Abstract: A camera having a flash device incorporated therein is arranged to permit use of either the incorporated internal flash unit or a detachable external flash unit. The camera is provided with a change-over switch arrangement which is operated, when the detachable flash unit is mounted on the camera, to render the incorporated flash unit, inoperative and the detachable flash unit operative. When an object to be photographed is located at a distance too far for the flash light quantity obtainable from the incorporated flash unit, the detachable flash unit which is capable of emitting a greater flash light quantity than the incorporated flash unit is used.

Abstract: In an image sensing apparatus having an image sensor which converts an optical image of an object into an electrical signal, a view finder for monitoring the optical image equivalent to the image incident on the image sensor, an optical member arranged in the path of light incident on the image sensor to selectively guide the light to the image sensor and also to the view finder, an exposure member which is at least partially disposed in between the object and the optical member and is arranged to control an exposure and a light receiving element which is arranged separately from the image sensor, a control circuit is arranged to cause the light receiving element to form a first photometric information when the optical member guides the optical image to the view finder; to control the exposure member on the basis of the first photometric information while the optical image is led to the image sensor by the optical member; to cause, after that, the image sensor to form a second photometric information; and aga

Abstract: An image pickup apparatus for use in, for example, a camera, comprising: a solid-state image pickup device such as the CCD type or frame transfer type for converting an optical image to an electric signal; a readout unit for reading out the electric signal formed in the image pickup device at the speed corresponding to the scanning speed of the standard television system; and a readout controller for setting the readout speed in the vertical direction by the readout unit to be higher than the vertical scanning speed of the standard television system with respect to at least a partial interval in the vertical scanning interval. A quantity of image which is formed in the image pickup means is controlled by an iris or shutter or the like by use of the image signal which was read out by the readout controller at a high speed.

Abstract: An image pickup device in which electrical signals, representing an optical image from an image pickup element, are integrated during a first period and then the integrating operation is suspended for a prescribed time in which the output of the integrating circuit is read in a computer circuit. Thereby an otherwise necessary sample-and-hold circuit can be removed.

Abstract: An image pickup apparatus comprises: an image sensor for converting an optical image into distribution information of a minority carrier; a control circuit for periodically forming a first state in that a majority carrier is accumulated in the image sensor and a second state in that at least a part of the minority carrier is recombined with this majority carrier; a readout circuit for reading out the information in the image sensor; a recording apparatus for selectively recording the information for a predetermined interval from the information to be read out by the readout circuit with regard to the trigger operation for a still photograph; and a stopping circuit for stopping the control operation of the control circuit in association with the start of the recording by the recording apparatus or the closing of a shutter or in response to a low luminous condition or the like.

Abstract: An image sensing apparatus comprises a flash discharge tube; a trigger circuit which ionizes a gas within the flash discharge tube; a switch circuit which causes the flash discharge tube to flash; an image sensing device which converts an optical image into an electrical signal; a clearing circuit which clears the electric signal produced by the image sensing device at least during and/or right after the operation of the trigger circuit; a control circuit which causes the switch circuit to operate after completion of the operation of the clear circuit; a signal processing circuit for processing the output of the image sensing device; and a charging circuit which stops charging thereof in relation to the processing of the signal processing circuit on the output of the image sensing device corresponding to an image of an object illuminated by the flash discharge tube. The image sensing apparatus prevents the energy of the flash discharge tube from affecting the output of the image sensing device.

Abstract: An image sensing system having an image sensing part for sensing the image of an object to be photographed, two shutter blades which block image light, two motors arranged to drive the two shutter blades respectively and a control circuit arranged to keep a turning phase difference unvarying between the two motors.

Abstract: An exposure control apparatus including a diaphragm for controlling the exposure on a focal plane, a light metering element for measuring the light passing through an aperture of the diaphragm, a servo control circuit for controlling the size of the aperture in response to the output of the light metering element, and a signal forming circuit receptive of the output of the light metering element for producing an output signal to control the amount of light of a flash device.

Abstract: In the system disclosed, a focus lock drives an automatic focus adjusting arrangement and a signal output arrangement controls the light output of a flash unit on the basis of distance information obtained from the automatic focus arrangement. A selector permits a flash to have its light output controlled on the basis of measured light or distance information.

Abstract: An image sensing apparatus adapted for taking both motion pictures and still pictures includes a diaphragm which controls the quantity of light coming from an object to be photographed to a light receiving part; a first control circuit which variably controls the aperture value of the diaphragm while keeping the diaphragm in an open state; and a second control circuit which performs a control function to open and close the diaphragm.

Abstract: In the disclosed device, a sensor produces a corroborating signal when a computer flash unit emits a flash proper for an exposure. A timer energizes an indicator for a predetermined time in response to the corroborating signal. When the sensor produces a subsequent corroborating signal in response to another flash, while the indicator is energized, a reset device resets the timer. According to one embodiment of the invention, an overriding arrangement connected to the timer nullifies the operation of the timer a predetermined time after a flash emission.

Abstract: In a DC-DC converter for an electronic flash unit disclosed, an npn transistor is used as an oscillating transistor. The emitter of the npn transistor is connected to a main capacitor of the flash unit at least through a secondary winding of the converter. A diode is connected between the secondary winding and the main capacitor in such a manner that the emitter current of the npn transistor can flow into the main capacitor as an charging current through the secondary winding.

Abstract: In a camera having an electric motor and a flash device incorporated within the housing thereof, in order that simultaneous electrical power supply to the motor and the flash device from one and the same battery never occurs, there are provided a switch cooperative with a shutter button upon depression to inhibit electrical power supply to the flash device, and another switch arranged to be closed when each cycle of film winding operation is completed, thereby the motor is disconnected from the battery and the flash device is connected thereto.