JP 2017-156719 A, Numerical Example 1 — Ryo Shioda
| 19 ELEMENTS / 14 GROUPS |
| DESIGN f = 24.84–67.55 mm |
| DESIGN F/2.93 |
| 7 ASPHERICAL SURFACES / 4 ELEMENTS |
Patent paragraph 0060 specifies that G2 moves toward the object for closer focus, but gives no finite-distance spacings or travel. Focusing is not modeled. The intermediate zoom stations are solved for infinity focus between the three printed stations; they do not reproduce the factory cam. The marketed minimum focus distance is 0.37 m.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | E-FDS1 (HOYA catalog equivalent; production supplier unspecified) |
| L2 | Biconvex Positive | TAC8 (HOYA catalog equivalent; production supplier unspecified) |
| L3 | Positive Meniscus | TAF3 (HOYA catalog equivalent; production supplier unspecified) |
| L4 | Double Aspherical Negative Meniscus (convex to object) | M-TAFD305 (HOYA catalog equivalent; production supplier unspecified) |
| L5 | Biconcave Negative | TAC8 (HOYA catalog equivalent; production supplier unspecified) |
| L6 | Positive Meniscus | TAFD5G (HOYA catalog equivalent; production supplier unspecified) |
| L7 | Biconvex Positive | FD225 (HOYA catalog equivalent; production supplier unspecified) |
| L8 | Negative Meniscus | TAFD30 (HOYA catalog equivalent; production supplier unspecified) |
| L9 | Double Aspherical Biconvex Positive | M-NBFD130 (HOYA catalog equivalent; production supplier unspecified) |
| L10 | Biconvex Positive | PCD40 (HOYA catalog equivalent; production supplier unspecified) |
| L11 | Negative Meniscus | S-NBH56 (OHARA catalog equivalent; production supplier unspecified) |
| L12 | Biconvex Positive | FCD1 (HOYA catalog equivalent; production supplier unspecified) |
| L13 | Single Aspherical Biconcave Negative | M-TAF105 (HOYA catalog equivalent; production supplier unspecified) |
| L14 | Positive Meniscus | FD225 (HOYA catalog equivalent; production supplier unspecified) |
| L15 | Positive Meniscus | E-CF6 (HOYA catalog equivalent; production supplier unspecified) |
| L16 | Biconvex Positive | FCD505 (HOYA catalog equivalent; production supplier unspecified) |
| L17 | Biconvex Positive | FCD505 (HOYA catalog equivalent; production supplier unspecified) |
| L18 | Biconcave Negative | TAFD45 (HOYA catalog equivalent; production supplier unspecified) |
| L19 | Double Aspherical Biconvex Positive | M-NBFD130 (HOYA catalog equivalent; production supplier unspecified) |