US 2015/0212302 A1 Example 3 — Fujifilm / Suzuki
| 11 ELEMENTS / 8 GROUPS |
| f ≈ 56.99 mm |
| F/1.25 |
| 2ω ≈ 28.0° |
| 2 ASPHERICAL SURFACES (even-order only) |
Inner focus — L21 through L24 move toward object; G1 and L25 fixed.
| Element | Type | Glass |
|---|---|---|
| L11 | Positive Meniscus | S-FSL5 (OHARA) |
| L12 | Positive Meniscus | S-FPL51 (OHARA) — ED |
| L13 | Positive Meniscus | S-FPL51 (OHARA) — ED |
| L14 | Positive Meniscus | S-LAH58 (OHARA) |
| L15 | Negative Meniscus | FF8 (HOYA fluor flint) |
| L16 | Negative Meniscus | S-NBH52 (OHARA) |
| L21 | Biconcave Neg. (2× Asph) | L-BAL42 (OHARA) — PGM |
| L22 | Positive Meniscus | S-LAH58 (OHARA) |
| L23 | Biconcave Negative | S-TIF6 (OHARA) |
| L24 | Biconvex Positive | S-LAH58 (OHARA) |
| L25 | Biconvex Positive | S-FSL5 (OHARA) |
Detailed analysis available in the interactive viewer above.