JP 2015-114366 A, Numerical Example 1
| 13 elements / 8 groups |
| f = 49.58 mm design |
| F1.4 nominal / F1.46 design |
| Floating internal focus |
| 3 SLD-class elements / 1 double-sided aspherical element |
Internal floating focus: G1 fixed; G2A and the stop/G2B move independently toward the object. Patent variables are d9, d14, and BF at infinity and at 0.40 m.
| Element | Type | Glass |
|---|---|---|
| L1 | Positive Meniscus | TAFD35 (HOYA) |
| L2 | Negative Meniscus | E-F1 (HOYA, reference) |
| L3 | Positive Meniscus | FCD1 (HOYA) |
| L4 | Biconcave Negative | E-FEL1 (HOYA) |
| L5 | Biconvex Positive | TAFD30 (HOYA) |
| L6 | Positive Meniscus | E-FDS1 (HOYA) |
| L7 | Biconvex Positive | TAC8 (HOYA) |
| L8 | Biconcave Negative | E-FD10 (HOYA, reference) |
| L9 | Biconcave Negative | E-F1 (HOYA, reference) |
| L10 | Biconvex Positive | FCD515 (HOYA) |
| L11 | Biconvex Positive | FCD515 (HOYA) |
| L12 | Biconcave Negative | E-CF6 (HOYA) |
| L13 | Biconvex Positive (2× Asph) | M-TAF1 (HOYA, reference) |
Detailed analysis available in the interactive viewer above.