US 2018/0180842 A1 Example 1 — Pretorius / Carl Zeiss AG
| 8 elements / 5 groups |
| f = 35.000 mm |
| F/2.0 |
| 2ω ≈ 63.5° |
| 4 aspherical surfaces |
Dual floating inner focus: subgroups 21 and 22 move independently behind the fixed stop while the first compound lens and rear bi-asphere remain fixed.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconcave Negative | S-TIH6 (OHARA) |
| L2 | Biconvex Positive | S-LAM61 (OHARA) |
| L3 | Biconvex Positive | S-NPH1 (OHARA) |
| L4 | Biconcave Negative | S-TIH1 (OHARA) |
| L5 | Positive Meniscus | S-FPM2 (OHARA) |
| L6 | Biconvex Positive | S-LAH59 (OHARA) |
| L7 | Bi-Aspheric Positive | S-FPM2 (OHARA) |
| L8 | Bi-Aspheric Negative Meniscus | L-LAM69 (OHARA) |
Detailed analysis available in the interactive viewer above.