Part Number
DEMIL
Shelf Life
UOM
NIIN
Part Information
Black arrow on periphery. Front and back surfaces coated with magnesium fluoride. Chamfer edges 0.010 in. To 0.015 in. By 40 to 50 deg. Rim and chamfers 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 2.123 inches and 2.125 inches
MRC:
A measurement of the axial thickness of an item,in distinction from length or width.BMLY
Axial Thickness:
Between 0.464 inches and 0.472 inches and 0.278 inches and 0.286 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:
Between 0.742 inches and 0.758 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:
8.126 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:
7.772 inches
MRC:
A measurement of the longest dimension from the primary focal point to the front surface of a lens.BMMW
Front Focal Length:
7.992 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:
1.5310 and 1.6030
MRC:
The fixed angle of refraction of the abbe prism.BMMZ
Abbe Constant:
62.100 and 38.000
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:
-3.167 inches and 5.391 inches
MRC:
The radius of the right surface of the element.CTKX
Element Right Surface Radius:
-3.167 inches and 12.399 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 b, type 531-621 and type 603-380
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Glass, optical, mil-g-174, class 1, grade b, type 531-621 and type 603-380
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:
Receiver-transmitter, laser
