Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1980-04-28
1983-05-03
Cooper, Jack
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
2523014R, C09K 11475, H01J 163, H01J 2920
Patent
active
043822070
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 of 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: 3595803 (1971-07-01), Dugger
patent: 3597365 (1971-08-01), Ward
Blasse et al, I, "Philips Res. Repts.", 21, pp. 368-378, 1966.
Blasse et al, II, "The Journal of Chem. Phys.", vol. 51, No. 8, pp. 3252-3254, 1969.
Blasse et al, III, "The Journal of Chem. Phys.", vol. 47, No. 6, pp. 1920-1926, 1967.
de Meester Emiel P. J.
Jan Verstegen Judicus M. P.
Van de Spijker Willebrordus H. M. M.
Verlijsdonk Johannus G.
Verriet Johannes G.
Cooper Jack
Spain Norman N.
U.S. Philips Corporation
LandOfFree
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.
Profile ID: LFUS-PAI-O-1210049