National Item Identification Number

01-197-4585
011974585
6650-01-197-4585
6650011974585

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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94580

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Reference Numbers (Part Numbers)

10061441-101

Required Categories

MATERIAL
SURFACE MATERIAL
SURFACE PARALLELISM
OVERALL LENGTH
OVERALL HEIGHT;

Required Description

PLASTIC
PLASTIC
60.000 SECONDS
2.689 INCHES NOMINAL
0.798 INCHES NOMINAL
0.