JP 2021-076740 A — Yasuyuki Sugano, Hirokazu Shimada
| 11 ELEMENTS / 8 GROUPS |
| EFL 58.145 mm MODEL / 58.15 mm PATENT |
| 60 mm / f/0.95 MARKETED |
| F/0.93 / 2ω = 21.58° PATENT |
| 21.5° MARKETED AOV |
| 2 APD ELEMENTS (MANUFACTURER-MARKED) |
| ALL-SPHERICAL |
PUBLISHED two-unit floating focus: G1+G2 move together while STO+G3 move independently. The data endpoints reproduce the patent infinity and 0.20× states; the published 0.10× state is audit-verified but not a discrete schema point. closeFocusM=0.34 m is the manufacturer product specification; no 0.25× internal state is reconstructed.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconcave Negative | Unmatched (656337 medium-flint class) |
| L2 | Biconvex Positive | FCD1 (HOYA optical equivalent; patent vendor unspecified) |
| L3 | Positive Meniscus | Unmatched (852428 high-index lanthanum-crown class) |
| L4 | Positive Meniscus | MC-TAF101-100 (HOYA optical equivalent; patent vendor unspecified) |
| L5 | Near-Plano-Convex Positive | Unmatched (578671 low-dispersion crown class) |
| L6 | Negative Meniscus | NBFD15 (HOYA optical equivalent; patent vendor unspecified) |
| L7 | Near-Plano-Concave Negative | Unmatched (662331 APD flint; maker-marked, line data unpublished) |
| L8 | Near-Plano-Convex Positive | Unmatched (876363 high-index lanthanum-flint class) |
| L10 | Biconcave Negative | E-FD4 (HOYA optical equivalent; patent vendor unspecified) |
| L9 | Biconvex Positive | S-LAH58 (OHARA optical equivalent; patent vendor unspecified) |
| L11 | Positive Meniscus | S-LAH58 (OHARA optical equivalent; patent vendor unspecified) |