[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 ;R!
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基本條件是 z&0V21"l  
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主鏡必須是拋物面 K?je(t^  
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副鏡必須是球面 hrD6r=JT<~  
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系統包含一組校正鏡 YeLOd  
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口徑200mm以上 dmy-}.pqN  
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焦比不限制 2~DPq p[  
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視角0.5度以上 `RcNqPY#S  
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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. 5uer [1A  
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[BBKj)IK  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic n y)P  
OBJ STANDARD       Infinity       Infinity                                  0              0 RKkI/Z0  
   1 STANDARD       Infinity            480                                220              0 E3skC%}  
STO STANDARD          -1500           -450               MIRROR           204             -1 syf"{bBe  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 Z5L1^  
   4 STANDARD       167.5149              6                N-BK7            56              0 cvA\C_  
   5 STANDARD       123.4956       4.762038                                 56              0 ..!-)q'?  
   6 STANDARD      -262.7873              4                N-BK7            56              0 }YP7x|  
   7 STANDARD      -173.5643       263.0681                                 56              0 rb'GveW[  
   8 STANDARD       Infinity              0                           24.26983              0 8$kXC+  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. #C1A5JE&  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic `X<`j6zaG  
 OBJ STANDARD       Infinity       Infinity                                  0              0 [AX"ne#M*  
   1 STANDARD       Infinity            600                                170              0 dH2]ZE0V  
   2 STANDARD          -2000           -580               MIRROR           420             -1 \q|7,S,5  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 ^jha:d  
   4 STANDARD       559.8055              4                N-BK7           100              0 |\%F(d330  
   5 STANDARD       237.0107       6.225114                                100              0 MkW1FjdP  
   6 STANDARD      -1486.626              6                N-BK7           100              0 c@9Z&2)  
   7 STANDARD      -319.3041       350.9258                                100              0 dxn0HXU  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 AX!>l;  
 IMA STANDARD       Infinity                                          44.12228              0 r=DHt&x=  

波像差真小啊！