US 7,158,320 B2 — Akihiro Nishio
| 13 ELEMENTS / 10 GROUPS |
| 100-300mm MARKETED |
| PATENT EX. 3: 103.35-291.85mm |
| PATENT FNO: 4.65-5.81 (FIG. 6C: 5.80 TELE) |
| REAR FOCUS PRODUCTION LENS; NO CLOSE-FOCUS RECONSTRUCTION |
Production lens: fourth-group rear focus. Patent Example 3: no finite-object spacing table; focus status NO_INTERNAL_RECONSTRUCTION, so only published infinity zoom states are modeled.
| Element | Type | Glass |
|---|---|---|
| E1 | Negative Meniscus | 805254 dense-flint class (catalog-equivalent coefficient proxy; production supplier unspecified) |
| ITO | Negative Meniscus Adhesive Layer | Unmatched (patent-defined 15% ITO/polyvinylcarbazole adhesive composite) |
| E2 | Biconvex Positive | 517642 crown class (catalog-equivalent coefficient proxy; production supplier unspecified) |
| E3 | Positive Meniscus | 487702 low-index crown class (catalog-equivalent coefficient proxy; production supplier unspecified) |
| E4 | Biconcave Negative | 835427 lanthanum high-index class (vendor unspecified) |
| E5 | Positive Meniscus | 847238/239 high-index flint class (vendor unspecified) |
| E6 | Biconcave Negative | 847238/239 high-index flint class (vendor unspecified) |
| E7 | Biconvex Positive | 603607 dense-crown/SK14 class (vendor unspecified) |
| E8 | Biconvex Positive | 487702 low-index crown class (catalog-equivalent coefficient proxy; production supplier unspecified) |
| E9 | Negative Meniscus | 834372/373 lanthanum high-index class (vendor unspecified) |
| E10 | Biconvex Positive | BAF5-class coefficient proxy (patent 607492; production supplier unspecified) |
| E11 | Biconcave Negative | 835427 lanthanum high-index class (vendor unspecified) |
| E12 | Negative Meniscus | 835427 lanthanum high-index class (vendor unspecified) |
| E13 | Positive Meniscus | 785257 dense-flint class (vendor unspecified) |