[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 $={^':Uh  
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基本條件是 0CtPq`!  
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主鏡必須是拋物面 J Gpy$T{t  
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副鏡必須是球面 Nfdh0v  
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系統包含一組校正鏡 exfJm'R?n  
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口徑200mm以上 &1(PS)s  
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焦比不限制 D(YNa  
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視角0.5度以上  0+P[
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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. jeLC)lQ*  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic X1J
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OBJ STANDARD       Infinity       Infinity                                  0              0 @x4IxGlUs  
   1 STANDARD       Infinity            480                                220              0 uLK4tQ  
STO STANDARD          -1500           -450               MIRROR           204             -1 rf[w&~R  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 _(&XqEX  
   4 STANDARD       167.5149              6                N-BK7            56              0 x]X!nx6G  
   5 STANDARD       123.4956       4.762038                                 56              0 0)Wrfa  
   6 STANDARD      -262.7873              4                N-BK7            56              0 }o{6  
   7 STANDARD      -173.5643       263.0681                                 56              0 Pm}
 
   8 STANDARD       Infinity              0                           24.26983              0 *(pmFEc
 
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. F4|Z:e,Hr  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic "dN4EA
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 OBJ STANDARD       Infinity       Infinity                                  0              0 wP: w8O  
   1 STANDARD       Infinity            600                                170              0 {"x>ewAf  
   2 STANDARD          -2000           -580               MIRROR           420             -1 rbEUq.Yk]~  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 "Om4P|  
   4 STANDARD       559.8055              4                N-BK7           100              0 ^ rB7&96C,  
   5 STANDARD       237.0107       6.225114                                100              0 6|O2i j-J  
   6 STANDARD      -1486.626              6                N-BK7           100              0 w.2[Xx~  
   7 STANDARD      -319.3041       350.9258                                100              0 Y>l92=G  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 )8rN  
 IMA STANDARD       Infinity                                          44.12228              0 TcP (?v  

波像差真小啊！