National Item Identification Number

01-321-2905
013212905
6650-01-321-2905
6650013212905

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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27777

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LITTON SYSTEMS INC.
DBA ELECTRO-OPTICAL SYSTEMS
3414 HERRMANN DR.
GARLAND
TX
75041
972-840-7631

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80063

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Reference Numbers (Part Numbers)

A3140640
A3140640
MX-11391/PVS-7
MX-11391/PVS-7A

Required Categories

SPECIFIC USE
EYEPIECE TYPE FOR WHICH DESIGNED
STYLE DESIGNATOR
OVERALL LENGTH

Required Description

PROTECT LENS
BINOCULAR
24 FLAT
0.250 INCHES NOMINAL
1.312 INCHES NOMINAL
1.