US 2020/0049962 A1 Example 1 — Nikon / Tomoki Ito
| 20 ELEMENTS / 12 GROUPS |
| f = 80–400 mm (design 81.6–392.0 mm) |
| F/4.5–5.6 |
| 2ω = 30°10′–6°10′ |
| ALL SPHERICAL · 4 ED + 1 SUPER ED |
Inner focus: G3 translates toward image. D2 increases, D3 decreases. SWM AF drive.
| Element | Type | Glass |
|---|---|---|
| L11 | Neg. Meniscus | J-LASFH9 (Hikari, 903357 high-index lanthanum flint) |
| L12 | Biconvex Positive | J-FKH1 (Hikari, 498826 ED fluorophosphate) |
| L13 | Positive Meniscus | FCD100 (HOYA) — Super ED |
| L21 | Biconvex Positive | S-LAH52 (OHARA) |
| L22 | Biconcave Negative | J-FKH1 (Hikari, 498826 ED fluorophosphate) |
| L23 | Biconcave Negative | S-LAH59 (OHARA) |
| L24 | Positive Meniscus | SF6 (Schott) |
| L25 | Biconcave Negative | S-LAH55V (OHARA) |
| L31 | Biconvex Positive | J-PSKH1 (Hikari, 593679 ED phosphate crown) |
| L32 | Neg. Meniscus | S-LAH95 (OHARA) |
| L33 | Biconvex Positive | J-PSKH1 (Hikari, 593679 ED phosphate crown) |
| L41 | Biconcave Negative | S-LAL18 (OHARA) |
| L42 | Positive Meniscus | J-LASFH9 (Hikari, 903357 high-index lanthanum flint) |
| L51 | Biconvex Positive | S-LAM2 (OHARA) |
| L52 | Plano-Convex Positive | S-FSL5 (OHARA) / N-FK5 (Schott) |
| L53 | Plano-Concave Negative | J-LASFH15 (Hikari, 950294) / TAFD45 class |
| L54 | Plano-Convex Positive | S-NSL36 (OHARA) / K10 (Schott) |
| L55 | Biconvex Positive | S-TIM22 (OHARA) / S-TIF6 class (patent vd=33.7) |
| L56 | Plano-Concave Negative | S-PHM53 (OHARA) / phosphate crown class |
| L57 | Neg. Meniscus | S-LAH55V (OHARA) |
Detailed analysis available in the interactive viewer above.