Features
Glass optical material.
Includes quality control certificate of conformance.
Specifications
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Diameter:
78.230 millimeters
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End Application:
Telescope
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Axial Thickness:
Between 1.2 millimeters and 28.2 millimeters
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Compound Lensaxial Thickness:
29.390 millimeters
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Compound Lens Edge Thickness:
13.6 millimeters
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Equivalent Focal Length:
368.920 centimeters
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Back Focal Length:
407.880 centimeters
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Front Focal Length:
316.230 centimeters
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Compound Lens Style:
Doublet
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Individual Lens Style:
Double concave and double convex
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Material:
Glass, optical
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Federal Supply Class (fsc):
Optical instruments, test equipment, components and accessories
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National Stock Number (nsn):
6650-00-315-4103