National Item Identification Number

01-328-6624
013286624
6650-01-328-6624
6650013286624

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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13499

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Reference Numbers (Part Numbers)

685-7312-001

Required Categories

OVERALL LENGTH
OVERALL WIDTH

Required Description

4.200 INCHES NOMINAL
2.170 INCHES NOMINAL