Abstract: An auto focusing device or a camera including such a device has a focus detecting circuit for detecting the defocus states of a plurality of objects. A calculation circuit calculates a lens position and an aperture value which are capable of placing at least two of the plurality of objects in focus on the basis of the detected defocus states. When a defocus amount difference between the two objects is outside of a predetermined range, the calculation circuit calculates a lens position capable of placing two other objects, the defocused amount difference between which is within the predetermined range, in focus.

Abstract: A motor driven camera which includes a first motor, a film rewind drive mechanism for driving film in a rewinding direction by the first motor serving as a drive source, a second motor, a film windup drive mechanism for driving the film in the winding up direction by the second motor serving as a drive source, the film windup drive mechanism includes a planetary clutch arranged upon rotation of the second motor in one direction to bring a windup transmission system into connection with the second motor, and upon rotation of the second motor in another direction to take the windup transmission system out of connection, and a motor control circuit, receptive of a signal representing start of a film rewinding, for driving the first motor in the rewinding direction and the second motor in the other direction.

Abstract: A connector for a camera having a camera body side mount and a rotatively mountable-dismountable type optical accessory side mount capable of being coupled and uncoupled by the rotation thereof relative to the camera body side mount and in which a plurality of camera body side connection terminals are formed on the peripheral area of the camera body side mount and a plurality of optical accessory side connection terminals adapted to contact the camera body side connection terminals during rotative coupling are formed on the peripheral area of the optical accessory side mount to thereby enable the communication therebetween includes at least one level difference provided at the height of the camera body side connection terminals in the direction of contact, and a level difference provided at the height of the optical accessory side connection terminals in the direction of contact.

Abstract: A camera system includes a camera body and an interchangeable lens. The camera body includes a camera-side mount, a groove which is disposed in rear of a mount abutting face of the camera-side mount in the direction of the optical axis and which is formed on an outer circumference of the camera-side mount, and a ring-shaped elastic member which is disposed in the groove. The interchangeable lens includes a lens-side mount which is mountable on the camera-side mount, and a tubular protruding part which is disposed in rear of a mount abutting face of the lens-side mount in the direction of the optical axis and which has an inner circumferential face arranged to come into pressure contact with the ring-shaped elastic member.

Abstract: A motor driven camera includes a mirror drive mechanism of swinging a movable mirror between a finder viewing position and an exposure retracted position, a shutter charge mechanism for performing charge driving and charge releasing of a shutter, a first film drive mechanism for driving film in a direction reverse to the feeding direction for each shot, a first motor serving as a drive source for driving the mirror drive mechanism, the shutter charge mechanism and the first film drive mechanism, and a clutch mechanism having output transmission systems being changed over in response to a change of the direction of rotation of an output of the first motor, one of the output transmission systems being connected to the mirror drive mechanism and the shutter charge mechanism, and another of the output transmission systems being connected to the first film drive mechanism.

Abstract: A motor driven camera having a mirror box in which a movable mirror supported to be pivotally movable between a finder-viewing position and an exposure retracted position is assembled, includes a mirror drive mechanism for driving the swing motion of the movable mirror, a shutter unit, a shutter charge mechanism for driving the charging of the shutter unit, and at least one motor constituting the drive source of the mirror drive mechanism and the shutter charge mechanism, wherein the mirror drive mechanism, the shutter unit, the shutter charge mechanism and the motor are assembled in the mirror box.

Abstract: A single-lens reflex camera having a motor-driven focusing device comprises a switch arranged to be controlled by an external operating member which is provided for turning off a power supply; and motor control means arranged to drive, in association with the switch, the motor-driven focusing device to shift its position to a given position where a photo-taking lens is at its minimum length. The camera, therefore, can be carried in a compact state for improved portability. The camera case also can be compactly arranged.

Abstract: A motor driven camera includes a charge mechanism for charging at least a shutter a first motor serving as a drive source for driving the charge mechanism, a film transportation mechanism for feeding film to make exposure of the next frame thereof, a second motor serving as a drive source for driving the film transportation mechanism, a first motor control circuit for driving the first and the second motors in parallelism to make ready to shoot the next frame after completion of exposure, operation detecting means for detecting an operating state of at least one of the first and the second motors, and a second motor control circuit for forcibly stopping one of the first and the second motors in response to output information produced by the operation detecting means representing that the operating state detected by the operation detecting means is not a predetermined state, the second motor control circuit driving again the forcibly stopped motor after completion of an operation of another motor.

Abstract: A lens drive device for a camera having the auto-focus function and the manual focus function, wherein the automatic and manual focusings are functionally coordinated in such a manner that the manual focus function is rendered operative only after the in-focus condition is automatically established, or when the in-focus condition is impossible to detect, depending on the states of the output of a focus detecting circuit.

Abstract: A motor operated camera is capable of using a single electric motor for different operations. A planet gear transmission change-over device is formed within a motor gear train by a sun gear, a planet gear and a plurality of transmission gear which are arranged to be selectively engaged with the planet gear. Blocking means for preventing the revolution of the planet gear at a point where at least one pair consisting of the planet gear and one of the transmission gears engage each other is arranged in combination with unblocking means arranged to undo a blocked state brought about by the blocking means.

Abstract: A motor driven camera having a film windup device for winding up film by an electric motor for windup as a drive source, comprises a first windup transmission system for rotating a spool by the motor for windup as the drive source, the first windup transmission system being driven through a first planetary clutch arranged to be driven by the rotation of the motor in one direction, a second windup transmission system for rotating a sprocket by the motor for windup as the drive source, the second windup transmission system being driven through a second planetary clutch arranged to be released from the connection by rotation of the motor in the other direction, and a holder for holding the second planetary clutch in the released state from that connection.

Abstract: A camera having a motor-driven diaphragm device comprises a diaphragm driving motor disposed within the camera; a diaphragm driving member which is driven by the motor to open or close the diaphragm aperture of a photo-taking lens; and a change-over switch to shift the rotating direction of the motor depending on the opening or closing of a switch which operates in association with a shutter release button. The diaphragm aperture is stopped down by the driving force of the motor when the release button is depressed and is opened to the fully open position thereof by reverse rotation of the motor when the release button is no longer depressed.

Abstract: A multi-motor driven camera in which the shutter-charging drive torque transmission is provided with a first electric motor, the film winding drive torque transmission with a second electric motor, and the film rewinding drive torque transmission with a third electric motor whereby a charging system of high efficiency can be formed.

Abstract: The disclosed device controls the speed of a camera's motor driven film feed. Upon detection of the initiation of a blank frame feed operation, the high speed frame mode is selected to automatically feed the film a predetermined number of frames and then automatically return to a preset frame speed mode. Upon detection of the initiation of a film load operation, the slow speed frame mode is selected.

Abstract: In an electric motor drive device for a camera having first and second one-way clutches arranged to transmit a driving force either to a film winding transmission member or to a film rewinding transmission member by a change-over operation on the rotation of a driving motor between normal and reverse rotating directions, a charge cam provided between the first one-way clutch which transmits a driving force of the rotation of the motor in the normal direction to the film winding transmission member and the winding transmission member is arranged to rotate together therewith. The charge of a charge mechanism disposed within the motor drive device resulting from the rotation of the charge cam is arranged to be effected approximately in phase with the charge of a charge mechanism which is disposed within the camera and is arranged to be driven by the winding transmission member.

Abstract: In the disclosed camera system, a spring arrangement to drive an automatic exposure mechanism of a camera and a magnet arrangement to control starting and stopping of the AE mechanism of the camera are provided within an electric drive device, and the automatic exposure control of the camera is carried out by mounting the electric drive device on the camera. Facilities, when energized by a power supply, are set to supply driving power to a motor for cocking the shutter, and an arrangement supplies power from the power source to the magnet arrangement for actuating the magnet arrangement. The present invention eliminates disadvantages of prior camera systems, namely, inferior response characteristic of the magnet and erroneous operations by the release action, and a large number of connecting terminals.

Abstract: An electric motor drive device for a camera has at least two sets of gear trains of different gear ratios for transmitting the driving force of a motor to the winding mechanism of a camera and a change-over mechanism for automatically selecting the most suitable gear train out of these gear trains depending on the condition of batteries attached to the electric motor drive device, so that the driving force of the motor can be transmitted to the winding mechanism through the gear train most suited to the condition of the motor.

Abstract: An electric motor drive device for a camera is arranged such that, in cases where power supply to a film winding motor is stopped with the camera still in an incomplete winding state and when the film comes to the end thereof after completion of a photographic operation on every frame, the power supply to the motor is resumed in response to a film rewinding completion signal produced from a film detection switch upon completion of film rewinding so that the camera can be brought into a winding completion state. This arrangement solves the problem of phase discrepancy arising between the camera body and the electric motor drive device when they are separated from each other.

Abstract: An auxiliary power source device to be connected in series to the power source of the motor driven device built in the camera or attachable on the camera so as to increase the winding speed of the camera, so designed that the auxiliary power source device is provided with the load current detecting means in such a manner that the current delivered from the auxiliary power source device to the camera reaches a certain determined value the output voltage of the auxiliary power source device is lowered by means of the output of the load current detecting means.

Abstract: A speed governor for a camera having a first speed governing means arranged to synchronously drive with an increased speed a driving member which drives a high speed operating member to a predetermined position and a second speed governing means arranged to brake the driving force of the driving member.