US 8,169,718 B2 — Dayong Li, Hiroshi Yamamoto, Hiroki Harada
| 14 PHYSICAL ELEMENTS / 9 GROUPS |
| 16 MODELED REFRACTIVE MEDIA ENTRIES |
| f = 10.295–23.393 mm (published design states) |
| F/3.60–4.60 (published design states) |
| 4 ASPHERICAL SURFACES |
| NO INTERNAL FOCUS RECONSTRUCTION |
Published internal focusing: Gr1B moves toward the object from infinity toward near focus. Example 4 provides no numerical near-focus spacing state, so this model preserves infinity-focus zoom states only (NO_INTERNAL_RECONSTRUCTION).
| Element | Type | Glass |
|---|---|---|
| L1 | Neg. Meniscus (2× Asph) | NBF1 (supplier-neutral catalog proxy) |
| L2 | Negative Meniscus | TAFD30 (supplier-neutral catalog proxy) |
| L2c | Positive Meniscus (1× Asph) | Unmatched (thin composite-asphere layer coordinate 536412; no public catalog identity established) |
| L3 | Positive Meniscus | E-FD15 (supplier-neutral catalog proxy) |
| L4 | Positive Meniscus | M-FD80 (supplier-neutral catalog proxy) |
| L5 | Negative Meniscus | TAFD30 (supplier-neutral catalog proxy) |
| L6 | Biconvex Positive | M-BACD5N (supplier-neutral catalog proxy) |
| L7 | Negative Meniscus | NBFD15 (supplier-neutral catalog proxy) |
| L8 | Biconcave Negative | N-LAF34 (supplier-neutral catalog proxy) |
| L9 | Positive Meniscus | H-ZF52 (supplier-neutral catalog proxy) |
| L10 | Biconvex Positive | FCD1 (supplier-neutral catalog proxy) |
| L11 | Negative Meniscus | TAFD25 (supplier-neutral catalog proxy) |
| L12 | Biconvex Positive | FCD1 (supplier-neutral catalog proxy) |
| L13 | Negative Meniscus | TAFD25 (supplier-neutral catalog proxy) |
| L14c | Positive Meniscus (1× Asph) | Unmatched (thin composite-asphere layer coordinate 515500; no public catalog identity established) |
| L14 | Negative Meniscus | E-FL5 (supplier-neutral catalog proxy) |