Effect of Discrete Levels Width Error on the Optical Performance of the Diffractive Binary Lens

Table 3

Diameters and thickness of each binary zone.

Binary zone’s number	Equivalent phase value (radian)	Radius of each binary zone (mm)	Diameter of each binary zone (mm)	Equivalent sag’s thickness (μm)
1	π/2	11.148	22.295	0.833
2	π	13.089	26.177	1.667
3	3π/2	14.404	28.807	2.498
4	2π	15.426	30.851	3.333