JP 2013-254160 A — Noriyuki Adachi
| 19 ELEMENTS / 15 GROUPS |
| 28-300mm marketed; 28.776-291.262mm patent states |
| FNO 3.628 / 3.628 / 6.459 modeled |
| 5 ASPHERICAL SURFACES |
| 5-GROUP +−+−+ ZOOM |
NO_INTERNAL_RECONSTRUCTION — patent Example 7 publishes infinity-focus zoom states only; product MOD 0.49 m is metadata and no close-focus internal motion is invented.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | TAFD55-W (HOYA) |
| L2 | Biconvex Positive | FCD1 (HOYA) |
| L3 | Positive Meniscus | FCD515 (HOYA) |
| L4 | Positive Meniscus | TAC8 (HOYA) |
| L5 | Neg. Meniscus (2× Asph) | M-TAFD305 (HOYA) |
| L6 | Biconcave Negative | TAF1 (HOYA) — 773496 class proxy, Δνd=+0.03 |
| L7 | Biconvex Positive | FDS90-SG (HOYA) |
| L8 | Biconcave Negative | TAF1 (HOYA) — 773496 class proxy, Δνd=+0.03 |
| L9 | Biconvex Positive | TAC8 (HOYA) |
| L10 | Biconvex Positive | S-FPL51 (OHARA) |
| L11 | Biconvex Positive (1× Asph) | M-BACD15 (HOYA) — 623582 class proxy, Δνd=+0.01 |
| L12 | Negative Meniscus | E-FDS1-W (HOYA) |
| L13 | Biconcave Negative (1× Asph) | M-TAFD51 (HOYA) |
| L14 | Positive Meniscus | FD225 (HOYA) |
| L15 | Biconvex Positive | S-FPL51 (OHARA) |
| L16 | Negative Meniscus | NBFD15-W (HOYA) |
| L17 | Biconvex Positive | S-NSL36 (OHARA) |
| L18r | Hybrid Asphere Resin Layer | Unmatched (hybrid asphere resin layer, nd=1.51460, νd=49.96) |
| L18 | Biconcave Negative Substrate | S-LAH52 (OHARA) |
| L19 | Positive Meniscus | FD60-W (HOYA) |