Part Number
DEMIL
Shelf Life
UOM
NIIN
Part Information
Left surface edge chamfer 0.010 to 0.020 in. By 45 deg. Right surface edge chamfer 0.050 to 0.060 in. By 45 deg. Both surfaces coated with magnesium fluoride. 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 1.097 inches and 1.100 inches
MRC:
A measurement of the axial thickness of an item,in distinction from length or width.BMLY
Axial Thickness:
Between 0.241 inches and 0.251 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:
-0.927 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:
-0.961 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:
1.6890
MRC:
The fixed angle of refraction of the abbe prism.BMMZ
Abbe Constant:
30.900
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of a single lens.BMSB
Single Lens Style:
Double concave
MRC:
The radius of the left surface of the element.CTKW
Element Left Surface Radius:
2.774 inches
MRC:
The radius of the right surface of the element.CTKX
Element Right Surface Radius:
0.860 inches
MRC:
The element,compound,or mixture of which an item is fabricated,excluding any surface treatment.MATL
Material:
Glass, optical, mil-g-174, grade c, type 689-309
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Glass, optical, mil-g-174, grade c, type 689-309
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
