JP 2009-058817 A, Example 3 — Ai Hoshina
| 13 ELEMENTS / 9 GROUPS |
| DESIGN f = 4.45 mm |
| DESIGN F/2.9 |
| ALL SPHERICAL |
| EQUISOLID PROJECTION |
Patent infinity state only; the production lens focuses to 13.5 cm. The patent gives no near-focus spacings, so no focus movement is modelled.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | N-LASF44 (Schott equivalent) |
| L2 | Negative Meniscus | N-LASF44 (Schott equivalent) |
| L3 | Biconcave Negative | N-LASF44 (Schott equivalent) |
| L4 | Biconvex Positive | E-FD5 (Hoya equivalent) |
| L5 | Biconcave Negative | N-LAF34 (Schott equivalent) |
| L6 | Biconvex Positive | E-FEL1 (Hoya equivalent) |
| L7 | Negative Meniscus | N-LAF34 (Schott equivalent) |
| L8 | Biconvex Positive | E-F2 (Hoya equivalent) |
| L9 | Biconcave Negative | N-LAF34 (Schott equivalent) |
| L10 | Biconvex Positive | H-QK3L (CDGM equivalent) |
| L11 | Biconcave Negative | NBFD10 (Hoya equivalent) |
| L12 | Biconvex Positive | FCD1 (Hoya equivalent) |
| L13 | Biconvex Positive | H-QK3L (CDGM equivalent) |