William E. Ishler - Lyndhurst OH William B. Weber - Willoughby Hills OH Livio L. Giudici - Novelty OH
Assignee:
General Electric Company - Schenectady NY
International Classification:
H01J 548 H01J 550
US Classification:
313318
Abstract:
A lamp unit having a housing containing a ballast and provided with a screw base. The base fits over an end of the housing and is attached thereto by a low-cost resin material which, in cooperation with shaped contours on the housing and the base, mechanically locks these parts together.
Mary S. Kaliszewski - Cleveland Heights OH William E. Ishler - Lyndhurst OH
Assignee:
General Electric Company - Schenectady NY
International Classification:
H01J 6304 H01J 162
US Classification:
313489
Abstract:
A protective layer or precoat of a metal oxide for an internal conductive layer in a rapid-start fluorescent lamp is formed of yttria, ceria or silica to suppress the occurrence of localized appearance defects referred to as measles. The protective layer may be used in combination with conductive layers having a uniformly flat profile or a U-shaped bathtub profile to further enhance the suppression of measle defects. The lamp retains the desirable qualities of good startability and energy efficiency while at the same time avoiding the undesirable measle appearance defects.