摘要:
An improved film cartridge handling mechanism for effecting end-wise loading of a film cartridge into a deployable loading chamber of a camera for automatic film advance into a film transport path on closure of the loading chamber, for locking the loading chamber in the closed position when the filmstrip is advanced from the film cartridge, and for preventing the loading chamber from being deployed when the filmstrip is in the filmstrip transport path. A film cartridge is aligned with the filmstrip transport path, and the cartridge film door is opened on movement of the film loading chamber into the closed position. The filmstrip is advanced through the filmstrip transport path past the exposure gate and into a takeup chamber as exposures are made and rewound after all exposures are made. A filmstrip edge sensor is deflected by the presence of the filmstrip in the filmstrip transport path indicating that the film door is open and interferes with the opening mechanism for deploying the film loading cartridge.
摘要:
An ejector mechanism is provided for use in any system which uses photographic film, such as cameras, film development equipment and any other systems designed for film cartridges. One embodiment of the ejector mechanism includes an ejector slide, an ejector slide spring, a trigger lever, a trigger lever spring, a cover plate and a loading chamber. The ejector slide includes a spring hook, a first guide pin, a second guide pin, a trigger lever tab, a trigger lever notch and a film cartridge pin. The trigger lever includes a trigger lever spring attachment, a trigger lever slot, a pawl, a trigger lever head and a trigger control tab. The cover plate includes a ejector spring attachment, a trigger spring hook, a first guide slot and a trigger control ramp. The first guide slot engages the first guide pin attached to the ejector slide to support first guide pin movement along the first guide slot. The first guide slot further includes a latch tab and a latch slot. The loading chamber, which receives a film cartridge endwise, i.e. axially, includes a second guide slot, a trigger lever guide pin and a film cartridge access slot. The second guide slot engages the second guide pin attached to the ejector slide to support second guide pin movement along the second guide slot. The ejector slide spring is positioned on the ejector spring attachment and the spring hook. The trigger lever spring is positioned on the trigger spring hook and the trigger lever spring attachment. The ejector slide and the trigger lever are positioned between the loading chamber and the cover plate.
摘要:
A camera adapted to receive any one of a plurality of film loads having different film speeds includes a film speed sensing device for sensing the particular film speed of a film load in the camera, an aperture setting device adjustable to effect different-diameter film exposing apertures, a shaped memory alloy (abbreviated to SMA) wire which when subjected to electrical current for different durations corresponding to the respective film speeds of the film loads is heated to undergo corresponding shape changes to adjust the aperture setting device to the respective film exposing apertures, and a current supplying circuit connected to the SMA wire and to the film speed sensing device that subjects the SMA wire to electrical current for any one of the durations in accordance with the particular film speed of a film load in the camera.
摘要:
A camera includes a cartridge receiving chamber for receiving a film cartridge having a rotatable film spool with an accessible end cavity, and a winding spindle for rotationally engaging the film spool inside its end cavity to wind exposed film into the film cartridge. The winding spindle has a concentric outer collar that is elastically expandable inside the end cavity to effect frictional torque contact with the film spool, and a concentric inner spool core that is rotatable within a center hole in the outer collar to force the outer collar to expand into frictional torque contact with the film spool. A slight reverse rotation of the inner spool core relative to the outer collar allows the outer collar to resiliently retract out of frictional torque contact with the film spool. Then, the winding spindle can be removed from the end cavity to permit the film cartridge to be removed from the cartridge receiving chamber.
摘要:
A film-engaging sprocket drive for use with an edge-perforated filmstrip having successive uniform-pitch film perforations includes a set of two coaxial sprocket wheels each having a series of uniform-pitch film-engaging teeth that are similarly shaped to engage the filmstrip within the film perforations and that are arranged in successive pairs of one tooth from one sprocket wheel and another tooth from the other sprocket wheel. The sprocket wheels each are rotatable relative to the other to similarly increase the pitch of the two teeth in the respective pairs of teeth to greater than the pitch of the film perforations. A return spring is arranged to rotate one sprocket wheel relative to the other sprocket wheel to decrease the pitch of the two teeth in the respective pairs of teeth substantially to the pitch of the film perforations.
摘要:
An improved film cartridge handling mechanism for effecting end-wise loading of a film cartridge into a deployable film loading chamber of a camera and positioning of the filmstrip with respect to the camera transport path. The side pivoting, deployable film loading chamber positively seats and accurately aligns the film cartridge in reference to a datum axis as the film loading chamber is latched closed. In use of the invention with a thrust style film cartridge, the seating of the cartridge in the film loading chamber also aligns the film cartridge door with the camera filmstrip transport path. Upon movement of the film loading chamber to the latched or closed position, the film door is opened and the film cartridge spool is engaged with a filmstrip advance motor drive mechanism to advance the aligned filmstrip into the filmstrip transport path and to rewind the filmstrip after all exposures are made.
摘要:
A lens displacing mechanism for an objective lens comprising an actuator movable to displace the objective lens, and a shaped memory alloy (abbreviated to SMA) wire which when heated contracts to a memorized shape to move the actuator to displace the objective lens, is characterized in that the SMA wire has opposite ends that are fixed in place and an intermediate movable portion between the opposite ends that directly contacts the actuator to move the actuator when the SMA wire is heated to contract.
摘要:
A camera includes a rotatable film winder that coaxially engages a film spool to rotate the film spool in order to wind a filmstrip onto the film spool and that is retractable from the film spool to facilitate film loading into the camera, is characterized in that a flexible cord is connected to the film winder to be pulled to retract the film winder. Preferably, a chamber is provided for the film spool, a film door is closed to cover the chamber and is opened to uncover the chamber, and a latch member is movable into engagement with the film door to secure the film door closed and out of engagement with the film door to permit the film door to be opened and is connected with the flexible cord to pull the flexible cord to retract the film winder when the latch member is moved out of engagement with the film door.
摘要:
A camera comprising a cartridge receiving chamber for receiving a film cartridge with a filmstrip having a film leader, a backframe opening at which the filmstrip is to be exposed during picture-taking, and a guide arrangement located to facilitate movement of the film leader towards the backframe opening when the film cartridge is placed in the cartridge receiving chamber, is characterized in that the guide arrangement has a pair of leader guide surfaces, a first one of which is configured to guide a curled corner segment of a reduced-width leading portion of the film leader, and a second one of which is configured to guide a curved transitioning longitudinal edge segment intermediate the reduced width leading portion of the film leader and a full width portion of the film leader.
摘要:
A camera housing comprises an exterior longitudinal edge that is curved widthwise; a single opening through the exterior longitudinal edge that interrupts the exterior longitudinal edge to create a gap in the exterior longitudinal edge; and an insert having a longitudinal edge that is curved widthwise the same as the exterior longitudinal edge and configured to fit in the opening to align the longitudinal edge of the insert with the exterior longitudinal edge in order that the longitudinal edge of the insert is positioned within the gap to appear to be a continuation of the exterior longitudinal edge, and including a viewfinder window with an exterior flat face that is inclined into the longitudinal edge of the insert to at least partially interrupt the longitudinal edge of the insert in order to prevent the occurrence of image distortion when looking though the viewfinder window in the vicinity of the longitudinal edge of the insert.