SHINU Women FL-41 Glasses FL41 Tint Glasses man, 480-520nm Blue Light Blocking Lenses Office Fluorescent Light Migraine Eyewear
SPECIFICATIONS
Blue Light Blocking Rate: 20%-90%
Boxes Included: Yes
Brand Name: UOOUOO
Certification: CE
Element type: Basic Classic
Frame Material: Plastic Titanium
Gender: Women
High-concerned chemical: none
Lens Height: 44MM
Lens Width: 52MM
Lenses Material: Polycarbonate
Model Number: SH005FL
Origin: Mainland China
Place Of Origin: China (mainland)
Style type: Rectangle
blue light blocking glasses: blue light blocking glasses
blue light blocking glasses vintage: blue light blocking glasses vintage
computer glasses: computer glasses
lens: blue light lens
1. Why 480–520nm Light Irritates Eyes
Human eyes have rods (night vision) and cones (color & detail).
In early 2000s, scientists found ipRGCs, a third light-sensing cell. It carries melanopsin, highly sensitive
to 480–520nm cyan-green light. Too much light in this band triggers glare and eye discomfort from LEDs,
fluorescent lights and sunlight.
2. Where FL41 Comes From
FL41 stands for Fluorescent Light Formula 41, created in late 1980s by Professor Arnold Wilkins in Birmingham,
UK. Old office fluorescent lights flicker invisibly with strong 480–520nm spectrum, causing eye strain for
workers. After many trials, his 41st rose-tint lens formula perfectly filters harsh fluorescent light, named FL-41.
3. How FL41 Lenses Work
Originally made for office eye fatigue relief.
FL41 rose lenses block irritating 480–520nm cyan-green light and cut glare from screens, lamps and sun.
Different from dark sunglasses, it stays transparent indoors without dim vision, also softens harsh outdoor
light for office, study and daily outdoor use.
Please check the size before your order, this is very important.
C2 Clear Frame
C3 Clear Grey Frame
C4 Black Frame
