US 2016/0341934 A1 — Romeo I. Mercado
| 6 ELEMENTS / 6 GROUPS |
| PATENT f = 4.10 mm |
| f/1.8 |
| 74° FULL FIELD |
| 12 ASPHERICAL SURFACES |
Example 11 is modeled at infinity only. The patent does not establish focus travel or a minimum focus distance for this example.
| Element | Type | Glass |
|---|---|---|
| L1 | Biconvex Positive (2× Asph) | Unmatched (patent-specified plastic, nd=1.545, vd=55.9) |
| L2 | Negative Meniscus (2× Asph) | Unmatched (patent-specified plastic, nd=1.651, vd=21.5) |
| L3 | Negative Meniscus (2× Asph) | Unmatched (patent-specified plastic, nd=1.651, vd=21.5) |
| L4 | Positive Meniscus (2× Asph) | Unmatched (patent-specified plastic, nd=1.545, vd=55.9) |
| L5 | Negative Meniscus (2× Asph) | Unmatched (patent-specified plastic, nd=1.545, vd=55.9) |
| L6 | Biconcave Negative (2× Asph) | Unmatched (patent-specified plastic, nd=1.661, vd=20.4) |