Table 1 Derived focusing performance for different cases of the lens spacing
From: Broadband Metallic Planar Microlenses in an Array: the Focusing Coupling Effect
Spacing a (μm) | Focal length (μm) | FWHM (μm) | DOF (μm) | I max (a.u.) |
---|---|---|---|---|
0 | 1.204 | 0.62 | 1.919 | 1.226 |
1 | 1.375 | 0.66 | 2.090 | 1.544 |
2 | 1.545 | 0.72 | 2.559 | 1.395 |
3 | 1.545 | 0.70 | 2.132 | 1.435 |
4 | 1.503 | 0.72 | 2.474 | 1.349 |
Isolated lens | 1.509 | 0.72 | 2.317 | 1.374 |