NightLens Blue Light Blocking Glasses
BlockBlueLight offers the best balance of clinical-grade spectrum accuracy and affordability. Their NightLens is specifically designed to block 100% of blue and green light up to 550nm, backed by accessible spectral analysis reports.
Ingredients & Purity
Uses lightweight polycarbonate or acetate frames with CR-39 lenses for their premium ranges. Lenses are specifically tinted to remove the entire sleep-disrupting spectrum.
Scientific Evidence
Internal and third-party testing confirms 100% blockage of the 400nm-550nm range, which is the gold standard for nighttime circadian support.
Brand Transparency
Extremely transparent; they provide a 'Spectrum Report' PDF directly on the product page.
Value Assessment
Excellent value. You get the same spectral protection as $150 glasses for nearly half the price.
Why Not Alternatives?
They outperform Swanwick in transparency by providing actual lab-grade spectrum reports, while remaining significantly cheaper than Ra Optics or Bon Charge.