US 4,568,150 Embodiment 4 — Olympus Optical / Ikari & Fujii
| 14 elements / 11 groups |
| f = 66.923-194.149 mm design |
| Computed F/4.24 design aperture; f/4 marketed |
| 35 mm full-frame format |
| All-spherical |
Front-group manual focus in production; patent US 4,568,150 publishes only infinity-focus zoom spacings, so close-focus travel is intentionally not modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-TIH11 (OHARA; N-SF11 class) |
| L2 | Plano-Convex Positive | S-BSM15 (OHARA) |
| L3 | Plano-Convex Positive | S-BSM15 (OHARA) |
| L4 | Biconcave Negative | S-LAM60 (OHARA; patent vd = 49.31) |
| L5 | Positive Meniscus | S-TIH11 (OHARA; N-SF11 class) |
| L6 | Biconcave Negative | S-LAH66 (OHARA; patent vd = 49.66) |
| L7 | Biconvex Positive | S-TIH11 (OHARA; N-SF11 class) |
| L8 | Biconvex Positive | 511605 crown class (CDGM H-K6 / legacy OHARA NSL7) |
| L9 | Negative Meniscus | S-TIH11 (OHARA; N-SF11 class) |
| L10 | Plano-Convex Positive | 500660 crown class (CDGM H-K2 / OHARA BSL4) |
| L11 | Biconcave Negative | S-LAH53 (OHARA; patent vd = 40.95) |
| L12 | Biconvex Positive | S-NSL36 (OHARA; patent vd = 52.41) |
| L13 | Negative Meniscus | S-LAH66 (OHARA; patent vd = 49.66) |
| L14 | Biconvex Positive | 511605 crown class (CDGM H-K6 / legacy OHARA NSL7) |
Detailed analysis available in the interactive viewer above.