Part Number
DEMIL
Shelf Life
UOM
NIIN
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:
1.772 inches
MRC:
A measurement of the axial thickness of an item,in distinction from length or width.BMLY
Axial Thickness:
0.315 inches and 0.158 inches
MRC:
An overall measurement of the smallest dimension through the center of the outer surfaces of a compound lens,in distinction from length or width.BMMN
Compound Lensaxial Thickness:
0.473 inches
MRC:
A measurement of the smallest dimension across the edge of a compound lens from one surface to the other,in distinction from length or width.BMMP
Compound Lens Edge Thickness:
0.413 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:
13.029 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:
12.770 inches
MRC:
A measurement of the longest dimension from the primary focal point to the front surface of a lens.BMMW
Front Focal Length:
12.987 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:
1.5740 and 1.6210
MRC:
The fixed angle of refraction of the abbe prism.BMMZ
Abbe Constant:
57.700 and 36.600
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of a compound lens.BMSC
Compound Lens Style:
Doublet
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of an individual lens.BMSD
Individual Lens Style:
Double convex and meniscus diverging
MRC:
The radius of the left surface of the element.CTKW
Element Left Surface Radius:
-4.331 inches and 8.189 inches
MRC:
The radius of the right surface of the element.CTKX
Element Right Surface Radius:
-4.331 inches and -35.433 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 c
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Glass optical
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Mil-g-174, class 1, grade c military specification single material response
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:
1. Fire control, telescope, mk 53 mod 0
