JP 1979-055423 A, Example 1 — Toshiko Shimokura
| 4 ELEMENTS / 4 GROUPS |
| 135mm f/3.5 |
| 18° ANGLE OF VIEW |
| 1.5 m MFD |
| 55 mm FILTER |
NO_INTERNAL_RECONSTRUCTION: JPS54-55423A Example 1 publishes only the infinity optical state. The production 1.5 m minimum focus distance is catalog metadata; no focus spacing is modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | 516641 — crown class (vendor unresolved) |
| L2 | Positive Meniscus | 516641 — crown class (vendor unresolved) |
| L3 | Negative Meniscus | 762271 — dense-flint class (vendor unresolved) |
| L4 | Positive Meniscus | 805254 — dense-flint class (vendor unresolved) |