Thomson Tubes & Displays, S.a.

Thomson Licensing

Thomson Licensing S.a.

Jean-Claude Pruvost

Jean Remy Adamski

Jean-Remy Adamski

Jean-Luc Ricaud

Jeremy Langot

Francois Nizery

Francois Fichet

Body () formed from a porous matrix impregnated with an electron-emitting material, defined by external faces () that all have a roughness of less than 0.2 &#x3bc;m. Because of this surface finish, the operation and the lifetime of the cathodes provided with such cathode emissive bodies are substantially improved.

Cathode emissive body for an impregnated cathode of an electron tube

Method of assembling an emissive cathode for electron gun

Cathode structure and electron gun for cathode ray tubes

An improved cathode structure for a cathode ray tube includes a first metal tube which can receive an emission part and a heating element, a second metal tube constituting the cathode shielding, and means for retaining the first tube in position inside the second, wherein the retaining means are constituted by a single metal piece. In a preferential mode of implementation, the metal retention piece is constituted by a crown having branches extending in the direction of the axis of the crown.

Cathode structure for cathode ray tube

Growing community of inventors

Dijon, France

Jean-Claude Pruvost