[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 8t.dPy<  
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基本條件是 g*]E>SQ=  
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主鏡必須是拋物面 $ehg@WK}.  
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副鏡必須是球面 ;WI]vn  
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系統包含一組校正鏡 \OHv|8!EI@  
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口徑200mm以上 #Mi|IwL  
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焦比不限制 2X@G"  
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視角0.5度以上 ;1LG&h,K  
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以下是我的結果,目前覺得副鏡的口徑太大,不知道有無改進的可能. 
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B 9  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic ?*K<*wBw#  
OBJ STANDARD       Infinity       Infinity                                  0              0 dokuyiN\  
   1 STANDARD       Infinity            480                                220              0 z/vD
gH!s  
STO STANDARD          -1500           -450               MIRROR           204             -1 aW@oE ~`  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 AA7#c7  
   4 STANDARD       167.5149              6                N-BK7            56              0 V<$*Y>;  
   5 STANDARD       123.4956       4.762038                                 56              0 A!;meVUs  
   6 STANDARD      -262.7873              4                N-BK7            56              0 VC=6uB  
   7 STANDARD      -173.5643       263.0681                                 56              0 B/Ba
5z"r$  
   8 STANDARD       Infinity              0                           24.26983              0 ~R!gJTO9  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. Cd9t{pQD4  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic ],$6&Cm  
 OBJ STANDARD       Infinity       Infinity                                  0              0 x:vrK#8D>  
   1 STANDARD       Infinity            600                                170              0 Rgs3A)[`d/  
   2 STANDARD          -2000           -580               MIRROR           420             -1 4Z],+?.[  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 }P16Xb)p  
   4 STANDARD       559.8055              4                N-BK7           100              0 qY# m*R  
   5 STANDARD       237.0107       6.225114                                100              0 j@_nI~7f}  
   6 STANDARD      -1486.626              6                N-BK7           100              0 lW&[mnR  
   7 STANDARD      -319.3041       350.9258                                100              0 O<Jwaap  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 (J/>Gy)d  
 IMA STANDARD       Infinity                                          44.12228              0 8QPT\~  

波像差真小啊！