US 2014/0240851 A1 Example 4 — Kawamura / Fujifilm
| 8 ELEMENTS / 7 GROUPS |
| f ≈ 18.8 mm |
| F/2.06 |
| 2ω ≈ 76.5° |
| 4 ASPHERICAL SURFACES (2 GLASS-MOLD ELEMENTS) |
Unit focusing — entire optical assembly translates along the optical axis.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconcave Negative | S-NSL36 (OHARA) |
| L2 | Positive Meniscus | S-LAH55V (OHARA) |
| L3 | Negative Meniscus | E-FD2 (HOYA) |
| L4 | Biconvex Positive | S-LAH65V (OHARA) |
| L5 | Biconvex Positive (2× Asph) | S-LAH63 (OHARA, glass-mold) |
| L6 | Biconcave Negative | S-NPH2 (OHARA) |
| L7 | Neg. Meniscus (2× Asph) | S-LAH63 (OHARA, glass-mold) |
| L8 | Biconvex Positive | S-LAH55VS (OHARA) |
Detailed analysis available in the interactive viewer above.