NIKON AF-S VR ZOOM-NIKKOR 200-400mm f/4G IF-ED — Optical Cross-Section & Ray Tracing

Home / Lenses / Nikon / NIKON AF-S VR ZOOM-NIKKOR 200-400mm f/4G IF-EDNIKON AF-S VR ZOOM-NIKKOR 200-400mm f/4G IF-EDUS 2005/0157403 A1↗ — Susumu Sato
24 ELEMENTS / 17 GROUPS
200-400mm f/4 (MARKETED)
204-392mm F/4.08 (EXAMPLE 1)
4 ED ELEMENTS (PRODUCTION SPEC)
VR / INTERNAL FOCUS
Focus MechanismPUBLISHED internal focus: G1m (L15-L17) translates 17.49408 mm imageward from infinity to the patent's 2 m state; G2/G3 zoom gaps are published. G4m VR decenter is transverse and is not represented as an axial var state.
Optical Elements (24 physical)ElementTypeGlass
L11Negative MeniscusE-LAFH2 catalog equivalent (patent 804339; production supplier unspecified)
L12Biconvex Positive498826 - low-dispersion crown class (vendor identity unproven)
L13Positive Meniscus498826 - low-dispersion crown class (vendor identity unproven)
L14Positive Meniscus498826 - low-dispersion crown class (vendor identity unproven)
L15Biconcave Negative788474/475 - lanthanum glass class
L16Positive Meniscus847238 - dense-flint class
L17Biconcave Negative603655 - phosphate-crown class
L18Positive Meniscus804396 - lanthanum glass class
L21Negative Meniscus697555 - lanthanum-crown class
L22Biconvex Positive847238 - dense-flint class
L23Biconcave NegativeS-BSM81 catalog equivalent (patent 640601; production supplier unspecified)
L24Negative MeniscusS-BSM81 catalog equivalent (patent 640601; production supplier unspecified)
L31Biconvex Positive603655 - phosphate-crown class
L32Biconvex Positive603655 - phosphate-crown class
L33Negative MeniscusJ-LAFH3 catalog equivalent (patent 795286; production supplier unspecified)
L41Negative MeniscusE-LAFH2 catalog equivalent (patent 804339; production supplier unspecified)
L42Biconvex Positive603655 - phosphate-crown class
L43Positive Meniscus603655 - phosphate-crown class
L44Biconvex Positive847238 - dense-flint class
L45Biconcave Negative741527/528 - lanthanum-crown class
L46Biconcave Negative741527/528 - lanthanum-crown class
L47Biconvex Positive498826 - low-dispersion crown class (vendor identity unproven)
L48Biconvex PositiveS-BSM81 catalog equivalent (patent 640601; production supplier unspecified)
L49Biconcave Negative847238 - dense-flint class

Element	Type	Glass
L11	Negative Meniscus	E-LAFH2 catalog equivalent (patent 804339; production supplier unspecified)
L12	Biconvex Positive	498826 - low-dispersion crown class (vendor identity unproven)
L13	Positive Meniscus	498826 - low-dispersion crown class (vendor identity unproven)
L14	Positive Meniscus	498826 - low-dispersion crown class (vendor identity unproven)
L15	Biconcave Negative	788474/475 - lanthanum glass class
L16	Positive Meniscus	847238 - dense-flint class
L17	Biconcave Negative	603655 - phosphate-crown class
L18	Positive Meniscus	804396 - lanthanum glass class
L21	Negative Meniscus	697555 - lanthanum-crown class
L22	Biconvex Positive	847238 - dense-flint class
L23	Biconcave Negative	S-BSM81 catalog equivalent (patent 640601; production supplier unspecified)
L24	Negative Meniscus	S-BSM81 catalog equivalent (patent 640601; production supplier unspecified)
L31	Biconvex Positive	603655 - phosphate-crown class
L32	Biconvex Positive	603655 - phosphate-crown class
L33	Negative Meniscus	J-LAFH3 catalog equivalent (patent 795286; production supplier unspecified)
L41	Negative Meniscus	E-LAFH2 catalog equivalent (patent 804339; production supplier unspecified)
L42	Biconvex Positive	603655 - phosphate-crown class
L43	Positive Meniscus	603655 - phosphate-crown class
L44	Biconvex Positive	847238 - dense-flint class
L45	Biconcave Negative	741527/528 - lanthanum-crown class
L46	Biconcave Negative	741527/528 - lanthanum-crown class
L47	Biconvex Positive	498826 - low-dispersion crown class (vendor identity unproven)
L48	Biconvex Positive	S-BSM81 catalog equivalent (patent 640601; production supplier unspecified)
L49	Biconcave Negative	847238 - dense-flint class