JP 2016-021011 A Example 4 — Konica Minolta / Nikon
| 13 elements / 11 groups |
| f = 20.600 mm design EFL |
| F/1.86 design, f/1.8 marketed |
| 2 ED elements / 2 aspherical lens elements |
| Rear-group focusing |
Rear-group focusing: Gr2 (surfaces 14-28) moves approximately 5.375 mm object-ward at 0.20 m; cover glass is folded into the final air-equivalent BFD.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | S-LAL18 / TAC8 class (729/547) |
| L12g | Negative Meniscus | S-LAL18 / TAC8 class (729/547) |
| L12r | Hybrid Aspherical Resin Layer | 514530 — patent UV-cure resin (nd=1.51380, νd=53.0) |
| L13 | Biconcave Negative | S-FPL51 / FCD1 class (ED fluorophosphate, 497/816) |
| L14 | Biconvex Positive | NBFD15 (HOYA, 806/333) |
| C1 | Cement Layer | 514428 — patent cement layer (nd=1.51400, νd=42.8) |
| L15 | Negative Meniscus | S-TIH53 / FDS90 class (847/238) |
| L16 | Positive Meniscus | FD60 / S-TIH6 class (805/255) |
| L21 | Negative Meniscus | TAF3 / S-LAH65V / N-LASF44 class (804/465) |
| L22 | Biconvex Positive | BACD18 / S-BSM18 class (639/555) |
| L23 | Positive Meniscus | FCD515 (HOYA, ED phosphate crown, 593/686) |
| C2 | Cement Layer | 514428 — patent cement layer (nd=1.51400, νd=42.8) |
| L24 | Negative Meniscus | NBFD15 (HOYA, 806/333) |
| L25 | Negative Meniscus | S-LAH95 (OHARA, 904/313) |
| L26 | Biconvex Positive (2x Asph) | L-LAL13 / 694532 moldable lanthanum-crown class (close) |
| L27 | Positive Meniscus | S-PHM52 (OHARA, 618/633) |
Detailed analysis available in the interactive viewer above.