[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 td23Z1Elk#  
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基本條件是 G;/l[mvh,  
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主鏡必須是拋物面 B7YE+  
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副鏡必須是球面 e=eip?p  
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系統包含一組校正鏡 ^U96p0H"T  
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口徑200mm以上 P=\Hi.]%  
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焦比不限制 V<;_wO^  
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視角0.5度以上 ir>+p>s.  
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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. Ap;^\5  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic Q9B!0G.-bs  
OBJ STANDARD       Infinity       Infinity                                  0              0 n%iL+I  
   1 STANDARD       Infinity            480                                220              0 "r3h+(5  
STO STANDARD          -1500           -450               MIRROR           204             -1 7~'%ThUb$-  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 gs0`nysM#  
   4 STANDARD       167.5149              6                N-BK7            56              0 RrYNtc  
   5 STANDARD       123.4956       4.762038                                 56              0 Msfxce  
   6 STANDARD      -262.7873              4                N-BK7            56              0 :}/\hz ,  
   7 STANDARD      -173.5643       263.0681                                 56              0 ap
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   8 STANDARD       Infinity              0                           24.26983              0
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IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. ]VtP7Y  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic b].U/=Hs  
 OBJ STANDARD       Infinity       Infinity                                  0              0 [eTEK W]  
   1 STANDARD       Infinity            600                                170              0 xy$aFPH!-  
   2 STANDARD          -2000           -580               MIRROR           420             -1 Gi$\th,  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 US-f<Wq  
   4 STANDARD       559.8055              4                N-BK7           100              0 0JR)-*  
   5 STANDARD       237.0107       6.225114                                100              0 D;+Y0B  
   6 STANDARD      -1486.626              6                N-BK7           100              0 ncOl}\Q9  
   7 STANDARD      -319.3041       350.9258                                100              0 `zl,|}u)  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 p-rQ'e  
 IMA STANDARD       Infinity                                          44.12228              0 48G^$T{  

波像差真小啊！