In its Jan/Feb 2010 issue, Architectural SSL published an article I authored about Round 9 of CALiPER testing (October 2009) covering 30 recessed downlights, 2×2 flat panel luminaires and troffers, 4-ft. linear replacement lamps and small replacement lamps.
Despite continuing problems in the SSL industry, including inaccurate and inflated sales claims and a wide range of discrepancy in performance, Round 9 testing revealed a few upsides. Efficacy continues its overall upward progression, doubling in the past two years among tested SSL fixtures and with these results suggestive of the market as a whole. Color quality is also steadily improving to more consistently achieve values within ANSI-defined norms for white light. And in some categories, such as downlights, 2×2 troffers and small-wattage replacement lamps, LED products are offering viable alternatives to traditional sources.
Check out the article here.
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