WO 2019/187633 EXAMPLE 1 — SONY / MATSUOKA, MIYAGAWA, MATSUMOTO
| 13 ELEMENTS / 10 GROUPS |
| f ≈ 131.0 mm |
| F/1.854 |
| 2ω ≈ 18.8° |
| 1 ASPHERICAL SURFACE (XA) |
Floating inner focus: GR2 (3 elements) moves toward image, GR3 (2 elements) moves toward object. Four XD linear motors, two per group.
| Element | Type | Glass |
|---|---|---|
| L11 | Positive Meniscus | S-PHM52 (OHARA) |
| L12 | Positive Meniscus | FPL53 class (fluorophosphate, Super ED — 437/951) |
| L13 | Negative Meniscus | S-NBH8 (OHARA) |
| L14 | Positive Meniscus | S-FPM2 (OHARA) |
| L15 | Pos. Meniscus (1× Asph) | S-BAL35 (OHARA) |
| L21 | Positive Meniscus | Dense flint (959/175, vendor uncertain — anomalous dispersion, θgF ≈ 0.660) |
| L22 | Negative Meniscus | Lanthanum crown (772/496, class S-LAM) |
| L23 | Negative Meniscus | S-LAL14 (OHARA) |
| L31 | Negative Meniscus | Titanium flint (741/278, class S-TIH) |
| L32 | Biconvex Positive | S-PHM52 (OHARA) |
| L41 | Positive Meniscus | Lanthanum heavy flint (806/333, vendor uncertain) |
| L42 | Biconcave Negative | S-NSL36 (OHARA) |
| L43 | Negative Meniscus | Lanthanum heavy flint (892/371, class S-LAH) |
Detailed analysis available in the interactive viewer above.