Abstract: The present patent application discloses an imaging apparatus having actuating means for starting picking-up of an image, image blur detecting means for detecting the blurring state of the image resulting from the operation of the actuating means, and setting means responsive to the output of the image blur detecting means for setting a time which lasts until an image recording starts.

Abstract: This invention discloses a camera for recording information on a magnetic member provided on a film, in the course of feeding of the film. In such camera, this invention predicts the frame feeding speed, and controls the magnetic recording operation according to thus predicted feeding speed at the frame feeding of the film.

Abstract: A camera arranged to use a film having a magnetic storage part comprises a magnetic head which is arranged to demagnetize a signal pattern previously recorded in the magnetic storage part of the film; and a control circuit which causes the magnetic head to demagnetize the signal pattern previously recorded in the magnetic storage part with a predetermined demagnetization pattern of a frequency lower than the frequency of the signal pattern and to form information to be recorded in the magnetic storage part of the film in the shape of the demagnetization pattern.

Abstract: A camera includes an electronic zooming feature to selectively transform an image actually received at an image sensor into a displayed image at a photographing plane according to different angles of view corresponding to different zooming ratios. The image actually received is converted to binary data and stored in memory according to address coordinates. Electronic zooming is performed without affecting the optical system of the camera by reading stored data from memory to obtain an area defined by selected address coordinates and displaying an image corresponding to a desired focal length.

Abstract: A camera which includes a setting means for setting an indication information to indicate that a data should be printed on the back surface of the printed photograph and a recording means for recording the indication signal set by setting means, and a printing apparatus which includes a reading means for reading the indication information recorded by said recording means and a control means for printing the data onto the reverse surface of the printed photograph in response to the indication information read by said reading means.

Abstract: A photographic print control system includes a camera having the feature of indicating print size data and recording data relating to the print size so that a printer can read out the stored print size data and control a printing process for obtaining a print in the indicated size.

Abstract: A panorama photographing device such as a camera has a display device for displaying an image to be photographed such as a portion of an object, a memory device for storing data concerning an image which has been already photographed such as a previously photographed portion of the object, and a control device for enabling the display device to substantially simultaneously display both the image to be photographed and the image already photographed and stored as data in the memory device.

Abstract: A reverse printing system is disclosed. A camera has a setting means for setting a reverse print informations and a recording means for recording the reverse print information set by the setting means. A printer has a reading means for reading the reverse print information recorded by the recording means and a control means for printing a photographed image so that the photographed image is reversely printed in accordance with the reverse print information.

Abstract: At least one pair of electrodes (5a, 5b) are provided on the surface of a dielectric discharge tube (1), and radiating fins (2a, 2b) are attached to a part of the electrodes (5a, 5b). A ceramic clamp (3) and a stainless-steel backup plate (4) are engaged with recessed portions of the radiating fins (2a, 2b), to thereby fix the radiating fins (2a, 2b) in position. Accordingly, a rise in the temperature of the electrodes is reduced by radiating heat through the radiating fins, whereby a separation or deterioration of the electrodes (5a, 5b) is prevented.

Abstract: A high-frequency discharge pumping laser device is provided in which a high-frequency voltage is applied to a discharge tube to cause laser excitation. Light discharged from the discharge tube is measured by a photodiode to control an output of a laser power supply, to thereby stably control the discharging operation when the laser output is zero. The laser output has a close relationship with the discharging area inside the discharge tube, and therefore, the discharging area in which the discharging operation can be stably maintained with the output of zero is detected, to thereby stably control the discharging operation when the output is zero. Further, the length of the discharging area has an indirect relationship with the ambient temperature of the discharge tube, and the discharging operation effected when the laser output is zero is stably controlled in accordance with the ambient temperature of the discharge tube.

Abstract: A print control apparatus in a camera includes a camera provided with setting means for setting multiple printing information and recording means for recording the multiple printing information set by the setting means, or a printing apparatus provided with reading means for reading the multiple printing information recorded by the recording means and control means for effecting multiple printing in conformity with the multiple printing information read by the reading means.

Abstract: The present patent application discloses an image blue display device in which the image information in a first time is compared with the image information in a second time to detect a changed place, and this place is displayed as the image blur information.

Abstract: An inverter device is provided, which carries out a switching action in response to a drive signal (V.sub.GS1 -V.sub.GS4) having a single frequency. An inductance element (L) is connected in parallel with the output terminals of the device and capable of a parallel resonance with a total equivalent capacitance which is the sum of an equivalent electrostatic capacitance of the inverter device (Q1-Q4), as observed from the output terminals toward an input side, and an equivalent electrostatic capacitance of a load (LO). With this arrangement, the charge and discharge loss due to the source-drain capacitance (C.sub.OSS1 -C.sub.OSS4) is reduced, and the efficiency is improved.

Abstract: A matching means (2) is arranged in a power source portion (5) including an RF power source (1), an output impedance (Z.sub.0) of the RF power source (1) is matched by the matching means with a impedance (Z.sub.L) of a laser tube (4) connected through a power transmitting means (3). Therefore, the laser tube (4) arranged in a laser emitting portion (6) is effectually supplied with an RF power generated by the RF power source (1), and a stable laser beam can be emitted from the laser tube (4) with a high efficiency.

Abstract: A high-frequency discharge-exciting laser device has an optical resonator and a laser oscillator including a laser tube (5) in which a laser medium gas is circulated. The laser device includes a high-frequency inverter (2) and a matching circuit (3) which are directly coupled to an optical resonator (7) including the laser tube (5). The high-frequency inverter is supplied with DC electric power from a DC power supply (1). The high-frequency inverter (2) and the matching circuit (3) are disposed in the same location as that of the optical resonator (7), no coaxial cable is required, and it is not necessary to take impedance matching with any coaxial cable into consideration.

Abstract: A high-frequency discharge pumped laser device for producing a laser oscillation through application of a high-frequency voltage to a discharge tube, which includes a plurality of tube segments constituting the discharge tube, means for passing a laser gas axially through each of the tube segments, high-frequency power supplies for supplying a high-frequency voltage to the tube segments to generate a laser beam output, and a partition wall made of an electroconductive material and arranged between adjacent tube segments, the potential of the partition wall being maintained at a constant level. As the potential of the partition wall is maintained at a constant level, a mutual current caused by a stray capacity between the tube segments is eliminated, and thus fluctuation of the laser beam output is reduced.

Abstract: A high-frequency discharge pumping laser device is provided, applying a high-frequency voltage to a laser tube to produce laser oscillation. The high-frequency discharge pumping laser device comprises a high-frequency power supply for generating the high-frequency voltage, and a matching circuit for gaining impedance matching between the high-frequency power supply and the laser tube. The matching circuit has a reactance having an intermediate point connected to ground of a high-frequency circuit. This arrangement reduces variations or fluctuations of the laser output due to a mutual current and a mutual impedance between discharge tube segments.

Abstract: A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions (1a, 1b) through a dielectric to produce a high-frequency discharge for laser pumping. The laser oscillator device includes high-frequency power supplies (26a, 26b) for converting a DC power supply into high-frequency power supply outputs, output transformers (22a, 22b) for boosting the high-frequency power supply outputs and transmitting high-frequency electric power to the discharge regions, the output transformers having secondary windings with grounded midpoints, and current detectors (CT1a, CT1b) for detecting currents flowing through discharge tubes. Output currents of the high-frequency power supplies are controlled by feeding back the detected currents. Since the detected currents are not affected by mutual currents between electrodes, alarm conditions due to uncontrollable operation of a feedback loop and damage of parts are prevented from occurring, and stable current control is achieved.

Abstract: A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions through a dielectric for producing a high-frequency discharge for laser pumping. Various interferences in the laser oscillator device are prevented to allow the device to produce a stable output. The laser oscillator device includes DC power supplies (DC12a, DC13a, DC13c, DC13d) and high-frequency power supplies (RF12b, RF13b, RF14b, RF15b) which are integrally coupled to prevent electromagnetic interference through cables for allowing stable laser oscillation and also to prevent various other interferences.

Abstract: A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions through a dielectric for producing a high-frequency discharge for laser pumping. The laser oscillator device includes a DC power supply (16), and a high-frequency power supply (18, 19, 20, 21) for converting a DC voltage into a high-frequency voltage. The DC power supply (16) and the high-frequency power supply (18, 19, 20, 21) are coupled to each other by a filter (30). The filter (30) prevents a high-frequency component from being fed back from the high-frequency power supply (18, 19, 20, 21) to prevent the laser oscillator device from operating unstably due to parasitic oscillation. Other arrangements are disclosed for preventing interference between the high-frequency power supply and the DC power supply.