| 摘要 |
An improved light fixture lumenaire having a diffractor-diffuser system optimized for use with multi-lamp lumen packages including high-efficiency fluorescent bulbs. The diffractor has a profile defined by first, second and third parabolic segments, and continuously tapering facets for improved lighting performance. Different diffuser geometries are provided to generate differing light distribution patterns, including a conical diffuser, and a diffuser having a fresnel lens portion and an angled flange portion. Equal numbers of facets and/or facets of similar geometrical profile may be provided on the diffuser and on the diffractor.
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