Abstract: An apparatus is provided for preventing an image from being blurred as it is being recorded on the film of a camera. Angular velocity sensors are provided for detecting the angular velocity applied to the camera, and an actuator is provided for actuating a shutter of the camera to correct for the movement of the camera when the absolute value of the angular velocity detected by the angular velocity sensors is below a predetermined value.

Abstract: An apparatus for correcting a blurred image has a blurred image correcting lens which constitutes at least part of a photographing lens of a camera. The correcting lens is supported to move in a direction substantially perpendicular to an optical axis of the photographing lens. A driver for driving the correcting lens and an angular acceleration sensor which detects the angular acceleration applied to the camera, to send a drive signal to the driver, to cancel an undesirable movement of the optical axis of the photgraphing lens are provided. The angular acceleration sensor includes a rotatable sensor arm having a rotational shaft in the center of the length of the sensor arm, permanent magnets provided at the opposite ends of the sensor arm, a magnetic sensor which is opposed to one of the permanent magnets, and a coil which is opposed to the other permanent magnet and which has a winding intersecting the magnetic flux of the other permanent magnet.

Abstract: A stop control apparatus for an electronic camera capable of performing both still picture photographing and motion picture (video) photographing operations. A video exposure control circuit and a still exposure control circuit produce first and second operating signals during motion picture and still picture photographing operations, respectively. A selected one of the signals is applied to operate an electromagnetic diaphragm control mechanism composed of an electronic drive device mechanically coupled to operate the aperture blades of the camera. An aperture opening regulator determines the aperture opening amount in accordance with a selected aperture value, with the regulating means operating by producing a force which acts against the force produced by the electromagnetic drive device.

Abstract: An automatic focusing device for moving a photographic lens to an optimum focusing position by detecting an object image contrast signal that changes with the varying position of the photographic lens. The device stops the photographic lens while it is being moved between an infinite distance photographing position to a least distance photographing position when the level of the detected contrast signal becomes less than a threshold level. The invention compares a first signal, which is set to correspond to a position at which the photographic lens is to be stopped, and a second signal, which is generated when the contrast signal level is less than the preset threshold level.

Abstract: A zooming device for a camera, which comprises a rocker which operates a plurality of successively operable switches provided on each side of the center of rotation. The rocker can be turned in either direction to operate the first one of the plurality of switches so as to obtain zooming by a corresponding multiple lens group in the corresponding direction and at a predetermined speed. The zooming speed can be changed to a next speed when a second one of the switches is operated by further turning of the rocker.

Abstract: An exchangeable lens photographic camera of automatic focussing type capable of focussing objects between a minimum and an infinite focussing distance. The camera has an exchangeable lens exchangeable in the camera body. The lens has a first switch providing a signal associated with focussing an object at the infinite distance, and a second switch providing a signal associated with focussing an object at the minimum distance. A focussing motor is coupled to the lens for moving the lens for focussing objects lying between the minimum and infinite distances. A first pair of contacts coupled between the exchangeable lens and the camera body transmits therebetween signals indicating the presence and direction of rotation of the focussing motor. A second pair of contacts, coupled between the exchangeable lens and the camera body, transmits the signals produced by the first and second switches from the exchangeable lens to the camera body.

Abstract: An automatic exposure control circuit for a television camera which, irrespective of the illumination intensity of an object being photographed, provides a suitable exposure value at all times. The circuit includes a video signal extracting circuit for dividing a video signal for a field into a plurality of parts in a time division mode to selectively extract a specified picture region and a circuit for performing automatic exposure control in response to the selected video signal. The automatic exposure may be performed by a diaphragm control circuit including a rectifying circuit which operates upon the video signal corresponding to the extracted picture region and a circuit for maintaining the level of the video signal constant.

Abstract: An automatic focusing camera and interchangeable lens in which the camera body is provided with an automatic focusing control circuit, and an electric motor, also provided in the camera body and which operates in response to the output of the circuit, produces rotary motion which is transmitted to a lens through a mounting device for driving the lens to a point of correct focalization. For the smallest of three types of interchangeable lenses, the motor in the camera body is used directly to drive the lens. For a second larger type of interchangeable lens, a separate electric motor is provided with the lens itself. The separate motor is provided with control signals through contacts provided on the camera body and lens mount which are coupled to the control circuit in the camera body. In a third type of lens, the second electric motor and its battery are provided in an separate casing which is detachably mounted to the casing of the lens.

Abstract: A photographic camera of automatic focussing type capable of focussing objects between a minimum and infinite distance. A focussing motor is coupled to a movable objective lens for moving the lens for focussing an image of an object to be photographed. A photoelectric focussing detector has a photoconductive element responsive to light rays passing through the objective lens. The photoconductive element provides a maximum response when an image of the object formed on the photoconductive element is in the focussed condition. A first electrical circuit determines the direction of movement of the focussing motor for moving the objective lens to focus the object image. A responsive zone is defined within which the output of the detector varies in accordance with the position of the objective lens, and a non-responsive zone is defined away from the responsive zone and within which the output of the detector is invariant independent of the position of the objective lens.

Abstract: In a camera a moveable member moves under control of a motor towards a mechanical stop member provided to accurately position the moveable member. The moveable member may have an objective focusing lens riding thereon and the stop position may correspond to the position of focusing at infinity. The motor energization circuit is connected to the moveable member and the stop member. When the moveable member contacts the stop member the electrical current flowing therebetween operates a switching mechanism to cut off current to the motor.