The verdict
A maximum-strength sleep lens. It blocks 99%+ of body-clock light, the most of any lens I have tested, and under a warm 2700K bulb under 1% still gets through.
Strong enough even under bright overhead LEDs late at night.
Sleep strength
Maximum
99%+ melanopic blocked
#1 of 61 lenses
Clarity
Very dark
2% of visible light passes
#61 of 61 lenses
Tint
Strong red
Blocks below 651 nm
Colors look warm and muted
Red + near-IR
Mostly passes
74% 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
No lens I have tested blocks more and is clearer. This one sits on the best-tradeoff line.