US 8,837,056 B2, Numerical Working Example 1 — Masaki Maruyama
| 13 ELEMENTS / 9 GROUPS |
| DESIGN f = 1.00–3.62 (NORMALIZED; SCALED 55× TO 55–199.1 mm) |
| DESIGN F/4.64–6.49 |
| 4 ASPHERICAL SURFACES / 2 ELEMENTS |
| 2 ED ELEMENTS (MAKER) |
The single-element fourth group moves objectward to focus while every other group stays still. The patent prints infinity spacings only and gives the direction of travel, so the intermediate zoom positions, the focus cam and the travel to the marketed 1 m (1.03 mm at wide, 2.69 mm at mid, 6.02 mm at tele) are inferred.
| Element | Type | Glass |
|---|---|---|
| E1 | Negative Meniscus | TAFD35 (HOYA, coordinate equivalent) |
| E2 | Biconvex Positive | FCD1 (HOYA, coordinate equivalent) |
| E3 | Positive Meniscus | FC5 (HOYA, coordinate equivalent) |
| E4 | Biconcave Negative | NBFD13 (HOYA, coordinate equivalent) |
| E5 | Positive Meniscus | FDS90 (HOYA, coordinate equivalent) |
| E6 | Biconcave Negative | TAFD35 (HOYA, coordinate equivalent) |
| E7 | Biconvex Positive | TAFD35 (HOYA, coordinate equivalent) |
| E8 | Biconvex Positive | FCD1 (HOYA, coordinate equivalent) |
| E9 | Biconcave Negative | FDS90 (HOYA, coordinate equivalent) |
| E10 | Biconvex Positive (Asph) | M-FCD1 (HOYA, coordinate equivalent) |
| E11 | Biconcave Negative (Asph) | M-PCD51 (HOYA, coordinate equivalent) |
| E12 | Biconvex Positive | E-F5 (HOYA, coordinate equivalent) |
| E13 | Biconcave Negative | TAFD5F (HOYA, coordinate equivalent) |