The Alexandrite/Diode High Light Transmission is a laser safety lens made of blue BG38 glass filter. It is cut and mounted into model 300, black nylon frame. The frame features extendable temple arms to give you that perfect fit.
OD>2+ from 632nm
OD>3+ from 650-690nm
OD>6+ from 690-1000nm
VLT = 55.5%
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