JP 2014-126652 A — Noriyuki Ogasawara
| 10 ELEMENTS / 8 GROUPS |
| f ≈ 48.7 mm |
| F/2.91 (design) |
| 2ω ≈ 32.1° |
| 1 ASPHERICAL SURFACE |
Unit focus — G1 (L1–L6 with aperture stop) extends toward the object; G2 and sensor are stationary. Only d11 (L6-rear to L7-front gap) changes during focusing.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | S-LAH58 (OHARA) |
| L2 | Biconvex Positive | FCD515 (HOYA) |
| L3 | Biconcave Negative | NBFD15 (HOYA) |
| L4 | Biconcave Negative | S-LAH95 (OHARA) |
| L5 | Biconvex Positive | S-LAH55 (OHARA) |
| L6 | Biconvex Positive | NBFD10 (HOYA catalog equivalent; production supplier unspecified) |
| L7 | Negative Meniscus | E-F2 (HOYA catalog-equivalent; production supplier unspecified) |
| L8 | Positive Meniscus | SF57 (Schott) / S-TIH53 (Ohara) — exact match |
| L9 | Negative Meniscus | S-LAH65 (OHARA) |
| L10 | Biconvex Positive (1× Asph) | MC-NBFD135 (HOYA catalog-equivalent; production supplier unspecified) |