[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 !eb}jL  
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基本條件是 oK3uGPi  
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主鏡必須是拋物面 uP,{yna(  
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副鏡必須是球面 @NBWNgBv  
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系統包含一組校正鏡 M6n9>aW4  
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口徑200mm以上 f"XFf@!  
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焦比不限制 KX*Hev'K  
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視角0.5度以上 xw60l&s.\L  
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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. (nP 6Xq  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 5j(3pV`_  
OBJ STANDARD       Infinity       Infinity                                  0              0 ]:* 8 Mb#  
   1 STANDARD       Infinity            480                                220              0 (W~jr-O^  
STO STANDARD          -1500           -450               MIRROR           204             -1 $YDZtS&h  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 }qUNXE@  
   4 STANDARD       167.5149              6                N-BK7            56              0 Y.$InQ gL  
   5 STANDARD       123.4956       4.762038                                 56              0 x?Wt\<|h!  
   6 STANDARD      -262.7873              4                N-BK7            56              0 /a7tg+:  
   7 STANDARD      -173.5643       263.0681                                 56              0 [BS3y`c  
   8 STANDARD       Infinity              0                           24.26983              0 g*UI~rp  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. KdFQlQaj  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 'j$iSW&  
 OBJ STANDARD       Infinity       Infinity                                  0              0 b@N|sXt&C  
   1 STANDARD       Infinity            600                                170              0 xkl'Y*  
   2 STANDARD          -2000           -580               MIRROR           420             -1 1W-t})!a  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 q /|<>s  
   4 STANDARD       559.8055              4                N-BK7           100              0 xZFha=#  
   5 STANDARD       237.0107       6.225114                                100              0 uc%75TJ@  
   6 STANDARD      -1486.626              6                N-BK7           100              0 ltt%X].[  
   7 STANDARD      -319.3041       350.9258                                100              0 J{$C}8V  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 %Ua*}C   
 IMA STANDARD       Infinity                                          44.12228              0  3P/T`)V  

波像差真小啊！