Efficiency Regulations Should Balance Color Fidelity with Luminous Efficacy


Researchers Konstantinos Papamichael, Michael Siminovitch, Jennifer A. Veitch, and Lorne Whitehead argue that CRI is the proper metric for use today as a complement to efficacy in SSL regulatory policy. 

The four scientists write with deep concern regarding the November 2016 article by respected colleagues, Mark Rea and Jean Paul Freyssinier, entitled “CRI should never be used in efficacy regulations but a new lumen definition should” (

Residential Lighting Guide for 2016 Building Energy Efficiency Standards

Residential Lighting Guide for 2016 Building Energy Efficiency Standards

The California Lighting Technology Center’s 2016 Residential Lighting Guide assists builders and lighting industry professionals in navigating the residential lighting portion of California’s Building Energy Efficiency Standards (Title 24, Part 6). California's new residential Building Energy Efficiency Standards take effect on January 1, 2017.

IES LD+A Research Matters: G24 Lamps - A New Niche for LEDs


Today’s LED lighting products offer facility owners and managers an opportunity to reduce their lighting system’s power consumption dramatically.  However, the options for updating four-pin (G24) CFL lamps to LED solutions were limited to retrofit kits or new dedicated fixtures until recently.  Over the last few years, manufacturers have improved and developed a cross-section of LED retrofit options including LED replacement lamps that should all be considered when conducting a lighting upgrade.

Researchers Awarded IES Taylor Technical Talent Award for Color Quality Research


Professors Michael Siminovitch and Konstantinos Papamichael of the California Lighting Technology Center, with Dr. Lorne Whitehead of the University of British Columbia and Dr. Jennifer A. Veitch of the National Research Council, Canada have been awarded the 2016 Taylor Technical Talent award from the Illuminating Engineering Society for their research article, “High Color Rendering Can Enable Better Vision without Requiring More Power”.

IES LD+A Research Matters: Next Generation Healthcare Lighting


Three key elements of emerging healthcare lighting design are circadian wellness, dark adaption, and a high-fidelity visual environment for patient care. Solid-state lighting solutions with spectral control capabilities can be seamlessly integrated into healthcare lighting designs using advanced controls and sensor geometry to create a patient-friendly experience. For patients who need to sleep during the day, these technologies can be manually enacted, along with appropriate window shading, to create a nighttime environment at any hour.

OLED Lighting Workshop, May 2016


On May 17, 2016, the OLED Coalition and California Lighting Technology Center collaborated to host the first OLED Lighting Workshop. Leaders in lighting design and manufacturing gathered to mold the future of OLED lighting. Stakeholders in attendance articulated their needs and ideas for maximizing the potential of OLED technology in today’s market.