[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7iguFQ  
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基本條件是 }i./,  
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主鏡必須是拋物面 kc\^xq~  
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副鏡必須是球面 me#
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系統包含一組校正鏡 hkee,PiiP  
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口徑200mm以上 U`D/~KJ{Y  
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焦比不限制 9^<t0oY  
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視角0.5度以上 Oj6-  
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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. {Tl5,CAz  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 61HU_!A8S  
OBJ STANDARD       Infinity       Infinity                                  0              0 Wqy|Y*$qT  
   1 STANDARD       Infinity            480                                220              0 >fJY
 
STO STANDARD          -1500           -450               MIRROR           204             -1 $+!/=8R)  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 $a>,sL&;  
   4 STANDARD       167.5149              6                N-BK7            56              0 LWuciHfd+  
   5 STANDARD       123.4956       4.762038                                 56              0 'kf]l=i[n  
   6 STANDARD      -262.7873              4                N-BK7            56              0 BMkN68q  
   7 STANDARD      -173.5643       263.0681                                 56              0 w xKlBx7  
   8 STANDARD       Infinity              0                           24.26983              0 /qa{*"2Qo  
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. /]U),Lb
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic J497 >w[  
 OBJ STANDARD       Infinity       Infinity                                  0              0 *@;bWUJ  
   1 STANDARD       Infinity            600                                170              0 ZR]p7{8B  
   2 STANDARD          -2000           -580               MIRROR           420             -1 ,#Pp_f<  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 g"{`g6(+  
   4 STANDARD       559.8055              4                N-BK7           100              0 \jmT#Gt`9  
   5 STANDARD       237.0107       6.225114                                100              0 >o:y.2yCe  
   6 STANDARD      -1486.626              6                N-BK7           100              0 [n]C  
   7 STANDARD      -319.3041       350.9258                                100              0 h\T}$jgfWm  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 v[~~q  
 IMA STANDARD       Infinity                                          44.12228              0 E]w2 {%