Special Features:

At +25 degrees c dominant vavelength 585 namometer, photopic transmittance normal to face of filter 4.7%, transmittance tolerance 1-20t, nvis randiance >or =1/4x10-11, free of surface flaw, antireflective front surface, salt-fog atmosphere 5% 95 degrees f 48 hrs, operating temp -40/+55 c, 100% humidity, non-nutrient to fungus, fire resistant, glass and plastic composition

Properties:

An item having two plane-parallel surfaces and consisting of a polarizing material bonded between glass or plastic. This item transmits light in only one plane and is usually used in pairs to vary the light transmitted into or through an optical instrument. Excludes window, optical instrument.