JP 2020-173366 A — Ryosuke Imajima, Takakazu Hirose, Daisuke Tanahashi, Yasushi Yamamoto, Mami Muratani
| 12 ELEMENTS / 8 GROUPS |
| f = 83.0 mm (source summary) |
| F/1.85 (patent) |
| 2ω = 29.26° (patent) |
| ALL SPHERICAL · PATENT EXAMPLE 3 |
Source POS2 is 0.8 m object-to-image: Gr2 moves imageward 3.838 mm and Gr3 objectward 6.762 mm. Gr1, stop and Gr4 are fixed (0.001 mm table rounding). Intermediate motion is interpolated; the rounded prescription gives about 0.803 m at POS2.
| Element | Type | Glass |
|---|---|---|
| L11 | Biconvex Positive | S-LAH66 (OHARA, inferred coordinate counterpart) |
| L12 | Positive Meniscus | FCD705 (HOYA, inferred coordinate counterpart) |
| L13 | Biconvex Positive | S-FPL51 (OHARA, inferred coordinate counterpart) |
| L14 | Biconcave Negative | H-ZLaF76 (CDGM, inferred coordinate counterpart) |
| L21 | Biconvex Positive | PBH21 (OHARA, inferred coordinate counterpart) |
| L22 | Biconcave Negative | J-F5 (Hikari, inferred coordinate counterpart) |
| L31 | Biconvex Positive | J-PSKH4 (Hikari, inferred coordinate counterpart) |
| L41 | Plano-Convex Positive | TAFD35 (HOYA, inferred coordinate counterpart) |
| L42 | Biconcave Negative | H-ZF2 (CDGM, inferred coordinate counterpart) |
| L43 | Biconvex Positive | J-LASFH22 (Hikari, inferred coordinate counterpart) |
| L44 | Biconcave Negative | J-F5 (Hikari, inferred coordinate counterpart) |
| L45 | Negative Meniscus | SF2 (Schott, inferred coordinate counterpart) |