The narrow band of green light emitted by the Allay Lamp was discovered by migraine researchers at Harvard Medical School. It is a slim spectrum of visible light that only triggers one specific set of light-sensitive receptors in the eye.
These receptors react less strongly to light than others, sending a smaller, softer electrical signal that works to calm the brain.
Your phone, computer, and other devices show colors by displaying a combination of different bands of light. These combinations include blue, yellow and other wavelengths outside the narrow green spectrum that activate other receptors in your eyes, causing irritation.
The Allay Lamp only emits a pure narrow band (just 20nm!) of green light. Its light doesn't include yellow, blue or other colors like you'd see in a screen or smart bulb, making it uniquely pleasing to the eyes and brain.