CANON RF 85mm f/1.2 L USM — Optical Cross-Section & Ray Tracing

Home / Lenses / Canon / CANON RF 85mm f/1.2 L USMCANON RF 85mm f/1.2 L USMUS 2020/0012073 A1↗, Example 1 — Satoshi Maetaki
14 ELEMENTS / 9 GROUPS
f ≈ 86.5 mm
F/1.24
2ω ≈ 28.1°
1 ASPHERICAL SURFACE
Lp1 + Lp2 ANOMALOUS-DISPERSION PAIR
Focus MechanismInternal focus: unit L2 (elements 3–10 and the stop) moves toward the object; units L1 and L3 fixed. Close-focus gaps calculated for 0.85 m.
Optical Elements (14 physical)ElementTypeGlass
L1Biconvex PositivePCD4 (HOYA catalog equivalent; patent vendor unspecified)
L2Biconcave NegativeS-NBH8 (OHARA catalog equivalent; patent vendor unspecified)
L3Positive MeniscusPBH21 (OHARA historical catalog equivalent; patent vendor unspecified)
L4Positive MeniscusS-FPL51 (OHARA catalog equivalent; patent vendor unspecified)
L5Neg. Meniscus (1× Asph)S-NBH56 (OHARA catalog equivalent; patent vendor unspecified)
L6Biconcave NegativeS-NBH56 (OHARA catalog equivalent; patent vendor unspecified)
L7Biconvex PositiveS-LAH58 (OHARA catalog equivalent; patent vendor unspecified)
L8Biconcave NegativeS-TIL2 (OHARA catalog equivalent; patent vendor unspecified)
L9Positive MeniscusUnmatched (604208 — Canon BR-optics organic material, inferred; patent gives nd, νd and ΔθgF only)
L10Biconvex PositiveS-LAH98 (OHARA catalog equivalent; patent vendor unspecified)
L11Biconvex PositiveS-LAH98 (OHARA catalog equivalent; patent vendor unspecified)
L12Biconcave NegativeS-TIM2 (OHARA catalog equivalent; patent vendor unspecified)
L13Biconcave NegativeS-TIM28 (OHARA catalog equivalent; patent vendor unspecified)
L14Biconvex PositiveTAFD37A (HOYA catalog equivalent; patent vendor unspecified)

Element	Type	Glass
L1	Biconvex Positive	PCD4 (HOYA catalog equivalent; patent vendor unspecified)
L2	Biconcave Negative	S-NBH8 (OHARA catalog equivalent; patent vendor unspecified)
L3	Positive Meniscus	PBH21 (OHARA historical catalog equivalent; patent vendor unspecified)
L4	Positive Meniscus	S-FPL51 (OHARA catalog equivalent; patent vendor unspecified)
L5	Neg. Meniscus (1× Asph)	S-NBH56 (OHARA catalog equivalent; patent vendor unspecified)
L6	Biconcave Negative	S-NBH56 (OHARA catalog equivalent; patent vendor unspecified)
L7	Biconvex Positive	S-LAH58 (OHARA catalog equivalent; patent vendor unspecified)
L8	Biconcave Negative	S-TIL2 (OHARA catalog equivalent; patent vendor unspecified)
L9	Positive Meniscus	Unmatched (604208 — Canon BR-optics organic material, inferred; patent gives nd, νd and ΔθgF only)
L10	Biconvex Positive	S-LAH98 (OHARA catalog equivalent; patent vendor unspecified)
L11	Biconvex Positive	S-LAH98 (OHARA catalog equivalent; patent vendor unspecified)
L12	Biconcave Negative	S-TIM2 (OHARA catalog equivalent; patent vendor unspecified)
L13	Biconcave Negative	S-TIM28 (OHARA catalog equivalent; patent vendor unspecified)
L14	Biconvex Positive	TAFD37A (HOYA catalog equivalent; patent vendor unspecified)