NIKON AF-S DX ZOOM-NIKKOR 12-24mm f/4 G IF-ED — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / NIKON AF-S DX ZOOM-NIKKOR 12-24mm f/4 G IF-EDNIKON AF-S DX ZOOM-NIKKOR 12-24mm f/4 G IF-EDUS 6,940,655 B2↗ — Haruo Sato
11 GLASS ELEMENTS / 7 GROUPS
12.3000-23.3001 mm DESIGN
f/4.1 DESIGN
2ω = 102.4°-64.9°
5 ASPHERICAL SURFACES / 2 ED ELEMENTS
Focus MechanismCONSTRAINED_RECONSTRUCTION: Nikon internal focusing by the L21 cemented doublet only. The 0.30 m focal-plane close state is code-solved at 12.3, 18.0, and 23.3 mm with D8 + D11 conserved and BF/image plane fixed.
Optical Elements (11 physical; 12 modeled media)ElementTypeGlass
L1Neg. Meniscus (2× Asph)M-NBF1 (Hoya catalog equivalent; patent code 744496, supplier unspecified)
L2Biconvex Positive581408 — optical-glass class (vendor unresolved)
L3Biconcave Negative773496 — lanthanum-flint class (vendor unresolved)
L3rHybrid Resin Layer (1× Asph)Unmatched (hybrid aspherical optical resin; nd=1.553890, vd=38.09)
L4Positive Meniscus755275 — dense-flint class (vendor unresolved)
L5Negative Meniscus741527 — lanthanum-crown class (vendor unresolved)
L6Biconvex Positive548458 — light-flint class (vendor unresolved)
L7Positive Meniscus (ED)J-FKH1 (Hikari; patent code 498825)
L8Negative Meniscus804466 — lanthanum-flint class (vendor unresolved)
L9Negative Meniscus804396 — dense-lanthanum-flint class (vendor unresolved)
L10Biconvex Positive (ED)J-FKH1 (Hikari; patent code 498825)
L11Neg. Meniscus (2× Asph)N-SK2 catalog equivalent (patent 606574; production supplier unspecified)

Element	Type	Glass
L1	Neg. Meniscus (2× Asph)	M-NBF1 (Hoya catalog equivalent; patent code 744496, supplier unspecified)
L2	Biconvex Positive	581408 — optical-glass class (vendor unresolved)
L3	Biconcave Negative	773496 — lanthanum-flint class (vendor unresolved)
L3r	Hybrid Resin Layer (1× Asph)	Unmatched (hybrid aspherical optical resin; nd=1.553890, vd=38.09)
L4	Positive Meniscus	755275 — dense-flint class (vendor unresolved)
L5	Negative Meniscus	741527 — lanthanum-crown class (vendor unresolved)
L6	Biconvex Positive	548458 — light-flint class (vendor unresolved)
L7	Positive Meniscus (ED)	J-FKH1 (Hikari; patent code 498825)
L8	Negative Meniscus	804466 — lanthanum-flint class (vendor unresolved)
L9	Negative Meniscus	804396 — dense-lanthanum-flint class (vendor unresolved)
L10	Biconvex Positive (ED)	J-FKH1 (Hikari; patent code 498825)
L11	Neg. Meniscus (2× Asph)	N-SK2 catalog equivalent (patent 606574; production supplier unspecified)