摘要:
A film feeding device for a camera including a rotatable center shaft member having a protrudent clutch pin, the center shaft being movable alone in the direction of its axis; a rotatable film feeding sprocket which has a slot to allow the protrudent pin to engage therewith and which thus moves together with the center shaft member when the center shaft rotates; a drive device which is provided with a clutch groove to allow the protrudent pin to engage with and disengage from the clutch groove, the drive device being arranged to rotate in response to a film winding operation. When the center shaft shifts to one side defined by the slot, the protrudent clutch pin comes to engage with the clutch groove to cause the sprocket to rotate in response to the film winding operation. When the center shaft shifts to the other side, the protrudent clutch pin is disengaged from the clutch groove to permit free rotation of the sprocket. Thus, rotation of the sprocket is controlled by means of the single protrudent pin in such a manner as to minimize variation in spacing between one photographed picture and another.
摘要:
An exposure control apparatus operating with selection of the diaphragm preselection and shutter preselection automatic exposure control modes is provided with first and second signal shapers arranged to cooperate with a lens aperture mechanism through a common intermediate member. Upon setting of a desired diaphragm value in the lens aperture mechanism, the intermediate member is driven along with the first signal shaper in exactly corresponding relation. In the shutter preselection automatic diaphragm control mode, while the first signal shaper is cut off from connection with an exposure value computer, the second signal shaper is driven for scanning operation to produce ever-varying outputs which are compared with the output of the computer upon coincidence to stop movement of the lens aperture mechanism, thereby the scanning result is translated to the proper diaphragm presetting, as the intermediate member is arranged to delay the start of movement of the lens aperture mechanism from the start of the scanning operation by a time interval determined by taking into account the signal response characteristics of the automatic diaphragm adjusting mechanism.
摘要:
In a combination of a photographic camera with an accessory equipment such as a motor drive unit attached thereto, when the voltage of a power source or battery provided in the camera for application to an automatic exposure control circuit thereof has fallen below a satisfactory operating level, a transfer switch is automatically operated to shift the connection of the exposure control circuit from the battery of the camera to an electrical power source or battery provided in the accessory equipment.
摘要:
The present invention relates to a winding up device for a camera, in which a motor driven winding up shaft, a manual winding up member rotating the winding up shaft by means of manual operation and a one-way clutch means between the winding up shaft and the manual winding up member are provided, so designed that a manual winding up angle conversion means for making the ratio of the rotation angle of the manual winding up member to that of the winding up shaft at a certain determined value is provided between the manual winding up member and the one-way clutch means in such a manner that the rotation angle of the manual winding up is optionally variable by means of the manual winding up angle conversion means while the winding up angle at the time of motor drive is invariable.
摘要:
A data recording device for a single reflex camera has a demountable view finder in which a data signal from a source is guided by optical means along a data recording optical path and divided, for viewing and entering the camera.
摘要:
The present invention relates to an exposure information setting device for a camera having a digital control system in which the aperture value of the lens is applied to the exposure amount control circuit as digital information by means of the aperture value setting mechanism. The device is so designed that the first comb tooth shaped conductor pattern and the second comb tooth shaped conductor pattern are arranged in parallel with each other in such a manner that a phase difference takes place between them. A pair of series of pulses are obtained by making the contact in functional engagement with the aperture value setting operation, moving slidingly over the first and the second conductor patterns. The direction along which the aperture value information varies is detectable by applying the pair of series of pulses thus obtained to the exposure operational circuit through the phase sorting circuit.
摘要:
In the disclosed camera exposure control device, a first control automatically controls the camera exposure on the basis of a signal generated by a first brightness sensor. A second control automatically controls an exposure on the basis of a manual setting that responds to a second brightness sensor. A mode selector enables either an electromagnetic actuator that operates the first exposure control or a mechanical actuator that operates the second control.
摘要:
A single lens reflex camera or a camera system uses a camera body unit and has a view finder unit permanently fixed to or detachably mounted on the camera body. A first terminal on the camera body is electrically connected with a synchronous device which is so arranged as to provide a synchronous signal related to the operation of a shutter device, while a second terminal which can contact with or can be coupled to the first terminal on said camera body when the view finder unit is attached to the camera body unit, is provided on the view finder unit. Therefore one or more electrical devices, which are built in the view finder unit or are detachably mounted on the view finder unit and require the synchronous signal related to the operation of the shutter device for having themselves activated, are electrically connected to the synchronous means through the contacting or coupling of the second terminal with the first terminal. A latch holds the view finder in position and aligns it with the camera body.
摘要:
In a photographic camera for use with a single-reel magazine wherein the film after withdrawn by a film advancing sprocket for exposure purposes has to be transported backwards to the magazine while the sprocket being idle, a mechanism for releasing the sprocket from braking engagement with a drive member therefor is provided with two control or rewinding buttons arranged to be manually actuable from the outside of the camera housing at respective places, one of which is located in a recess of the bottom panel thereof so that, for example, when a motor drive unit is attached thereto, an automatic responding relationship is established therebetween, and another place which is located so that, while the user is unabled to make use of the first-named rewinding button, as, for example, a tripod remains left in attachment with the camera at its bottom panel, it is made possible to switch the camera from the film winding to the rewinding state.
摘要:
An electrically operated extrinsic coordinating system for the light metering and exposure controlling circuits of a photographic camera, the camera also having incorporated therein an intrinsic coordinating system for those circuits, comprises first and second electronic switches connected in the respective power supply circuits for the light metering and exposure controlling circuits through respective interconnection channels to shunt the first and second switches of the intrinsic coordinating system, a delay circuit connected between the first and second electronic switches, and an operating switch arranged to be accessible from the outside of the camera and cooperative with the first electronic switch upon manual closure of the operating switch to actuate the light metering and exposure controlling circuits for the power supply in predetermined time-displaced relation to each other independently of the intrinsic coordinating system.