189659PC3

Optical instrument window

189659PC3 Description

24.800 millimeters diameter, 4.000 millimeters thickness, glass, optical, jan-g-174, type 517-645, grade a material, glass, optical, jan-g-174, type 517-645, grade a iii material.

Properties of 189659PC3

Diameter:
Between 24.800 millimeters and 25.000 millimeters
Thickness:
4.000 millimeters
Refraction Index:
1.5171
Polished Surface:
Both
Dispersion:
64.5 angstroms
Reflection Reducing Surface:
Both
Polished Periphery:
Not provided
Material:
Glass, optical, jan-g-174, type 517-645, grade a
Material:
Glass, optical, jan-g-174, type 517-645, grade a
NSN:
1240-00-171-7898
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 11/17/2024