Cathode-ray tube provided with a luminescent silicate
AssigneeU.S. Philips Corporation
InventorRoelof Egbert Schuil
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Abstract
A cathode-ray tube particularly for flying spot scanners, provided with a luminescent silicate activated by cerium, defined by the formula Li.sub.1-x Na.sub.x Y.sub.1-p Ce.sub.p SiO.sub.4, in which 0 .ltoreq. x .ltoreq. 0.90 and 0.0001 .ltoreq. p .ltoreq. 0.25, which silicate has the olivine crystal structure.
Claims3
A cathode ray tube for flying spot scanners, said cathode-ray tube being provided with a faceplate coated with a luminescent layer comprising a luminescent silicate having the olivine crystal structure, said silicate being activated by trivalent cerium and having the formula Li.sub.1.sub.- x Na.sub.x Y.sub.1.sub.- p Ce.sub.p SiO.sub.4 wherein 0.50 <
- x <
- 0.80 and 0.0001 .ltoreq. p .ltoreq. 0.25 and means to produce an electron beam to excite said silicate to luminescence.
Dependencies are inferred from the claim text.