zemax設(shè)計(jì)菲涅耳透鏡時(shí)，  fresnel1參數(shù)中+Depth/-Freq、Radius、conic分別指什么？

Allow me to repost  here for depth/frequency setting :Nofp&  
The main fresnel lens types are: u\C lP#  
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    * Constant groove depth. ty8v 6J#  
    * Contant groove pitch types. H$y-8-&)  
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So if your depth is fixed you will define +ve value in the cell and to specify the "height" or "depth" of each groove feature. If the frequency of the groove is fixed then you use -ve value. Say putting down - 5 this implies that there are 5 grooves with a unit length. Y "/]|'p  
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For radius, this is the curvature of the base surface. If you define one such lens and chaneg the radius and you shall see what it means. A graphic tells lounder than words. 6i1LjLB  
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For conic: check conic section using Wikipedia and you should see what conic constant means. P9T}S  
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