OLYMPUS ZUIKO AUTO-MACRO 90mm f/2 — Optical Cross-Section & Ray Tracing

Home / Lenses / Olympus / OLYMPUS ZUIKO AUTO-MACRO 90mm f/2OLYMPUS ZUIKO AUTO-MACRO 90mm f/2US 4,792,219 EMBODIMENT 3 — OLYMPUS / MIHARA
9 ELEMENTS / 9 GROUPS
f ≈ 90.0 mm
F/2.0
2ω ≈ 27°
ALL SPHERICAL
Focus MechanismDifferential-speed whole-lens advance. Groups I+II advance as a unit; Group III advances at 63% of subsystem speed. Single variable gap d₁₃ expands from 0.80 mm (∞) to 18.25 mm (1/2×). Helicoid travel ≈ 47 mm.
Optical Elements (9)ElementTypeGlass
L1Positive MeniscusS-LAL14 (OHARA) / TAC4 class (HOYA, 697555)
L2Positive MeniscusN-LAK8 (Schott) / TACL1 class (HOYA, 713538)
L3Negative MeniscusS-TIH3 (OHARA) / FD4 class (HOYA, 740283)
L4Negative MeniscusS-TIL26 (OHARA) / BACL1 class (HOYA, 567428)
L5Positive Meniscus744447 — LAF7-class lanthanum flint (HOYA; no exact public catalog match)
L6Biconvex Positive773497 — TAFL3-class lanthanum crown (HOYA; no exact public catalog match)
L7Biconcave NegativeS-NSL36 (OHARA) / CFKL2 class (HOYA, 517524)
L8Negative MeniscusS-TIM35 (OHARA) / FD5 class (HOYA, 699301)
L9Biconvex PositiveS-LAL7 (OHARA)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Positive Meniscus	S-LAL14 (OHARA) / TAC4 class (HOYA, 697555)
L2	Positive Meniscus	N-LAK8 (Schott) / TACL1 class (HOYA, 713538)
L3	Negative Meniscus	S-TIH3 (OHARA) / FD4 class (HOYA, 740283)
L4	Negative Meniscus	S-TIL26 (OHARA) / BACL1 class (HOYA, 567428)
L5	Positive Meniscus	744447 — LAF7-class lanthanum flint (HOYA; no exact public catalog match)
L6	Biconvex Positive	773497 — TAFL3-class lanthanum crown (HOYA; no exact public catalog match)
L7	Biconcave Negative	S-NSL36 (OHARA) / CFKL2 class (HOYA, 517524)
L8	Negative Meniscus	S-TIM35 (OHARA) / FD5 class (HOYA, 699301)
L9	Biconvex Positive	S-LAL7 (OHARA)