JP 2014-89365 A — Ryo Shioda
| 17 ELEMENTS / 12 GROUPS |
| DESIGN f = 18.60–33.78 mm |
| DESIGN F/1.86 |
| 5 ASPHERICAL SURFACES / 4 ELEMENTS |
PUBLISHED: G1B (L5–L6) moves objectward; all infinity/111.5000 mm first-vertex object-distance states retained at three zoom stations. closeFocusM uses object-to-image distance. Intermediate slider spacing is linear interpolation, not a recovered cam law. Tiny printed BF/total-track variations are retained.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus (1× Asph) | M-TAF1 (HOYA catalog equivalent; supplier unconfirmed) |
| L2 | Negative Meniscus (1× Asph) | M-TAF1 (HOYA catalog equivalent; supplier unconfirmed) |
| L3 | Biconcave Negative | FCD1 (HOYA catalog equivalent; supplier unconfirmed) |
| L4 | Biconvex Positive | TAFD35 (HOYA catalog equivalent; supplier unconfirmed) |
| L5 | Biconcave Negative | E-F1 (HOYA catalog equivalent; supplier unconfirmed) |
| L6 | Positive Meniscus | TAFD55 (HOYA catalog equivalent; supplier unconfirmed) |
| L7 | Biconvex Positive | FCD505 (HOYA catalog equivalent; supplier unconfirmed) |
| L8 | Biconvex Positive (1× Asph) | M-PCD51 (HOYA catalog equivalent; supplier unconfirmed) |
| L9 | Biconcave Negative | E-F1 (HOYA catalog equivalent; supplier unconfirmed) |
| L10 | Biconvex Positive | FCD505 (HOYA catalog equivalent; supplier unconfirmed) |
| L11 | Biconcave Negative | TAFD30 (HOYA catalog equivalent; supplier unconfirmed) |
| L12 | Biconcave Negative | TAFD30 (HOYA catalog equivalent; supplier unconfirmed) |
| L13 | Biconvex Positive | FDS90 (HOYA catalog equivalent; supplier unconfirmed) |
| L14 | Biconvex Positive | FCD505 (HOYA catalog equivalent; supplier unconfirmed) |
| L15 | Biconvex Positive | FCD505 (HOYA catalog equivalent; supplier unconfirmed) |
| L16 | Biconcave Negative | E-FD10 (HOYA catalog equivalent; supplier unconfirmed) |
| L17 | Biconvex Positive (2× Asph) | M-PCD51 (HOYA catalog equivalent; supplier unconfirmed) |