[讨论]一個雙反系統的改進 [复制链接]

這是我最近在想的一個設計 ;9PJ K5>~  
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基本條件是 Au<NUc 2  
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主鏡必須是拋物面 XZde}zUWn  
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副鏡必須是球面
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系統包含一組校正鏡 ))- B`vi  
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口徑200mm以上 {Z%4Pg  
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焦比不限制 nb::,  
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視角0.5度以上 qIIc>By(\"  
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以下是我的結果,目前覺得副鏡的口徑太大,不知道有無改進的可能. ~3bH2,{L[  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic DdDwMq  
OBJ STANDARD       Infinity       Infinity                                  0              0 *gF8"0s  
   1 STANDARD       Infinity            480                                220              0 3pg_`  
STO STANDARD          -1500           -450               MIRROR           204             -1 5q4sxY9T  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 TK^9!3  
   4 STANDARD       167.5149              6                N-BK7            56              0 50h?#u6?  
   5 STANDARD       123.4956       4.762038                                 56              0 z0|%h?N  
   6 STANDARD      -262.7873              4                N-BK7            56              0 3H"bivK
 
   7 STANDARD      -173.5643       263.0681                                 56              0 j`tBki:  
   8 STANDARD       Infinity              0                           24.26983              0 h[HFZv~{  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. svT1b'=\$I  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 9pY`_lxa>  
 OBJ STANDARD       Infinity       Infinity                                  0              0 ;_]Z3  
   1 STANDARD       Infinity            600                                170              0 U`25bb1Wj  
   2 STANDARD          -2000           -580               MIRROR           420             -1 `y%1K|Y=  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 E 0k1yA  
   4 STANDARD       559.8055              4                N-BK7           100              0 R\VM6>SN'S  
   5 STANDARD       237.0107       6.225114                                100              0 g#Doed.30=  
   6 STANDARD      -1486.626              6                N-BK7           100              0 aM2[<m}  
   7 STANDARD      -319.3041       350.9258                                100              0 f*uD9l%/  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 iD/
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 IMA STANDARD       Infinity                                          44.12228              0 97XGJ1HI  

波像差真小啊！