JP 2025-186709 A — Kyosuke Murakami
| 14 ELEMENTS / 12 GROUPS |
| f ≈ 12.3301 mm |
| F/1.46 (PATENT) |
| 2ω = 103.29° (PATENT, INFINITY) |
| 6 ASPHERICAL SURFACES |
PUBLISHED: negative G2 (surfaces 9–10) moves 1.4959 mm objectward; D8 decreases and D10 increases. The source 170 mm heading resolves to 170.3769 mm object-to-image from d0 plus track. Intermediate positions use native linear gap interpolation and are not published conjugates. Production MFD is 172 mm.
| Element | Type | Glass |
|---|---|---|
| L1 | Neg. Meniscus (2× Asph) | M-LAC130 / P-LAK35 class (supplier unconfirmed) |
| L2 | Negative Meniscus | PCD4 / K-PSKn2 class (supplier unconfirmed) |
| L3 | Biconcave Negative | FCD515 / FCD505 class (supplier unconfirmed) |
| L4 | Biconvex Positive | FDS18 class (HOYA coordinate proxy; supplier unconfirmed) |
| L5 | Negative Meniscus | NBFD27 class (supplier unconfirmed) |
| L6 | Biconvex Positive (2× Asph) | M-NBFD130 / NBFD13 class (supplier unconfirmed) |
| L7 | Biconcave Negative | E-FD15 class (supplier unconfirmed) |
| L8 | Biconvex Positive | TAC6 / S-LAH97 class (supplier unconfirmed) |
| L9 | Positive Meniscus | S-LAL58 / LAL58 class (supplier unconfirmed) |
| L10 | Biconcave Negative | FDS18 class (HOYA coordinate proxy; supplier unconfirmed) |
| L11 | Negative Meniscus | FDS90-SGP class (supplier unconfirmed) |
| L12 | Positive Meniscus | FCD515 / FCD505 class (supplier unconfirmed) |
| L13 | Biconvex Positive | FDS16-W class (supplier unconfirmed) |
| L14 | Biconcave Negative (2× Asph) | M-NBFD130 / NBFD13 class (supplier unconfirmed) |