Lighting System that Reduces Environmental Light Pollution

摘要

A lighting fixture that minimizes light pollution in the blue frequencies of the visible spectrum. The lighting fixture contains a plurality of LEDs in an array. The array emits light with a first spectral profile. Most of the LEDs in the array have a correlated color temperature of between 2200K and 6500K, with a preferred value under 5000K. The light from the array passes through a filter. The filter removes much of the fractals of light between 400 nm and 500 nm so that the fractals between 400 nm and 500 nm account for no more than two percent of the overall intensity of the light. However, the filter decreases the intensity of light between 550 nm and 750 nm by no more than ten percent. This produces a light fixture that is highly energy efficient, has a high CRI index, and emits very low levels of light in the blue wavelengths of the spectrum.

主权项

1. A lighting fixture, comprising:
a plurality of LEDs in an array, wherein said array emits light with a first spectral profile, wherein most of said LEDs in said array have a correlated color temperature of between 2200K and 6500K; a filter designed to primarily filter a blue light range between 400 nm and 500 nm, wherein said filter is mounted proximate said array and said light in said first spectral profile passes through said filter, therein producing filtered light in a second spectral profile.