WO 2023/190222 A1 — Ayumu Makida, Taeko Toshi
| 8 ELEMENTS / 6 GROUPS |
| f = 26.78 mm |
| F/2.90 |
| 2ω ≈ 80.6° |
| 4 ASPHERICAL SURFACES |
Source unit focus: all optics and the stop move objectward 5.113 mm. The near object-to-image distance is inferred as 0.200 m from the source BFD; intermediate distances are estimates.
| Element | Type | Glass |
|---|---|---|
| L1 | Pos. Meniscus (1× Asph) | S-BAL35 (inferred catalog counterpart; production material unspecified) |
| L2 | Biconcave Negative | S-FTM16 (inferred catalog counterpart; production material unspecified) |
| L3 | Biconvex Positive | S-LAH58 (inferred catalog counterpart; production material unspecified) |
| L4 | Biconvex Positive | J-LASF09A (inferred catalog counterpart; production material unspecified) |
| L5 | Biconcave Negative | N-F2 (inferred catalog counterpart; production material unspecified) |
| L6 | Pos. Meniscus (2× Asph) | M-BACD12 (inferred catalog counterpart; production material unspecified) |
| L7 | Negative Meniscus | SF4 (inferred catalog counterpart; production material unspecified) |
| L8a | Asph. Resin Layer (1× Asph) | Resin layer (patent composite asphere; chemistry and supplier unspecified) |
| L8b | Positive Meniscus | S-LAH58 (inferred catalog counterpart; production material unspecified) |