JP 2010-211056 A, Example 1 — Kenta Fujita
| 16 ELEMENTS / 12 GROUPS |
| DESIGN f = 18.60–48.32 mm |
| DESIGN F/2.92–4.49 |
| 3 ASPHERICAL SURFACES / 3 ELEMENTS |
| INNER ZOOM / INNER FOCUS |
G2 moves toward the object for near focus, but the patent prints infinity focus only, so the model stays at infinity and the focus control does not change the optics. The 0.3 m close-focus figure is Sigma's specification. Spacings are printed at 18.60, 27.99 and 48.32 mm; those between are inferred, not a published cam. The optical stabilizer shift is not modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | TAF1 (HOYA catalog equivalent; production supplier unspecified) |
| R1 | Hybrid Aspheric Resin Layer (1× Asph) | Unmatched (hybrid optical resin; catalog identity unpublished) |
| L2 | Biconvex Positive | FDS90 (HOYA catalog equivalent; production supplier unspecified) |
| L3 | Biconcave Negative | TAF1 (HOYA catalog equivalent; production supplier unspecified) |
| L4 | Biconcave Negative | TAC8 (HOYA catalog equivalent; production supplier unspecified) |
| L5 | Positive Meniscus | FDS90 (HOYA catalog equivalent; production supplier unspecified) |
| L6 | Positive Meniscus (1× Asph) | M-BACD5N (HOYA moulding glass, coordinate proxy; patent nd=1.5876, νd=61.08; production supplier unspecified) |
| L7 | Negative Meniscus | FDS90 (HOYA catalog equivalent; production supplier unspecified) |
| L8 | Positive Meniscus | TAF1 (HOYA catalog equivalent; production supplier unspecified) |
| L9 | Positive Meniscus | FCD1 (HOYA catalog equivalent; production supplier unspecified) |
| L10 | Biconcave Negative | TAF1 (HOYA catalog equivalent; production supplier unspecified) |
| L11 | Biconcave Negative | TAF1 (HOYA catalog equivalent; production supplier unspecified) |
| L12 | Biconvex Positive | FDS90 (HOYA catalog equivalent; production supplier unspecified) |
| L13 | Biconvex Positive | FCD1 (HOYA catalog equivalent; production supplier unspecified) |
| L14 | Positive Meniscus | TAF1 (HOYA catalog equivalent; production supplier unspecified) |
| L15 | Plano-Concave Negative | FDS90 (HOYA catalog equivalent; production supplier unspecified) |
| R2 | Hybrid Aspheric Resin Layer (1× Asph) | Unmatched (hybrid optical resin; catalog identity unpublished) |
| L16 | Positive Meniscus | FC5 (HOYA catalog equivalent; production supplier unspecified) |