Special Features:

Metallic thin film devices which provide a high degree of polarization in the near-infrared; consists of a vacuum deposited thin film made up of microscopic prolate metal shperoids all aligned in the same direction on the glass surface; useful field angle +/- 20 degrees about normal; surface quali type 80-50 scratch and dig; mounted between two glass discs, hermetically mounted in a black anodized aluminum ring; polarization plane of transmissionindicated by engraving on the edges; wavelength range is 780nm-1250nm; outside diameter is 40.0mm; clear aperture 35.0mm

Properties:

An item fabricated of a special glass or other suitable material for the purpose of transmitting electromagnetic radiation having wavelengths greater than those of microwaves and blocking all other wavelengths of light. it is designed to fit into the aperture of a suitable light source or detector. excludes filter, ultraviolet light.