US 6,246,529 B1, Example 5 — Takayuki Sensui
| 10 ELEMENTS / 8 GROUPS |
| DESIGN f = 20.60-34.01 mm |
| DESIGN F/4 |
| 2 ASPHERICAL SURFACES / 2 ELEMENTS (1 HYBRID) |
The patent prints infinity spacings at wide and tele only; focusing is not modeled. The intermediate zoom positions are an inferred reconstruction, not the factory cam: the G2–stop spacing and the back focus follow linear laws between the printed stations and the G1–G2 spacing is solved for infinity focus at each position. The marketed minimum focus distance is 0.3 m.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-LAH66 (OHARA catalog equivalent; production supplier unspecified) |
| L2 | Negative Meniscus | S-LAH65V (OHARA catalog equivalent; production supplier unspecified) |
| L2R | Negative Meniscus (1× Asph) | Unmatched (patent resin; supplier unconfirmed) |
| L3 | Positive Meniscus | S-TIH53 (OHARA catalog equivalent; production supplier unspecified) |
| L4 | Biconvex Positive | S-NSL36 (OHARA catalog equivalent; production supplier unspecified) |
| L5 | Negative Meniscus | S-LAH65V (OHARA catalog equivalent; production supplier unspecified) |
| L6 | Plano-convex Positive | S-BSM28 (OHARA catalog equivalent; production supplier unspecified) |
| L7 | Biconvex Positive | S-FSL5 (OHARA catalog equivalent; production supplier unspecified) |
| L8 | Biconcave Negative | S-LAH53 (OHARA catalog equivalent; production supplier unspecified) |
| L9 | Negative Meniscus | S-TIH53 (OHARA catalog equivalent; production supplier unspecified) |
| L10 | Positive Meniscus (1× Asph) | J-SK5 (HIKARI catalog equivalent; production supplier unspecified) |