278703PC12

Optical instrument window

278703PC12 Description

39.800 millimeters diameter, 3.300 millimeters thickness, polished surface finish, glass, optical, jan-g-174, type 517-645, grade c material.

Properties of 278703PC12

Diameter:
Between 39.800 millimeters and 40.000 millimeters
Thickness:
Between 3.300 millimeters and 3.700 millimeters
Surface Finish:
Polished
Bevel Depth:
1.400 millimeters
Refraction Index:
1.5170
Polished Surface:
Both
Dispersion:
64.5 angstroms
Reflection Reducing Surface:
Both
Polished Periphery:
Not provided
Bevel Angle In Deg:
Between 44.8333 and 45.1667
Material:
Glass, optical, jan-g-174, type 517-645, grade c
Material:
Glass, optical, jan-g-174, type 517-645, grade c
Fsc Application Data:
Rangefinder mk 37 mods 5 and 6
NSN:
1240-00-171-4160
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 05/02/2024