8615947

Optical instrument window

8615947 Description

1.692 inches diameter, 0.157 inches thickness, light deviation not to exceed 1.0MINUTE of arc; surface quality is 80-50; spherical power not to exceed 4 millidiopters; astigmatism not to exceed 2 millidiopters .

Features

Light deviation not to exceed 1.0minute of arc; surface quality is 80-50; spherical power not to exceed 4 millidiopters; astigmatism not to exceed 2 millidiopters

Properties of 8615947

Diameter:
1.692 inches
Thickness:
0.157 inches
Cubic Measure:
0.4495 cubic inches
Polished Surface:
Both
Polished Periphery:
Not provided
Bevel Angle In Deg:
45.000
Material:
Glass, optical, mil-g-174, class 1, grade c, type 517-645
Material:
Glass, optical, mil-g-174, class 1, grade c, type 517-645
NSN:
1240-01-191-1670
Description:
Window,optical Instrument
Cage Code:

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 04/29/2024