NIKON AF-S VR ZOOM-NIKKOR 24-120mm f/3.5-5.6G IF-ED

US 2004/0218274 A1 — Misako Aoki

15 ELEMENTS / 13 GROUPS
24.720-116.500 mm DESIGN
F/3.604-5.903 DESIGN
2ω = 85.16°-20.24°
2 ASPHERICAL SURFACES
G2 INNER FOCUS / L3A VR

Focus Mechanism

CONSTRAINED_RECONSTRUCTION: patent G2-only internal focus. Close rows are solved at 0.5 m from the focal plane by changing D5 and D14 by equal/opposite amounts while G3 and all rear groups remain fixed; tele |m| = 0.209821.

Optical Elements (15 physical; 16 modeled media)

ElementTypeGlass
L11Negative Meniscus847238 — dense-flint class (vendor unresolved)
L12Positive Meniscus755523 — lanthanum-crown class (vendor unresolved)
L13Positive Meniscus816466 — high-index lanthanum-crown class (vendor unresolved)
L21rBonded Aspheric Resin/Composite LayerUnmatched (thin bonded aspheric resin/composite layer; nd=1.553890, vd=38.09)
L21Negative Meniscus835427 — high-index lanthanum class (vendor unresolved)
L22Biconcave Negative835427 — high-index lanthanum class (vendor unresolved)
L23Biconvex Positive785257 — dense-flint class (vendor unresolved)
L24Negative Meniscus835427 — high-index lanthanum class (vendor unresolved)
L3ANNegative Meniscus805254 — dense-flint class (vendor unresolved)
L3APBiconvex Positive497816 — ED fluorophosphate class (vendor unresolved)
L33Pos. Meniscus (1× Asph)517641/517642 — BK7-class crown (vendor unresolved)
L41Positive Meniscus847238 — dense-flint class (vendor unresolved)
L42Biconcave Negative835427 — high-index lanthanum class (vendor unresolved)
L51Biconvex Positive497816 — ED fluorophosphate class (vendor unresolved)
L52Biconvex Positive487702/487704 — low-index FK/FSL crown class (vendor unresolved)
L53Negative Meniscus847238 — dense-flint class (vendor unresolved)