12549116

Optical instrument window

12549116 Description

2.440 inches diameter, glass, optical, MIL-G-174, grade b, type 517-642 material, glass, optical, MIL-G-174, grade b, type 517-642 iii material.

Properties of 12549116

Diameter:
2.440 inches
Polished Periphery:
Provided
Material:
Glass, optical, mil-g-174, grade b, type 517-642
Material:
Glass, optical, mil-g-174, grade b, type 517-642
NSN:
1240-01-291-2782
Description:
Window,optical Instrument
Cage Code:
19200

Definition Optical Instrument Window

A color free item of transparent or translucent material, usually optical glass, having specific light dispersive and refractive properties. This item must have two plane-parallel surfaces and is designed for use in an optical instrument to provide a barrier to foreign matter and/or permit light transmission in or to the optical system.

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Last modified 11/17/2024