US 2015/0316753 A9 — Masaharu Hosoi
| 9 ELEMENTS / 8 GROUPS |
| 16-50mm f/3.5-5.6 (MARKETED) |
| 16.48-48.50mm f/3.61-5.77 (PATENT) |
| 4 ASPHERICAL ELEMENTS / 6 ASPHERICAL SURFACES |
| OPTICAL STEADYSHOT |
NO_INTERNAL_RECONSTRUCTION: the patent identifies GR3 as the axial focus group, but Example 1 publishes only infinity-focus zoom spacings. The authored model therefore preserves infinity focus at both focus endpoints; Sony's marketed MFD is 0.25-0.30 m.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus (1× Asph) | TAFD30 (HOYA; patent νd=40.80, pre-2019 catalog rounding) |
| L2 | Positive Meniscus | E-FDS2 (HOYA) |
| L3 | Positive Meniscus (2× Asph) | M-LAC130 (HOYA) |
| L4 | Biconvex Positive | FCD1 (HOYA) |
| L5 | Biconcave Negative | NBFD10 (HOYA) |
| L6 | Biconvex Positive | FC5 (HOYA) |
| L7 | Biconvex Positive | FC5 (HOYA) |
| L8 | Biconcave Negative (1× Asph) | 697-555 — HOYA LAC14/M-LAC14 coordinate family |
| L9 | Biconvex Positive (2× Asph) | 806407 — NBFD13 / M-NBFD130 coordinate family (supplier unresolved) |