National Item Identification Number

00-789-8175
007898175
6650-00-789-8175
6650007898175

National Stock Number

Item Name

FILTER,LIGHT,INTERFERENCE

Federal Supply Class

6650

Description

A light transmitting item consisting of a transparent, flat glass body having two plane-parallel surfaces, either with only nonabsorbing dielectric coatings or absorbing and nonabsorbing coatings of a thickness nearly equivalent to the wavelength of the transmitted light. Interference begins at the thin bordering surfaces of the coatings, the penetrating light waves being superimposed on the reflected light waves. The item can be installed in various optical insturments, to serve as an eye protecting device.

Commercial and Government Entity Code (Supplier Data)

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Reference Numbers (Part Numbers)

2493632

Required Categories

MATERIAL
DIAMETER
THICKNESS

Required Description

GLASS
2.062 INCHES NOMINAL
0.125 INCHES NOMINAL