NIKON NIKKOR-QD·C AUTO 15mm f/5.6 — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / NIKON NIKKOR-QD·C AUTO 15mm f/5.6NIKON NIKKOR-QD·C AUTO 15mm f/5.6JP S48-71634 A↗ — Tomowaki Takahashi
14 ELEMENTS / 12 GROUPS + BUILT-IN FILTER
MODELED EFL 15.309 mm
F/5.6 · 110° FIELD
ALL-SPHERICAL
Focus MechanismInfinity prescription only. The production lens focuses to 0.3 m with a floating close-range correction, but the patent publishes no focusing gaps, so focus travel is not modeled.
Optical Elements (14 physical; 15 modeled media)ElementTypeGlass
L1Negative Meniscus788475 — lanthanum dense flint, LaSF014 class (nearest J-LASF014 HIKARI / TAF4 HOYA, Δnd +0.0004; supplier unconfirmed)
L2Positive Meniscus713539 — lanthanum crown, LaK8 class (nearest J-LAK8 HIKARI / LAC8 HOYA, Δnd −0.0004; supplier unconfirmed)
L3Negative Meniscus693535 — lanthanum crown, LaK13 class (nearest LAC13 HOYA / S-LAL13 OHARA, Δnd +0.0003; supplier unconfirmed)
L4Negative Meniscus693535 — lanthanum crown, LaK13 class (nearest LAC13 HOYA / S-LAL13 OHARA, Δnd +0.0003; supplier unconfirmed)
L5Negative Meniscus697556 — lanthanum crown, LaK14 class (J-LAK14 HIKARI / S-LAL14 OHARA coordinate-compatible; supplier unconfirmed)
FPlane-Parallel PlateUnmatched (filter glass; Abbe number not published)
L6Biconcave NegativeUnmatched (841433 lanthanum dense flint coordinate; no coordinate-compatible catalog glass)
L7Biconvex Positive548459 — extra-light flint, LLF1 class (J-LLF1 HIKARI / LLF1 SCHOTT coordinate-compatible; supplier unconfirmed)
L8Negative Meniscus697556 — lanthanum crown, LaK14 class (J-LAK14 HIKARI / S-LAL14 OHARA coordinate-compatible; supplier unconfirmed)
L9Biconvex Positive595356 — flint (nearest FF5 HOYA, Δnd −0.0021; not a period identification, supplier unconfirmed)
L10Plano-Concave592582 — dense barium crown, SK13/BaCD13 class (nearest BACD13 HOYA, Δnd +0.0002; supplier unconfirmed)
L11Plano-Convex595356 — flint (nearest FF5 HOYA, Δnd −0.0024; not a period identification, supplier unconfirmed)
L12Biconcave Negative861231 — dense flint (nearest J-SFH2 HIKARI, Δnd −0.0007; modern coordinate-compatible curve, not a period glass; supplier unconfirmed)
L13Positive MeniscusUnmatched (448672 low-index crown coordinate; no coordinate-compatible catalog glass)
L14Biconvex Positive510634 — borosilicate crown, BK1 class (nearest BK1 SUMITA, Δnd +0.0003; supplier unconfirmed)

Element	Type	Glass
L1	Negative Meniscus	788475 — lanthanum dense flint, LaSF014 class (nearest J-LASF014 HIKARI / TAF4 HOYA, Δnd +0.0004; supplier unconfirmed)
L2	Positive Meniscus	713539 — lanthanum crown, LaK8 class (nearest J-LAK8 HIKARI / LAC8 HOYA, Δnd −0.0004; supplier unconfirmed)
L3	Negative Meniscus	693535 — lanthanum crown, LaK13 class (nearest LAC13 HOYA / S-LAL13 OHARA, Δnd +0.0003; supplier unconfirmed)
L4	Negative Meniscus	693535 — lanthanum crown, LaK13 class (nearest LAC13 HOYA / S-LAL13 OHARA, Δnd +0.0003; supplier unconfirmed)
L5	Negative Meniscus	697556 — lanthanum crown, LaK14 class (J-LAK14 HIKARI / S-LAL14 OHARA coordinate-compatible; supplier unconfirmed)
F	Plane-Parallel Plate	Unmatched (filter glass; Abbe number not published)
L6	Biconcave Negative	Unmatched (841433 lanthanum dense flint coordinate; no coordinate-compatible catalog glass)
L7	Biconvex Positive	548459 — extra-light flint, LLF1 class (J-LLF1 HIKARI / LLF1 SCHOTT coordinate-compatible; supplier unconfirmed)
L8	Negative Meniscus	697556 — lanthanum crown, LaK14 class (J-LAK14 HIKARI / S-LAL14 OHARA coordinate-compatible; supplier unconfirmed)
L9	Biconvex Positive	595356 — flint (nearest FF5 HOYA, Δnd −0.0021; not a period identification, supplier unconfirmed)
L10	Plano-Concave	592582 — dense barium crown, SK13/BaCD13 class (nearest BACD13 HOYA, Δnd +0.0002; supplier unconfirmed)
L11	Plano-Convex	595356 — flint (nearest FF5 HOYA, Δnd −0.0024; not a period identification, supplier unconfirmed)
L12	Biconcave Negative	861231 — dense flint (nearest J-SFH2 HIKARI, Δnd −0.0007; modern coordinate-compatible curve, not a period glass; supplier unconfirmed)
L13	Positive Meniscus	Unmatched (448672 low-index crown coordinate; no coordinate-compatible catalog glass)
L14	Biconvex Positive	510634 — borosilicate crown, BK1 class (nearest BK1 SUMITA, Δnd +0.0003; supplier unconfirmed)