|
|
打算設(shè)計(jì)一個(gè)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(jìn)行修改為： X|F([,o  do9@ 6[{Sv
=kUN ^hb (:>: tcE
1wl8
然后開始運(yùn)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(shí)后，覺得有問(wèn)題，但是又找不出毛病，于是發(fā)郵件給Don請(qǐng)求幫助。 0'm4
) \ 半小時(shí)后得到回復(fù)（晚上十點(diǎn)發(fā)的，正好美國(guó)的上班時(shí)間），原文如下： l k6*?EJ 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. <=*xwI&q 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. &z r..i4O That'sthe smart way to use the code.（經(jīng)典） c"3 a,& YN
~ 7
葫芦岛市|
桓仁|
广宗县|
沈阳市|
鲁山县|
凤山县|
义乌市|
崇义县|
石河子市|
石狮市|
聂荣县|
江永县|
大邑县|
建德市|
汉阴县|
抚州市|
安岳县|
海城市|
博湖县|
清水河县|
酒泉市|
和林格尔县|
四会市|
长春市|
梅河口市|
古蔺县|
化州市|
阳西县|
阿勒泰市|
垣曲县|
江永县|
常熟市|
增城市|
五台县|
习水县|
恩施市|
宿迁市|
上思县|
南汇区|
麻城市|
儋州市|
|
