Abstract:
An electron beam current modulator is provided between a cathode and a laser screen of a cathode-ray tube and has at least three deflecting plates positioned around, and symmetrically with respect to an optical axis of the cathode-ray tube and a diaphragm having an aperture of a regular shape. An electromagnetic control system is provided between the cathode and deflecting plates. A pickup senses position of the electron beam and produces a signal in case of an offset of the electron beam with respect to the optical axis. A video signal source is connected to a carrier generator having an output connected to an input of a phase shifter. The phase shifter has its outputs connected to the deflecting plates to rotate the cross-section of the electron beam in a plane drawn perpendicularly with respect to the optical axis. The apparatus has a control unit having an input connected to the pickup and an output connected to the electromagnetic control system.
Abstract:
A contour plotter for testing the response of an infrared detector comprig a small, cathode-ray tube with a hidden electron gun for generating a flying-hot-spot raster, a refracting, optical lens for focussing a reduced image of this raster on the detector under test, an oscilloscope, a two-dimensional sweep generator for sweeping the oscilloscope and the small, cathode ray tube in synchronism, and an electronic amplifier for applying the output of the detector to the Z-axis of the oscilloscope so that the intensity of the oscilloscope scanning beam is varied in accordance with the detector output response.In one embodiment, the small, cathode-ray tube uses an infrared phosphor screen to produce a small source of radiation. In a second embodiment, the cathode-ray tube uses a thin membrane screen formed by a thin film dielectric substrate with a refractory metal film deposited on it for producing a flying hot spot.
Abstract:
A cathode ray tube (CRT) having an image screen composed of a material that is both cathodochromic and fluorescent and in which the cathodochromic coloration lifetime is at least a month. The material employed is Na6 Al6 (GeySi1 y)6 O24.2(1-z) NaX wherein z is the fraction of NaX vacancies, X is chosen from the group consisting essentially of chlorine, bromine, OH and iodine and mixtures thereof, and y varies from 0.003 to 0.30.
Abstract translation:一种阴极射线管(CRT),具有由阴极颜色和荧光材料构成的图像屏幕,其阴极着色着色寿命至少为一个月。 所使用的材料是Na 6 Al 6(GeySi 1-y)6 O 24.2(1-z)Na x其中z是Na x空位的分数,X选自基本上由氯,溴,OH和碘组成的组及其混合物, y从0.003变化到0.30。
Abstract:
A dark trace cathode ray tube comprising an evacuated envelope with a transparent faceplate, a cathodochromic screen mounted within said envelope and adjacent said faceplate comprising a layer of a cathodochromic material on a transparent conductive support, means for scanning selected areas of said cathodochromic screen with electrons, means for flooding said cathodochromic screen with electrons of an energy appropriate to darken said scanned areas but of an energy which substantially is ineffective to darken the unscanned area, a grounded collector mesh positioned adjacent said cathodochromic screen and in the path of said electrons from said flooding means and said scanning means.
Abstract:
A method of manufacturing storage/display two chamber tubes by providing a molded soft glass envelope with a high outer shoulder at an open end and a low inner shoulder at the same end to form a trough in-between. The trough is filled with liquid metal, having a suitable melting point, such as indium, and the metal is allowed to solidify. A metal ring bearing a membrane for separating the two chambers one from another is placed on the solidified metal with air passages provided between the ring and the trough metal. A faceplate is sealed to the outer shoulder providing a closure of the second chamber and both chambers of the tube are then evacuated through a single tubulation. Finally, the tube is heated to bake out gasses trapped in the walls of the tube and to melt the trough metal. Upon melting, the metal ring settles into the trough metal forming a hermetic seal between the two chambers.
Abstract:
Method and means for creating an interaction between a beam of particles and electromagnetic waves, particularly at optical frequencies, wherein a high velocity beam of particles, such as electrons, is passed through a suitable interaction zone, for example, in the form of an optically transparent dielectric target, such as a thin crystalline film, while the target is irradiated with laser light polarized generally in the direction of travel of the particles, whereby the particles upon striking a suitable medium, such as a non-luminescent screen, give off light of the same color as the laser, which becomes visible on the screen. The interaction thus derived can be used in many particular applications such as, for example, in a color television tube and other electronic display or information storage devices.
Abstract:
A laser cathode ray tube (laser-CRT) is provided. The laser-CRT includes a connection ring connected to an end portion of a glass bulb where an electron gun is installed, a disk having a single-crystal for generating laser beams when electron beams emitted from the electron gun are input, a support ring connected to the disk and the connection ring, and a junction layer interposed between the support ring and the disk, having at least two metal thin films which have been pressurized and heated, to connect the support ring and the disk to each other.
Abstract:
A process for making an envelope for a projection televised tube, that includes a spherically curved electronic beam target surface spaced away from the neck of the tube, a larger reflective surface spherically curved concentrically with the target surface on an end plate located close to the tube neck, a target support that preferably constitutes a face plate for the envelope, and a hollow cylindrical spacer member for closing the side of the tube envelope and for holding the target support accurately spaced from the reflective surface, includes making the ends of the cylindrical member and the abutting peripheral surfaces of the end plate and target concentric with the target and reflective surfaces, so that slight relative lateral motion of the parts during assembly and bonding will not affect tube projection optics, while the relationship between the target and reflective surfaces is precisely maintained in spaced concentric relationship.