CANON EF 100-400mm f/4.5-5.6 L IS USM — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON EF 100-400mm f/4.5-5.6 L IS USMCANON EF 100-400mm f/4.5-5.6 L IS USMJP 2000-47107 A↗ — Hiroshi Endo
17 ELEMENTS / 14 PHYSICAL GROUPS
PATENT f = 102.68 / 161.53 / 389.19 mm
PATENT FNO = 4.6 / 5.1 / 5.8
ALL-SPHERICAL
1.8 m MFD — CONSTRAINED RECONSTRUCTION
Focus MechanismCONSTRAINED_RECONSTRUCTION: the patent moves G4 objectward and G6 imageward for closer focus. Canon's rounded 1.8 m MFD and 0.2x maximum-magnification product specifications are used as reconstruction targets while the patent's same-distance G4 travel is held constant across zoom. The resulting precise internal shifts are one compatible paraxial solution, not patent-published spacings or measured production travel.
Optical Elements (17 physical)ElementTypeGlass
E1Positive Meniscus487702 class (vendor not established)
E2Negative Meniscus750350 class (lanthanum flint coordinate family; vendor not established)
E3Biconvex PositiveFluorite (CaF2; production correlation)
E4Biconcave Negative713539 class (vendor not established)
E5Biconcave Negative623582 class (S-BSM15/BACD15 coordinate family; vendor not established)
E6Biconvex Positive847238 class (dense flint coordinate family; vendor not established)
E7Biconvex Positive439950 class (S-FPL53 coordinate; Canon Super UD correlation; vendor not established)
E8Negative Meniscus702412 class (vendor not established)
E9Positive MeniscusK-SSK9 coefficient proxy (patent nd=1.62012, nu_d=49.5; production supplier unspecified)
E10Negative Meniscus603606 class (SK14 coordinate family; vendor not established)
E11Biconvex Positive487702 class (vendor not established)
E12Negative Meniscus805254 class (high-index flint coordinate family; vendor not established)
E13Biconvex Positive516641 class (S-BSL7 coordinate family; vendor not established)
E14Positive Meniscus667483 class (BAF11 coordinate family; vendor not established)
E15Negative Meniscus835427 class (S-LAH55V coordinate family; vendor not established)
E16Biconvex Positive728285 class (dense flint coordinate family; vendor not established)
E17Biconcave Negative773496 class (high-index lanthanum family; vendor not established)

Element	Type	Glass
E1	Positive Meniscus	487702 class (vendor not established)
E2	Negative Meniscus	750350 class (lanthanum flint coordinate family; vendor not established)
E3	Biconvex Positive	Fluorite (CaF2; production correlation)
E4	Biconcave Negative	713539 class (vendor not established)
E5	Biconcave Negative	623582 class (S-BSM15/BACD15 coordinate family; vendor not established)
E6	Biconvex Positive	847238 class (dense flint coordinate family; vendor not established)
E7	Biconvex Positive	439950 class (S-FPL53 coordinate; Canon Super UD correlation; vendor not established)
E8	Negative Meniscus	702412 class (vendor not established)
E9	Positive Meniscus	K-SSK9 coefficient proxy (patent nd=1.62012, nu_d=49.5; production supplier unspecified)
E10	Negative Meniscus	603606 class (SK14 coordinate family; vendor not established)
E11	Biconvex Positive	487702 class (vendor not established)
E12	Negative Meniscus	805254 class (high-index flint coordinate family; vendor not established)
E13	Biconvex Positive	516641 class (S-BSL7 coordinate family; vendor not established)
E14	Positive Meniscus	667483 class (BAF11 coordinate family; vendor not established)
E15	Negative Meniscus	835427 class (S-LAH55V coordinate family; vendor not established)
E16	Biconvex Positive	728285 class (dense flint coordinate family; vendor not established)
E17	Biconcave Negative	773496 class (high-index lanthanum family; vendor not established)