Abstract: A photometric system is provided in which the value is obtained when the center-weighted photometric value and the like are determined from a plurality of separate photometric outputs is the same value that is obtained when photometry is accomplished on the same area when it is treated as a single cell. The photometric system includes a photometric element which divides the subject field into regions in order to measure the light quantity, a photometric mode selection unit which selects a photometric mode, a plurality of addition units which add together certain outputs from the outputs of the photometric element 11 in accordance with the selection made by a photometric mode selection switch, and a logarithm conversion unit which converts the output of the plurality of addition units into logarithms.

Abstract: An exposure calculation device for use in a camera is, provided with a light metering device for effecting light metering in each of plural areas divided in the object field and generating a light metering signal, containing information relating to the color of the object in each area. A first judgment device judges, whether the object in each area is colored or uncolored based on the light metering signal, and determines colored areas in which the object is colored and uncolored areas in which the object is uncolored. A second judgment device judges whether a predetermined uncolored area contains a white or black object, based on the light metering signals from the colored areas and those from the uncolored areas. An exposure value determining device determines the exposure value according to the light metering signals, based on the results of judgment by the first and second judgment devices.

Abstract: A zoom camera has at least a rear movable lens barrel movable on an optical axis forwards and rearwards. The rear movable barrel is moved from a collapsed position forwards. Front and rear lens groups are disposed in the rear movable barrel. A lens holder is supported inside the rear movable barrel in a movable manner on the optical axis forwards and rearwards, and supports the rear lens group. Three cam pins and three cam grooves move the lens holder relative to the rear movable barrel. An extension coil spring causes force of pulling the lens holder, biases the lens holder rearwards, and absorbs backlash between the three cam pins and three cam grooves. A combination of a spring plate and an inner wall of the body the extension coil spring when the rear movable barrel is in the collapsed position, to disable the pulling force from occurring. The extension coil spring is extended to enable the pulling force to occur when the rear movable barrel is in front of the collapsed position.

Abstract: A device has a photometry unit for performing a photometry operation of an object field using an accumulation type photometry element, and an accumulation time determination unit for determining the accumulation time of the photometry element. The accumulation time determination unit determines the value of the accumulation time for the next photometry operation by calculating a weighted average of the accumulation times in previous photometry operations. Since the value of the accumulation time for the next photometry operation is determined by calculating a weighted average of the accumulation times in previous photometry operations, the influence of flickering of an illumination light source can be eliminated, and a photometered value can be output within a short period of time.

Abstract: A solid state imager device such as a CCD imager device includes a timing generator which generates and supplies a clamping circuit with, a clamping pulse for clamping a first signal, corresponding to one pixel, from a through region of a CCD shift register, and a clamping pulse for clamping a second signal, corresponding to one pixel, from an optical black region of a sensor array. Specifically, the clamping pulse for clamping the first signal clamps a signal, corresponding to a first pixel, from the through region, and the clamping pulse for clamping the second signal clamps a signal, corresponding to a second or following pixel, from the optical black region. An output signal from the clamping circuit is supplied to an A/D converter which converts the supplied signal at such timing as not to sample the signal, corresponding to the first pixel, from the through region.

Abstract: A lifting mechanism is arranged between a cartridge main body and a reel support member. With the cartridge main body set in a parts mounter, the lifting mechanism allows the reel support member to be supported by the cartridge main body so that the reel support member can be pivoted upward at a predetermined pivoting angle (set position PA.fwdarw.bar code read position PB). While cartridges are kept placed in the parts mounter, a parts supply reel attached to a given cartridge is made to project from other reels. This enables a bar code reader to read the parts code of a label adhered on one side surface of that reel.

Abstract: Photometry apparatus and method accurately measure the degree of illumination of an object to be photographed during a long accumulated time. Influence of flicker is diminished when the accumulated time is short. The apparatus includes a photometry circuit which accomplishes photometry of the object field utilizing a photometry element of the accumulation type, an accumulated time establishment component establishes the updated accumulated time value of the photometry element on the basis of input accumulated time value and the output value of the photometry circuit, a weighted average component obtains the weighted average of the output of the accumulated time establishment component and the accumulated time value of the previous occasion, a weighted average determination component determines the weight of the weighed average component, and an accumulation control component controls the accumulation operation of the photometry element on the basis of the output of the weighted average component.

Abstract: An exposure calculation device for use in a camera, is provided with a light metering device for effecting light metering in each of plural areas divided in the object field and generating a light metering signal, containing information relating to the color of the object in each area. A first judgment device judges, whether the object in each area is colored or uncolored, based on the light metering signal and determining colored areas in which the object is colored and uncolored areas in which the object is uncolored; A second judgment device judges whether a predetermined uncolored area contains a white or black object, based on the light metering signals from the colored areas and those from the uncolored areas; An exposure value determining device determines the exposure value according to the light metering signals, based on the results of judgment by the first and second judgment devices.

Abstract: A charge transfer device includes a circuit which can correct a fluctuated amount of light (charge amount)--output voltage characteristic with accuracy even when fluctuated by the change of temperature and the fluctuation of a power supply voltage. An output voltage characteristic in the standard state corresponding to a reference charge is stored and held in a ROM in advance. An ALU (arithmetic logical unit) corrects the light (charge amount)--output voltage characteristic by using the output voltage characteristic in the standard state corresponding to the reference charge stored in the ROM and the output voltages corresponding to the reference charge inputs from reference charge input portions in an imaging state, and corrects an output voltage (Va) corresponding to a signal charge in a practical imaging state.

Abstract: A photometric device includes a photoelectric conversion section to photoelectrically convert the light from an object, output circuits that output information from the photoelectric conversion section, a logarithmic conversion section that logarithmically compresses the output from the output circuit, and a correction section that corrects the output from the output circuit. The correction section corrects the output from the output circuit after it is logarithmically compressed by the logarithmic conversion section. It is possible to obtain accurate photometric results using the photometric device. A simple computation method is used without burdening the microcomputer and memory.

Abstract: An accumulation-type light receiving element photoelectrically converts light from the subject field and outputs an electric signal on the basis of the brightness. An accumulation time setting component sets the accumulation time of the light receiving element and an accumulation operation component carries out accumulation in the light receiving element on the basis of the information from the accumulation time setting component. A photometric value input component inputs the photometry output from the light receiving element. A brightness value calculating component calculates the brightness value of the subject field on the basis of the outputs of the accumulation time setting component and the photometric value input component and further corrects the accumulation time of the light receiving element that has been input from the accumulation time setting component.

Abstract: A photometry device provides accurate photometry outputs over temperature by correcting light sensitivity variations of a light receiving element due to temperature variations. The photometry device includes the light receiving element, a light sensitivity detection device and a light sensitivity correction device. A correction formula is determined from the outputs of the light sensitivity corrections device generated at a standard condition and a condition other than the standard condition. The light sensitivity correction device corrects the outputs of the light receiving elements based on the correction formula.

Abstract: A thermal head has a plurality of heating elements disposed in line. These heating elements are grouped into sets of four heating elements. Each set records one pixel which is constituted by 4.times.8 cells disposed in a matrix shape. Each cell is selectively recorded with an ink micro dot. A blank section record an nth pixel, and immediately before each heating element faces the first main micro line of an (n+1)th pixel. In the course of this blank section, each time the thermal head moves by a predetermined distance, each heating element is driven by drive data which does not make the heating element turn on. In a preferred embodiment, if an nth pixel has a low density, each heating element is selectively driven to the extent that an ink micro dot is not recorded, so as to preheat the selected heating element in the course of the blank section.

Abstract: A camera having an auxiliary photographing function comprises photometering device for photometering an area to be photographed, exposure value calculation device for calculating an exposure value in accordance with the output of said photometering device, photographing mode selection device for selecting a photographing mode, and exposure value setting device for setting a final exposure value in accordance with the mode selected by said photographing mode selection device and the exposure value calculated by said exposure value calculation device.

Abstract: This invention relates to a camera photometry system which uses accumulation-type photoelectric elements to output photometry information related to the brightness of the subject field. Its purpose is to provide a camera photometry system which has a simple structure and which contains a two dimensional photometry mechanism with a wide dynamic photometry range. A camera photometry system using this invention is composed of a two dimensional photometry mechanism made of multiple accumulation-type photoelectric elements, and an accumulation control mechanism which controls the accumulation time of the photoelectric elements, with the system structured so that the multiple photoelectric elements are grouped in separate areas and the accumulation control mechanism is positioned at each of these areas and controls the accumulation time of the photoelectric elements in each separate area.

Abstract: A photometric control device for a camera, comprises an electric charge-accumulation type of photoelectric conversion device 7 having plural picture elements for photoreceiving and photoelectrically converting a flux of lights from plural regions of a subject field and outputting the respective photoelectric conversion outputs as photometric signals for exposure value calculation; an accumulation time calculating device 13 for calculating an accumulation time for a next operation of the photoelectric conversion device 7 using at least one of information on the maximum value of the photometric signals from the photoelectric conversion device 7 and information on the minimum value of the photometric signals from the photoelectric conversion device 7; and a control device 14 for actuating the photoelectric conversion device 7 for the calculated accumulation time.

Abstract: A photometric apparatus of a camera comprises a light receiving storage portion generating and accumulating electric charges proportional to intensities of incident rays from a plurality of photometric subareas into which a field is subdivided; a transfer portion transferring electric charges accumulated in the light receiving storage portion in correspondence to the photometric subarea; a voltage converting portion converting the electric charges received from the transfer portion into voltages; a storage gate portion controlling a start and an end of accumulation of electric charges by the light receiving storage portion; a luminance calculating portion calculating luminance values of the photometric subareas based on the voltages of the voltage converting portion; an exposure calculating portion calculating a proper exposure value based on the luminance values obtained by the luminance calculating portion; and a gate control portion controlling the start and the end of the electric charge accumulation by d

Abstract: A lifting mechanism is arranged between a cartridge main body and a reel support member. With the cartridge main body set in a parts mounter, the lifting mechanism allows the reel support member to be supported by the cartridge main body so that the reel support member can be pivoted upward at a predetermined pivoting angle (set position PA.fwdarw.bar code read position PB). While cartridges are kept placed in the parts mounter, a parts supply reel attached to a given cartridge is made to project from other reels. This enables a bar code reader to read the parts code of a label adhered on one side surface of that reel.

Abstract: A photometric control device for a camera comprises a light-receiving device 7 for conducting a photometry on a subject field with an accumulation type of photoelectric conversion device to output a photometric signal corresponding to brightness of the subject field, an accumulation time setting unit 13 for controlling an accumulation time of the photoelectric conversion device, a selection unit 14 for selecting any one of a first brightness value calculation mode for suppressing affection of flicker of a light source and a second brightness value calculation mode for taking no consideration of the affection of flicker on the basis of the accumulation time determined in the accumulation time setting unit 13, and a brightness value calculation unit 10 for calculating a brightness value on the basis of the photometric signal from the light-receiving device 7.

Abstract: The invention provides a camera photometry system that uses accumulation-type photometry elements to output photometric information related to the brightness of the subject field. The invention eliminates the smear phenomenon caused by the effects of the brightest parts of the subject field while also appropriately measuring the light of the major subject in the subject field. The invention is a camera photometry system equipped with a photometry mechanism which measures light using accumulation-type photoelectric elements by dividing the subject field into multiple photometry regions, and which outputs photometry information related to the brightness of the subject field, with the photometry element being equipped with a photoelectric mechanism for converting light into electricity which is stored and a transmission mechanism for transmitting the electric charge which is stored by the photoelectric mechanism.