NIKON FISHEYE-NIKKOR 6mm f/5.6 — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / NIKON FISHEYE-NIKKOR 6mm f/5.6NIKON FISHEYE-NIKKOR 6mm f/5.6US 3,524,697 Example 1 — Isshiki / Matsuki
9 elements / 6 groups
f ≈ 6.00 mm
F/5.6
2ω = 220°
all-spherical
Focus MechanismFixed-focus mirror-lock-up fisheye; the patent publishes no variable air spacings.
Optical Elements (9)ElementTypeGlass
L1Negative MeniscusBACD4 / N-SK4 class (613/586)
L2Negative MeniscusBACD16 / N-SK16 / S-BSM16 class (620/603)
L3Biconcave NegativeFC5 / N-FK5 / S-FSL5 class (488/703)
L4Positive MeniscusFD110 / N-SF11 / S-TIH11 class (785/260)
L6Biconcave NegativeFD110 / N-SF11 / S-TIH11 class (785/260)
L7Biconvex PositiveLAF2 / N-LAF2 / S-LAM2 class (744/450)
L8Positive Meniscus768465 — lanthanum flint patent melt (nd=1.76764, νd=46.5; no exact public catalog match)
L9Negative MeniscusFD110 / N-SF11 / S-TIH11 class (785/260)
L10Biconvex PositiveS-BSM22 (OHARA) / N-SSK2 class (622/532)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Negative Meniscus	BACD4 / N-SK4 class (613/586)
L2	Negative Meniscus	BACD16 / N-SK16 / S-BSM16 class (620/603)
L3	Biconcave Negative	FC5 / N-FK5 / S-FSL5 class (488/703)
L4	Positive Meniscus	FD110 / N-SF11 / S-TIH11 class (785/260)
L6	Biconcave Negative	FD110 / N-SF11 / S-TIH11 class (785/260)
L7	Biconvex Positive	LAF2 / N-LAF2 / S-LAM2 class (744/450)
L8	Positive Meniscus	768465 — lanthanum flint patent melt (nd=1.76764, νd=46.5; no exact public catalog match)
L9	Negative Meniscus	FD110 / N-SF11 / S-TIH11 class (785/260)
L10	Biconvex Positive	S-BSM22 (OHARA) / N-SSK2 class (622/532)