US 2018/0252903 A1 — Satoshi Yamaguchi
| 17 ELEMENTS / 13 GROUPS |
| 16.49–77.79 mm PATENT DESIGN |
| FNO 2.72–4.16 PATENT DESIGN |
| 3 ASPHERICAL SURFACES |
| G2 INTERNAL FOCUS / G4A VR |
PUBLISHED: G2 translates objectward between the patent Table 3 infinity and short-distance states; W/M/T endpoints preserve source D5/D14 pairs while D22, D27, and BF are zoom-only.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | J-SF03 (supplier-neutral catalog proxy) |
| L12 | Positive Meniscus | J-PSKH1 (supplier-neutral catalog proxy) |
| L13 | Positive Meniscus | J-LASF09A (supplier-neutral catalog proxy) |
| L21r | Bonded Aspherical Resin Layer | Unmatched bonded aspherical resin (patent medium; no published dispersion coefficients) |
| L21 | Negative Meniscus Substrate | J-LASF09A (supplier-neutral catalog proxy) |
| L22 | Biconcave Negative | J-LASF09A (supplier-neutral catalog proxy) |
| L23 | Biconvex Positive | J-SF03 (supplier-neutral catalog proxy) |
| L24 | Negative Meniscus | J-LASF08A (supplier-neutral catalog proxy) |
| L31 | Biconvex Positive | LLF1 (supplier-neutral catalog proxy) |
| L32 | Biconvex Positive | J-KF6 (supplier-neutral catalog proxy) |
| L33 | Negative Meniscus | J-LASFH24 (supplier-neutral catalog proxy) |
| L34 | Biconvex Positive | J-FKH1 (supplier-neutral catalog proxy) |
| L41 | Biconcave Negative (1× Asph) | Unmatched (nd=1.79050, vd=45.0; glass-molded asphere) |
| L42 | Positive Meniscus | J-LASFH24 (supplier-neutral catalog proxy) |
| L43 | Negative Meniscus | J-LASF09A (supplier-neutral catalog proxy) |
| L51 | Plano-Convex Positive | J-FKH1 (supplier-neutral catalog proxy) |
| L52 | Biconvex Positive | J-FKH1 (supplier-neutral catalog proxy) |
| L53 | Negative Meniscus (1× Asph) | M-TAFD307 (supplier-neutral catalog proxy) |