the hold of said lens barrier being released upon moving said lens barrier to the lock switch position again to return said lens barrier to the open position by means of said urging member.
A lens-barrier device for protecting a taking lens of a camera, comprising:
- a lens barrier moving between an open position for exposing said taking lens and a closed position for covering said taking lens;
- and
- an urging mechanism for urging said lens barrier toward the open position,
- wherein said urging mechanism comprises:
- a compression spring for urging said lens barrier toward the open position;
- a press member for abutting on one end of said compression spring, said press member moving together with said lens barrier and pressing said compression spring;
- and
- a slider for abutting on the other end of said compression spring, said slider being associated with said lens barrier and moving in a movement direction of said lens barrier within a predetermined range when said lens barrier is moved beyond the closed position.
Dependencies are inferred from the claim text.