Abstract: A camera system on which a remote control device enables photographing with a camera body directed to a user of the remote control device, is controlled by a program of a microcomputer for controlling provided in the camera body. In this program, while the lens direction of the camera body is being shifted by the remote control device, a release signal sent from the remote control device is disregarded. As a result, even if the user pushes a release button by mistake to transmit a release signal, the microcomputer does not accept a remote control release signal while the lens is moving by a remote control drive signal, thereby preventing exposure.

Abstract: A camera which includes a film cartridge whose spool is adapted to be set in different rotational positions with respect to a film cartridge main body between unused state and used state of the film cartridge, and a camera body having a film cartridge accommodating portion, and is arranged to show that the film cartridge is in the used state when the used film cartridge is inserted in the accommodating portion of the camera body.

Abstract: A film feeding apparatus of a camera using a film having two perforations in each frame. A perforation detecting lever has claws spaced at a predetermined distance apart from each other so that the distance therebetween is equal to the distance between the two perforations which are adjacent to each other across the boundary between frames. The perforation detecting lever engages the perforations and disengages therefrom in unison with an operation for feeding one frame to be performed after the proceeding frame is exposed to light. As a result, film feeding is allowed to proceed until both claws simultaneously engage two respective perforations in the film which occurs after the film has advanced one frame.

Abstract: A camera using a film having a magnetic surface for recording magnetic data thereon. The camera includes a magnetic head for writing magnetic data onto the magnetic surface and for reading magnetic data recorded thereon. A pad movable with respect to the magnetic head is opposed to the magnetic head. The film is sandwiched between the pad and the magnetic head when magnetic data is written onto the magnetic surface of the film and the magnetic data recorded thereon is read. The pad is driven by a motor for driving a film feeding mechanism so that the pad moves away from the film feeding path when data writing and data reading is not carried out. A planetary gear mechanism connects the motor selectively to a pad driving mechanism and a film feeding mechanism.

Abstract: A camera which includes a film cartridge whose spool is adapted to be set in different rotational positions with respect to a film cartridge main body between unused state and used state of the film cartridge, and a camera body having a film cartridge accommodating portion, and is arranged to show that the film cartridge is in the used state when the used film cartridge is inserted in the accommodating portion of the camera body.

Abstract: A structure of a cartridge chamber and cover of a camera which uses a film cartridge. The cartridge chamber has a depth such that a predetermined end portion of a film cartridge is exposed along an axis of a spool in the cartridge when the film cartridge is accommodated in the cartridge chamber. Also provided is cover having a configuration for covering the end portion of the film cartridge accommodated in the cartridge chamber when the cover is closed. Thus, the end portion of the film cartridge is exposed when the cover is opened. Also, the cover is locked to restrain the cover from being opened when the cartridge chamber opening is downward and to enable the cover to be opened when the cartridge cover opening is upward. With this construction, the user can open the cover only when the opening of the cartridge is pointed upward in order to prevent the cartridge from dropping from the cartridge chamber inadvertently.

Abstract: A camera according to the present invention is a camera which feeds a film from a film feed opening of a patrone chamber and it includes a film feeder for feeding the film drawn from the film feed opening to a spool chamber through a film exposure portion, a detector for detecting whether or not the fed film passes through the film exposure portion, and a controller for controlling operation of the film feeder in response to an output of the detector.

Abstract: A camera operated by a remote control device includes a zoom lens. The camera has a plurality of photographing modes. In a first mode, an object is photographed at a predetermined magnification and in a second mode, the object is photographed together with the background thereof. A desired photographing can be taken in response to a signal from the remote control device.Furthermore, the camera can rotate to upward, downward, rightward and leftward by a signal from the remote control device.

Abstract: A film cartridge includes a rewinding shaft for rewinding a film, a case having a film exit/entrance and accommodating the film rewound by the shaft therearound in a light-intercepted condition, and a locking mechanism for locking the leading portion of the film in the film exit/entrance in the vicinity thereof, so that the film does not get out of the cartridge more than a predetermined amount or get out of the exit/entrance carelessly. The shaft or a film feeding-out member in the cartridge is set in a predetermined position, so that the shaft or the member is immediately and smoothly connected with a corresponding member of a camera for accommodating the cartridge. A camera accommodates the cartridge to take the advantage.

Abstract: A photographic camera which comprises an electronic flash unit for firing a flash light for illuminating a target object to be photographed when an image of the target object is desired to be exposed on a light senistive film, a preliminarily flash unit activated prior to the flash light fired by the electronic flash unit to emit a preliminary flash light necessary to cause the pupils of the target object to close, a manipulating unit for selecting a mode in which the preliminarily flash unit is activated, a determining circuit for determining the necessity of the preliminary flash light under a predetermined condition; and a display device for providing, on the basis of a result of determination made by the determining circuit, an indication that the preliminary flash light is necessary.

Abstract: A camera system includes a remote controller and a body of a camera. The remote controller is incorporated in a lens cap of the camera. A photographing magnification for an object is set by the remote controller. A taking lens of the camera is automatically driven to attain an in-focus position defined by a distance to the object and the magnification set by the remote controller. Thus, an image of a desired magnification can be photographed by remote control using the remote controller.

Abstract: A still camera for recording a still image by making use of an electronic signal has a taking lens system incorporated in a camera body in such a manner that one end portion thereof is directed to an object to be photographed for making an image of the object to obtain the electronic signal; a light emitting portion of an electronic flash device incorporated in the camera body in such a manner that one end portion thereof is directed to the object for emitting a flash light toward the object; and a recording medium containing portion arranged between the light emitting portion and taking lens system.

Abstract: A dc motor wherein a driving force thereof can be used effectively with a simple and compact mechanical construction and a motor controlling system which can control such a dc motor to be driven efficiently. The motor comprises at least two coils, and change-over means for changing electric connection of the coils to change over the motor, when power is selectively supplied to the coils, between a first mode in which the torque produced is relatively high and the rotational frequency is relatively low and a second mode in which the torque is relatively low and the rotational frequency is relatively high. The motor controlling system includes selecting means for automatically selecting one of the first and second modes to control the change-over means is response to a given condition of the motor.

Abstract: A camera having a remote controller. The automatic focusing mechanism of the camera measures a distance from the camera to a main object positioned within approximately the center region of a focus area and automatically obtains a in-focus condition in correspondence with the measured object distance. The camera includes a memory for storing a maximum object distance at which in-focus conditions are obtained by the automatic focusing mechanism in a remote control photographing mode. When the main object is photographed in the remote control photographing mode, a comparing device compares an object distance measured by the automatic focusing mechanism and the maximum object distance set in the memory with each other. If the measured object distance is less than the maximum object distance, an optical system is adjusted to a normal photographing mode.

Abstract: A still camera for recording an object image by making use of an electronic signal such as a still video camera is so constructed that a recording medium is positioned nearly in parallel with an optical axis of a taking lens system and also in the lateral direction to the taking lens system. Therefore, the camera body thereof can be formed in a flat shape, and additionally a red-eye phenomenon can be prevented from occurring by arranging a light emitting portion of an electronic flash device and the taking lens system sufficiently apart from each other.

Abstract: An optical density detector which comprises a first light source for emitting a first light which belongs to a wavelength region in which the first light is hardly absorbed by a specific material contained in a sample, a second light source for emitting a second light which belongs to a wavelength region in which the second light is absorbed, substantially as compared with the first light, by the specific material, wherein a peak-wavelength of the second light is shifted by change of a temperature and change of an absorption of the specific material caused by the peak-wavelength shift is characteristic of a linear equation with a gentle grade, light receiving device for measuring a quantity of the first and the second lights which are transmitted through the sample, an arithmetic unit for calculating difference of absorbance between the first light and the second light of which both change depending on the density of the specific material, a temperature measuring device for measuring the temperature of the fi

Abstract: A camera has an exposure control unit and a focus control unit. The exposure control unit selectively provides a programmed exposure control mode, where an aperture value and a shutter speed value are automatically set based on a detection by a light metering sensor and an accordance with a preset program, and a manual exposure control mode where at least either of the aperture value and the shutter speed value is set manually. The focus control unit selectively provides an autofocus mode where a focusing is automatically effected based on a detection by a focus sensor and a manual focus mode where the focusing is effected manually. The invention is characterized by a feature which permits a forcible switchover of the focus control mode from the manual to the auto focus mode in response to a switchover of exposure control mode from the manual to the auto exposure mode.

Abstract: A photographic camera of the type including a piezo-electric actuating element driven by energy accumulated in a capacitor for actuating a shutter wherein the piezo-electric element operates in stability to assure accurate appropriate opening and closing operation of the shutter of the camera and the capacitor is charged up rapidly to allow subsequent photographing operation to be done in a minute. In the camera, a charged voltage of the capacitor is checked several times to determine if it is sufficient to assure proper operation of the piezoelectric element, and if a then required level is not reached, then the capacitor is charged to the required voltage. While the capacitor is being charged, charging of a capacitor for a flash is inhibited.

Abstract: A photographic camera of the type including a piezo-electric actuating element driven by energy accumulated in a capacitor for actuating a shutter wherein the piezo-electric element operates in stability to assure accurate appropriate opening and closing operation of the shutter of the camera and the capacitor is charged up rapidly to allow subsequent photographing operation to be done in a minute. In the camera, a charged voltage of the capacitor is checked several times to determine if it is sufficient to assure proper operation of the piezo-electric element, and if a then required level is not reached, then the capacitor is charged to the required voltage. While the capacitor is being charged, charging of a capacitor for a flash is inhibited.

Abstract: A photographic camera of the type including a piezo-electric actuating element driven by energy accumulated in a capacitor for actuating a shutter wherein the piezo-electric element operates in stability to assure accurate appropriate opening and closing operation of the shutter of the camera and the capacitor is charged up rapidly to allow subsequent photographing operation to be done in a minute. In the camera, a charged voltage of the capacitor is checked several times to determine if it is sufficient to assure proper operation of the piezo-electric element, and if a then required level is not reached, then the capacitor is charged to the required voltage. While the capacitor is being charged, charging of a capacitor for a flash is inhibited.