US 3,459,468, sole example — Helmut Marx, Paul Sindel
| 6 ELEMENTS / 4 GROUPS |
| DESIGN f = 52 mm |
| DESIGN F/1.2 |
| 2 ASPHERICAL SURFACES / 2 ELEMENTS |
Patent infinity state only; the production lens focuses to 1.0 m.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | Unmatched (ne 1.821 / νe 45.2; no catalog row within the printed precision) |
| L2 | Positive Meniscus | Unmatched (ne 1.900 / νe 40.5; no catalog row within the printed precision) |
| L3 | Negative Meniscus | SF56A (SCHOTT catalog equivalent; production supplier unspecified) |
| L4 | Biconcave Negative | Unmatched (ne 1.844 / νe 30.0; no catalog row within the printed precision) |
| L5 | Biconvex Positive | Unmatched (ne 1.900 / νe 40.5; no catalog row within the printed precision) |
| L6 | Biconvex Positive | S-LAL9 (OHARA catalog equivalent; production supplier unspecified) |