US 8,755,132 B2 Example 1 — Olympus / Yamada & Kimata
| 6 elements / 4 groups |
| f = 17 mm (design 17.30 mm) |
| f/2.8 (design F/2.897) |
| 64.9° diagonal AoV |
| 2 aspherical surfaces / 1 aspherical element |
Unit focus. The full optical system translates; the sensor cover glass is omitted and folded into the BFD.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | S-FSL5 (OHARA) |
| L21 | Biconvex Positive | S-LAH60 (OHARA) |
| L22 | Biconcave Negative | S-TIL27 (OHARA) |
| L23 | Biconcave Negative | FF8 (HOYA) |
| L24 | Biconvex Positive | S-LAL18 (OHARA) |
| L25 | Biconvex Positive (2× Asph) | S-LAH53 (OHARA) / P-LASF47 class (806/409) |
Detailed analysis available in the interactive viewer above.