Abstract: A distance measuring device is disclosed. This device has light projecting means. Light is projected from this projecting means to a target, and the concurrently reflected light from the target is received by photoelectric light receiving means which is provided with a plurality of photosensitive elements independent of each other and arranged in such predetermined distances from the above described light projecting means as to correspond to individual object distances different from each other. From the concurrent state of output of said photoelectric light receiving means there can be detected a distance to the above described target.

Abstract: In the disclosed camera, when the object of principal photographic interest becomes so dim as to prevent satisfactory operation of the focus detecting device, or when the actual voltage of a battery falls below a satisfactory operating level for the device, a supplementary device can be rendered operative to control setting of a photo-taking lens independently of the focus detecting device. The camera can then be focused at an appropriate distance depending upon the size of diaphragm aperture, namely, in a pan-focus position.According to an embodiment of the invention, an exposure control apparatus in the camera is made associated with the aforesaid two devices to operate in response to the taking lens having been set. The supplementary system is disabled until needed.

Abstract: A camera having an automatic focus adjusting device with an arrangement that permits manual focus adjustment by moving a focus adjusting member to a desired position by means of an operation member when automatic focusing is impossible. The camera includes an automatic focus detecting circuit including a photoelectric light sensor, a photographic lens and a focus adjusting member for holding the photographic lens. The member is movable within a certain determined range for focusing by means of a spring. A latch device for latching the focus adjusting member in a focus adjustment start position is included. The latch device is arranged to release the focus adjusting member from the state of being latched to cause the focus adjusting member to start automatic focusing in response to a shutter release operation. A stop is arranged for stopping the focus adjusting member at the in-focus position in response to the output of the automatic focus detecting circuit.

Abstract: A camera comprises an exposure meter having a pointer deflected to a position dependent upon the brightness level of an object to be photographed, a scanning mechanism actuated by a camera release to scan the position of the deflected pointer with the scanning result being introduced to a lens aperture mechanism, an automatic focus adjusting device actuated by the camera release to control the focusing of an objective lens in accordance with a photoelectrically sensed distance from the camera to the object, and a control mechanism. Since the photoelectric elements in measuring the object distance have a relatively long time lag, the control mechanism functions upon actuation of the camera release to defer the actuation of the scanning mechanism and the autofocusing device, pending completion of the detection of the object distance. In this manner, an exposure setting accurately corresponding to the prevailing lighting conditions is obtained.

Abstract: A data printing device for use in a photographic camera includes an electronic clock for providing time and date data to be printed in digital form on the associated film in the camera. In one embodiment, the data are grouped into two parts which are printed in time-displaced relation to each other on a common picture frame, while the data are prevented from changing during the printing operation, as time passes on. The display of data is effected only when printing is performed, or when required or desired values of time and/or date are set in the electronic clock, thereby the consumption of electrical energy of a common battery of the exposure control apparatus in the camera is minimized.

Abstract: A camera is provided that has an automatic focus detector and a manually operable focus adjustment device, in which the focus adjustment device can be set at a predetermined position or range falling outside of an ordinary focus adjusting range. At the same time a coordinating device is provided which functions to secure an appropriate depth of field (or a hyper focal range) by coordinating the focus adjustment and the exposure aperture adjustment when the focus adjustment device is set at the predetermined position or range. Thus even in a case when the focus detector can not function effectively, practically satisfactory photographing can be done by the action of the coordinating device.In a preferred example of the present invention the focusing condition of a photo-taking lens system is automatically adjusted according to an exposure aperture value (i.e. f-stop value) by the action of the coordinating device in a condition in which the focus adjustment device is set at the predetermined position.

Abstract: A range finding device of a construction, in which, at the time of receiving first and second images of an object to be formed by a range finding optical system with a relative positional parallax corresponding to the object distance into first and second photoelectric light receiving elements, respectively, these images are shifted on the light receiving surfaces of the respective first and second light receiving elements by a vibrating optical device at a same cycle and same phase to thereby scan these first and second images by the first and second light receiving elements; image scanning signals on the first and second images to be obtained at this time are converted into digital values; thereafter, these values are stored in the first and second storing devices where the coincidence and non-coincidence of these digitalized image scanning signals are detected by means of a coincidence detecting device, while one of these image scanning signals are relatively shifted bit by bit with respect to other image

Abstract: A focusing system in a camera having an automatic focus detector to detect a focusing condition of a photo-taking optical system, an electromagnetic driving motor which is actuated in one direction, being controlled by the detector and having its operation stopped when an in focus state is detected by the detector, a movable member which can restrict the operation of said driving motor and at the same time is shiftable in response to the shifting of the photo-taking optical system, and an indicator which indicates the in focus position and is driven by said driving motor. The photo-taking optical system is shifted from a prescribed position in a predetermined direction for adjusting the focus. The movable member is correspondingly shifted from a prescribed position in a predetermined direction to release the restriction over the driving motor and to line up with the position of the indicator manually setting the optical system to the in focus position indicated by the indicator.