Abstract: A flat cathode-ray tube wherein a horizontally uniform sheet-like electron beam is vertically deflected and modulated with a video signal, with the modulated electron beam irradiating a portion of a phosphor screen, includes a modulation electrode assembly arranged by n electrode groups, each consisting of at least one first electrode group and at least one second electrode group, the first electrode group having vertically elongated stripe electrodes, each having one or n (n is an integer of 2 or more) openings or slits corresponding to each pel and which are aligned in the horizontal direction on at least one plane such that all openings are equidistantly formed, the second electrode group having the same construction as the first electrode group or being arranged such that vertically elongated stripe electrodes, each having n openings or slits corresponding to n pels along the horizontal direction are aligned on at least one plane to equidistantly form the openings along the horizontal direction, all the o

Abstract: In a flat type cathode ray tube having a small depth relative to an image screen size, electron beams which are generated by heating vertically extending linear thermal cathodes are sequentially and vertically switched by a plurality of vertical scanning electrodes extending vertically and arranged perpendicularly to the linear thermal cathodes, are transmitted through an electron beam generating electrode having apertures formed therein corresponding to the linear thermal cathodes. The electron beams are horizontally deflected by horizontal deflection electrodes, and then directed to a phosphor layer on an image area of a faceplate. The electron beams are modulated by applying a modulation pulse voltage together with a heating D.C. voltage to the linear thermal cathodes, or by applying a modulation pulse signal to a modulation electrode arranged close to the electron beam generating electrode.

Abstract: In an infrared image pickup device, an infrared image signal and a visible image signal are picked up from an object to be photographed, the infrared signal, the visible image signal and/or a visible profile image signal are transmitted in a time-division manner and are separated from each other, and an infrared image, a visible image, a visible profile image, an image obtained by superposing the visible image on the infrared image, and an image obtained by superposing the visible profile image on the infrared image are selectively displayed on different display monitors or a single display monitor in a synchronized manner or on said single display monitor in a separate manner.

Abstract: An electron gun assembly of a cathode ray tube comprises in the order named, a cathode, an apertured modulator electrode, a first and a second apertured anode and a third cylindrical focussing anode. The modulator electrode and the first anode are supplied with such potentials as to form a crossover of electrons therebetween and the second anode is supplied with such a lower positive potential than at the adjacent first and third anodes that the electron stream emitted from the cathode is formed into a narrow beam of electrons and is allowed to enter the third anode at a small angle of beam spread and comes to a focus on the screen of the tube by the third anode to produce a spot of small cross-sectional area.