[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 %9ef[,WT  
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基本條件是 ;]AJ_h(<`  
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主鏡必須是拋物面
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副鏡必須是球面 7=yV8.cD  
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系統包含一組校正鏡 fLM5L_S}Y  
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口徑200mm以上 .f)&;Af^  
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焦比不限制 n.+%eYM<  
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視角0.5度以上 epw*Px  
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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. M\4pTcz{  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic KVQ^-^  
OBJ STANDARD       Infinity       Infinity                                  0              0 [6+iR  
   1 STANDARD       Infinity            480                                220              0 1%Yd] 1c(  
STO STANDARD          -1500           -450               MIRROR           204             -1 04;E^,V  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 \YXzq<7  
   4 STANDARD       167.5149              6                N-BK7            56              0 yjcZTvjJ  
   5 STANDARD       123.4956       4.762038                                 56              0 Vf28R,~m  
   6 STANDARD      -262.7873              4                N-BK7            56              0 )Z4i

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   7 STANDARD      -173.5643       263.0681                                 56              0 JATW'HWC|I  
   8 STANDARD       Infinity              0                           24.26983              0 ?w^MnK0U)  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. J kxsua  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 3}}8ukq  
 OBJ STANDARD       Infinity       Infinity                                  0              0 Q~f mVWq  
   1 STANDARD       Infinity            600                                170              0 /.WIED}>  
   2 STANDARD          -2000           -580               MIRROR           420             -1 /!'Png0!  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 d{Cg3v`Rd  
   4 STANDARD       559.8055              4                N-BK7           100              0 K!,9qH  
   5 STANDARD       237.0107       6.225114                                100              0 YU`}T<;bg  
   6 STANDARD      -1486.626              6                N-BK7           100              0
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   7 STANDARD      -319.3041       350.9258                                100              0 M`&78j  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 0|DyYu  
 IMA STANDARD       Infinity                                          44.12228              0 $|tk?Sps  

波像差真小啊！