It makes the central maximum in the Airy pattern narrower and increases the depth of focus.Calculation results have shown that this kind of apodizer is superior to the phase-shifting apodizer.

模拟计算结果表明,在中心峰值强度相等的条件下,用该器件所获得的超分辨效果比目前最好的纯相位型超分辨光阑要好。