U.S. Philips Corporation

Antonius J Van Der Bolt

Wilhelmus M Van Der Steen

Arthur M Hoeberechts

Martinus C Verhoeven

Bart Van Der Eijk

Jan P Meijer

Johannes A Van Leunen

Walter H Kuhl

In a color display tube a shadow mask skirt is welded to a frame at least near the ends of two oppositely located sides of the frame, and engages the ends of the other two sides of the frame in a fractional manner.

Color display tube with vibration damping in a supporting frame

A colour picture tube in which a shadow mask is attached to a frame which consists of two short sides and two long sides connected with angular elements. The ends of the short sides of the frame are connected to the angular elements in a way to leave the sides of the frame extending free from the angular elements. The skirt of the shadow mask bears against this free portion. As a result, the shadow mask 10 is less sensitive to vibrations.

Colour display tube with shadow mask less sensitive to microphonics

A method of manufacturing light detection units which comprise a photocathode disposed on an entrance window, an electron detector including a semiconductor junction, and means which transmit the electrons from the photocathode to the electron detector including a perforated aperture plate disposed between the entrance window and the electron detector. The photocathode is formed on a surface of the entrance window after assembling the entrance window and electron detector to the means which transmit the electrons. Perforations in the aperture plate are covered with spherical shields while the photocathode is formed on the surface of the entrance window. The shields are then removed.

X-Ray detector

Growing community of inventors

Eindhoven, Netherlands

Antonius J Van Der Bolt