US 4,452,513 A — Yoshinari Hamanishi
| 15 ELEMENTS / 10 GROUPS |
| 200-400mm |
| F/4 |
| 4 m MFD |
| 135 FORMAT |
CONSTRAINED_RECONSTRUCTION: production 4 m MFD modeled by G1-only first focusing; the code-solved relative motion is represented by D5 at the 200 mm and 400 mm endpoints. The patent's nearer 2.5 m/1.4 m worked states are verification references, not production focus states.
| Element | Type | Glass |
|---|---|---|
| L11a | Negative Meniscus | 757317 — E-LAF11 catalog equivalent (production supplier unspecified) |
| L11b | Biconvex Positive | 498823 — J-FKH1 catalog equivalent (production supplier unspecified) |
| L12 | Positive Meniscus | 498823 — J-FKH1 catalog equivalent (production supplier unspecified) |
| L2a | Biconcave Negative | 788475 — lanthanum-flint class (vendor unresolved) |
| L2b | Biconvex Positive | 755276 — SF4 catalog equivalent (production supplier unspecified) |
| L2c | Biconcave Negative | 517641 — BK7 class (vendor unresolved) |
| L22 | Negative Meniscus | 802447 — M-TAF31 catalog equivalent (production supplier unspecified) |
| L3a | Biconvex Positive | 498823 — J-FKH1 catalog equivalent (production supplier unspecified) |
| L3b | Negative Meniscus | 757317 — E-LAF11 catalog equivalent (production supplier unspecified) |
| L41 | Biconvex Positive | 498823 — J-FKH1 catalog equivalent (production supplier unspecified) |
| L42 | Negative Meniscus | 788475 — lanthanum-flint class (vendor unresolved) |
| L43 | Positive Meniscus | 517641 — BK7 class (vendor unresolved) |
| L44 | Negative Meniscus | 773494 — M-TAF1 catalog equivalent (production supplier unspecified) |
| L45a | Negative Meniscus | 734511 — TAC4 catalog equivalent (production supplier unspecified) |
| L45b | Biconvex Positive | 581408 — PBL25 catalog equivalent (production supplier unspecified) |