JP 2008-151949A EXAMPLE 2 — NIKON / SENSUI
| 13 ELEMENTS / 10 GROUPS |
| f ≈ 24.6 mm |
| F/3.5 |
| 2ω ≈ 101° (design image circle for ±11.5 mm shift) |
| 3 ASPHERICAL SURFACES (2 composite + 1 polished) |
| 3 ED ELEMENTS (S-FPL51) |
Rear-group unit focus: G2 and aperture stop translate together along the axis while G1 remains fixed. Nikon markets this as 'Rear Focusing' with 'Close Range Correction.'
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | S-LAH65V (OHARA) |
| L11r | Neg. Meniscus (1× Asph) | UV-cure resin |
| L12 | Negative Meniscus | S-LAH63 (OHARA) |
| L13 | Negative Meniscus | S-BAL42 (OHARA) |
| L13r | Neg. Meniscus (1× Asph) | UV-cure resin |
| L14 | Biconvex Positive | S-TIH14 (OHARA) |
| L15 | Biconcave Negative | S-FPL51 (OHARA) — ED |
| L16 | Biconvex Positive | S-BAL14 (OHARA) |
| L17 | Negative Meniscus | S-LAH53 (OHARA) |
| L18 | Negative Meniscus | S-LAH65V (OHARA) |
| L19 | Biconvex Positive | S-BAL14 (OHARA) |
| L21 | Equi-Biconvex Positive | S-FPL51 (OHARA) — ED |
| L22 | Biconcave Negative | S-LAH60 (OHARA) |
| L23 | Biconvex Positive | S-FPL51 (OHARA) — ED |
| L24 | Pos. Meniscus (1× Asph) | S-BSL7 (OHARA) / N-BK7 (Schott) |
Detailed analysis available in the interactive viewer above.