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有幾個問題想請教下大家，真的很急 )}"`$6:k`  
1：為什么可用用paraxial理想透鏡做優(yōu)化？它的功能把平行光線匯聚于一點矯正像差的吧，但為什么可以用來做準直呢？而且thickness和focal length的數(shù)值要一樣才可以？ Q`.q,T8I  
2：在網上找到一篇用zemax做簡單的準直優(yōu)化的文章，是一個非序列透鏡，材質是pmma，做成反光杯的模樣，當做一個tir透鏡，但是這樣不會有光線漏掉嗎？他并沒有介紹要鍍膜或怎么樣 KJS-{ed  
不知道為什么不能上傳圖片和附件，那篇文章叫做《用zemax設計簡易led準直鏡》 x![.C,O  
再次感謝！

paraxial surface/lens can be optimized so that you know the power of a real lens you will need to use. 5D<ZtsXE  
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for your second question, if rays' incedent angle is less than the critical angle then you would experience lost. the information you provided is not sufficient so it would be hard to make a comment about the actual design concept though. If reflecting thin film was applied you would make use of the ideal coating in ZEMAX to have a quick glance on the performance .

hopebox:paraxial surface/lens can be optimized so that you know the power of a real lens you will need to use.
for your second question, if rays' incedent angle is less than the critical angle then you would experience lost. the information you provided is not s .. (2012-05-31 21:35)  V?wV*]c  

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