JP 2018-205474 A, Numerical Data 1 — Masakazu Yamagishi
| 11 elements / 9 groups |
| Patent f = 55.986 mm; scaled ×1.60754 |
| Computed scaled EFL ≈ 89.96 mm |
| F/2.91 design; f/2.8 marketed |
| Source image-height circle ≈ 69.4 mm; illumination not certified |
| Patent prescription all spherical |
Published infinity/near gaps are retained at the existing uniform scale. The 0.39 m display endpoint is the production label; Gaussian conjugates are computed separately. Intermediate control states and rigid perspective poses are illustrative, not source-tabulated trajectories or measured moved-optics behavior.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-NSL36 (qualified proxy) |
| L2 | Positive Meniscus | S-LAH55V (qualified proxy) |
| L3 | Biconcave Negative | N-KZFS5 (qualified proxy) |
| L4 | Biconvex Positive | TAFD35 (qualified proxy) |
| L5 | Biconvex Positive | S-FPL51 (qualified proxy) |
| L6 | Biconcave Negative | S-NBH52 (qualified proxy) |
| L7 | Negative Meniscus | S-LAM7 (qualified proxy) |
| L8 | Positive Meniscus | S-LAH66 (qualified proxy) |
| L9 | Biconvex Positive | S-FPM2 (qualified proxy) |
| L10 | Biconcave Negative | S-BAL3 (qualified proxy) |
| L11 | Positive Meniscus | S-LAH60V (qualified proxy) |