Achieving uniform efficient illumination with multiple asymmetric compound parabolic luminaires

J. M. Gordon, Peter Kashin

    Research output: Contribution to journalConference articlepeer-review


    Luminaire designs based on multiple asymmetric nonimaging compound parabolic reflectors are proposed for 2-D illumination applications that require highly uniform far-field illuminance, while insuring maximal lighting efficiency and sharp angular cutoffs. The new designs derive from recent advances in nonimaging secondary concentrators for line-focus solar collectors. The light source is not treated as a single entity, but rather is divided into two or more separate adjoining sources. An asymmetric Compound Parabolic Luminaire is then designed around each half-source. Attaining sharp cutoffs requires relatively large reflectors. However, severe truncation of the reflectors renders these devices as compact as many conventional luminaires, at the penalty of a small fraction of the radiation being emitted outside the nominal cutoff. The configurations that maximize the uniformity of far-field illuminance offer significant improvements in flux homogeneity relative to alternative designs to date.

    Original languageEnglish
    Pages (from-to)27-37
    Number of pages11
    JournalProceedings of SPIE - The International Society for Optical Engineering
    StatePublished - 1 Nov 1993
    EventNonimaging Optics: Maximum-Efficiency Light Transfer II 1993 - San Diego, United States
    Duration: 11 Jul 199316 Jul 1993

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering


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