Abstract:
A method for making a storage target for use with a cathode ray tube involves forming an insulating material at least around each of an array of collector electrode members which has been formed onto a conductive layer but leaving outer ends of the collector electrode members exposed and fixing a layer of dielectric storage material onto the conductive layer and in engagement with the insulating material around the collector electrode members to prevent luminance around the collector electrode members.
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:
In order to avoid picture disturbances by electric charging phenomena on the tube wall in a camera tube in which no target material is present on the inner wall of the cylinder tube, the tube wall is provided with a surface potential stabilizing material between the window connection and the mesh electrode of the camera tube. This stabilization can be realized by way of a local cover layer having the desired electric conductivity or secondary emission properties, or by locally adapting properties of the glass of the tube wall thereto.
Abstract:
An admixture of Yttrium oxide, or yttrium oxysulfide, or yttrium oxide or yttrium oxysulfide activated by a rare earth element and P1 phosphor, manganese-activated zinc orthosilicate provides a viewable bistable storage target for cathode ray tubes having increased operating life.
Abstract:
The electrophotographic manufacture of the phosphor patterns for a display screen of a color television display tube. This process is performed in as many stages as there are different phosphor zones and possibly also for a light-absorbing intermediate pattern. Contamination of a phosphor which has already been precipitated may easily occur with a next phosphor in this case. According to the invention this is obviated by an intermediate rinsing operation with a solution of an antistatic agent, in an apolar solvent. The antistatic agent is selected from the group consisting of soaps of bivalent metals, soaps of multivalent metals and mixtures thereof.
Abstract:
An improvement in methods of image analysis is described whereby the time required for analyzing certain types of images can be substantially reduced. The invention utilizes the light integration characteristic of a television camera to combine a succession of images applied thereto into a single composite image. A video signal of the composite image is then obtained by scanning in the usual way. Analysis of the video signal is performed in a known manner after threshold detection.The invention is of application to the analysis of microscopic specimens which are generally black or dark grey and which include a few widely spaced white or light grey features, on which the analysis is to be performed.One embodiment utilizes a single scanner and switching devices for alternately producing scanning and not scanning. A second embodiment utilizes two or more scanners with switching devices for causing first one scanner and then the other to scan for reading and erasing whilst the other is quiescent and an optical diverting device for applying the images to the quiescent of the two scanners.
Abstract:
A cathode ray storage tube provided with a storage target having a multiplicity of segments of the collector electrode extending through the dielectric layer of the storage target. These segments comprise glass beads secured together and to a surface of an insulating support plate, a conductive collector electrode coating is applied onto the support plate surface and glass bead segments and then the storage dielectric layer is applied thereover which has proper thickness so that the segments extend above the dielectric thereby providing collector areas for collecting secondary emitted electrons from the dielectric.
Abstract:
A cathode ray storage tube provided with a storage target having a multiplicity of segments of the collector electrode extending through the dielectric layer of the storage target. These segments comprise dots or continuous or broken protrusions of conductive particles that have been photo-deposited into position onto the collector electrode and then the storage dielectric layer is applied thereover which has proper thickness so that the segments extend above the dielectric thereby providing collector areas for collecting secondary emitted electrons from the dielectric.
Abstract:
An optical or photon image is converted by a photocathode to an electron ge. A semiconductor plate receives the electron image on a first side thereof. For an electronically controlled time, the image is integrated and stored in thousands of reversed biased PN junctions connected to micro-sized conductors, in the plate. An intensified image is then transfered from a second side of the plate at an electrically controlled time to adjacent moving film which is exposed to intensified images from the plate.
Abstract:
A charge controlled viewing storage tube uses an insulating film to store charge and a field-effect layer adjacent a phosphor layer for its switching function. Such field-effect layer is now made easier to fabricate in large areas by making it in the form of tiny flakes that are sprinkled onto a phosphor during the latter''s curing stage.