WO 2023/190222 A1 Example 1 — NIKON / MAKIDA
| 8 ELEMENTS / 4 GROUPS |
| f = 26.78 mm |
| F/2.8 |
| 2ω ≈ 80.6° |
| 4 ASPHERICAL SURFACES |
Unit focus — entire optical system translates along the optical axis (extends ~5mm at MFD).
| Element | Type | Glass |
|---|---|---|
| L1 | Pos. Meniscus (1× Asph) | S-BAL35 (OHARA) |
| L2 | Biconcave Negative | S-TIM2 (OHARA) |
| L3 | Biconvex Positive | S-LAH58 (OHARA) |
| L4 | Biconvex Positive | S-LAH59 (OHARA) |
| L5 | Biconcave Negative | N-F2 (Schott) |
| L6 | Pos. Meniscus (2× Asph) | L-BAL42 (OHARA, PGM) |
| L7 | Negative Meniscus | SF4 (Schott) |
| L8a | Asph. Resin Layer (1× Asph) | UV-curing resin (composite asphere) |
| L8b | Positive Meniscus | S-LAH58 (OHARA) |
Detailed analysis available in the interactive viewer above.