专利名称：Lamp and reflector assembly发明人：Robert E. Levin,Lieven A. DeWeerdt申请号：US07/697828申请日：19910509公开号：US05272408A公开日：19931221
摘要：A lamp assembly includes a reflector having a concave reflecting surface and anaxis of rotation, and a light source including a filament mounted at or near a focal pointof the reflecting surface. The filament has a length to diameter ratio of 6:1 or greater.The reflecting surface is formed as a multiplicity of reflecting facets. The facets on atleast 50% of the reflecting surface have dimensions and curvatures selected to produce alight pattern wherein a ratio of filament width spread to filament length spreadproduced by the facets is at least 2:1. Preferably, the facets are arranged in axiallyadjacent rings. The facet rings can be successively offset in a rotational direction so as toreduce circumferential variations in the light pattern.
申请人：GTE PRODUCTS CORPORATION
代理机构：Wolf, Greenfield & Sacks
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