Independent lab test · BS EN ISO 12312-1
Night Lens
of blue light — measured by an independent lab on a calibrated Topcon spectrophotometer. Below is the full test sheet, and exactly how to read it.
Blue light blocked
99%
UV-B reaching you
0.00%
EN ISO 12312-1
PASS
Filter category
2
1
2
3
🔍 Tap to zoom
The line that matters: Tsb (380–500 nm). The sheet reads 0.36% transmitted — 99.6% of the blue band never gets through. We claim 99%.
Tsuvb (280–315 nm): 0.00% — no UV-B reaches your eyes. Filter category 2: the deepest tint in the system, made for the hour before sleep.
The transmittance curve stays at zero far beyond the blue band, only rising after ~600 nm — exactly when blue light does the most to keep you awake.
What this means
The Night Lens is our deepest filter, for the hour before sleep. Independent testing shows it blocks 99% of blue light — the sheet reads 99.6% — exactly when blue light does the most to keep you awake, protecting your natural rhythm.
It also blocks 100% of UV-A and UV-B and passes EN ISO 12312-1, the international standard for lens transmittance and safety. Real protection has a color.
Wavelength · Independently lab-testedBS EN ISO 12312-1:2013+A1:2015 · 280–780 nm