| US 7,500,896 B2 | ||
| Method of manufacturing a fluorescent lamp having getter on a UV reflective base coat | ||
| Charles Trushell, Manhattan, Kans. (US); and Liviu Magean, Morgantown, W. Va. (US) | ||
| Assigned to Koninklijke Philips Electronics N.V., Eindhoven (Netherlands) | ||
| Filed on May 09, 2005, as Appl. No. 11/124,990. | ||
| Application 11/124990 is a division of application No. 10/017360, filed on Dec. 14, 2001, granted, now 6,919,679, filed on Jul. 19, 2005. | ||
| Prior Publication US 2005/0197035 A1, Sep. 08, 2005 | ||
| Int. Cl. H01J 9/20 (2006.01); H01J 61/35 (2006.01) | ||
| U.S. Cl. 445—26 [313/489] | 6 Claims |
| 1. A method of manufacturing an electric lamp comprising:
forming an aqueous suspension of a non-fluorescent oxidic material;
adding a water soluble getter precursor to the aqueous suspension to form a mixture;
forming a first coating on an inner wall surface of a lamp envelope with the mixture;
drying the first coating to form a single UV light reflective layer;
forming a second coating of a luminescent material over the dry first coating; and
sintering the first and second coatings to form an undercoat layer on the inner wall surface, the undercoat layer consisting
of aluminum oxide and zinc or alkaline earth metal oxide.
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