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

Home / Lenses / Canon / CANON EF 100-400mm f/4.5-5.6 L IS II USMCANON EF 100-400mm f/4.5-5.6 L IS II USMUS 2015/0146044 A1↗ — Shigenobu Sugita
21 ELEMENTS / 16 GROUPS
PATENT ZOOM POINTS 102.79-389.03 mm
MODELED EFL 102.758-388.939 mm
DESIGN f/4.63-5.85 / MARKETED f/4.5-5.6
6-UNIT +/-/+/-/+/- ZOOM / NO INTERNAL FOCUS RECONSTRUCTION
ALL-SPHERICAL
Focus MechanismNO_INTERNAL_RECONSTRUCTION: Example 2 states that L6 moves imageward for main focus and L4 slightly objectward for auxiliary floating correction, but it does not publish complete finite-focus spacing rows or the L4 travel magnitude. All authored focus pairs therefore remain at the published infinity values. Canon's marketed 0.98 m MFD is metadata only; the patent's 1.0 m near-distance statement is measured from the image plane.
Optical Elements (21 physical)ElementTypeGlass
E01Positive Meniscus623582 crown class (vendor unresolved)
E02Negative Meniscus654397 KZFS/NBH-class flint (vendor unresolved)
E03Positive Meniscus439950 ultra-low-dispersion crown; S-FPL53-class (vendor unresolved)
E04Biconvex Positive596392 flint class (vendor unresolved)
E05Biconcave Negative773496 lanthanum flint class (vendor unresolved)
E06Negative Meniscus773496 lanthanum flint class (vendor unresolved)
E07Biconcave Negative603607 crown class (vendor unresolved)
E08Positive Meniscus847238 dense-flint class (vendor unresolved)
E09Biconvex PositiveCaF2 fluorite coefficient proxy (production-correlation inference; patent material unnamed)
E10Biconvex Positive517524 class; S-NSL36 is the closest public coordinate match
E11Negative Meniscus904313 high-index lanthanum-flint class (vendor unresolved)
E12Biconcave Negative593353 flint class (vendor unresolved)
E13Biconvex Positive785257 dense-flint class (vendor unresolved)
E14Positive Meniscus762401 lanthanum-flint class (OHARA S-LAM55 / HIKARI J-LAF05 coordinate)
E15Biconvex Positive487702 low-index crown; S-FSL5-class (vendor unresolved)
E16Negative Meniscus847238 dense-flint class (vendor unresolved)
E17Positive Meniscus729547 lanthanum-crown class (vendor unresolved)
E18Negative Meniscus883408 high-index lanthanum-flint class (vendor unresolved)
E19Positive Meniscus805254/805255 dense-flint class (vendor unresolved)
E20Biconcave Negative729547 lanthanum-crown class (vendor unresolved)
E21Biconvex Positive654397 KZFS/NBH-class flint (vendor unresolved)

Element	Type	Glass
E01	Positive Meniscus	623582 crown class (vendor unresolved)
E02	Negative Meniscus	654397 KZFS/NBH-class flint (vendor unresolved)
E03	Positive Meniscus	439950 ultra-low-dispersion crown; S-FPL53-class (vendor unresolved)
E04	Biconvex Positive	596392 flint class (vendor unresolved)
E05	Biconcave Negative	773496 lanthanum flint class (vendor unresolved)
E06	Negative Meniscus	773496 lanthanum flint class (vendor unresolved)
E07	Biconcave Negative	603607 crown class (vendor unresolved)
E08	Positive Meniscus	847238 dense-flint class (vendor unresolved)
E09	Biconvex Positive	CaF2 fluorite coefficient proxy (production-correlation inference; patent material unnamed)
E10	Biconvex Positive	517524 class; S-NSL36 is the closest public coordinate match
E11	Negative Meniscus	904313 high-index lanthanum-flint class (vendor unresolved)
E12	Biconcave Negative	593353 flint class (vendor unresolved)
E13	Biconvex Positive	785257 dense-flint class (vendor unresolved)
E14	Positive Meniscus	762401 lanthanum-flint class (OHARA S-LAM55 / HIKARI J-LAF05 coordinate)
E15	Biconvex Positive	487702 low-index crown; S-FSL5-class (vendor unresolved)
E16	Negative Meniscus	847238 dense-flint class (vendor unresolved)
E17	Positive Meniscus	729547 lanthanum-crown class (vendor unresolved)
E18	Negative Meniscus	883408 high-index lanthanum-flint class (vendor unresolved)
E19	Positive Meniscus	805254/805255 dense-flint class (vendor unresolved)
E20	Biconcave Negative	729547 lanthanum-crown class (vendor unresolved)
E21	Biconvex Positive	654397 KZFS/NBH-class flint (vendor unresolved)