US 2020/0319427 A1 Example 1 — Nittoh / Yazaki
| 10 ELEMENTS / 6 GROUPS |
| f ≈ 65.0 mm |
| F/2.8 |
| 2ω ≈ 46° |
| ALL SPHERICAL |
Front-group focus: G1, stop, and G2 move as a unit toward the object. G3 is fixed.
| Element | Type | Glass |
|---|---|---|
| L11 | Negative Meniscus | S-TIM27 (OHARA) |
| L12 | Positive Meniscus | S-LAH55V (OHARA) |
| L13 | Positive Meniscus | S-BAL35 (OHARA) |
| L14 | Negative Meniscus | S-TIM5 (OHARA) |
| L21 | Negative Meniscus | S-TIM8 (OHARA) |
| L22 | Positive Meniscus | S-FPL51 (OHARA) |
| L23 | Biconvex Positive | S-FPM3 (OHARA) |
| L31 | Positive Meniscus | S-LAH92 (OHARA) |
| L32 | Negative Meniscus | S-TIM35 (OHARA) |
| L33 | Negative Meniscus | S-FSL5 (OHARA) |
Detailed analysis available in the interactive viewer above.