JP S40-24553 B, sole example — Jiro Mukai
| 7 ELEMENTS / 5 GROUPS |
| DESIGN f = 1 (SCALED ×58) |
| DESIGN F/1.2 |
| ALL SPHERICAL |
| PATENT 2ω = 46° |
Patent infinity state only; all spacings stay fixed. The production lens focuses to 0.6 m, but the patent gives no focus travel, so no close-focus state is modeled.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | BAFD8 (HOYA catalog equivalent; production supplier unspecified) |
| L2 | Biconvex Positive | J-BASF6 (HIKARI catalog equivalent; production supplier unspecified) |
| L3 | Biconcave Negative | S-TIH4 (OHARA catalog equivalent; production supplier unspecified) |
| L4 | Biconcave Negative | FF5 (HOYA catalog equivalent; production supplier unspecified) |
| L5 | Biconvex Positive | S-LAL8 (OHARA catalog equivalent; production supplier unspecified) |
| L6 | Plano-Convex | K-LaK10 (SUMITA catalog equivalent; production supplier unspecified) |
| L7 | Biconvex Positive | LAF2 (HOYA catalog equivalent; production supplier unspecified) |