Part Number
DEMIL
Shelf Life
UOM
NIIN
Part Information
Edges chamfered 0.010 to 0.020 in. By 45 deg. Both surfaces coated with magnesium fluoride. Rim ground.
NSN
National Stock Number:
TXT
Description:
Optical Instrument Lens
MRC:
The length of a straight line which passes through the center of a circular figure or body,and terminates at the circumference.ABMZ
Diameter:
Between 1.297 inches and 1.300 inches
MRC:
A measurement of the axial thickness of an item,in distinction from length or width.BMLY
Axial Thickness:
Between 0.590 inches and 0.610 inches
MRC:
A measurement of the longest dimension from the center of a lens to either of its focal points,in distinction from width.BMMS
Equivalent Focal Length:
1.578 inches
MRC:
A measurement of the longest reciprocal dimension from the back surface of the lens to the secondary focal point,in distinction from width.BMMT
Back Focal Length:
1.286 inches
MRC:
An indication of the ratio of the speed of light in the first medium to its speed in the second medium.BMMX
Refraction Index:
1.6170
MRC:
The fixed angle of refraction of the abbe prism.BMMZ
Abbe Constant:
55.000
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of a single lens.BMSB
Single Lens Style:
Double convex
MRC:
The radius of the left surface of the element.CTKW
Element Left Surface Radius:
1.236 inches
MRC:
The radius of the right surface of the element.CTKX
Element Right Surface Radius:
3.740 inches
MRC:
The element,compound,or mixture of which an item is fabricated,excluding any surface treatment.MATL
Material:
Glass, optical, mil-g-174, class 1, grade d, type 617-550
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Glass, optical, mil-g-174, class 1, grade d, type 617-550
MRC:
The justification for the assignment of a federal supply class /fsc/ to an item based on the classification of the next higher classifiable assembly.ZZZV
Fsc Application Data:
Periscope, tank
