JP H06-235857 A — Kouichi Ohshita
| 3 ELEMENTS / 3 GROUPS |
| f ≈ 27.998 mm |
| F/3.54 DESIGN / f/3.5 MARKETED |
| 2ω = 74.6° |
| ALL-SPHERICAL |
Not modeled; Nikon documents unit focusing with a fixed rear stop.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | S-LAH66-class (coordinate-compatible spectral proxy; supplier unproven) |
| L2 | Biconcave Negative | N-SF8-class (coordinate-compatible spectral proxy; supplier unproven) |
| L3 | Biconvex Positive | Unmatched (840433-class; no compatible catalog curve) |