US 2022/0011542 A1, Example 1 — Hiroki Saito
| 15 ELEMENTS / 9 GROUPS |
| 18 mm MARKETING / 17.8993 mm MODELED EFL |
| F/1.44 DESIGN |
| 5 ASPHERICAL SURFACES |
Inner focus: G2 (L21–L26) moves 2.50 mm toward the object. The published close state places the object 110 mm ahead of the first surface; the other groups and image plane stay fixed.
| Element | Type | Glass |
|---|---|---|
| L11 | Neg. Meniscus (2× Asph) | 583595 — crown class (supplier unresolved) |
| L12 | Biconcave Negative | 583595 — crown class (supplier unresolved) |
| L13 | Biconvex Positive | 892371 — high-index lanthanum-flint class (supplier unresolved) |
| L14 | Biconcave Negative | 487704 — low-dispersion crown class (supplier unresolved) |
| L15 | Pos. Meniscus (1× Asph) | 583595 — crown class (supplier unresolved) |
| L16 | Negative Meniscus | 001254 — high-index flint class (supplier unresolved) |
| L17 | Biconvex Positive | 954323 — high-index lanthanum class (supplier unresolved) |
| L21 | Biconvex Positive | 593686 — FCD515-compatible ED crown proxy (supplier unresolved) |
| L22 | Plano-Concave Negative | 855252 — dense-flint class (supplier unresolved) |
| L23 | Plano-Convex Positive | 773496 — high-index moderate-dispersion class (supplier unresolved) |
| L24 | Negative Meniscus | 855252 — dense-flint class (supplier unresolved) |
| L25 | Biconvex Positive | 003193 — high-index high-dispersion class (supplier unresolved) |
| L26 | Neg. Meniscus (2× Asph) | 806407 — high-index moderate-dispersion class (supplier unresolved) |
| L31 | Biconvex Positive | 603655 — phosphate-crown class (supplier unresolved) |
| L32 | Plano-Concave Negative | 847238 — dense-flint class (supplier unresolved) |