the limited adoption of the highest efficacy lamps

Since lamps that meet consumer color quality expectations will provide significantly more energy savings than the limited adoption of the highest efficacy lamps; manufacturers, designers, academics, and LED high bay light utilities strongly recommended that EPA provide some easement for the luminous efficacy targets of high CRI LED Lamps, which are fundamentally more challenging than low CRI products. Specific proposals were submitted to the EPA last week.

“Fundamental physics research shows that there is a ~2% penalty in luminous efficacy per point of CRI. So, going from a CRI of 80, where most LEDs operate, to a CRI of 90, there is a ~20% penalty in lm/W,” said Dr. Shuji Nakamura, Professor of Materials Department and Co-Director for the Solid State Lighting & Energy Center at the University of California, Santa Barbara.

Researchers from Boston University have invented a unique way of using LED lights to transmit location information to mobile devices within buildings.

Researchers Dan Ryan and Aaron Ganick’s start-up, ByteLight, is based entirely around proprietary software that can accurately map the inside of buildings using only LED lighting to transmit location information.