US 8,422,143 B2 — Masakazu Saori
| 12 REFRACTIVE ELEMENTS / 7 MODELED GROUPS |
| f = 25.6946 mm (DESIGN) |
| F/4.1 (DESIGN) |
| 2ω = 109.4° |
| 3 ASPHERICAL SURFACES |
| INNER FOCUS |
CONSTRAINED_RECONSTRUCTION: patent-prescribed rigid R3–R7 inner-focus block moves 2.982301297 mm objectward at the official 0.4 m MFD; reconstruction was solved in the raw patent physical coordinates before OP-filter air-equivalent normalization and predicts 0.11241× magnification.
| Element | Type | Glass |
|---|---|---|
| F1 | Negative Meniscus | 835427 — coordinate class (vendor not established) |
| F2 | Neg. Meniscus (2× Asph) | 731405 — coordinate class (vendor not established) |
| F3 | Biconcave Negative | 618634 — coordinate class (vendor not established) |
| F4 | Biconvex Positive | 744449 — coordinate class (vendor not established) |
| F5 | Negative Meniscus | 835427 — coordinate class (vendor not established) |
| R1 | Biconvex Positive | 648338 — coordinate class (vendor not established) |
| R2 | Negative Meniscus | 773496 — coordinate class (vendor not established) |
| R3 | Biconvex Positive | 497816 — coordinate class (vendor not established) |
| R4 | Biconcave Negative | 806333 — coordinate class (vendor not established) |
| R5 | Biconvex Positive | 487704 — coordinate class (vendor not established) |
| R6 | Biconcave Negative | 835427 — coordinate class (vendor not established) |
| R7 | Biconvex Positive (1× Asph) | 589613 — coordinate class (vendor not established) |