WO 2025/220324 A1 — Hiroo Juri, Naoto Kikuchi, Hiraku Iwaya
| 19 ELEMENTS / 17 GROUPS |
| DESIGN 51.50-145.50 mm |
| DESIGN f/2.06 |
| INTERNAL ZOOM / FLOATING FOCUS |
| 7 ASPHERICAL SURFACES |
Published two-group floating focus: G5 moves imageward and G6 moves objectward. The authored close states are the patent Table 3 values at 0.397 m, 0.521 m, and 0.746 m for Wide/Mid/Tele; no internal focus reconstruction is used.
| Element | Type | Glass |
|---|---|---|
| E1 | Negative Meniscus, convex to object | 806333 class (supplier unproven) |
| E2 | Biconvex Positive | 437951 class (supplier unproven) |
| E3 | Positive Meniscus, convex to object | 437951 class (supplier unproven) |
| E4 | Negative Meniscus (2× Asph) | 768492 class (supplier unproven) |
| E5 | Biconcave Negative | 729547 class (supplier unproven) |
| E6 | Biconvex Positive | NBFD27 — coordinate-compatible spectral proxy (supplier unresolved) |
| E7 | Negative Meniscus, convex to image | 550755 class (supplier unproven) |
| E8 | Biconvex Positive (2× Asph) | 694532 class (supplier unproven) |
| E9 | Biconcave Negative | 954323 class (supplier unproven) |
| E10 | Biconvex Positive | 764485 class (supplier unproven) |
| E11 | Negative Meniscus, convex to object | S-NBH59 — coordinate-compatible spectral proxy (supplier unproven) |
| E12 | Biconvex Positive | 497816 class (supplier unproven) |
| E13 | Biconvex Positive | 593686 class (supplier unproven) |
| E14 | Biconvex Positive | 870200 class (supplier unproven) |
| E15 | Biconcave Negative | 613443 class (supplier unproven) |
| E16 | Biconvex Positive (1× Asph) | M-PCD51 — coordinate-compatible spectral proxy (supplier unproven) |
| E17 | Positive Meniscus, convex to image | 648338 class (supplier unproven) |
| E18 | Negative Meniscus, convex to image (2× Asph) | 768492 class (supplier unproven) |
| E19 | Negative Meniscus, convex to image | 954323 class (supplier unproven) |