[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 9s4>hw@u  
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基本條件是 Lrjp  
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主鏡必須是拋物面 \%}w7
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副鏡必須是球面 \)M EM=U  
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系統包含一組校正鏡 ]kdU]}z  
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口徑200mm以上 U+G8Hs/y  
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焦比不限制 EG!Nsb^,  
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視角0.5度以上 ^6@6BYf)  
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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. BD2Gv)?g  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic ~Dbu;cqR@  
OBJ STANDARD       Infinity       Infinity                                  0              0 o0kKf+[  
   1 STANDARD       Infinity            480                                220              0 LS/ZZAN u  
STO STANDARD          -1500           -450               MIRROR           204             -1 Zx&=K"  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 J3 xi5S  
   4 STANDARD       167.5149              6                N-BK7            56              0 0ZJrK\K;  
   5 STANDARD       123.4956       4.762038                                 56              0 NQx>u  
   6 STANDARD      -262.7873              4                N-BK7            56              0 Dc9Fb^]QOG  
   7 STANDARD      -173.5643       263.0681                                 56              0 QfV:&b`  
   8 STANDARD       Infinity              0                           24.26983              0 Zt \3y  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. S%7%@Qs"%  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic @,SN8K0T  
 OBJ STANDARD       Infinity       Infinity                                  0              0 [KsVI.gn  
   1 STANDARD       Infinity            600                                170              0 XaYgl&x'!x  
   2 STANDARD          -2000           -580               MIRROR           420             -1 hJGWa%`  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 }>m3V2>[  
   4 STANDARD       559.8055              4                N-BK7           100              0 k6??+b:rE  
   5 STANDARD       237.0107       6.225114                                100              0 1#jvr_ ga  
   6 STANDARD      -1486.626              6                N-BK7           100              0 n$jf(
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   7 STANDARD      -319.3041       350.9258                                100              0 etL)T":XV  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 fZt3cE\  
 IMA STANDARD       Infinity                                          44.12228              0 !Nno@SP@  

波像差真小啊！