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打算設(shè)計一個復(fù)雜的變焦鏡頭，于是我參考Don的書《Lens Design Automatic and quasi-autonomous computational methods andtechniques》取其中第四十二章：A zoom lens from scratch 打開例子文件（我一般喜歡用online tutorial的代碼或者書中代碼修改，進行修改為： !\\OMAf7  Z9i~>k
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GN+!o($ 然后開始運行SYNOPSYS開始查找初始結(jié)構(gòu)，發(fā)現(xiàn)速度并不快。優(yōu)化了半小時后，覺得有問題，但是又找不出毛病，于是發(fā)郵件給Don請求幫助。 y0'WB`hNQ 半小時后得到回復(fù)（晚上十點發(fā)的，正好美國的上班時間），原文如下： kArF Gb2c The user is making a big mistake.He is asking for 14 elements, and that means 2**14 cases, or 16384 in all. Each additional element doubles the running time. (O/W`qo Irecommend asking for groups of two instead of three elements to start with,which makes only 1024 cases. Then, when you optimize the best one, useAEI to see where you need more elements. This will run 16x faster. A typical run on ZSEARCH takes 20 minutes,and then the AEI runs improve the lens in a deterministic way. The whole job can usually be done in about two hours. le6eorK8 That'sthe smart way to use the code.（經(jīng)典） u]P9ip "Z 6 \? 2=dNX
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f+( The example you senthas other errors. It only asks for four zooms, which is not enough. And it puts the stop on surface 17, which is appropriate for 10 elements butnot 14. You want the stop at the last group. JY%l1:}G3 I ran this job with 10 elements, and ZSEARCH took only 12.3minutes. With 10 zooms it will take longer, but probably less than 1/2 hour. K6
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