US 2024/0329367 A1 EXAMPLE 1 — CANON / HAGIWARA
| 15 ELEMENTS / 12 GROUPS |
| f = 28.80–67.90 mm (2.36×) |
| F/2.88–2.92 |
| 2ω = 69.9–35.3° |
| 4 ASPHERICAL SURFACES (2 GMo ELEMENTS) |
| 2 UD ELEMENTS |
Rear inner focus via B6 (L13). Patent §0042/§0065: B6 moves toward image side from ∞ to close. Close-focus spacings not provided in Example 1; zoom-only gaps encoded.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive | S-FPL51 (OHARA) |
| L2 | Negative Meniscus | 892371 — S-LAH66 family (OHARA) |
| L3 | Biconcave Negative | 603606 — S-BSL7 family (OHARA) |
| L4 | Positive Meniscus | 904313 — S-LAH58 family (OHARA) |
| L5 | Negative Meniscus | 851408 — S-LAH65V (OHARA) |
| L6 | Plano-Convex Positive | 001291 — S-NPH4 family (OHARA) |
| L7 | Biconvex Positive (2× Asph) | L-BAL42 (OHARA) |
| L8 | Biconcave Negative | 770297 — S-TIH18 family (OHARA) |
| L9 | Plano-Concave Negative | 855248 — S-TIH53W family (OHARA) |
| L10 | Biconvex Positive | S-FPL51 (OHARA) |
| L11 | Biconvex Positive (2× Asph) | L-BAL42 (OHARA) |
| L12 | Biconvex Positive | 595677 — S-BSM14 family (OHARA) |
| L13 | Negative Meniscus | 613443 — S-BAH11 family (OHARA) |
| L14 | Biconcave Negative | 744448 — S-LAL14 family (OHARA) |
| L15 | Biconvex Positive | S-NPH2 (OHARA) |
Detailed analysis available in the interactive viewer above.