JPS5134741A — Tadashi Kojima
| 11 ELEMENTS / 10 GROUPS |
| 45–100mm MARKETING / 46.76–99.18mm PATENT |
| F/3.5 |
| Y = 21.63mm |
| ALL-SPHERICAL |
NO_INTERNAL_RECONSTRUCTION: the patent publishes only zoom spacings. The manufacturer 0.35 m MFD is metadata; no close-focus group motion is modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-TIH6 catalog-equivalent coefficient proxy (patent 805254; production supplier unspecified) |
| L2 | Positive Meniscus | S-BSM15 catalog-equivalent coefficient proxy (patent 623582; production supplier unspecified) |
| L3 | Positive Meniscus | S-BSM15 catalog-equivalent coefficient proxy (patent 623582; production supplier unspecified) |
| L4 | Negative Meniscus | S-BSM15 catalog-equivalent coefficient proxy (patent 623582; production supplier unspecified) |
| L5 | Biconcave Negative | S-BSM15 catalog-equivalent coefficient proxy (patent 623582; production supplier unspecified) |
| L6 | Positive Meniscus | S-TIH6 catalog-equivalent coefficient proxy (patent 805254; production supplier unspecified) |
| L7 | Biconvex Positive | S-BSM15 catalog-equivalent coefficient proxy (patent 623582; production supplier unspecified) |
| L8 | Biconvex Positive | E-C3 catalog-equivalent coefficient proxy (patent 518590; production supplier unspecified) |
| L9 | Biconcave Negative | E-FD15 catalog-equivalent coefficient proxy (patent 699301; production supplier unspecified) |
| L10 | Positive Meniscus | K-BK7 catalog-equivalent coefficient proxy (patent 516641; production supplier unspecified) |
| L11 | Biconvex Positive | S-TIL26 catalog-equivalent coefficient proxy (patent 567428; production supplier unspecified) |