US 2010/0220400 A1 Example 2 — Nikon / Yamamoto et al.
| 28-300mm FX superzoom |
| 19 glass elements / 14 production groups |
| 2 ED elements / 3 marketed aspherical elements |
| Internal focus by G2; VR group in G4 |
Internal focusing by moving the complete second lens group G2 toward the object; d5 decreases while d13A increases by the same amount.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | J-LASFH13 (HIKARI) |
| L12 | Biconvex Positive | J-FKH1 (HIKARI, ED fluorophosphate) |
| L13 | Positive Meniscus | J-PSK03 (HIKARI) |
| L21 | Neg. Meniscus (1× Asph) | Unmatched (near HIKARI J-LASFH2; patent nd=1.76546, νd=46.73) |
| L22 | Negative Meniscus | J-LASF015 (HIKARI) / S-LAH65V class |
| L23 | Biconvex Positive | J-SF03 (HIKARI) / S-TIH53 class |
| L24 | Biconcave Negative (1× Asph) | J-LASF015 (HIKARI) / S-LAH65V class |
| L31 | Biconvex Positive | J-LAK18 (HIKARI) / S-LAL18 class |
| L32 | Biconvex Positive | J-FKH1 (HIKARI, ED fluorophosphate) |
| L33 | Negative Meniscus | J-SF03 (HIKARI) / S-TIH53 class |
| L34 | Negative Meniscus | J-LASF09A (HIKARI) |
| L35 | Biconvex Positive | J-K3 (HIKARI) / S-NSL3 class |
| L41 | Biconcave Negative | J-LASF016 (HIKARI) / S-LAH66 class |
| L42 | Positive Meniscus | J-LASF021 (HIKARI) / S-LAH71 class |
| L43r | Hybrid Resin Layer | UV-cure optical resin (patent-listed) |
| L43g | Negative Meniscus (hybrid asphere substrate) | J-LAK18 (HIKARI) / S-LAL18 class |
| L51 | Biconvex Positive | J-SK11 (HIKARI) |
| L52 | Biconvex Positive | S-TIL1 (OHARA) |
| L53 | Negative Meniscus | J-LASFH13 (HIKARI) |
| L54 | Negative Meniscus (1× Asph) | 821426 — patent dense flint (nd=1.82080, νd=42.64; no public HIKARI/OHARA match found) |
Detailed analysis available in the interactive viewer above.