[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 iNT
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bJx{mq  
基本條件是 Me`jh8(K\6  
4%KNHeaN  
主鏡必須是拋物面 *jCXH<?R  
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副鏡必須是球面 I}kx;!*b  
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系統包含一組校正鏡 %)i?\(/  
f:KKOLm  
口徑200mm以上 rPv+eM">  
13'tsM&  
焦比不限制 A@?2qX^4  
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視角0.5度以上 oi::/W|A+  
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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. 7M<7^)9  
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2(\~z@g  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic *QG>U[  
OBJ STANDARD       Infinity       Infinity                                  0              0 7
1z$a  
   1 STANDARD       Infinity            480                                220              0 >wNE!Oa*B  
STO STANDARD          -1500           -450               MIRROR           204             -1 $83TA><a  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 ull
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   4 STANDARD       167.5149              6                N-BK7            56              0
lo,
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   5 STANDARD       123.4956       4.762038                                 56              0 E@}t1!E<  
   6 STANDARD      -262.7873              4                N-BK7            56              0 94 H\,}i8  
   7 STANDARD      -173.5643       263.0681                                 56              0 vh"zYl`  
   8 STANDARD       Infinity              0                           24.26983              0  G;Q)A$-  
IMA STANDARD       Infinity                                          24.26983              0

波像差真小啊！

經過不斷的努力,做了一些改進.  w~wpm7  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic M >#kfSF+  
 OBJ STANDARD       Infinity       Infinity                                  0              0 :QT0[P5O  
   1 STANDARD       Infinity            600                                170              0 7SOi9JU_  
   2 STANDARD          -2000           -580               MIRROR           420             -1 owHhlS{  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 #q'J`BC  
   4 STANDARD       559.8055              4                N-BK7           100              0 :_E=&4&g  
   5 STANDARD       237.0107       6.225114                                100              0 8R<2I1xn2  
   6 STANDARD      -1486.626              6                N-BK7           100              0 OBp
<A+a  
   7 STANDARD      -319.3041       350.9258                                100              0 bBA #o\[  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 T{-<G13  
 IMA STANDARD       Infinity                                          44.12228              0 2x%Xx3!