Abstract: An antenna getter assembly for cathode ray tubes includes an electrically insulating member between the getter ring and the electron gun. The insulating member is provided with a shield which protects the member from deposition of conductive materials thereon and also prevents electrostatic charging thereof. The assembly is employed in conjunction with high electrical resistance internal coatings.

Abstract: Incoming diphase signals E which have base bit intervals delineated by spaced clocking signals with data information occurring between the clocking signals are fed to a four bit shift register 10 which in cooperation with an exclusive OR-gate 14 generates a pulse D for each diphase signal E transition. Upon receipt of a preamble comprising four diphase signal transitions, a shift register 16 provides a signal MSR which initiates the decoding of the following data information. A counter 24 stores counts related to the time intervals between each two successive clocking signals and counters 26 and 28 store a count related to an immediately subsequent time period which is three-fourths of the time interval. The occurrence of data information is sensed by a logic array 20 during successive time periods and a non-return to zero mark-space output signal K is stored in a flip-flop 22. The logic array 20 continually updates the counts stored by the counters 24, 26-28.

Abstract: An electron image storage tube is provided with a bistable storage target employing a transparent faceplate on the inside surface of which there is provided a transparent coating of conductive material. A layer of storage dielectric phosphor is disposed onto the coating of conductive material and an array of conductive fluorescent dots in electrical connection with the conductive coating extends through the layer of storage phosphor and beyond the outer surface of the storage phosphor. The conductive fluorescent dots provides collector electrode means for collecting secondary electrons emitted from charge images that have been written onto the storage dielectric phosphor so that such charge images remain as stored information thereon and the conductive fluorescent dots will enable non-stored electron images having a high degree of brightness and the same general or different color to be displayed simultaneously with the stored charge images on the same general area of the target structure.

Abstract: A light conductor is utilized in a vidicon type pick-up tube to transmit light from a light source to the tube target for biasing the dark current of the target. The light conductor is preferably a bifurcated glass rod having a stem and two branches defining a crotch region. The light that is transmitted through the stem into the branches is selectively attenuated by filling in the crotch region with either glass redistributed from portions of the stem and branches or with additional glass. By controlling the light transmission with predetermined amounts of glass, the illumination and, hence, the dark current of the target can also be controlled.

Abstract: A display device includes an evacuated envelope having a back wall and a plurality of mutually parallel internal support walls. Each of the support walls comprises a separable first and second wall member. Each of the first wall members has a proximal end in contact with the back wall. The support walls are substantially perpendicular to the back wall so that the support walls partition the device into a plurality of channels. A faceplate assembly integral with one surface of the envelope comprises in combination; a viewing faceplate, a mosaic screen, registration blocks disposed on the inner surface of the faceplate beyond the screen, a plurality of second wall members detachably attached to the registration blocks so that each of the second wall members extend between the distal end of a different one of the first wall members and the screen, and a plurality of discrete shadow masks slidably attached to and extending between adjacent ones of the second wall members.

Abstract: A display device includes an evacuated envelope having a plurality of support walls forming a plurality of parallel channels. A mosaic phosphor screen is deposited on a front wall of the envelope. A segmented shadow mask is mounted in spaced, parallel relation to the screen. A plurality of discrete mask segments are required to cover the screen. Each of the mask segments extends along substantially the full length of the channels. Mounting tabs extend from two oppositely disposed edges of the mask segment parallel to the major dimension of the channels.

Abstract: An electron tube, preferably a camera tube, has an improved structure for supporting and centering a cylindrical electrode within a tubular envelope having a precisely formed inner surface. The support structure comprises a centering ring that has a plurality of radial sectors formed to a ring circumference and a plurality of resilient radial finger-like members formed intermittent the radial sectors. The ring circumference is formed within a close spacing of the inner surface of the envelope and is attached to the electrode so that the ring circumference is substantially concentric with the outer surface of the electrode. The finger-like members of the ring are formed to define an outer diameter that is greater than the inner diameter of the envelope, so that when the electrode with the attached ring is inserted into the envelope, the members flexibly bear against the inner envelope surface and guide the ring into position without deforming the radial sectors.

Abstract: A light emitting display device having a light emitting element mounted on a first reflector at the optical center of a reflective surface thereof and a second lead connected to the light emitting element with a metal wire, wherein in order to miniaturize the light emitting display device and to provide the light emitting display device with satisfactory characteristic as regards appearance when turned on, the first reflector, which is also used as a first lead to the device, has a cut-off portion. The second lead is disposed adjacent to the cut-off portion and the metal wire connecting the light emitting element to the second lead passes over the cut-off portion.

Abstract: A gas discharge display tube, which has a rear tube wall with parallel extending cathode strips mounted thereon characterized by the cathode strips being mounted by each strip having a pair of spring plates slidably received on pins which are fused into the rear wall of the tube. Preferably, each of the strips has a box-like cross section for slidably receiving the spring plates so that the strip can be shifted along its length on the pins. In addition, the pins for adjacent strips are offset from each other so that the pins are aligned in two rows at each end of each of the cathode strips.

Abstract: The optical cross-talk in a camera tube is reduced by the provision of a filter element which overlaps the entire target. The filter may be arranged in front of the photosensitive target and have a spectral transmission which is adapted to the spectral sensitivity of the target. The filter may also be arranged behind the target and preferably constructed so that it is also low-reflective for incoming light. In order to prevent excessive transverse conduction, such a filter may have a mosaic structure consisting of mutually insulated areas. Optical cross-talk may also be reduced by mounting the target on a support which is separately arranged in the camera tube and which has a small thickness.

Abstract: A picture display tube comprising an internal resistive layer to restrict the peak current which at the operating potential of the tube is associated with an electrical flash-over possibly occurring therein. The effective part of the resistive layer extends in the neck and over the transition from neck to cone of the envelope of the tube. The resistive layer represents a static resistance value of at most 10.sup.4 Ohm and a dynamic resistance value of at least 300 Ohm.

Abstract: A coaxial dye laser flashlamp, each electrode of which is made of spaced rings joined by several molybdenum strips evenly spaced about and between the coaxial quartz tubes of the flashlamp. The coaxial quartz tubes are then fused together in the regions of the molybdenum strips.

Abstract: A hollow, cylindrical, rotating anode, X-ray tube for tomodensitometers.This tube contains a bell-shaped, hollow, cylindrical anode functioning by transmission, which is swept on its inner surface by an electron beam and produces in cooperation with a collimation device having several openings a series of fine X-ray beams, which are roughly parallel and coplanar, the number of these beams being equal to the number of openings in the collimation device. Such a tube makes very fast tomography possible.

Abstract: A spark plug, wherein a central electrode is electrically insulated from an uter electrically-conductive casing (ground to an internal combustion engine when in use) by an insulator sealed in the casing, separating the central electrode from the casing and having a taper-nose portion which is designed to be exposed to unburnt carbon in combustion gases of a combustion chamber, is modified to facilitate carbon removal from the taper-nose portion. Discrete isolated particles or isolated aggregates of particles of vanadium oxide are adhered over the exposed surface of the taper-nose portion to improve the self-cleaning ability of the spark plug without decreasing the degree of electrical insulation provided by the insulator. The particles of vanadium oxide are formed from a suspension which is applied to the surface of the taper-nose portion of the spark plug. The resulting coating is then dried in situ.

Abstract: An electrical igniter device for a combustion apparatus such as a gas turbine comprises a unitary tubular conductive shell into which an assembly of coaxially arranged ingniter components are breech loaded. A spark electrode and a terminal extension are positioned in electrical contact within a hollow electrode insulator in the assembly. The electrode insulator is longitudinally positioned in the device between an internal shoulder in the shell and a removable retaining sleeve. The retaining sleeve is in turn held in position against the electrode insulator by an end coupling which is threaded into the breech end of the shell. An external lead connected to the end coupling transmits an electrical charge through the coupling to the shell. Inwardly extending tabs formed off the end of the shell opposite the breech end, together with the spark electrode within the shell, define a spark gap.

Abstract: An amorphous, resistive thin film is deposited on internal surfaces of portions of a cathode ray tube by the pyrolysis of a liquid mixture of colloidal graphite and a heavy metal resinate to produce a film which is a mixture of graphite and the oxide of the metal. The metal resinate is a combination of tin and antimony resinate. The film is deposited on the tube neck in the region of the G3 and G4 electrodes to impede arcing. The amorphous film is also deposited on the tube funnel in the region extending from the snubber contact locations up to the anode voltage terminal. The pyrolysis of the heavy metal resinate and colloidal graphite results in a film having a resistance ranging from 10.sup.3 to 10.sup.8 ohms point to point. The amorphous film which does not require a binder, has good adhesion and scratch resistance characteristics, thereby reducing conductive particle contamination.

Abstract: Color filter arrays for color imaging devices are disclosed. The arrays are formed in a single layer of a transparent binder containing at least one cationic photo-bleachable dye. The layer has a thickness less than 10 microns, and the dye is present in the layer in an amount sufficient to impart a density to the layer of at least about 0.5 in that portion of the spectrum in which it selectively absorbs. A method of making the arrays is also disclosed which includes the steps of (1) forming a layer of a transparent binder containing the photo-bleachable dye or dyes and a sensitizer; (2) exposing the layer to a pattern which represents a set of filter elements so as to photo-bleach the photo-bleachable dye; and (3) fixing the layer by leaching the sensitizer from the layer. In particularly preferred embodiments, the dyes are chosen so that those which absorb at longer wavelengths have a lower bleaching efficiency than those which absorb at shorter wavelengths.

Abstract: An X-ray tube unit for neutral-grounded use which comprises an X-ray tube having an envelope with the central portion formed of a metal cylinder, a housing containing the X-ray tube, and a lead wire extending from the cylinder to the outside of the housing, whereby the X-ray tube is electrically insulated from and fixed to the housing, and charged potential in the metal cylinder is dropped.

Abstract: To provide a continuous spectral output within the visible right range, particularly for spectroscopic and photometric purposes, the lamp has a fill of nitrogen and xenon mixed of N.sub.2 : Xe of 6:1 to 1:1, by volume, with an overall filling pressure in the range of 50 to 200 mbar, preferably at a mixing ratio of 4:1 with an overall fill pressure of 100 mbar.

Abstract: A retina is provided for a pyroelectric vidicon which is rugged, long liv and has increased resistance to contamination by normal environments encountered during testing and subsequent installation in the vidicon tube.