US 2022/0026670 A1 EXAMPLE 3 — KAZUYASU OHASHI
| 7 ELEMENTS / 5 GROUPS |
| f ≈ 26.1 mm |
| F/2.8 |
| 2ω ≈ 56.6° |
| 3 ASPHERICAL SURFACES |
Unit focus — entire 7-element assembly translates along the optical axis.
| Element | Type | Glass |
|---|---|---|
| L1 | Pos. Meniscus (1× Asph) | OHARA L-LAH85V (PGM) |
| L2 | Negative Meniscus | OHARA S-NBH58 |
| L3 | Biconcave Negative | OHARA S-TIM27 |
| L4 | Biconvex Positive | OHARA S-LAH58 |
| L5 | Biconvex Positive | OHARA 755523 (TaC6; see analysis §5.2) |
| L6 | Biconcave Negative | OHARA S-TIL6 |
| L7 | Neg. Meniscus (2× Asph) | OHARA L-LAH86 (PGM) |
Detailed analysis available in the interactive viewer above.