ZEISS BATIS 85mm f/1.8 — Optical Cross-Section & Ray Tracing

Home / Lenses / Carl Zeiss Oberkochen / ZEISS BATIS 85mm f/1.8ZEISS BATIS 85mm f/1.8JP 2015-096915 A↗, Example 2 — Hirofumi Tabata, Yasuhiko Obikane
11 ELEMENTS / 8 GROUPS
85 mm marketed / 82.87 mm patent
f/1.8 marketed / Fno 1.85 patent-model infinity
2ω = 28.60° at infinity
PUBLISHED INNER FOCUS / VC GROUP IDENTIFIED
Focus MechanismPUBLISHED inner focus: G2 moves imageward through INF, |β|=0.025, and MOD |β|=0.125 states.
Optical Elements (11 physical)ElementTypeGlass
L1Positive MeniscusN-LASF46B catalog proxy; 904313 — high-index lanthanum-flint class (supplier unproven)
L2Biconvex PositiveH-FK61 catalog proxy; 497816 — low-dispersion fluorine/phosphate-crown class (supplier unproven)
L3Biconcave NegativeE-FD13 catalog proxy; 741278 — dense-flint class (supplier unproven)
L4Positive MeniscusBACED5 catalog proxy; 658509 — dense-crown class (supplier unproven)
L5Biconcave NegativeH-QK3L catalog proxy; 487704 — low-index crown class (supplier unproven)
L6Negative MeniscusH-ZF13 catalog proxy; 785257 — dense-flint class (supplier unproven)
L7Biconvex PositiveFCD515 catalog proxy; 593686 — low-dispersion crown class (supplier unproven)
L8Negative MeniscusN-LASF44 catalog proxy; 804465 — lanthanum high-index class (supplier unproven)
L9Biconvex PositiveJ-LASFH6 catalog proxy; 806333 — high-index flint class (supplier unproven)
L10Biconcave NegativeH-QK3L catalog proxy; 487704 — low-index crown class (supplier unproven)
L11Negative MeniscusS-NSL3 catalog proxy; 518590 — crown class (supplier unproven)

Element	Type	Glass
L1	Positive Meniscus	N-LASF46B catalog proxy; 904313 — high-index lanthanum-flint class (supplier unproven)
L2	Biconvex Positive	H-FK61 catalog proxy; 497816 — low-dispersion fluorine/phosphate-crown class (supplier unproven)
L3	Biconcave Negative	E-FD13 catalog proxy; 741278 — dense-flint class (supplier unproven)
L4	Positive Meniscus	BACED5 catalog proxy; 658509 — dense-crown class (supplier unproven)
L5	Biconcave Negative	H-QK3L catalog proxy; 487704 — low-index crown class (supplier unproven)
L6	Negative Meniscus	H-ZF13 catalog proxy; 785257 — dense-flint class (supplier unproven)
L7	Biconvex Positive	FCD515 catalog proxy; 593686 — low-dispersion crown class (supplier unproven)
L8	Negative Meniscus	N-LASF44 catalog proxy; 804465 — lanthanum high-index class (supplier unproven)
L9	Biconvex Positive	J-LASFH6 catalog proxy; 806333 — high-index flint class (supplier unproven)
L10	Biconcave Negative	H-QK3L catalog proxy; 487704 — low-index crown class (supplier unproven)
L11	Negative Meniscus	S-NSL3 catalog proxy; 518590 — crown class (supplier unproven)