【摘要】 提出了一种新的二元光学器件——分数菲涅耳波带片的概念及其设计制作方法。这种分数菲涅耳波带片具有一定程度的反衍射能力,能使部分因衍射而散开的光能向光束中心会聚,延长辐射光束的高强度作用距离。用之可以增加激光光束和射电雷达的有效作用距离。更多还原

【Abstract】 A design method for fraction Fresnel zone plate (FFZP)which is a new kind of binary optics element is presented. The anti-diffraction character of fraction Fresnel zone plates is investigated. By use of FFZP, the propagation distance of radiation beams with high intensity can be prolonged use of FFZP, the effective working distance of radars can also be increased.更多还原