US 2022/0026670 A1 — Kazuyasu Ohashi
| 7 ELEMENTS / 5 GROUPS |
| f = 26.05 mm |
| F/2.87 |
| 2ω = 56.6° |
| 2 MODELED ASPHERES; S12 UNRESOLVED |
Reconstructed unit focus: all seven elements and the stop translate 4.85519 mm for an assumed 20 cm image-to-object distance. No finite patent focus schedule; S12 asphere coefficients remain unavailable.
| Element | Type | Glass |
|---|---|---|
| L1 | Pos. Meniscus (1× Asph) | OHARA L-LAH85V (patent-listed) |
| L2 | Negative Meniscus | OHARA S-NBH58 |
| L3 | Biconcave Negative | OHARA S-TIM27 |
| L4 | Biconvex Positive | OHARA S-LAH58 |
| L5 | Biconvex Positive | J-LASKH2 — compatible counterpart; patent glass-name conflict |
| L6 | Biconcave Negative | OHARA S-TIL6 |
| L7 | Neg. Meniscus (2× Asph) | OHARA L-LAH86 (patent-listed; Pg,F=0.5943) |