JP 2017-3807 A Example 4 — Konica Minolta / Nikon
| 12 elements / 9 groups |
| 24 mm f/1.8 marketed |
| f = 24.423 mm design |
| F/1.86 design |
| 2 ED + 2 hybrid aspherical elements |
| 84.4° patent field |
Rear-group inner focus: Gr1 is fixed; Gr2 moves 4.98 mm object-ward from infinity to close focus while BFD increases by 4.98 mm.
| Element | Type | Glass |
|---|---|---|
| L1 | Negative Meniscus | S-LAH66 (OHARA) |
| L2g | Negative Meniscus substrate | S-PHM52 (OHARA) |
| L2r | Hybrid aspherical resin layer | UV-curable resin (patent nd=1.51380, νd=53.0) |
| L3 | Biconvex Positive | S-LAH95 (OHARA) |
| L4 | Biconcave Negative | S-TIH14 (OHARA) |
| L5 | Positive Meniscus | S-TIM28 (OHARA) |
| L6 | Biconvex Positive | S-LAL14 (OHARA) |
| L7 | Negative Meniscus | S-NSL3 (OHARA) |
| L8 | Biconcave Negative | S-TIM35 (OHARA) |
| L9 | Biconvex Positive ED | S-FPL51 (OHARA) |
| L10 | Negative Meniscus | S-LAL18 (OHARA) |
| L11 | Biconvex Positive ED | S-FPL51 (OHARA) |
| L12r | Hybrid aspherical resin layer | UV-curable resin (patent nd=1.51380, νd=53.0) |
| L12g | Positive Meniscus substrate | S-PHM52 (OHARA) |
Detailed analysis available in the interactive viewer above.