JP 2026-98935 A — Nozomu Mishima
| 12 ELEMENTS / 8 GROUPS |
| 28mm f/2 (PRODUCTION) |
| f = 28.84mm / F2.06 (PATENT) |
| 2ω = 74.04° |
| 4 ASPHERICAL SURFACES |
| 6 / 12 APD GLASS ELEMENTS |
| DOUBLE-FLOATING FOCUS |
PUBLISHED double-floating endpoints: G1 and G2 move independently toward the object; D11 3.83→3.36 mm and BF 18.21→20.28 mm. The printed endpoint is preserved although its first-order object-to-image matrix has B = +6.097 mm.
| Element | Type | Glass |
|---|---|---|
| L9 | Neg. Meniscus (2× Asph) | H-K9LGT (CDGM) equivalent — 517642 |
| L10f | Positive Meniscus | S-LAH89 (OHARA) equivalent — 852408 |
| L10r | Negative Meniscus | S-NBH58 (OHARA) equivalent — 789284 |
| L11 | Biconvex Positive | TAFD55 (HOYA) equivalent — 001291 |
| L12f | Biconvex Positive | TAFD37A (HOYA) equivalent — 900374 |
| L12r | Biconcave Negative | NBFD25 (HOYA) equivalent — 855252 |
| L13f | Biconcave Negative | S-NBH8 (OHARA) equivalent — 720347 |
| L13r | Biconvex Positive | J-PSKH8 (HIKARI) equivalent — 628592 |
| L14 | Biconvex Positive | S-LAH93 (OHARA) equivalent — 905350 |
| L15f | Biconvex Positive | FCD705 (HOYA) equivalent — 550755 |
| L15r | Biconcave Negative | S-NBH8 (OHARA) equivalent — 720347 |
| L16 | Biconcave Negative (2× Asph) | Unmatched (806407 class; HIKARI Q-LASF03S line-index proxy; no joint nd/νd/ΔPgF match) |