The SFP laser safety lens have a polycarbonate purple lens filter that provides laser protection. These laser lens have visible light transmission of 27.2%. In addition, the SFP laser safety lens have ANSI Z87.1 and ANSI Z136.1 safety standards.
OD @ WAVELENGTH :
OD 7+ @190-390nm OD 5+ @589-600nm OD 6+ @592-597nm