Light + Health

Legislation + Regulation, Light + Health

FDA Denies Soft Lights Petitions On LED Safety – What’s Next?

On May 24, 2024, the FDA denied all Soft Lights Foundation petitions to regulate LED products, in a letter. According to The Soft Lights Foundation website, “The decision by the FDA to not regulate LED products and to not collaborate with any other federal agency illegally pushes regulation of LED products onto state and local governments.” As [...]

Codes + Standards, Light + Health

RP-46 Published: Physiological & Behavioral Effects of Light

  IES has published ANSI/IES RP-46-23, Recommended Practice: Supporting the Physiological and Behavioral Effects of Lighting in Interior Daytime Environments. It is designed to be a companion to IES TM-18, translating the basic science of how light affects visual, circadian, neuroendocrine, and neurobehavioral responses in daytime interior environments, such as schools and offices. This recommended practice (RP) [...]

Light + Health

Alternative Circadian Theory Of Blue-Yellow Opponency

  I watched the virtual presentation, Better Than Blue Light, by Dr. Jay Neitz of the University of Washington last week that was presented by LEDucation. I’m not an expert on Light + Health, but I’ll try to explain it as best I can. Dr. Neitz claims that particular combinations of blue and yellow light [...]

Codes + Standards, Light + Health

A Summary Of WELL Building Standard Version 2.0 Lighting Requirements

Here is a summary of the WELL Building Standard Version 2.0 Lighting Requirements: Feature L01: Light Exposure – Provide indoor light exposure through daylight and electric light strategies. Option 1: Daylight simulation The project demonstrates, through computer simulations, that one of the following conditions are achievedOption 2: Interior layout One of the following requirements is [...]

Energy + Environment, Light + Health

First Town In The World Adopts Red Street Lights

    A small town in the Netherlands, Zuidhoek-Nieuwkoop, has become the first town in the world to install red street lights. The primary motivation was to protect local, rare bat populations. The red light isn’t perceived by the bats but allows humans to see at night. The red street lights are manufactured by the [...]

Light + Health, Products + Technology

Product Monday: Two Lighting Product Launches At CES 2024

  CES 2024 concluded last week, in Las Vegas, NV. While every imaginable type of tech was there, there were some lighting product releases. Here are two of them: NanoLeaf released its Sky Expansion Pack. See first two images. This NanoLeaf Skylight is designed to look and feel like a skylight. By replicating a dynamic [...]

Light + Health

Walmart Turns Down Lights And Changes Morning Hours For Sensory Disabled

  During the Summer of 2023 back-to-school season, Walmart piloted sensory-friendly store hours, each Saturday from 8am-10am. During these hours, Walmart stores turned down the lights where possible, put a static image on the TV walls, and turned off the radio. Walmart received overwhelmingly positive responses. As a result, Walmart has now designated 8am-10am every [...]

Light + Health, Products + Technology

Exploring The World Of <2% Blue Light

  I researched for hours trying to get a complete picture of the origins, drivers, products, and claims around “less than 2% blue light.” As long as 6 years ago, Circadian Zirclight claimed their office products switched from conventional blue pump white LEDs during the day, to violet pump white LEDs in the evening for [...]

Legislation + Regulation, Light + Health

28 States Have Bills To End Seasonal Time Changes

  In the absence of Federal government action, lawmakers in 28 states have proposed legislation to end seasonal time changes each Fall and Spring. In March, 2022, The U.S. Senate passed a bill to make Daylight Saving Time permanent. The bill went nowhere in the House, and has made no apparent progress in the past [...]

Light + Health, Lighting Design

Nebraska Children’s Hospital Lighting Design Lets Kids Be Kids

  I’m pleased to share my first article published in the October issue of Lighting Design + Application (LD+A), the magazine of the Illuminating Engineering Society (IES). Children’s Hospital & Medical Center, the only dedicated children’s hospital in Nebraska, had outgrown its facility in Omaha and was on the verge of turning away patients in [...]


Lightovation – Dallas Market Center
IALD Enlighten Europe
IES 24 – The Lighting Conference
ArchLIGHT Summit
American Lighting Association Annual Conference
Click For More


Colonial Electric – Inside Sales -Remote.