Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1976-09-27
1978-08-29
Cooper, Jack
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
2523014R, C09K 1146
Patent
active
041106601
ABSTRACT:
Luminescent materials having a host of controlled amounts of barium oxide, controlled amounts of lithium oxide, and the balance aluminum oxide when activated by divalent europium alone yield a blue emission when excited by ultraviolet light and activated by europium in combination with divalent manganese yield a bright green emission under ultraviolet light. The host can be a solid solution of the foregoing oxides or it can contain alpha alumina and spinel as additional phases. These materials are used to produce lamps having enhanced emission characteristics as compared to lamps employing luminescent materials having a host of aluminum oxide in combination with barium oxide and activated by europium or europium manganese or to lamps employing magnesium gallate, activated by manganese.
REFERENCES:
patent: 3457184 (1969-07-01), Kobayashi et al.
patent: 3458451 (1969-07-01), Kobayashi et al.
patent: 3577350 (1971-05-01), Amster
patent: 3635833 (1972-01-01), Datta
patent: 3723339 (1973-03-01), Wanmaker
patent: 3856697 (1974-12-01), Verstegen et al.
Tamatani "Japanese Journal of Applied Physics" vol. 13, No. 6, pp. 950-956, 1974.
Blasse et al. "J. Electrochem Soc." vol. 115, (No. 6), p. 673, 1968.
Castle Donald R.
Cooper Jack
Fox John C.
GTE Sylvania Incorporated
O'Malley Norman J.
LandOfFree
Luminescent barium-lithium aluminate phosphors and lamp containi 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 barium-lithium aluminate phosphors and lamp containi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Luminescent barium-lithium aluminate phosphors and lamp containi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1635467