OLYMPUS OM ZUIKO AUTO-W 21mm f/2 — Optical Cross-Section & Ray Tracing

Home / Lenses / Olympus / OLYMPUS OM ZUIKO AUTO-W 21mm f/2OLYMPUS OM ZUIKO AUTO-W 21mm f/2US 4,210,388 EXAMPLE 1 — OLYMPUS / Y. IKEDA
11 ELEMENTS / 9 GROUPS
f ≈ 21 mm (marketed) / 28.5 mm (computed)
F/2.0
2ω = 92°
ALL SPHERICAL
Focus MechanismUnit focus (BFD only). Production lens uses floating elements — not modeled here.
Optical Elements (11)ElementTypeGlass
L1Positive Meniscus639449 — LAC14 / BaLF5-class barium lanthanum flint (no exact public catalog match)
L2Negative MeniscusS-LAL59 (OHARA, 734515) / LaK9 class
L3Negative MeniscusS-LAH66 (OHARA)
L4aPlano-ConvexF2 / TIF1 (Schott / OHARA)
L4bPlano-ConvexF2 / TIF1 (Schott / OHARA)
L5Negative MeniscusS-LAL14 (OHARA, 697555) / LaK8 class
L6Biconvex Positive593348 — LF7-class light flint (no exact public catalog match)
L7Positive MeniscusS-LAM52 (OHARA, 720437) / LaF3 class
L8Biconcave NegativeS-NPH53 (OHARA, 847239) / SF57 class
L9Biconvex Positive713539 — LaK21 / LAC11-class lanthanum crown (no exact public catalog match)
L10Negative MeniscusS-LAL10 (OHARA, 720502) / LaK14 class
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Positive Meniscus	639449 — LAC14 / BaLF5-class barium lanthanum flint (no exact public catalog match)
L2	Negative Meniscus	S-LAL59 (OHARA, 734515) / LaK9 class
L3	Negative Meniscus	S-LAH66 (OHARA)
L4a	Plano-Convex	F2 / TIF1 (Schott / OHARA)
L4b	Plano-Convex	F2 / TIF1 (Schott / OHARA)
L5	Negative Meniscus	S-LAL14 (OHARA, 697555) / LaK8 class
L6	Biconvex Positive	593348 — LF7-class light flint (no exact public catalog match)
L7	Positive Meniscus	S-LAM52 (OHARA, 720437) / LaF3 class
L8	Biconcave Negative	S-NPH53 (OHARA, 847239) / SF57 class
L9	Biconvex Positive	713539 — LaK21 / LAC11-class lanthanum crown (no exact public catalog match)
L10	Negative Meniscus	S-LAL10 (OHARA, 720502) / LaK14 class