JP 2018-180348 A, Numerical Example 1 — Shunichiro Yoshinaga, Hiroaki Suzuki, Yoshiaki Kurioka
| 15 ELEMENTS / 10 GROUPS |
| DESIGN f = 8.27–17.24 mm |
| DESIGN F/2.90–3.99 |
| 8 ASPHERICAL SURFACES / 4 ELEMENTS |
| 3 ED ELEMENTS (1 ASPHERICAL) / 1 UHR |
Infinity focus only: the patent prints no close-focus data. Its text (¶0029) says the fourth group (G4) moves imageward to focus, while Figure 1 draws the focusing arrow under G3. Panasonic's 0.23 m minimum focus distance is not modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | TAF3 (catalog equivalent; supplier unconfirmed) |
| L2 | Neg. Meniscus (2× Asph) | K-CSK120 (catalog equivalent; supplier unconfirmed) |
| L3 | Biconcave Negative | FCD705 (catalog equivalent; supplier unconfirmed) |
| L4 | Positive Meniscus | S-LAH55 (catalog equivalent; supplier unconfirmed) |
| L5 | Pos. Meniscus (2× Asph) | K-CSK120 (catalog equivalent; supplier unconfirmed) |
| L6 | Positive Meniscus | S-TIH53 (catalog equivalent; supplier unconfirmed) |
| L7 | Biconcave Negative | TAFD55 (catalog equivalent; supplier unconfirmed) |
| L8 | Biconvex Positive | S-NBH5 (catalog equivalent; supplier unconfirmed) |
| L9 | Biconvex Positive | FCD1 (catalog equivalent; supplier unconfirmed) |
| L10 | Biconvex Positive | FDS18 (catalog equivalent; supplier unconfirmed) |
| L11 | Biconcave Negative | S-TIH53 (catalog equivalent; supplier unconfirmed) |
| L12 | Biconvex Positive (2× Asph) | S-FPL51 (catalog equivalent; supplier unconfirmed) |
| L13 | Biconcave Negative | NBFD15 (catalog equivalent; supplier unconfirmed) |
| L14 | Positive Meniscus | S-BSM16 (catalog equivalent; supplier unconfirmed) |
| L15 | Biconvex Positive (2× Asph) | S-TIM28 (catalog equivalent; supplier unconfirmed) |