CANON EF 200mm f/1.8 L USM — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON EF 200mm f/1.8 L USMCANON EF 200mm f/1.8 L USMJP H01-102413 A↗ — Hideki Ogawa, Sadatoshi Takahashi
10 POWERED ELEMENTS / 8 GROUPS (PATENT CORE)
f ≈ 200.017 mm
f/1.86 PATENT DESIGN
2ω = 12.3°
3 UD-CLASS ELEMENTS
ALL SPHERICAL
Focus MechanismRear focus: cemented negative G2 moves 14.49 mm imageward from infinity to 2.5 m.
Optical Elements (10 physical)ElementTypeGlass
L1Biconvex PositiveS-FPL51 (OHARA; 497816 class, supplier inferred)
L2Positive Meniscus, convex to objectS-FPL51 (OHARA; 497816 class, supplier inferred)
L3Biconcave NegativeBPH5 (historical OHARA; exact 654397 spectral match, supplier inferred)
L4Positive Meniscus, convex to objectS-FPL51 (OHARA; 497816 class, supplier inferred)
L5Negative Meniscus, convex to objectS-LAL14 (OHARA; exact 697555 coordinate, supplier inferred)
L6Positive Meniscus, concave to objectPBH53 (historical OHARA; exact 847239 spectral match, supplier inferred)
L7Biconcave NegativeBPM4 (historical OHARA; exact 613438 spectral match, supplier inferred)
L8Negative Meniscus, concave to objectBPH5 (historical OHARA; exact 654397 spectral match, supplier inferred)
L9Positive Meniscus, convex to imageS-LAL7 (historical OHARA spectral match; supplier inferred)
L10Biconvex PositiveS-PHM52 (OHARA; exact 618634 coordinate, supplier inferred)

Element	Type	Glass
L1	Biconvex Positive	S-FPL51 (OHARA; 497816 class, supplier inferred)
L2	Positive Meniscus, convex to object	S-FPL51 (OHARA; 497816 class, supplier inferred)
L3	Biconcave Negative	BPH5 (historical OHARA; exact 654397 spectral match, supplier inferred)
L4	Positive Meniscus, convex to object	S-FPL51 (OHARA; 497816 class, supplier inferred)
L5	Negative Meniscus, convex to object	S-LAL14 (OHARA; exact 697555 coordinate, supplier inferred)
L6	Positive Meniscus, concave to object	PBH53 (historical OHARA; exact 847239 spectral match, supplier inferred)
L7	Biconcave Negative	BPM4 (historical OHARA; exact 613438 spectral match, supplier inferred)
L8	Negative Meniscus, concave to object	BPH5 (historical OHARA; exact 654397 spectral match, supplier inferred)
L9	Positive Meniscus, convex to image	S-LAL7 (historical OHARA spectral match; supplier inferred)
L10	Biconvex Positive	S-PHM52 (OHARA; exact 618634 coordinate, supplier inferred)