US 2012/0013996 A1 Example 1 — Canon / Okumura
| 14 elements / 11 groups |
| 8-15 mm marketed; 8.05-15.14 mm design |
| f/4 marketed; F/4.12 patent design |
| 180° circular-to-diagonal fisheye coverage |
| 1 glass-molded aspherical surface |
Inner focus by translating L12 (element L5, surfaces 9A-10). Close-focus D8/D10 values are paraxial estimates to the official 0.15 m MFD because the patent publishes infinity zoom spacings only.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-LAH65V (OHARA) |
| L2 | Negative Meniscus | FCD505 / FCD515 class (HOYA) |
| L3 | Biconcave Negative | FCD505 / FCD515 class (HOYA) |
| L4 | Biconvex Positive | S-TIH6 (OHARA) |
| L5 | Neg. Meniscus (1× Asph) | M-TAFD305 (HOYA) |
| L6 | Biconvex Positive | S-LAH58 (OHARA) / TAFD33 class |
| L7 | Biconcave Negative | S-LAH58 (OHARA) / TAFD33 class |
| L8 | Biconvex Positive | S-NSL3 (OHARA) |
| L9 | Biconvex Positive | S-FSL5 (OHARA) |
| L10 | Negative Meniscus | S-LAH58 (OHARA) / TAFD33 class |
| L11 | Biconvex Positive | S-FTM16 (OHARA) |
| L12 | Plano-Concave Negative | S-LAH60V (OHARA) |
| L13 | Biconvex Positive | S-FPL51 (OHARA) / FCD1 class |
| L14 | Positive Meniscus | S-FSL5 (OHARA) |
Detailed analysis available in the interactive viewer above.