NIKON AF-S NIKKOR 24-85mm f/3.5-4.5G ED VR — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / NIKON AF-S NIKKOR 24-85mm f/3.5-4.5G ED VRNIKON AF-S NIKKOR 24-85mm f/3.5-4.5G ED VRJP 2011-221421 A↗ — Hiroshi Yamamoto
16 PHYSICAL ELEMENTS / 11 AIR-SPACED COMPONENTS / 5 ZOOM GROUPS
PATENT DESIGN 24.70-87.20 mm
MODELED F/3.50 / 5.00 / 5.78 (FIG. 8 CALIBRATION)
3 ASPHERICAL SURFACES
NO INTERNAL CLOSE-FOCUS RECONSTRUCTION
Focus MechanismThe patent describes G2 moving toward the object for close focus but gives no numerical travel, so focus remains fixed at infinity. The 0.38 m minimum focus distance is a production specification.
Optical Elements (16 physical; 18 modeled media)ElementTypeGlass
L11Negative Meniscus847238 class (supplier unresolved)
L12Positive Meniscus773496 class (supplier unresolved)
L13Positive Meniscus816466 lanthanum-flint class
L21aThin Aspheric Material LayerUnmatched (nd=1.53610, νd=41.42; thin aspheric-layer material)
L21bNegative Meniscus835427 lanthanum-flint class
L22Negative Meniscus835427 lanthanum-flint class
L23Biconvex Positive808228 high-dispersion flint class
L24Negative Lens (1× Asph)821427 class (supplier unresolved)
L31Negative Meniscus904313 lanthanum-flint class
L32Biconvex Positive603655 crown class
L33Biconvex PositiveJ-FKH1 — coordinate-compatible ED-class spectral proxy (supplier unresolved)
L41Positive Meniscus001255 high-index flint class
L42Biconcave Negative806409 class (supplier unresolved)
L43Negative Meniscus804466 lanthanum-flint class
L51aThin Aspheric Material LayerUnmatched (nd=1.53610, νd=41.42; thin aspheric-layer material)
L51bPositive Lens806409 class (supplier unresolved)
L52Positive Meniscus487704 crown class
L53Negative Meniscus847238 class (supplier unresolved)

Element	Type	Glass
L11	Negative Meniscus	847238 class (supplier unresolved)
L12	Positive Meniscus	773496 class (supplier unresolved)
L13	Positive Meniscus	816466 lanthanum-flint class
L21a	Thin Aspheric Material Layer	Unmatched (nd=1.53610, νd=41.42; thin aspheric-layer material)
L21b	Negative Meniscus	835427 lanthanum-flint class
L22	Negative Meniscus	835427 lanthanum-flint class
L23	Biconvex Positive	808228 high-dispersion flint class
L24	Negative Lens (1× Asph)	821427 class (supplier unresolved)
L31	Negative Meniscus	904313 lanthanum-flint class
L32	Biconvex Positive	603655 crown class
L33	Biconvex Positive	J-FKH1 — coordinate-compatible ED-class spectral proxy (supplier unresolved)
L41	Positive Meniscus	001255 high-index flint class
L42	Biconcave Negative	806409 class (supplier unresolved)
L43	Negative Meniscus	804466 lanthanum-flint class
L51a	Thin Aspheric Material Layer	Unmatched (nd=1.53610, νd=41.42; thin aspheric-layer material)
L51b	Positive Lens	806409 class (supplier unresolved)
L52	Positive Meniscus	487704 crown class
L53	Negative Meniscus	847238 class (supplier unresolved)