Research

LED + SSL, Research

DOE Releases GATEWAY Report on LED Post-Top Lighting

The Department of Energy recently published the evaluation report from a GATEWAY demonstration in New York City’s Central Park, conducted in collaboration with The Climate Group and the New York City Department of Transportation. LED post-top luminaires from five different manufacturers were installed along paved walking trails and evaluated against the metal halide luminaires that [...]

LED + SSL, Research

Brilliant LED Concept Video

Summary of a research idea conceived at the Catalonia Institute for Energy Research, Lighting Group. This video explains the potential applications of a novel concept based on LEDs than uses a microprocessing unit to reproduce and read spectra in spaces. Ledmotive: brilliant innovation with LED technology from Josep Carreras on Vimeo.

LED + SSL, Research

University of Georgia Researchers Invent New Material for Warm White LEDs

University of Georgia researchers have fabricated an LED that emits warm white light using a single light emitting material (phosphor) with a single emitting center for illumination. “Right now, white LEDs are mainly used in flashlights and in automotive lamps, but they give off a bluish, cool light that people tend to dislike, especially in [...]

LED + SSL, Research

DOE Releases CALiPER 2012 Year in Review

The U.S. Department of Energy has released a CALiPER 2012 Year in Review report that summarizes recent testing results and provides an overview of multi-year trends, available here. Since its inception in 2006, the CALiPER program has tested more than 500 products, revealing a variety of performance trends, holding manufacturers accountable for claims, and identifying [...]

LED + SSL, Research

DOE Releases CALiPER Application Summary Report on LED PAR38 Lamps

The U.S. Department of Energy has completed Series 20 of testing through the DOE Solid-State Lighting CALiPER program, available here. Report 20 evaluates the independently tested photometric performance of 38 LED PAR38 lamps, with results showing significant improvement versus earlier CALiPER testing of similar products. All of the LED PAR38 lamps tested offer substantial energy [...]

Lighting Design, Research

IALD Survey Validates Domains of Practice for Architectural Lighting Designers

Independent of country of residence, the 637 building/design industry practitioners responding to the IALD Certification Survey indicate the seven domains of professional practice researched by the Credentialing Task Force accurately reflect the practice of architectural lighting design (average rating 4.1 out of 5) and are important to the profession (average rating 4.66). The primary purpose [...]

Research

Optical Illusions Reveal How We See

In this brilliant TED Talk, Beau Lotto explores the phenomenon of optical illusions and how the human eye sees objects and reality.

Research

Research: Blue Light Could Help Teenagers Combat Stress

Adolescents can be chronically sleep deprived because of their inability to fall asleep early in combination with fixed wakeup times on school days. According to the CDC, almost 70 percent of school children get insufficient sleep—less than 8 hours on school nights. This type of restricted sleep schedule has been linked with depression, behavior problems, [...]

Research

Milking Lighting

A 2010 Oklahoma State study comparing LED with conventional lighting in dairies showed a 6% increase in milk production under LED. The question is why, which is uncertain. One theory is the LED is more directed, possibly resulting in more feeding. Another is higher hormone production. IOWA FARMER has the story here.

Research

Exposure to Light Could Help Alzheimer’s Patients Sleep Better

Individuals with Alzheimer’s disease and related dementias (ADRD) often sleep during the day and are awake at night. The situation can turn life-threatening if they leave their homes and wander around outside. This irregular sleep schedule and night wandering, and the consequent burden on their caretakers, is a primary reason individuals with ADRD are placed [...]

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