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[讨论]zemax菲涅耳透镜设计 [复制链接]

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离线troer

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只看楼主倒序阅读楼主发表于: 2010-06-10

关键词： ZEMAX 菲涅耳透镜参数

zemax设计菲涅耳透镜时， fresnel1参数中+Depth/-Freq、Radius、conic分别指什么？

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离线hopebox

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只看该作者 1楼发表于: 2010-06-10

Allow me to repost  here for depth/frequency setting
The main fresnel lens types are:

    * Constant groove depth.
    * Contant groove pitch types.

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.

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.

For conic: check conic section using Wikipedia and you should see what conic constant means.