US 2017/0075089 A1 Example 1 — FUJIFILM / Nagami & Suzuki
| 7 ELEMENTS / 5 GROUPS |
| f ≈ 19.1 mm |
| F/2.88 |
| 2ω ≈ 72.8° |
| 4 ASPHERICAL SURFACES (2 ELEMENTS) |
G1 + aperture stop + G2 translate integrally forward; G3 fixed relative to sensor.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | S-FTM16 (OHARA) |
| L12 | Positive Meniscus | S-LAH58 (OHARA) |
| L21 | Biconcave Negative | S-TIM35 (OHARA) |
| L22 | Biconvex Positive | S-LAH58 (OHARA) |
| L23 | Neg. Meniscus (2× Asph) | Unmatched (moldable crown, nd = 1.56867, νd = 58.50) |
| L31 | Biconcave Negative (2× Asph) | Unmatched (moldable flint, nd = 1.68201, νd = 31.43) |
| L32 | Biconvex Positive | S-LAH58 (OHARA) |
Detailed analysis available in the interactive viewer above.