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blue light

High energy visible (HEV) light in the larger context of categorized electromagnetic radiation.

“Blue Light” Redefined: Eyesafe Collaborates with The Vision Council and ANSI on New Standard

The ANSI Accredited Standards Committee (ASC) Z80 Spectral Bands Task Force was formed in April 2021 to develop terminology/nomenclature for the spectrum of radiation between 380 – 500 nanometer (nm), commonly referred to as “blue light”. The task force included The Vision Council and American Optometric Association, as well as Johnson and Johnson MedTech, Essilor Luxottica, Zeiss, Alcon, Eyesafe, and others. The task force agreed High Energy Visible (HEV) light would be the nomenclature describing the overarching band of radiation between 380 – 500 nm and identified three sub-bands within HEV: 380 – 400 nm (HEV 3), 400 – 455 nm (HEV 2), and 455 – 500nm (HEV 1).

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