Abstract: An image display apparatus includes a communication portion that communicates with a plurality of information processing apparatuses in a wired or wireless manner, a display portion, a control portion that controls to receive images to be displayed on screens of the information processing apparatuses for each of the information processing apparatuses in the communication portion and display each of the received images on the display portion concurrently, and an operation portion that receives a data transfer operation between the information processing apparatuses by an operation for each of the images displayed on the display portion.

Abstract: When a self-cleaning method for an aligner is carried out, a reflecting plate having a convex lens portion is set in an original plate holder, and exposure light rays are irradiated from a light source. The surface of the lens portion is coated with a reflective film. The light rays are reflected by the reflecting plate, diffused, and emitted onto the surface of a condenser lens, thereby breaking down and removing contaminants that are adhered to the surface of the condenser lens. The light rays also enter the interior of the condenser lens to clean away contaminants that are adhered to locations other than a normal exposure path. When a concave mirror and/or a reflecting plate having 50% transmittance is used as the reflecting plate, the emission range of the light rays (i.e., the locations that are cleaned) can be changed.

Abstract: When a self-cleaning method for an aligner is carried out, a reflecting plate having a convex lens portion is set in an original plate holder, and exposure light rays are irradiated from a light source. The surface of the lens portion is coated with a reflective film. The light rays are reflected by the reflecting plate, diffused, and emitted onto the surface of a condenser lens, thereby breaking down and removing contaminants that are adhered to the surface of the condenser lens. The light rays also enter the interior of the condenser lens to clean away contaminants that are adhered to locations other than a normal exposure path. When a concave mirror and/or a reflecting plate having 50% transmittance is used as the reflecting plate, the emission range of the light rays (i.e., the locations that are cleaned) can be changed.

Abstract: When a self-cleaning method for an aligner is carried out, a reflecting plate having a convex lens portion is set in an original plate holder, and exposure light rays are irradiated from a light source. The surface of the lens portion is coated with a reflective film. The light rays are reflected by the reflecting plate, diffused, and emitted onto the surface of a condenser lens, thereby breaking down and removing contaminants that are adhered to the surface of the condenser lens. The light rays also enter the interior of the condenser lens to clean away contaminants that are adhered to locations other than a normal exposure path. When a concave mirror and/or a reflecting plate having 50% transmittance is used as the reflecting plate, the emission range of the light rays (i.e., the locations that are cleaned) can be changed.

Abstract: To an original plate holder 16 to which an original pattern plate 15 is set in ordinary exposure, a transmittable plate 20 having a concave-shaped concave portion 22 formed at a middle of a quartz glass plate is set in self-cleaning and irradiated with ultraviolet light emitted from a light source 11. The ultraviolet light is diffused through the concave lens of the transmittable plate 20 and an entire surface of a projection lens 17 is irradiated with it. Accordingly, molecular bonds of a contaminant adhering to the surface of the projection lens 17 are cut off with strong energy of the ultraviolet light, so that the contaminant is decomposed, vaporized, and then removed.

Abstract: The heater has increased quick responsiveness to temperature control of air, and the air conditioner can realize highly accurate temperature control using the heater. A duct unit having heat sources comprising electric lamps in the inside thereof is attached to an air duct. Air coming into contact with glass bulbs of the electric lamps is heated by radiant heat and transferred heat generated by lighting the electric lamps, whereby the heater with increased quick responsiveness to temperature control is obtained. A first heater and a second heater are provided in the air duct, respectively, and temperature sensors for controlling these heaters are attached to the air duct and a precision environment chamber, respectively, whereby temperature control in two stages with different temperature resolutions is made possible, and an air conditioner with high accuracy excellent in controllability can be provided.

Abstract: To an original plate holder 16 to which an original pattern plate 15 is set in ordinary exposure, a transmittable plate 20 having a concave-shaped concave portion 22 formed at a middle of a quartz glass plate is set in self-cleaning and irradiated with ultraviolet light emitted from a light source 11. The ultraviolet light is diffused through the concave lens of the transmittable plate 20 and an entire surface of a projection lens 17 is irradiated with it. Accordingly, molecular bonds of a contaminant adhering to the surface of the projection lens 17 are cut off with strong energy of the ultraviolet light, so that the contaminant is decomposed, vaporized, and then removed.

Abstract: In a halftone phase shifting photomask 108, having a pattern of halftone phase shifting film 102 containing at least chromium and fluorine, the halftone phase shifting film is heat-treated at a temperature between 250° C. and 500° C. so that a change of the optical property of the film produced by the application of excimer laser for exposure to the film is decreased.

Abstract: The heater has increased quick responsiveness to temperature control of air, and the air conditioner can realize highly accurate temperature control using the heater. A duct unit having heat sources comprising electric lamps in the inside thereof is attached to an air duct. Air coming into contact with glass bulbs of the electric lamps is heated by radiant heat and transferred heat generated by lighting the electric lamps, whereby the heater with increased quick responsiveness to temperature control is obtained. A first heater and a second heater are provided in the air duct, respectively, and temperature sensors for controlling these heaters are attached to the air duct and a precision environment chamber, respectively, whereby temperature control in two stages with different temperature resolutions is made possible, and an air conditioner with high accuracy excellent in controllability can be provided.

Abstract: The invention relates to a halftone phase shift photomask whose transmittance and phase angle remain unchanged even when irradiated with an excimer laser used for exposure over an extended period of time, and a blank therefor, and provides a halftone phase shift mask 108 comprising a pattern of halftone phase shift film 102 containing at least chromium and fluorine on a transparent substrate 101, wherein optical characteristic changes upon irradiation with an exposure excimer laser have been reduced by patterning a film irradiated with light 109 having a wavelength substantially absorbed by halftone phase shift film 102.

Abstract: In a halftone phase shifting photomask 108, having a pattern of halftone phase shifting film 102 containing at least chromium and fluorine, the halftone phase shifting film is heat-treated at a temperature between 250° C. and 500° C.

Abstract: An electric field cancellation apparatus that can reduce electric field radiation from a cathode ray tube inexpensively includes a canceling pulse generating circuit generating a pulse voltage that cancels a leaked electric field radiated from a high voltage generating circuit employed with a deflection circuit or the like. The canceling pulse voltage is superimposed upon an output voltage of the high voltage generating circuit and is applied through an anode to an aperture grill of the cathode ray tube, whereby an electric field having a phase opposite to that of the leaked electric field is radiated from the whole surface of the aperture grill, so that the leaked electric field radiated from the cathode ray tube can be canceled.

Abstract: A television receiver having a video signal receiving circuit for receiving a video signal, a vertical synchronizing signal and a horizontal synchronizing signal, a signal processing circuit for supplying the video signal to a cathode ray tube, a vertical deflection circuit for supplying a vertical deflection signal to the cathode ray tube in response to the vertical synchronizing signal, a horizontal deflection circuit for supplying a horizontal deflection signal to the cathode ray tube in response to the horizontal synchronizing signal, a frequency detector circuit connected to the video signal receiving circuit for detecting the frequency of the horizontal synchronizing signal and deriving a control signal in response thereto and a control circuit connected between the frequency detector circuit and the horizontal deflection circuit for controlling the latter in response to the control signal from the former.

Abstract: A fly-back transformer in which its low and high voltage windings are molded integral by resin material is disclosed. In this case, a winding receiving frame having an attaching means is integrally fixed to the peripheral edge portion on the terminal side surface of the molded body.

Abstract: A coil bobbin for a fly-back transformer or the like having a bobbin proper. A plurality of partition members or flanges are formed on the bobbin proper with a slot between adjacent ones. At least first and second coil units are formed in the bobbin proper, each having several slots, formed between the flanges, and first and second high voltage coils are wound on the first and second coil units in opposite directions, respectively. A rectifying means is connected in series to the first and second coil units, and a cut-off portion or recess is provided on each of the partition members. In this case, a wire lead of the coil units passes from one slot to an adjacent slot through the cut-off portion which is formed as a delta groove, and one side of the delta groove is corresponded to the tangent direction to the winding direction.

Abstract: A high voltage transformer for use in a television receiver or the like having a magnetic core, a primary winding, a secondary winding and a voltage rectifier. The secondary winding is wound on a coil bobbin and a holder is attached to the coil bobbin for holding a high voltage lead at its one end portion. The high voltage lead supplies a high DC voltage from the secondary winding to a cathode ray tube of the television receiver. The holder has an elongated cylindrical portion by which the high voltage lead is resiliently supported.

Abstract: A high voltage generating circuit for a television receiver which includes a horizontal oscillator and a switching circuit operating at the horizontal sweep frequency of the television receiver and being coupled to a flyback transformer which has an input resonant frequency in the vicinity of but higher than the horizontal oscillator frequency. The output of the flyback transformer is coupled to a rectifier circuit which in turn is coupled to the high voltage anode of the television receiver. The flyback transformer also has an input resonant circuit which includes a capacitor which is serially connected to the primary winding of the flyback transformer. This series resonant circuit is resonant at a frequency in the vicinity but less than the frequency of the horizontal oscillator with the result that improved voltage regulation is obtained while avoiding excess high voltage which otherwise would be caused by a shift in the output frequency of the horizontal oscillator.

Abstract: A horizontal deflection circuit arrangement in which a saturable reactor operating as a variable impedance element is provided in the path of a horizontal deflection current flowing through a horizontal deflection coil for stabilizing the horizontal deflection current against fluctuations of the frequency of a horizontal drive signal for a horizontal output switching device, thereby to keep a suitable horizontal size of a raster made by the beam scan caused by the deflection current. The saturable reactor is supplied with a control signal varying in response to variations in the frequency of the horizontal drive signal to control the impedance thereof so as to compensate for the variations of the horizontal deflection current.