Abstract:
Method of and apparatus for exciting luminescence in a cathode ray tube (CRT) having an image screen that is both cathodochromic and cathodoluminescent, whereby an electron beam effects luminescence of the image screen as well as writing upon the screen. Writing is accomplished at a high level of beam exposure and luminescence is accomplished at a low level of exposure.
Abstract:
A high contrast cathode ray tube which incorporates a phosphor material responsive to electronic bombardment and generates ultraviolet radiations in response thereto and in which the ultraviolet phosphor is provided on the inner surface of a fiber optic window. Positioned on the outer surface of the fiber optic faceplate is an ultraviolet transmitting, visible absorbing filter with an organic phosphor emitting visible light in response to ultraviolet excitation and a visible transmitting, ultraviolet absorbing filter provided on the outer surface of the organic phosphor.
Abstract:
A vidicon viewed storage tube device, in which information is continuously displayed on a dark trace direct view storage tube. The tube contains a first or writing electronic gun, and a second or erase gun which removes the trace by heat impinging upon activated portions of the tube phosphor coating. A vidicon scans the storage tube in such manner that the newest line of information on the storage tube is displayed at the upper most portion of the vidicon display to provide a ''''passing scene'''' or ''''moving window'''' type of display.
Abstract:
PURPOSE: There is provided a semiconductor laser CRT driven at the normal temperature in which sealing of a glass bulb is secured using an adhesive having the same thermal expansion coefficient as that of a metal ring used in the conventional laser CRT. CONSTITUTION: A semiconductor laser CRT driven at the normal temperature includes a laser target(101) having a semiconductor substrate formed from a semiconductor compound, a front mirror layer formed on the semiconductor substrate, an active layer formed on the front mirror layer and a rear mirror layer formed on the active layer, a transparent support plate(100) on which the laser target is mounted, a glass bulb containing an electron gun(104) for emitting electron beam, and an adhesive attaching the glass bulb and the transparent support plate to each other.