JP 2023-063766 A — Kazuhiro Ogino
| 9 ELEMENTS / 7 GROUPS |
| f = 49.998 mm |
| F/1.0 |
| 2ω = 47.9° |
| 3 ASPHERICAL SURFACES |
JP2023063766A discloses infinity only. The 0.45 m endpoint is an inferred paraxial unit-extension model: all optics and the stop move 7.395 mm toward the object. It does not reproduce the mirrorless production floating mechanism.
| Element | Type | Glass |
|---|---|---|
| L1 | Pos. Meniscus (1× Asph) | S-LAH93 (OHARA, catalog equivalent; production supplier unspecified) |
| L2 | Positive Meniscus | TAFD37A (HOYA, catalog equivalent; production supplier unspecified) |
| L3 | Negative Meniscus | S-TIH6 (OHARA catalog equivalent; production supplier unspecified) |
| L4f | Biconcave Negative | S-TIH14 (OHARA, catalog equivalent; production supplier unspecified) / SF14-family dense flint |
| L4r | Biconvex Positive | S-LAH58 (OHARA catalog equivalent; production supplier unspecified) |
| L5 | Biconvex Positive | S-LAH58 (OHARA catalog equivalent; production supplier unspecified) |
| L6f | Biconvex Positive | S-LAH58 (OHARA catalog equivalent; production supplier unspecified) |
| L6r | Biconcave Negative | J-KZFH4 (HIKARI catalog-equivalent to patent 553551; production supplier unspecified) |
| L7 | Neg. Meniscus (2× Asph) | L-LAH84 (OHARA catalog-equivalent; patent supplier unspecified) |