US 2018/0246292 A1 — Example 1
| 16 elements / 12 groups |
| 1 aspherical (2 surfaces) |
| 1 Super ED + 3 ED |
| Floating IF + 5-stop OIS |
Floating focus: G2 moves toward image, G3 moves toward object; G1 and G4 stationary. OIS via G4a lateral shift.
| Element | Type | Glass |
|---|---|---|
| L1a | Biconvex Positive | S-LAL18 (OHARA lanthanum crown) |
| L1b | Biconvex Positive | S-FPL51 (OHARA ED fluorophosphate) |
| L1c | Biconcave Negative | E-F1 (HOYA, 626/357 dense flint) |
| L1d | Biconvex Pos. (2× Asph) | 583595 — S-BAL41 (OHARA barium crown) |
| L2a | Biconcave Negative | S-BAL35 (OHARA barium crown) |
| L2b | Negative Meniscus | S-NBH52 (OHARA) |
| L2c | Positive Meniscus | TAFD40 (Hoya ultra-high-index dense flint) |
| L3a | Biconvex Positive | S-FPL55 (OHARA Super ED — calcium-fluoride equivalent) |
| L3b | Biconvex Positive | S-FPL51 (OHARA ED fluorophosphate) |
| L3c | Negative Meniscus | S-TIH53 (OHARA dense flint) |
| L4aa | Positive Meniscus | E-FDS2 (HOYA, 003/193 ultra-high-index dense flint) |
| L4ab | Biconcave Negative | S-LAM59 (OHARA, 697/485 lanthanum crown) |
| L4ac | Negative Meniscus | S-FPM3 (OHARA fluorophosphate) |
| L4ba | Positive Meniscus | S-LAH98 (OHARA ultra-high-index lanthanum) |
| L4bb | Biconvex Positive | S-BSL7 / N-BK7 (standard borosilicate crown) |
| L4bc | Negative Meniscus | S-NPH3 (OHARA ultra-high-index dense flint, lowest νd in design) |
Detailed analysis available in the interactive viewer above.