The BG39+ laser safety lens have a glass light blue lens filter that provides laser protection. These laser lens have visible light transmission of 64%. In addition, the BG39+ laser safety lens have ANSI Z87.1 and ANSI Z136.1 safety standards.
OD @ WAVELENGTH :
OD 7+ @190-320nm OD 7+ @675-765nm OD 10+ @765-1050nm OD 10+ @1050-1300nm OD 10+ @3050-5200nm