Abstract:
An arc lamp construction wherein a pair of metallic electrodes defining an arc gap are mounted within a quartz envelope and are secured within said envelope by shrinking the same into engagement with a foot portion of each electrode. The foot portions of the electrodes are tapered and include certain surface irregularities large enough to allow the quartz envelope, when shrunk thereabout, to be deformed into or around the irregularities to provide an interlocking mechanical mating therebetween to prevent longitudinal displacement of the electrodes within the envelope.
Abstract:
PURPOSE:To reduce fluctuation of thickness of electrode while to reduce warp by providing low melting point glass composed of low melting point glass fine powder and organic binder on both faces of metallic mesh applied with adhesive liquid of insulation paste. CONSTITUTION:Insulation paste 2 is applied or silk screen printed on metallic mesh(lath material) 1' of 426 alloy composed of nickel, chromium and iron, then dried under the condition of 120-130 deg.CX10-15min. It is further burnt under top condition of 550-570 deg.CX1hr and low melting point glass adhesive liquid is screen printed then dried under the condition of 120-130 deg.CX10-15min to form an adhesive paste layer 3. Since 426 alloy of spacer substrate is meshed, warp of electrode for absorbing the warping force is reduced to improve accuracy of electrode spacer to be employed in display structure resulting in considerable improvement of final picture quality of image information machine such as cathode luminescence type display structure.
Abstract:
Provided is an x-ray tube capable of easily and stably performing a focus dimension variable control and a tube current control. The x-ray tube is equipped with a cathode (10) having a filament (11) and a trench portion (16) in which the filament (11) is housed. In the x-ray tube, the trench portion (16) has: a pair of first bottom surfaces (S1) having the same plane as a plane on which the filament (11) is positioned and sandvviching the filament (11) in the width direction (db) of the trench potion (16); and second bottom surfaces (S2) sandwiching the filament (11) and the pair of first bottom surfaces (S1) in the length direction (da) of the trench portion (16) and positioned on the more opening (16a) side of the trench portion (16) than the pair of first bottom surfaces (S1).
Abstract:
An improved design for maintaining separation between electrodes 1, 2 in tunneling, diode, thermionic, thermophotovoltaic and other devices is disclosed. At least one electrode 1 is made from flexible material. A magnetic field B is present to combine with the current flowing in the flexible electrode 1 and generate a force F that counterbalances the electrostatic force or other attracting forces between the electrodes. The balancing of forces allows the separation and parallelism between the electrodes to be maintained at a very small spacing without requiring the use of multiple control systems, actuators, or other manipulating means, or spacers. The shape of one or both electrodes is designed to maintain a constant separation over the entire overlapping area of the electrodes 1,2. The end result is an electronic device that maintains two closely spaced parallel electrodes 1,2 in stable equilibrium with a uniform gap therebetween over a large area in a simple configuration for simplified manufacturability and use to convert heat to electricity or electricity to cooling.
Abstract:
Tube photomultiplicateur comprenant une pluralité d'électrodes devant être fixées par des pattes (10) de fixation à l'intérieur d'une fente (20). Selon l'invention, chaque patte (10) de fixation est fixée de manière serrée à l'intérieur de la fente (20), et, en particulier, chaque fente (20) comprend, d'une part, deux extrémités (22a,22b) de profil continûment variable, en contact avec des bords (21a,21b) de la patte (10) de fixation situés sur une première face (11) de ladite patte, et, d'autre part, au moins un méplat (23) de support central en contact avec une deuxième face (12) de la patte (10) de fixation, la patte (10) de fixation présentant à sa base des arrondis coopérant respectivement avec les profils desdites extrémités (22a,22b) de la fente (20). Application aux tubes photomultiplicateurs dont les dynodes présentent des pattes de fixation.
Abstract:
Structure intégrée de tube à électrons pouvant être utilisée dans un tube cathodique économique et résistant, dans lequel est requis un faisceau d'électrons de très grande stabilité. La structure est réalisée par liaison à réaction simultanée d'éléments céramiques sélectivement métallisés (7), (9) et (12) sur des éléments métalliques (5), (8), (11) et (15) sous une petite charge axiale indiquée par les flèches (3) à une température légèrement en dessous du point de fusion du métal. Un assemblage d'anode et de structure d'électrode déflectrice intégrée de manière analogue peut être fixé sur l'anneau (15), de même qu'un assemblage de composants de cathode thermionique standard. La structure est particulièrement indiquée pour être utilisée avec un élément-cible à semi-conducteurs.
Abstract:
Each of the electrodes (5),(6),(7), differing from each other in their degree of rigidity is provided between a cathode (2) and a fluorescent material surface (1) through a connecting spacer (3), and the electrodes (5),(6),(7), are joined and secured together by firing. In this case, a plurality of kinds of connecting spacers (3) (spacers (3'),(3"),(3"')), are prepared which differ from each other in the thickness ratio between constituent members, i.e., a ground metal (12), an insulating layer (13) and glass frit (14) within such a range that the quality of each of the constituent members is not changed and there is no change in the distance between the electrodes (5),(6),(7), different in rigidity from each other. Each of the plurality of kinds of connecting spacers (3) is employed, and the electrodes (5),(6),(7), and the connecting spacers (3) are joined 'and secured together by firing in a state wherein the turning moment is cancelled about the neutral axis of an electrode block constituted by the electrodes (5),(6),(7), different in ridigity from each other, thereby forming an electrode structure for a display device. It is possible to increase the assembling accurancy of the electrode block. The electrode structure is extremely advan- tageous from the viewpoint of the accuracy of positioning of the electrode block in relation to the fluorescent material surface (1).
Abstract:
An electron multiplier using a laminated channel plate assembly. The electron multiplier is usable in display tubes and image intensifiers. A problem in channel plate electron multipliers is to space apart accurately the dynodes in a simple and inexpensive way. In the present invention this problem is overcome by using discrete separating elements (16) such as ballotini to space apart the dynodes (11, 12, 13, 14). The elements (16) are bonded to the surface of one dynode of adjacent pairs of dynodes and is either bonded to or clamped against the other dynode of the pair. Various methods of making the laminated channel plate assembly are disclosed.