[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 JY~CMR5#.O  
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基本條件是 ^MG"
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主鏡必須是拋物面 a|4Q6Ycu  
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副鏡必須是球面 p%K(dA  
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系統包含一組校正鏡 g}L>k}I?!W  
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口徑200mm以上 QZ*gR#K]Sz  
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焦比不限制 p+dOw#  
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視角0.5度以上 _KkP{g,Y  
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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. i6g=fx6j*  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 2gR*]?C*  
OBJ STANDARD       Infinity       Infinity                                  0              0 H8 xhE~'t  
   1 STANDARD       Infinity            480                                220              0  T;V!>W37  
STO STANDARD          -1500           -450               MIRROR           204             -1 Xg*](>/\,  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 Wrh$`JC  
   4 STANDARD       167.5149              6                N-BK7            56              0 1I)oT-~  
   5 STANDARD       123.4956       4.762038                                 56              0 E>`|?DE@  
   6 STANDARD      -262.7873              4                N-BK7            56              0 ?GW}:'z  
   7 STANDARD      -173.5643       263.0681                                 56              0 m(0X_&&?z  
   8 STANDARD       Infinity              0                           24.26983              0 .8T0OQ4  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. C4P<GtR9  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic
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 OBJ STANDARD       Infinity       Infinity                                  0              0 u3GBAjPsIk  
   1 STANDARD       Infinity            600                                170              0 ;i'[c`  
   2 STANDARD          -2000           -580               MIRROR           420             -1 B4wRwrVI>  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 f'H|K+bO  
   4 STANDARD       559.8055              4                N-BK7           100              0 WmN( (  
   5 STANDARD       237.0107       6.225114                                100              0 2J8:_Ql3I  
   6 STANDARD      -1486.626              6                N-BK7           100              0 JXYZ5&[  
   7 STANDARD      -319.3041       350.9258                                100              0 e,MsF4'  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 -Ou.C7ol  
 IMA STANDARD       Infinity                                          44.12228              0 +
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波像差真小啊！