Craig DiLouie

The U.S. Census Bureau of the Department of Commerce recently announced that construction spending during October 2015 was estimated at a seasonally adjusted annual rate of $1,107.4 billion, 1% (±1.8%) above the revised September estimate of $1,096.6 billion. This figure is 13% (±2.5%) above the October 2014 estimate of $979.6 billion. During the first 10 [...]

CIE, the global lighting organization that maintains the CRI standard, is now studying TM-30: The CIE recognizes that the colour fidelity metrics including the CRI do not assess other important aspects of the colour qualities of light sources, in particular, those related to colour preference. CIE TC 1-91 is developing a Technical Report on this [...]

Gigahertz-Optik’s hand-held, spectrometer-based Photosynthetically Active Radiation (PAR) meter provides PAR, illuminance, color and spectral data to fully analyze any type natural and electric light source, including SSL/LEDs employed in plant growth applications. The BTS256-PAR measures PAR PPFD (µmol/(m²s), R/FR red to far red irradiance ratio, DLI daily light integral (time resolved with data logger) and [...]

The National Electrical Manufacturers Association (NEMA) responded to IES TM-30-15 with NEMA LSCR-PP 1-2015 Light Source Color Rendition. The Illuminating Engineering Society (IES) recently published TM-30-15 IES Method for Evaluating Light Source Color Rendition. NEMA has produced a position paper, Light Source Color Rendition, in response to this document. Mark Lien, chair of NEMA Light [...]

The Illuminating Engineering Society (IES) honored the finalists of the 2015 IES Illumination Awards and presented IES Society Awards for Technical and Service Achievement at the IES Annual Conference in Indianapolis, IN November 8 – 10. The IES Illumination Awards included five Awards of Distinction, ten Awards of Excellence, and four Special Citations. The Awards [...]

USAI Lighting recently published an interesting article about circadian lighting on its website. This is a big frontier in lighting, with extraordinary potential. Check it out here.

I recently had the pleasure of interviewing Mark Lien LC, CLEP, CLMC, HBDP, LEED BD&C, Director of Government and Industry Relations at OSRAM SYLVANIA and chair of NEMA Light Source Section. The topic: IES-TM-30, which proposes a new method of color evaluation, including new metrics to express color fidelity and saturation. I’m happy to share [...]

I recently had the pleasure of interviewing Jerry Mix, CEO of Finelite. The topic: LED suspended general lighting. I’m happy to share his responses with you here. The interview informed an article I wrote coming up in the February 2016 issue of tED. DiLouie: How would you characterize the market for suspended general lighting luminaires? [...]

Recently recognized in the 2015 IES Progress Report, OSRAM ULTRA LED™ MR16 lamps are designed to offer true halogen-equivalent lamps in terms of lumen output and center beam candlepower. When replacing halogen lamps, these LED lamps generate up to 82% energy savings. Designed to replace 20W-50W halogen products, ULTRA LED MR16 lamps use 6, 8 [...]