181146PC1

Optical instrument window

181146PC1 Description

2.5886 inches diameter, 0.3937 inches thickness, 3.4941 inches length, 4 corners 12.7 mm /0.500 in./ radius , glass, mil-g-16592, grade b material.

Features

4 corners 12.7 mm /0.500 in./ radius

Properties of 181146PC1

Diameter:
Between 2.5886 inches and 2.5984 inches
Thickness:
0.3937 inches
Length:
Between 3.4941 inches and 3.5039 inches
Refraction Index:
1.5170
Polished Surface:
Both
Dispersion:
64.5 angstroms
Reflection Reducing Surface:
Both
Polished Periphery:
Not provided
Material:
Glass, mil-g-16592, grade b
Material:
Glass, mil-g-16592, grade b
Fsc Application Data:
Periscope mk 23, mod 0
NSN:
1240-00-171-4220
Description:
Window,optical Instrument
Cage Code:
10001

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 05/17/2024