500mw Laser With Red Light
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500mw Laser With Remote Control 500mw Laser With Scope 500mw Laser With White 500mw Laser Supply Service 500mW Laser Speed Detector
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$123.81 $123.81
$129.68 $116.71
$54.90 $39.91
The more the beam diffuses, the shorter the dangerous distance. For example, for a 0.99 mW 555 nm green laser indicator with 1 milliradian beam expansion, the above number is divided by 2 to find the visual interference distance. Green is the most obvious color of the human eye. Compared with other colors of the same power, it looks brighter and more distracting. For red, divide the number by about 5 to get the approximate value of visual interference distance. For blue, divide the number by about 20.