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Old 09-07-2019, 12:33 AM   #5840
Taro Pie
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Join Date: Apr 2015
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I've come up with some drawings to let more bros better understand what is UV/ Blue Block/ Blue Filter

Light Spectrum (Left side of chart being most harmful to humans):

Blue block lenses block up to 30% across whole blue spectrum (~400-500nm)

Blue filter blocks up to 94% of the high energy waves(up to 420nm), while letting the rest of beneficial blue light in.(~420-500nm)

disclaimer: straight lines are drawn to make it easier for me to draw :X Actual lines are not as straight as what is illustrated
Seems like filter lens is better, is there a reason why the big brands use blue coating instead?

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