Abstract: A hybrid full color TFEL display device includes a pair of independently addressable matrix arrays on stacked substrates wherein the front substrate includes patterned phosphors arranged as alternating stripes, and the rear substrate includes a single phosphor layer. The rear phosphor layer may be either a red or blue emitter and the front phosphor stripes are either red-green or blue-green. The space between the stacked substrates may be filled with a dyed filler material to improve the chromaticity of the rear substrate phosphor. To achieve a full color spectrum the fill factors of the various phosphors are adjusted to be inversely proportional to respective luminance of each at the driving frequency of the panels.

Abstract: A discharge tube for a high pressure metal vapor discharge lamp is disclosed, which comprises a translucent alumina tubular body, first and second end plates of cermet having a firing shrinkage factor which is less than that of the translucent alumina tubular body, end first and second electrode support members partially embedded in inner sides of the first and second end plates, respectively. The first end plate is fitted to the first end portion of the alumina tubular body and bonded thereto through shrinkage fitting at a shrinkage fitting ratio of the tubular body to the first end plate being from 3 to 6% during a simultaneous sintering of the first end plate to the tubular body and a simultaneous bonding of the first electrode support member to the first end plate through shrinkage fitting at a shrinkage fitting ratio of the first end plate to the first electrode support member being from 4 to 16% when the alumina tubular body is fired to be translucent.

Abstract: An electrode assembly for an electrostatic lens of the in-line type electron gun for a color cathode ray tube, includes a pair of tubular electrodes arranged in axially opposing relation. Each of the tubular electrodes includes a main tubular electrode member closed at its one end by an end wall which has an aperture of the configuration obtained by partially overlapping a plurality of circular openings arranged in an in-line manner. An auxiliary electrode member is fitted into the main electrode member. The auxiliary electrode member has an end wall positioned separately from the end wall of the main electrode member by a predetermined distance. The end wall of the auxiliary electrode member is formed with a plurality of independent collars projecting therethrough in parallel to the axial direction of the respective circular openings of the overlapped-multicircle aperture and to superpose the corresponding circular openings of the overlapped-multicircle aperture in an axial direction.

Abstract: A spark plug for internal combustion engines comprises a center electrode enclosed in an insulating body enclosed in a metal housing, and a ground electrode. The insulating body has an end portion which faces the combustion chamber. An electrical field develops, resulting in a surface spark gap between two electrodes on the surface of the insulating body at the end portion thereof. The insulating body is transversely divided into the upper portion and the lower portion, of which the lower portion facing the combustion chamber is made of a material having dielectric constant 5-50 times higher than that of the upper portion.

Abstract: In electron guns for electronic tubes, such as travelling wave tubes, for power modulating the electron beam, the distance between the cathode and the modulation grid increases the closer to the axis of the tube. Such a gun can be applied to travelling wave tubes operating with a zero enabling voltage and whose modulating frequency covers a very wide band.

Abstract: An improved aperture fluorescent reprographic lamp is disclosed. The lamp of the present invention includes an elongated envelope containing an ionizable medium including mercury and having electrodes at each end of the envelope: a reflector layer on a major portion of the inner surface of the envelope, a phosphor layer disposed on and coextensive with the reflector layer, and a protective coating over at least the portion of the inner surface of the lamp envelope not covered with the reflector layer. The phosphor layer comprises particles of green-emitting zinc orthosilicate phosphor which are individually coated with a non-particulate, conformal aluminum oxide coating.

Abstract: A hollow cathode discharge device loosely supported by a cathode lead-in 26 in a glass sleeve 32, the device including a ceramic shield 42 received in the rim 38 of the glass sleeve in freely slidable relation thereto, and maintained in position by holding means such as a mica disc 48 supported from the anode structure including an anode lead-in 30.

Abstract: A transparent panel for a display device of cathode-ray tube type comprising, an electromagnetic shielding web defined by the wires made of an electromagnetic shielding material, and the transparent panel members sustaining said electromagnetic shielding web to shield the radiated electromagnetic waves so as to protect the observer from the effects of the waves.

Abstract: A high-pressure sodium vapor discharge lamp having a ceramic discharge vessel, which has over a length L a substantially constant inner diameter and in which electrodes are arranged opposite to each other at a relative distance D. The lamp emits white light during operation and consumes a power of at most 50 watts. The lamp has a high efficiency and good color rendering due to the fact that D/L.ltoreq.0.5.

Abstract: There is disclosed a multiple gaseous discharge display/memory panel having an electrical memory and capable of producing a visual display, the panel being characterized by an ionizable gaseous medium in a gas chamber formed by a pair of opposed dielectric material charge storage members which are respectively backed by a series of parallel-like conductor (electrode) members, the conductor members behind each dielectric material member being transversely oriented with respect to the conductor member behind the opposing dielectric material member so as to define a plurality of discrete discharge volumes constituting a discharge unit, the surface of the dielectric material having at least one oxide of Al, Ti, Zr, Hf, and Si applied thereto in an amount sufficient to provide stable panel operating voltages which do not significantly change with panel operating time.

Abstract: The thin film EL device includes a luminescent layer made of column polycrystals formed by independently evaporating luminescent host material and an activator and then combining evaporated substances on a substrate.Electrons in the luminescent layer are accelerated by electric field applied from outside efficiently collide against the activator without being intercepted by interfaces between crystalline particles. The thin film EL device can be used for display, illumination, writing, reading out and erasure of signals of photo- recording medium.

Abstract: A deflection unit for a color television picture tube having in the neck thereof an electron gun system for producing a central electron beam coplanar with two outer electron beams. The deflection unit comprises a system of line deflection coils and a system of field deflection coils. The gun end of the system of field deflection coils is provided with two plate-shaped elements of a soft-magnetic material located at a distance from each other in the circumferential direction of the neck of the tube. Such elements are movable in that direction from a neutral position in which the distances between the centers thereof and the outer beams are equal, to a position in which one of such distances is greater than the other in order to correct picture balance errors due to unequal deflection of the beams.

Abstract: A planar tension mask is disclosed for use in a color cathode ray tube having a substantially flat faceplate. The shadow mask according to the invention has an aperture pattern characterized by the vertical pitch of the apertures being constant, but with the horizontal pitch of the apetures increasing outwardly from the mask center according to a function which is parabolic with horizontal displacement, and parabolic with vertical displacement. The horizontal pitch increase is isotropic in the sense that the increase in pitch is the sum of the horizontal displacement increase and the vertical displacement increase. A color cathode ray tube front assembly having such a shadow mask is also disclosed.

Abstract: A dispersive type flexible luminescent base plate having a transparent electrode formed on one side of the plate, a layer of phosphor applied to the transparent electrode, and a second, flexible electrode disposed opposite to the transparent electrode. The base plate consists of film of synthetic resin. The second electrode is a lamination that consists of a conductive layer disposed on the phosphor layer side and a layer of a low resistance disposed on the external side. The conductive layer consists principally of conductive fine particles.

Abstract: Gas mixtures for use in spark gap closing switches comprised of fluorocarbons and low molecular weight, inert buffer gases. To this can be added a third gas having a low ionization potential relative to the buffer gas. The gas mixtures presented possess properties that optimized the efficiency spark gap closing switches.

Abstract: A cathode ray tube has an envelope comprising a mild steel rear housing (1) with a side wall portion (4) defining an opening over which a flat, glass, faceplate (2) is mounted. The faceplate is sealed in a vacuum tight manner using a compliant pressure bonded seal (10), comprising pressure deformable material such as lead, to the outer, flat surface of a flange (8) of the rear housing which projects inwardly of the opening from the side wall portion.

Abstract: A cathode-ray tube comprises an electron beam generating section provided at one end of the tube, a target provided at the other end of the tube, and a group of electrodes provided on an inner wall of the tube for focusing and deflecting an electron beam. The electrode group includes first and second electrodes between the one and other ends of the tube in the mentioned order. The first electrode has a lead electrode portion for supplying an electric potential to the second electrode. The lead electrode portion extends along the tube axis with a zigzag form in which an angle .angle.MZN of a convave apex M and a convex apex N adjacent thereto spanning in a circumferential direction centering the tube axis Z is not smaller than 115.degree. or a spiral form which rotates centering the tube axis at a rotation angle not smaller than 420.degree..

Abstract: A compact, wide angle light comprising a concave reflector, lens and light emitter. The lens is provided with spacially displaced parallel light spreaders while the reflector is comprised of a linear section, with side walls interconnected by a parabolic section, disposed between parabolic dish end sections.

Abstract: An improved metal-halide arc discharge lamp includes an arc tube having a substantially cylindrical body surrounded laterally by a substantially cylindrical heat-conserving sleeve within an evacuated outer envelope. The ratio of the outer radius of the arc tube divided by the inner radius of the sleeve falls within an optimum range of approximately 0.54 to approximately 0.68, and preferably within a range of approximately 0.60 to approximately 0.63. A lamp constructed in accordance with the invention exhibits improved luminous efficacy and color rendering in comparison to prior art counterparts. The improved performance is believed to be attributable to the more nearly isothermal operation of the arc tube for a given wall loading.

Abstract: A decorative bulb includes:a bulb socket, a pair of doubly-sticking conducting plates inserted in the socket to electrically connect a pair of filament leads with two electric wires, a sealing plug sealing the socket bottom and squeezing the two wires with the two conducting plates for ensuring a better electric contact between the wires and the conducting plates, and a bulb having an annular groove formed on a bulb periphery engaged with a ring extension formed inside the socket, so as to obtain a decorative bulb with stabler mounting of the grooved bulb within the ring-extended socket for water-proof purpose and to save production cost by eliminating a base as conventionally embedded between the bulb and the socket.