US 2015/0205081 A1, Example 1 — Akira Mizuma
| 10 ELEMENTS / 8 GROUPS |
| 35mm f/2 (production) |
| f = 34.49 mm / F2.05 (Example 1) |
| 2ω = 64.2° |
| 1 ASPHERICAL SURFACE |
| IMAGE STABILIZATION |
CONSTRAINED_RECONSTRUCTION: L1 (S1-S4) is fixed; L2 (S5-S19, including STO) translates 8.223332 mm objectward at 0.24 m. D4 contracts from 9.91 to 1.686668 mm while BF expands from 38.30 to 46.523332 mm, preserving D4 + BF = 48.21 mm. The state is solved from Canon's rounded 0.24 m MFD and cross-checks at |m| = 0.24010.
| Element | Type | Glass |
|---|---|---|
| E1 | Negative Meniscus | 487702 (vendor unresolved) |
| E2 | Positive Meniscus | 773496 (vendor unresolved) |
| E3 | Negative Meniscus | 581407-class (vendor unresolved) |
| E4 | Biconvex Positive | 883408 (vendor unresolved) |
| E5 | Positive Meniscus | 883408 (vendor unresolved) |
| E6 | Biconcave Negative | 613370 (vendor unresolved) |
| E7 | Biconvex Positive | 697555 (vendor unresolved) |
| E8 | Negative Meniscus | 738323 (vendor unresolved) |
| E9 | Positive Meniscus | 595677 (vendor unresolved) |
| E10 | Pos. Meniscus (1× Asph) | 583594-class (vendor unresolved) |