[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 P'tXG  
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基本條件是 G8+&fn6  
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主鏡必須是拋物面 %p
 
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副鏡必須是球面 85G-`T  
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系統包含一組校正鏡 !hq*WtIk  
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口徑200mm以上 N!~]D[D  
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焦比不限制 dX/7n=  
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視角0.5度以上 a r8iuwfZ  
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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. xAd@.^  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 3A`]Rk   
OBJ STANDARD       Infinity       Infinity                                  0              0 rc[~S  
   1 STANDARD       Infinity            480                                220              0 gQ0,KYmI3_  
STO STANDARD          -1500           -450               MIRROR           204             -1 k/{WlLN  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 w
X}p6yyN  
   4 STANDARD       167.5149              6                N-BK7            56              0 k^;n$r"i5  
   5 STANDARD       123.4956       4.762038                                 56              0 KHZ[drb6$  
   6 STANDARD      -262.7873              4                N-BK7            56              0 $|g1 _;(G  
   7 STANDARD      -173.5643       263.0681                                 56              0 -}UY2)  
   8 STANDARD       Infinity              0                           24.26983              0 oB5\^V$  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. z8a{M$-Q
 
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic `&c[s%0  
 OBJ STANDARD       Infinity       Infinity                                  0              0 C2rG3X^~Jm  
   1 STANDARD       Infinity            600                                170              0 V.`hk^V,  
   2 STANDARD          -2000           -580               MIRROR           420             -1 Q +l{> sL  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 j7&#R+f  
   4 STANDARD       559.8055              4                N-BK7           100              0 )x\%*ewY  
   5 STANDARD       237.0107       6.225114                                100              0  m,+PYq  
   6 STANDARD      -1486.626              6                N-BK7           100              0 E8kD#tL  
   7 STANDARD      -319.3041       350.9258                                100              0 9{fP.ifdv7  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 m33&obSP  
 IMA STANDARD       Infinity                                          44.12228              0 YM;ro5_KF  

波像差真小啊！