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Light + Health

Light + Health, Products + Technology

Product Monday: Category Growth For Artificial Skylights With “Sun”

The first company to produce an artificial skylight with a sun moving across a blue sky was CoeLux. The Italian company sprang from research by Founder, CEO, and scientist Prof. Paolo Di Trapani, in 2009. See image above. More information here. Since then, other companies have jumped into the category. Innerscene launched it’s first virtual [...]

Craig’s Lighting Articles, Interviews + Opinion, Light + Health

Interview: A New Method for Evaluating Circadian-Effective Lighting

For an upcoming article for Electrical Contractor Magazine, I recently had the opportunity to interview Mariana G. Figueiro, PhD, Director of the Light and Health Research Center (LHRC) and Professor in the Department of Population Health Science and Policy at the Icahn School of Medicine at Mount Sinai, and Professor Mark S. Rea. The topic: a new methodology (called SOWatt), which specifiers could use to evaluate the relative energy efficiency of luminaires in delivering circadian-effective light.

Light + Health, Products + Technology

Product Monday: Touchless Switches With Microban Surface

radiant Wave Switch by Legrand. Image: Legrand. Legrand now offers touchless Wave Switches to reduce the spread of germs. Wave Switches allow users to turn lights (or small motors) on and off with a simple wave of their hand. Wave Switches install easily in place of an existing switch to offer clean and convenient control [...]

Legislation + Regulation, Light + Health

Mexico Ends Summer Time Changes

In October 2022, the Mexican government passed a law ending seasonal clock changes that the Mexicans call “Summer Time” and the U.S. calls “Daylight Savings Time.” This March, most of Mexico did not ‘Spring forward,’ and are now in a permanent Standard Time. Similar legislation has been passed by the U.S. Senate, but has not [...]

Light + Health, Research

Important New Research Shows Light Therapy Could Reduce Heart Disease

Researchers at the University of Buffalo have published a study demonstrating that light therapy reduces heart disease in mice. If these results hold true in human trials, this could be an extremely important finding. Heart disease is the #1 cause of death in the U.S. One in five Americans dies of heart disease. A simple, [...]

Light + Health

Circadian Light Therapy Helps Bipolar Patients In Scandinavia

Scandinavian countries have greater acceptance of circadian light therapy for psychological disorders. A hospital in Norway, Valen Hospital, has incorporated circadian light therapy into the emergency treatment of bipolar patients with positive results. Chromaviso is a Danish manufacturer of circadian lighting and light therapy luminaires. The Valen Hospital results have been peer-reviewed and published in [...]

Light + Health, Research

Aging Retinas Receive 86% Less Blue Light Compared To Children

New research from the University of Zaragoza in Spain quantifies how the aging eye restricts the amount of circadian light reaching the retina based on photopic illuminance reaching the corneal plane and considering the optical density of an aging crystalline lens. As the researchers state: “As a result of the described behavior, retinal illuminance may [...]

Education + Resources, Light + Health

Innovators in Residential Healthcare: Circadian Principles & Practice

Dr. Shelly James, Founder of Age of Light Innovations Group, is hosting a webinar, Innovators in Residential Healthcare: Circadian Lighting Principles & Practice, to share best practices in circadian lighting for residential healthcare facilities. Current research suggests that lighting that actively supports a robust day-night (or ‘circadian’) cycle in older people with dementia can significantly [...]

Agriculture, Light + Health

Product Monday: NanoLambda Ultra Compact Bluetooth Spectroradiometer

The XL-500 Meter by NanoLambda is an ultra-compact, wearable, wireless battery-operated Spectral Power Distribution or Spectroradiometer (SPD) measurement tool. It uses Bluetooth to upload data and has an internal memory to store over 8,000 measurements on a single battery charge. It captures 340-1,010 nanometer wavelengths in a single reading. The device is groundbreaking in its small [...]

Legislation + Regulation, Light + Health

Canada Proposing To Ban HID Lamps In Addition To Fluorescent

Kudos to Al Uszynski of for breaking this story about the Canadian government’s proposal to ban the sale of most mercury-containing lamps. Fluorescent lamp bans are already occurring in California and Vermont, and are under consideration in other US states. The Canadian proposal goes significantly further, to ban most HID lamps. It’s noteworthy that [...]


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