Archive for the ‘Research’ Category

DOE Publishes GATEWAY Report on OLEDs in an Office Space

The Department of Energy’s GATEWAY program recently published a new report on a project prominently featuring OLED lighting at the Rochester, NY offices of DeJoy, Knauf & Blood, LLP, an accounting firm. One of the firm’s founding partners, David DeJoy, is also co-founder and CEO of OLEDWorks, the only US-based OLED manufacturer. Among the key […]

Norma Frank on Maintaining Streetlighting

Norma Frank, CLMC recently contributed a maintenance column to LD+A that talks about LED streetlighting maintenance. Traditionally, HID luminaires are cleaned when they are relamped, limiting light loss imposed by luminaire dirt depreciation (LDD). As stated above, LED luminaires promise much longer service life. They may present a different failure mode based on output rather […]

CSIL: U.S. Luminaire Market $12.9 Billion in 2016

CSIL recently published the 2017 edition of its report, The Lighting Fixtures Market in the United States. Running about 200 pages, the report covers market size and trend, international trade, distribution channels and reference prices, market segmentation and product characteristics, financial key indicators, sales data, short profiles and market shares of the major local and […]

2015 RECS Shows Energy-Efficient Lighting Adoption in Homes

Produced by the Department of Energy’s Energy Information Administration (EIA), the 2015 Residential Energy Consumption Survey (RECS) shows growing adoption of energy-efficient lighting in homes. The 2015 RECS shows that a majority of U.S. homes feature more than one type of lamp, primarily a mix of incandescent and CFL. But LED adoption was growing, with […]

IES Publishes Research on LED LDD

LED area and roadway lighting promises energy and maintenance cost savings, but the longevity of the LED light source presents a hitch. Traditionally, luminaires are cleaned upon relamping. If relamping does not occur, dirt buildup becomes a more important maintenance factor. That being said, it is claimed LED luminaires are less prone to dirt accumulation. […]

2017 Lighting Outlook

tED Magazine recently published a lighting supplement that featured a 2017 Lighting Outlook, based on surveys conducted by the magazine and LightNOW of lighting manufacturers, electrical distributors and electrical contractors. The results show a positive outlook for the year among all three market segments (example manufacturer results shown below). Click here to check it out.

DOE Publishes CALiPER Snapshot on LED Industrial Luminaires

The U.S. Department of Energy’s CALiPER program has released a new Snapshot Report on LED industrial luminaires, based on DOE’s Lighting Facts database. Key findings: • The efficacy of LED industrial luminaires is notably higher than what’s typical of their incumbent counterparts. About 23% of the industrial luminaires listed with LED Lighting Facts listed products […]

Color Study Challenges CRI

My contribution to the April issue of ELECTRICAL CONTRACTOR presents TM-30, the proposed method for evaluating color rendering and saturation, and describes a recent study that suggests saturation is critical to truly evaluating color quality. Specific gamut shapes may be critical to modeling human color preference. The study found that Rf is a good predictor […]

First Photograph of Light as a Particle and a Wave

Quantum mechanics tells us that light behaves as both a particle and a wave, and scientists have tried to observe both aspects at the same time. In 2015, scientists at the Federal Institute of Technology in Lausanne in Switzerland achieved a snapshot capturing both properties. Learn more here.

Flicker May Play Future Role in Fight Against Alzheimer’s

Researchers have discovered that pulsing light reduces toxic proteins associated with Alzheimer’s disease in laboratory mice, raising hopes of future application to humans. Click here to learn more.