US 2022/0066176 A1 Ex. 1 — Leica Camera AG / Roth & Keller
| 10 ELEMENTS / 5 GROUPS |
| f ≈ 34.8 mm (d-line) |
| F/2.0 |
| 2ω ≈ 62.2° |
| 4 ASPHERICAL SURFACES (3 ELEMENTS) |
Floating rear group: VG+BL+MG translate forward together; HG translates forward with shorter travel (~70% of front assembly). Differential motion compensates coma and astigmatic difference at close range.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive (1× Asph) | S-LAH89 (OHARA) |
| L2 | Biconcave Negative | N-KZFS5 (Schott) / S-NBH5 (OHARA) |
| L3 | Biconcave Negative | N-KZFS5 (Schott) / S-NBH5 (OHARA) |
| L4 | Biconvex Positive | S-LAH58 (OHARA) |
| L5 | Biconvex Positive | S-FPL51 (OHARA) |
| L6 | Biconcave Negative | N-KZFS5 (Schott) / S-NBH5 (OHARA) |
| L7 | Biconvex Positive | S-FPL51 (OHARA) |
| L8 | Biconvex Positive (1× Asph) | S-LAH89 (OHARA) |
| L9 | Biconcave Negative | N-KZFS5 (Schott) / S-NBH5 (OHARA) |
| L10 | Neg. Meniscus (2× Asph) | L-BAL42 (OHARA PGM) |
Detailed analysis available in the interactive viewer above.