Based on the human eye's perception: equal powers of green 532nm light is 20 times brighter than blue 450nm light, 8 times brighter than red 650nm light, and 190 times brighter than purple 405nm light.
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405NM Violet/Purple laser @5mW, 50mW, 100mW, 200mW
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Big & Best Quality Green/Blue/red/violet Laser Pointer A General offer
5 in 1 Middle Open 405nm Violet Laser Pointer Kaleidoscopic Pen 5mW...
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