JP 2010-186010 A, Numerical Example 1 — Yasuharu Yamada, Takeshi Hosoya
| 9 ELEMENTS / 8 GROUPS |
| DESIGN f = 14.29-41.19 mm |
| DESIGN F/3.63-5.76 |
| 4 ASPHERICAL SURFACES / 2 ELEMENTS |
| 1 ED / 1 HR ELEMENT |
The patent prints infinity spacings at wide, middle and tele only. It focuses by moving G1 alone toward the object (claim 3) but prints no near-focus spacings, so focusing is not modeled. The intermediate zoom positions are an inferred reconstruction, not the factory cam: the G1–G2 spacing follows a piecewise-linear law between the printed stations and the G2–G3 spacing is solved for infinity focus at each position. The marketed minimum focus distance is 0.25 m.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | S-LAH66 (OHARA catalog equivalent; production supplier unspecified) |
| L12 | Aspherical Negative Meniscus | Unmatched (optical plastic, printed nd 1.52542 / νd 55.78; polymer unpublished) |
| L13 | Positive Meniscus | FDS90 (HOYA catalog equivalent; production supplier unspecified) |
| L21 | Plano-Convex Positive | S-LAH55 (OHARA catalog equivalent; production supplier unspecified) |
| L22 | Biconvex Positive | S-FPL51 (OHARA catalog equivalent; production supplier unspecified) |
| L23 | Biconcave Negative | TAFD25 (HOYA catalog equivalent; production supplier unspecified) |
| L24 | Positive Meniscus | S-BAH27 (OHARA catalog equivalent; production supplier unspecified) |
| L25 | Biconvex Positive | S-NSL3 (OHARA catalog equivalent; production supplier unspecified) |
| L3 | Aspherical Positive Meniscus | Unmatched (optical plastic, printed nd 1.52542 / νd 55.78; polymer unpublished) |