Shutter device of camera
AssigneeFuji Photo Film Co., Ltd.
InventorKazuo Kamata
Life of this patent
Estimating the term…
Abstract
A shutter device loaded in a fixed focus camera for making soft-focus photograph includes a swingable shutter drive member and two shutter blades for opening and closing a shutter opening. When the shutter drive member swings in response to photographing operation, the shutter blades rotate oppositely to each other such that the shutter opening gradually appears. While opening, the shutter blades continuously form a small stop. After a flashlight is emitted during forming the small stop, the shutter blades rotate moreover and the shutter opening is entirely exposed. Then the shutter blades close to cover the shutter opening entirely.
Claims18
A shutter device included in a camera which is provided with a shutter opening positioned at a taking lens, for opening and closing said shutter opening to make an exposure of a photo film in response to a photographing operation, said shutter device comprising:
- a shutter drive member for swinging from a primary position to an end position responding to said photographing operation, and thereafter back to said primary position;
- at least one shutter blade movable between a closed position, a small stop position, and an open position, for entirely covering said shutter opening when in said closed position, for partially exposing said shutter opening when in said small stop position, and for entirely exposing said shutter opening when in said open position;
- and
- a transmission member for connecting said shutter drive member with said shutter blade, said transmission member being actuated in accordance with the moving of said shutter drive member to said end position, for moving said shutter blade from said close position to said small stop position, and for keeping said shutter blade in said small stop position for a predetermined time, and thereafter for moving said shutter blade from said small stop position to said open position;
- wherein said camera further includes a flash device for emitting a flashlight, and said flash device is actuated while said shutter blade is set to said small stop position.
A shutter device included in a camera which is provided with a shutter opening positioned at a taking lens, for opening and closing said shutter opening to make an exposure of a photo film in response to a photographing operation, said shutter device comprising:
- a shutter drive member for swinging from a primary position to an end position responding to said photographing operation, and thereafter back to said primary position;
- at least one shutter blade movable between a closed position, a small stop position, and an open position, for entirely covering said shutter opening when in said closed position, for partially exposing said shutter opening when in said small stop position, and for entirely exposing said shutter opening when in said open position;
- and
- a transmission member for connecting said shutter drive member with said shutter blade, said transmission member being actuated in accordance with the moving of said shutter drive member to said end position, for moving said shutter blade from said close position to said small stop position, and for keeping said shutter blade in said small stop position for a predetermined time, and thereafter for moving said shutter blade from said small stop position to said open position;
- wherein the shutter device is arranged so that the primary position of the shutter drive member is the same for every exposure and the end position of the shutter drive member is the same for every said exposure.
A shutter device included in a camera which is provided with a shutter opening positioned at a taking lens, for opening and closing said shutter opening to make an exposure of a photo film in response to a photographing operation, said shutter device comprising:
- a movable shutter drive member urged by a spring force to a primary position;
- a means for striking the shutter drive member to move the shutter drive member against the spring force away from the primary position to an end position in accordance with said photographing operation, the shutter drive member being moved back to said primary position by the spring force;
- at least one shutter blade movable between a closed position, a small stop position, and an open position, wherein the at least one shutter blade entirely covers said shutter opening when in said closed position, partially exposes said shutter opening when in said small stop position, and entirely exposes said shutter opening when in said open position;
- and
- a transmission member for connecting said shutter drive member with said shutter blade, said transmission member being actuated in accordance with the moving of said shutter drive member to said end position, for moving said shutter blade from said close position to said small stop position, and for keeping said shutter blade in said small stop position for a predetermined time, and thereafter for moving said shutter blade from said small stop position to said open position.
Dependencies are inferred from the claim text.