The verdict
A solid evening lens. It blocks 98% of body-clock light, but 11 lenses block more, and under a warm 2700K bulb about 2% still gets through.
Enough for the last hour before bed under dim, warm light. Under bright overhead LEDs late at night, a red lens blocks more.
Sleep strength
Strong
98% melanopic blocked
#12 of 61 lenses
Clarity
Dark
24% of visible light passes
#49 of 61 lenses
Tint
Strong red
Blocks below 586 nm
Colors look warm and muted
Red + near-IR
Passes
91% of 600 to 950 nm
Long wavelengths get through
Under your lights
Pick a light to see what the lens lets through.
How the world looks through it
Drag the handle. Left of the line is through the lens.
With lensWithoutSimulated from the lens's measured color. A lens that blocks blue and green darkens cool colors and keeps warm ones.
Where it ranks
All 61 lenses. Up blocks more body-clock light, right is clearer. The best tradeoffs sit on the green line. Tap any dot.
Beat it on both
Block more and look clearer.
BlockBlueLight NightFall98% · 38% · $40BioSpectral Systems Night99% · 26% · $160