Rca Inc.

Videocolor, S.a.

Thomas L Chase

Renato Sassoli

Kenneth A Long

Dino Duranti

George M Ehemann, Jr

A method for holding a cathode-ray tube in a fixed position during processing utilizes mounting lugs attached to the tube. The apparatus includes a platform having a plurality of legs positioned to support, respectively, the ends of the mounting lugs. Each of the legs has a recess therein aligned with an aperture in the respective lug end. Each lug is secured to the respective leg by a clamp, pivotally attached to each leg, which projects through the aperture into the respective recess when pivoted.

Method and apparatus for securing a cathode-ray tube during processing

An apparatus and method for holding a cathode-ray tube in a fixed position during processing utilizes mounting lugs attached to the tube. The apparatus includes a platform having a plurality of legs positioned to support, respectively, the ends of the mounting lugs. Each of the legs has a recess therein aligned with an aperture in the respective lug end. Each lug is secured to the respective leg by a clamp, pivotally attached to each leg, which projects through the aperture into the respective recess when pivoted.

Apparatus for securing a cathode-ray tube during processing

A method for printing a viewing-screen structure including projecting, at least three times, a light field from a light source, through a lens, an optical filter and incident upon a photosensitive layer. During one of the projecting steps, the light source and the nominal axes of the light source, the lens, the filter and the layer (which are substantially parallel to one another) are aligned along a common axis. During each of the other two projecting steps, the light source and the axis of the lens remain aligned along the common axis, and the axes of the filter and the layer are offset prescribed distances on opposite sides of the common axis.

Photographic method for printing a viewing-screen structure using a

An exposure lighthouse for use in printing screen structures for cathode-ray tubes comprising a lens assembly including a diffracting optical element, a main intensity-correction filter and a supplemental intensity-correction filter in series with the main filter. Both of the filters comprise preformed carbon particles in a light - transmitting binder.

Lighthouse having a main filter and a supplemental filter

A method for preparing a supplemental intensity-correction filter for an exposure lighthouse that is used to print viewing-screen structures for cathode-ray tubes. The method involves printing a screen structure without a supplemental filter, calculating how incremental areas of the light field must be modified at the surface of an optical element of the lighthouse to produce the desired screen structure, and then printing a supplemental filter on that surface having the transmission characteristics necessary to modify the light field as required.

Growing community of inventors

Lancaster, PA, United States of America

Thomas L Chase