Cool white lamp using a two-component phosphor

Details Cool white lamp using a two-component phosphor Cool white lamp using a two-component phosphor

H - Electricity

01

J

117/22, 313/81

H01J 61/44 (2006.01) C09K 11/76 (2006.01) C09K 11/77 (2006.01) H01J 61/35 (2006.01) H01J 61/48 (2006.01)

Patent

CA 1131287

- 8 - ABSTRACT OF THE DISCLOSURE A fluorescent lamps having chromaticity coordinates similar to cool white can be prepared using two component compositions. A blue emitting strontium-barium chlorapatite activated with europium and a yellow emitting calcium-stron- tium fluorapatite applied as a blend or as two distinct layers yields a lamp equivalent in chromaticity to a stan- dard cool white lamp with a higher lumer per watt than the standard cool white lamp. D-22,298

354244

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