Features
grade b jan-g-174 optical glass material.
Includes quality control certificate of conformance.
Specifications
-
Diameter:
4.080 inches
-
Axial Thickness:
2.769 inches
-
Equivalent Focal Length:
3.919 inches
-
Back Focal Length:
4.453 inches
-
Front Focal Length:
3.684 inches
-
Refraction Index:
1.7510
-
Abbe Constant:
27.800
-
Single Lens Style:
Double concave
-
Individual Lens Style:
Double concave
-
Element Left Surface Radius:
8.718 inches
-
Element Right Surface Radius:
5.044 inches
-
Material:
Glass, optical, jan-g-174, grade b
-
Federal Supply Class (fsc):
Optical instruments, test equipment, components and accessories
-
National Stock Number (nsn):
6650-00-995-8015