Luminescent material and discharge lamp containing the same

Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2523014R, C09K 11463

Patent

active

044410492

ABSTRACT:
A luminescent screen provided with a luminescent material having the hexagonal crystal structure, which material is an aluminate, a gallate or an aluminate gallate. The crystal structure of the luminescent material corresponds to that of at least one of the compounds .beta.-aluminium, .beta."-alumina and the hexagonal ferrites. The luminescent material is activated by at least one of the elements manganese, europium, lead, thallium, cerium, indium, terbium, dysprosium and bismuth and is a ternary compound whose composition can be represented in the ternary phase diagram ABC in which A represents at least one of the oxides 1/4Na.sub.2 O, 1/2K.sub.2 O, 1/2Rb.sub.2 O, 1/2Cs.sub.2 O, CaO, SrO, BaO, 1/2La.sub.2 O.sub.3, 1/2Ce.sub.2 O.sub.3, 1/2Tb.sub.2 O.sub.3, 1/2Dy.sub.2 O.sub.3, 1/2Bi.sub.2 O.sub.3, EuO, PbO, 1/2Tl.sub.2 O and 1/2In.sub.2 O, in which B represents at least one the oxides Al.sub.2 O.sub.3 and Ga.sub.2 O.sub.3 in which up to 25 mol. % of the oxides denoted by B may be replaced by Sc.sub.2 O.sub.3 and in which C represents at least one of the oxides MgO, ZnO, BeO, 1/2LiAlO.sub.2 and 1/2LiGaO.sub.2. The content of A is more than zero and less than that of B and the content of C is more than zero and less than 0.6.

REFERENCES:
patent: 2590411 (1952-03-01), Isenberg
patent: 3597365 (1971-08-01), Ward
patent: 4088922 (1978-05-01), Wolfe
patent: 4246630 (1981-01-01), Wolfe

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Luminescent material and discharge lamp containing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Luminescent material and discharge lamp containing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Luminescent material and discharge lamp containing the same will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-669201

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.