JP 2004-061605 A, Numerical Example 1 — Tomoki Kono
| 20 ELEMENTS / 14 GROUPS |
| DESIGN f = 81.24-389.46 mm |
| DESIGN F/4.46-5.83 |
| ALL SPHERICAL |
| 3 SLD ELEMENTS |
PUBLISHED rear focus: G7 moves imageward by 1.02, 3.91 and 12.32 mm from infinity to the printed 3000 mm state at 81.24, 180.52 and 389.46 mm. Intermediate focus positions are derived, not printed. The 3 m patent state is not the lens's 1.8 m minimum focus distance.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | NBFD15 (Hoya equivalent) |
| L2 | Biconvex Positive | FCD1 (Hoya equivalent) |
| L3 | Positive Meniscus | FCD1 (Hoya equivalent) |
| L4 | Positive Meniscus | BAFD8 (Hoya equivalent) |
| L5 | Negative Meniscus | TAF1 (Hoya equivalent) |
| L6 | Negative Meniscus | LAC14 (Hoya equivalent) |
| L7 | Positive Meniscus | FD60 (Hoya equivalent) |
| L8 | Biconcave Negative | FC5 (Hoya equivalent) |
| L9 | Biconvex Positive | FCD1 (Hoya equivalent) |
| L10 | Biconvex Positive | FC5 (Hoya equivalent) |
| L11 | Biconcave Negative | FD60 (Hoya equivalent) |
| L12 | Positive Meniscus | NBFD15 (Hoya equivalent) |
| L13 | Biconcave Negative | BACD15 (Hoya equivalent) |
| L14 | Biconvex Positive | BSC7 (Hoya equivalent) |
| L15 | Biconvex Positive | FC5 (Hoya equivalent) |
| L16 | Negative Meniscus | NBFD10 (Hoya equivalent) |
| L17 | Biconvex Positive | TAF1 (Hoya equivalent) |
| L18 | Negative Meniscus | TAC6L (Hoya equivalent) |
| L19 | Biconvex Positive | E-FD2 (Hoya equivalent) |
| L20 | Biconcave Negative | TAF1 (Hoya equivalent) |