Abstract: An angular velocity detecting apparatus comprises a ring laser including a tapered light waveguide of an asymmetrical shape in at least a portion of a light waveguide so that the oscillation threshold values of laser beams propagating round in opposite directions of rotation may differ from each other, an optical gyro having a terminal for detecting any change in at least one of an electric current, a voltage and impedance in the ring laser, a measuring device for measuring the information of the cycle of the change in at least one of the electric current, the voltage and the impedance outputted from the terminal of the gyro, a clock generation device for generating a predetermined clock for sampling, and a calculation circuit for inputting the result of the measurement by the measuring device at a predetermined sampling cycle, and calculating information regarding an angular velocity on the basis of the result of the measurement.

Abstract: An electronic image display apparatus includes an image sensor arranged to obtain an electronic image, an external memory arranged to store electronic image information related to identification information which identifies a photographic film loaded in the apparatus, a reproducing circuit arranged to reproduce the identification information recorded at a magnetic information recording part of the photographic film loaded, and a display device arranged to display, on the basis of the identification information stored in the external memory and reproduction information reproduced by the reproducing circuit, the electronic image information related to the identification information. The electronic image display apparatus is thus arranged to let the user know, without fail, what picture is taken on which of films by displaying an electronic image recorded on each film, even in a case where there are many exposed or partially exposed films.

Abstract: In a camera, an image correcting apparatus, an image correcting system, an image correcting method or a computer program product providing the image correcting method, an object image is recorded as a photo-taking image, and an object image obtained at a point of time different from a point of time at which the photo-taking image is obtained is recorded as a correction image to be used for correcting the photo-taking image.

Abstract: An angular velocity detector comprising a ring laser having a tapered light waveguide path which has an asymmetrical shape at least in a portion of the tapered light waveguide path so that laser beams propagating circumferentially in rotational directions reverse to each other have oscillation threshold values which are different from each other, an optical gyroscope having a terminal which detects a change of at least one of a current, a voltage and impedance of the ring laser, a measuring device for measuring information of a period or a frequency of the current, the voltage and the impedance outputted from the terminal of the above described optical gyroscope, a first output circuit for outputting information of the period or the frequency of at least one of the current, the voltage and the impedance outputted from the above described terminal when the above described optical gyroscope is not subjected to an angular velocity, and a calculation circuit for inputting a result measured by the above described

Abstract: An exposure control device for use in a camera includes a photosensor having at least two different types of spectral characteristics, a lightness calculating circuit that calculates lightness of each zone of the photosensor from the output of the zone of the photosensor, wherein the photosensor is partitioned into a plurality of zones, a saturation calculating circuit that calculates saturation of each zone of the photosensor from the output of the zone of the photosensor, a cloudy sky determining circuit that determines whether an area of the object field is a cloudy sky area, based on the lightness and saturation of each zone of the photosensor, and an exposure control circuit that performs exposure control based on the determination result of the cloudy sky determining circuit.

Abstract: A spatial light modulator includes a pair of transparent substrates disposed with a prescribed gap therebetween and each having thereon a transparent electrode, and a liquid crystal layer and a photoconductor layer disposed between the substrates, with the transparent electrode on one substrate being split into a plurality of split electrodes. A display apparatus is formed by disposing a recording medium carrying a recorded picture at different sizes between the spatial light modulator and a writing light source. Depending on the picture size to be displayed on the spatial light modulator, a number among the plurality of split electrodes are selected for writing voltage application under illumination with writing light based on picture size data recorded in the recording medium, whereby a selected size of picture is written in the spatial light modulator and displayed thereon under illumination with reading light.

Abstract: An exposure control device for use in a camera includes a photosensor having at least two different types of spectral characteristics, a lightness calculating circuit that calculates lightness of each zone of the photosensor from the output of the zone of the photosensor, wherein the photosensor is partitioned into a plurality of zones, a saturation calculating circuit that calculates saturation of each zone of the photosensor from the output of the zone of the photosensor, a cloudy sky determining circuit that determines whether an area of the object field is a cloudy sky area, based on the lightness and saturation of each zone of the photosensor, and an exposure control circuit that performs exposure control based on the determination result of the cloudy sky determining circuit.

Abstract: An image display apparatus having a storage display device which stores an image written by writing light representative of the image and displays the stored image, includes a density detecting device for detecting a density of the storage display device and a control device which brings image writing to an end when the density detected by the density detecting device reaches a predetermined density after the image writing to the storage display device is started.

Abstract: A camera having a magnetic recording circuit for recording information in a magnetic recording part of a film at each of photographing frames of the film is arranged such that, in an automatic exposure bracketing mode or an AE lock mode, information indicating that printing be performed under the same condition is recorded at each of the frames photographed in the above-stated mode.

Abstract: An angular velocity detector comprising a ring laser having a tapered light waveguide path which has an asymmetrical shape at least in a portion of the tapered light waveguide path so that laser beams propagating circumferentially in rotational directions reverse to each other have oscillation threshold values which are different from each other, an optical gyroscope having a terminal which detects a change of at least one of a current, a voltage and impedance of the ring laser, a measuring device for measuring information of a period or a frequency of the current, the voltage and the impedance outputted from the terminal of the above described optical gyroscope, a first output circuit for outputting information of the period or the frequency of at least one of the current, the voltage and the impedance outputted from the above described terminal when the above described optical gyroscope is not subjected to an angular velocity, and a calculation circuit for inputting a result measured by the above described

Abstract: An image display apparatus having a storage/display element for receiving writing light indicative of an image obtained from an original, storing the image and displaying the stored image, includes a light detecting mechanism for detecting light which has an influence on writing, and a determining circuit for determining an image storage operation condition for the storage/display element according to an amount of light detected by the light detecting mechanism.

Abstract: A camera includes an objective lens, a detection device for detecting defocus associated with each of at least three portions in a view field, a setting device for manually setting whether the each of at least three portions is used for focusing or not and a selecting device for automatically selecting a portion from among a plurality of the manually set portions to have been used for focusing, and for performing focusing for the selected portion by the objective lens.

Abstract: An apparatus, such as a camera, comprises a detection device which detects an index of a film cartridge, and a control device which performs predetermined control in accordance with the detection device detecting that the index of the film cartridge does not exist in indices of a recognized film cartridge for photography but is an admitted, predetermined index.

Abstract: A camera comprises a lens optical system including a zooming lens, a photographic mode setting circuit capable of selectively setting a plurality of kinds of photographic modes, exposure conditions being individually set for the respective photographic modes, a driving circuit for causing the zooming lens to move, a focus adjusting circuit for performing focus adjustment of the lens optical system, and a controlling circuit for controlling the driving circuit in accordance with a particular photographic mode set by the photographic mode setting circuit and forcedly moving the zooming lens to a position corresponding to a predetermined focal length, the controlling circuit moving the zooming lens before an operation of the focus adjusting circuit.

Abstract: A camera comprises a lens optical system including a zooming lens, a photographic mode setting circuit capable of selectively setting a plurality of kinds of photographic modes, exposure conditions being individually set for the respective photographic modes, a driving circuit for causing the zooming lens to move, a focus adjusting circuit for performing focus adjustment of the lens optical system, and a controlling circuit for controlling the driving circuit in accordance with a particular photographic mode set by the photographic mode setting circuit and forcedly moving the zooming lens to a position corresponding to a predetermined focal length, the controlling circuit moving the zooming lens before an operation of the focus adjusting circuit.

Abstract: A camera incorporating an auto-zoom function made operative when a photographer holds both a camera body and a lens barrel.

Abstract: This invention relates to a battery check circuit of a camera which mounts, e.g., an interchangeable lens. In this invention, the number of motors in the interchangeable lens is informed to the camera via a communication, and a battery check level according to the number of motors is automatically set, thereby performing a high-precision battery check operation.

Abstract: A camera incorporating an auto-zoom function made operative when a photographer holds both a camera body and a lens barrel.

Abstract: A camera includes a signal input circuit mounted in a back cover, a processing circuit receptive of signals from the signal input circuit for processing camera information, a control circuit operating with selection of exposure modes, and a circuit for changing over kinds of camera information to be input by the signal input circuit in accordance with the selected one of the modes.

Abstract: In a camera having an exposure setting device which corrects exposure control automatically set according to a DX code, the setting device is arranged to automatically change the value of the set exposure value to a predetermined different value and to set the different value as the exposure value when the automatically set exposure value is at a predetermined specific value.