Lamp envelope having an interior coating of luminescent...

Details Lamp envelope having an interior coating of luminescent... Lamp envelope having an interior coating of luminescent...

H - Electricity

01

J

117/16

H01J 1/63 (2006.01) C09K 11/02 (2006.01) H01J 9/22 (2006.01) H01J 61/46 (2006.01)

Patent

CA 1271371

ABSTRACT Heavy weights of luminescent material; e.g., from 0.0087 to 0.010 g/cm2, can be applied and adhered to the interior surface of lamp envelopes by mixing with the material up to 20% by weight boric acid. The material and boric acid are applied by electrostatic deposition and the envelope containing the material is then heated to a temperature of at least 300° C to convert the boric acid to boron anhydride. The envelope is subsequently cooled and employed with a light source capsule to form a lamp.

448318

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