[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 S^-DK~Xt4  
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基本條件是 X iS1\*  
/1"(cQ%?  
主鏡必須是拋物面 En~5"yW5>]  
;YA(|h<  
副鏡必須是球面 7&t-pv92*  
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系統包含一組校正鏡 oe%}?u  
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口徑200mm以上 (!ZM{Js%  
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焦比不限制 rf $QxJ  
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視角0.5度以上 /xsF90c\h  
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以下是我的結果,目前覺得副鏡的口徑太大,不知道有無改進的可能. n!YKz"$  
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M9!HQ   
Surf     Type         Radius      Thickness                Glass      Diameter          Conic C<NLE-  
OBJ STANDARD       Infinity       Infinity                                  0              0 G9Y#kBr  
   1 STANDARD       Infinity            480                                220              0 `bFff%_  
STO STANDARD          -1500           -450               MIRROR           204             -1 #
r#1JtT  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 !k6K?xt  
   4 STANDARD       167.5149              6                N-BK7            56              0 J2::'Hw*s  
   5 STANDARD       123.4956       4.762038                                 56              0 #bUXgn>  
   6 STANDARD      -262.7873              4                N-BK7            56              0 ~D<IB#C  
   7 STANDARD      -173.5643       263.0681                                 56              0 A0o-:n Fu  
   8 STANDARD       Infinity              0                           24.26983              0 [<2<Y  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. *]AdUEV?  
P+s!|7'  
^5H >pat  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic )\eI;8  
 OBJ STANDARD       Infinity       Infinity                                  0              0 |2RC#]/-Y  
   1 STANDARD       Infinity            600                                170              0 luo  
   2 STANDARD          -2000           -580               MIRROR           420             -1 ()5[x.xK@  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 !9[>L@#G  
   4 STANDARD       559.8055              4                N-BK7           100              0 <J`0mVOX  
   5 STANDARD       237.0107       6.225114                                100              0 \MbB#  
   6 STANDARD      -1486.626              6                N-BK7           100              0 [3(74  
   7 STANDARD      -319.3041       350.9258                                100              0 fDT%!  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 %/|9@er  
 IMA STANDARD       Infinity                                          44.12228              0 AyNI$Q6Z  

波像差真小啊！