EP 0107181 B1 19890607 - LIGHTHOUSE CORRECTION FILTER FOR A LIGHTHOUSE FOR MANUFACTURING FLUORESCENT SCREENS FOR COLOUR PICTURE TUBES
Title (en)
LIGHTHOUSE CORRECTION FILTER FOR A LIGHTHOUSE FOR MANUFACTURING FLUORESCENT SCREENS FOR COLOUR PICTURE TUBES
Publication
Application
Priority
DE 3239559 A 19821026
Abstract (en)
[origin: US4634224A] The correction filters which are used in manufacturing the structure of phosphor areas on the screens of color picture tubes are made more effective by being silvered or aluminized and provided with optical antireflection coatings. Owing to the resulting reduction of both the exposing and the cooling times, the number of lighthouses required for a certain production volume can likewise be reduced.
IPC 1-7
IPC 8 full level
H01J 9/227 (2006.01)
CPC (source: EP US)
H01J 9/2273 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0107181 A2 19840502; EP 0107181 A3 19870506; EP 0107181 B1 19890607; CA 1239438 A 19880719; DE 3239559 A1 19840426; DE 3380045 D1 19890713; JP S5952507 B2 19841220; JP S5994327 A 19840531; US 4634224 A 19870106
DOCDB simple family (application)
EP 83110460 A 19831020; CA 439630 A 19831025; DE 3239559 A 19821026; DE 3380045 T 19831020; JP 19840583 A 19831025; US 54482783 A 19831024