NIKON NIKKOR-N 5cm f/1.1 — Interactive Lens Diagram

Home / Lenses / Nikon / NIKON NIKKOR-N 5cm f/1.1NIKON NIKKOR-N 5cm f/1.1US 2,828,671 — Murakami 1958
9 elements / 6 groups
Modified double-Gauss
All-spherical
Scaled 0.5× from f = 100 patent
Focus MechanismUnit focus — entire lens translates; only back focal distance changes
Optical Elements (9)ElementTypeGlass
L1Positive MeniscusSK (Dense Crown), 607/595 — likely HIKARI equivalent
L2Positive MeniscusSK (Dense Crown), 607/595 — same as L1
L3Positive MeniscusLaK/LaF (Lanthanum Crown/Flint), 770/479
L4Negative MeniscusLLF (Light Flint), 593/354
L5Biconcave NegativeF (Flint), 648/338
L6Biconvex PositiveLaK (Lanthanum Crown), 717/479
L7Plano-ConvexLaK (Lanthanum Crown), 717/479 — same as L6
L8Negative MeniscusLF (Light Flint), 626/356
L9Positive MeniscusSK (Dense Crown), 639/555
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Positive Meniscus	SK (Dense Crown), 607/595 — likely HIKARI equivalent
L2	Positive Meniscus	SK (Dense Crown), 607/595 — same as L1
L3	Positive Meniscus	LaK/LaF (Lanthanum Crown/Flint), 770/479
L4	Negative Meniscus	LLF (Light Flint), 593/354
L5	Biconcave Negative	F (Flint), 648/338
L6	Biconvex Positive	LaK (Lanthanum Crown), 717/479
L7	Plano-Convex	LaK (Lanthanum Crown), 717/479 — same as L6
L8	Negative Meniscus	LF (Light Flint), 626/356
L9	Positive Meniscus	SK (Dense Crown), 639/555