JP 2023-029039 A Example 2
| 13 elements / 8 groups |
| f = 54.453 mm design; 56 mm marketed |
| F1.2 marketed; FNo. 1.24 design |
| 2ω = 29.06° design; 28.5° marketed |
| 2 aspherical elements / 1 ED element |
Internal unit focus: G2 and the aperture stop translate objectward; G1 and G3 remain fixed.
| Element | Type | Glass |
|---|---|---|
| L11 | Positive / near plano-convex | 620/604 dense crown; Hoya BACD16 / Ohara S-BSM16 class |
| L12 | Negative / near plano-concave | NBFD25 (Hoya, 855/252) |
| L21 / Lp1 | Positive Meniscus | S-NPH3 (Ohara, 959/175) |
| L22 | Positive | FCD705 (Hoya, 550/755 ED) |
| L23 | Negative | E-FDS1 (Hoya) / N-SF66 (Schott) class, 923/209 |
| L24 | Positive Meniscus (2× Asph) | 582/594 moldable crown; Hoya M-BACD12 class (inferred) |
| L25 | Biconcave Negative | S-TIH11 (Ohara) / FD110 (Hoya) class, 785/257 |
| L26 | Biconvex Positive | S-LAH59 (Ohara) / TAF5 (Hoya) class, 816/466 |
| L27 / Ln2 | Biconcave Negative | S-NBM51 (Ohara) / H-TF3L (CDGM) class, 613/442 |
| L28 / Lp2 | Biconvex Positive | TAFD65 (Hoya, 051/269) |
| L31 | Biconvex Positive | TAFD55 (Hoya) / S-LAH99 (Ohara) class, 001/291 |
| L32 | Biconcave Negative | S-NBH58 (Ohara, 789/284) |
| L33 | Negative Meniscus (2× Asph) | 689/312 flint; E-FD8 / J-SF8 class (inferred) |
Detailed analysis available in the interactive viewer above.