Abstract: A high-pressure discharge lamp having an electrode including an electrode rod, a melted part and a coil part, and satisfying 0 < La L < 0.3 , where La denotes an average value of a length in units of mm of an exposed portion of the coil part in an axial direction of the electrode rod, the exposed portion being not covered with the melted part, and L denotes a maximum value of a length in units of mm between a tip of a head of the electrode rod and an opposite edge of the coil part to the melted part, measured in the axial direction.

Abstract: A high-pressure discharge lamp having an electrode including an electrode rod, a melted part and a coil part, and satisfying 0 < La L < 0.3 , where La denotes an average value of a length in units of mm of an exposed portion of the coil part in an axial direction of the electrode rod, the exposed portion being not covered with the melted part, and L denotes a maximum value of a length in units of mm between a tip of a head of the electrode rod and an opposite edge of the coil part to the melted part, measured in the axial direction.

Abstract: An embodiment of the invention is a microtip microplasma device having a first metal microtip opposing a second metal microtip with a gap therebetween. The first and second metal microtips are encapsulated in metal oxide that electrically isolates and physically connects the first and second metal microtips. In preferred devices, the first and second metal microtips and metal oxide comprise a monolithic, unitary structure. Arrays can be flexible, can be arranged in stacks, and can be formed into cylinders, for example, for gas and liquid processing devices, air filters and other applications. A preferred method of to forming an array of microtip microplasma devices provides a metal mesh with an array of micro openings therein. Electrode areas of the metal mesh are masked leaving planned connecting metal oxide areas of the metal mesh unmasked.

Abstract: A discharge lamp comprises an electrode assembly structured to induce tension in certain of the component electrodes and compression in others of the component electrodes. The balancing tensile and compressive forces cause the electrode assembly to be a unitary, self-supporting structure, which can be inserted into a prefabricated envelope and in which the forces are induced independently of interaction with the envelope. The electrodes in tension may be relatively thin wires and the electrodes in compression may be relatively thicker rods. The electrode assembly may include concentric arrangements of electrodes, with a plurality of rod counter-electrodes spaced circumferentially around a thin wire electrode, or a plurality of thin wire electrodes spaced circumferentially around a central rod counter-electrode. In other embodiments, a counter-electrode may have a flat, polished surface facing one or more electrodes overlying the surface. Dummy electrodes may equalize bending loads on the counter-electrode.

Abstract: An embodiment of the invention is a microtip microplasma device having a first metal microtip opposing a second metal microtip with a gap therebetween. The first and second metal microtips are encapsulated in metal oxide that electrically isolates and physically connects the first and second metal microtips. In preferred devices, the first and second metal microtips and metal oxide comprise a monolithic, unitary structure. Arrays can be flexible, can be arranged in stacks, and can be formed into cylinders, for example, for gas and liquid processing devices, air filters and other applications. A preferred method of to forming an array of microtip microplasma devices provides a metal mesh with an array of micro openings therein. Electrode areas of the metal mesh are masked leaving planned connecting metal oxide areas of the metal mesh unmasked.

Abstract: A discharge lamp comprises an electrode assembly structured to induce tension in certain of the component electrodes and compression in others of the component electrodes. The balancing tensile and compressive forces cause the electrode assembly to be a unitary, self-supporting structure, which can be inserted into a prefabricated envelope and in which the forces are induced independently of interaction with the envelope. The electrodes in tension may be relatively thin wires and the electrodes in compression may be relatively thicker rods. The electrode assembly may include concentric arrangements of electrodes, with a plurality of rod counter-electrodes spaced circumferentially around a thin wire electrode, or a plurality of thin wire electrodes spaced circumferentially around a central rod counter-electrode. In other embodiments, a counter-electrode may have a flat, polished surface facing one or more electrodes overlying the surface. Dummy electrodes may equalize bending loads on the counter-electrode.

Abstract: The inventive structure has a reflector substrate comprising a brittle material, a first power supply member electrically connected to a first electrode and a second power supply member electrically connected to a second electrode. A first through hole and a second through hole are provided in the reflector substrate. The first power supply member is inserted into and fixed to a first through hole and the second power supply member is inserted into and fixed to the second through hole. A discharge lamp is supported by the reflector substrate through the power supply members, while the discharge lamp is distant from the reflector substrate.

Abstract: The invention relates to a discharge lamp, in particular a high-pressure discharge lamp, having a discharge vessel (1) which has two diametrically opposite necks (2, 3) into each of which a holding rod (5, 10) is fused at least in places, with an electrode (4, 9) which extends into the discharge vessel (1) being arranged on each holding rod (5, 10), and with in each case at least one annular plate (7, 12) at least partially clasping a holding rod (5, 10), with at least one of the annular plates (7, 12) being arranged in the discharge vessel (1).

Abstract: An electric lamp provided with a bulb (1) of quartz glass and a metal electrode rod (3;21,22). The electrode rod (3;21,22) is at least partly embedded in the quartz glass material of the bulb. At least a major part of the surface of the electrode rod (3;21,22) that is in contact with the quartz glass material is provided with grooves (6) having a substantially longitudinal direction.

Abstract: There is disclosed a display apparatus including a rear electrode unit, electron beam generating sources, a front electrode unit including a plurality of electron beam control electrodes laminated together with insulating spacers therebetween, and a face plate formed with a fluorescent screen. The front electrode is coupled together by first metallic coupling pins fixed on the electron beam control electrode arranged to confront the fluorescent screen. The rear electrode unit is coupled with the electrode unit by second metallic coupling pins fixed to one of the electron beam control electrodes other than the electron beam control electrode confronting the fluorescent screen.

Abstract: A grid-controlled electron tube is constructed with a common anode and an array of individual cathode-grid modules. The simple modules can be built with greater accuracy than large, complex electrodes. The modules can be individually tested before final assembly, and can be individually replaced in case of a failure during construction or later operation. In a preferred embodiment, the cathode is a cylindrical filament surrounded by a coaxial grid, each grid turn being mounted to a common support on the side opposite the anode. In a tetrode embodiment, additional focusing bars at the sides of the grid direct electrons into beams which pass between large screen-grid wires.

Abstract: The present invention relates to a mounting of carbon electrodes on a holder of an arc lamp used as a light source for a weatherometer or a lightfastness tester. In the holder, one end of the carbon electrodes and the holder are threadedly connected with each other.

Abstract: A carbon arc lamp for use in a light fastness tester and other similar testers, and having a metal rod extending from a carbon electrode mounting part in the upper part of the lamp down to a point just below an upper metal plate. A portion of the rod is engaged by a ring clutch which is connected to an automatic feed control for the carbon electrode. The lower end of the metal rod has the upper end of the carbon electrode mounted thereon by a threaded connection.