US 2016/0274335 A1, Example 1 — Daiki Kawamura
| 11 ELEMENTS / 8 GROUPS |
| f ≈ 87.5 mm (marketed 90 mm) |
| F/2.06 (marketed F/2.0) |
| 2ω ≈ 18.4° |
| 3 ED ELEMENTS |
| ALL SPHERICAL |
Inner focus — only the G2 cemented doublet (L21+L22) moves, 8.1 mm toward the image from infinity to the patent's proximal state (β ≈ −0.14, about 0.82 m). Production MFD 0.6 m (0.2×) is beyond the published data and is not modeled.
| Element | Type | Glass |
|---|---|---|
| L11 | Biconvex Positive | S-BSL7 (OHARA) |
| L12 | Plano-Convex Positive | FCD1 (HOYA) |
| L13 | Biconvex Positive | S-FPM2 (OHARA) |
| L14 | Biconcave Negative | S-NBH51 (OHARA) |
| L21 | Positive Meniscus | S-NPH2 (OHARA) |
| L22 | Biconcave Negative | S-BSM18 (OHARA) |
| L31 | Positive Meniscus | S-FPM2 (OHARA) |
| L32 | Biconvex Positive | S-LAH55VS (OHARA) |
| L33 | Biconcave Negative | S-TIM25 (OHARA) |
| L34 | Biconvex Positive | S-LAL8 (OHARA) |
| L35 | Biconcave Negative | S-NSL36 (OHARA; exact patent coordinate match) |