[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 ]Ojt3)fB  
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基本條件是 _INUJc  
 Fszk?0T  
主鏡必須是拋物面 q%vUEQLBp  
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副鏡必須是球面 68!fcK  
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系統包含一組校正鏡 \~H"!vj
  
:gVjBF2  
口徑200mm以上 vPsX!m[#  
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焦比不限制 X>6a@$MxP  
C/Z"W@7#;  
視角0.5度以上 .eAC!R  
*3K"Kc2  
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. Mww]l[1'EL  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic o|W? a#_\  
OBJ STANDARD       Infinity       Infinity                                  0              0 ybG)=0  
   1 STANDARD       Infinity            480                                220              0 rh_({rvQ  
STO STANDARD          -1500           -450               MIRROR           204             -1 WI,=?~-   
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 {EUH#':  
   4 STANDARD       167.5149              6                N-BK7            56              0 !T~d5^l!  
   5 STANDARD       123.4956       4.762038                                 56              0 &F}+U#H  
   6 STANDARD      -262.7873              4                N-BK7            56              0 A!kyga6F5  
   7 STANDARD      -173.5643       263.0681                                 56              0 K0g:Q*J-  
   8 STANDARD       Infinity              0                           24.26983              0 I@ k8
^  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. 5Y=\~,%\oH  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic u7&'3ef  
 OBJ STANDARD       Infinity       Infinity                                  0              0 LIC~Kehi  
   1 STANDARD       Infinity            600                                170              0 j& iL5J;  
   2 STANDARD          -2000           -580               MIRROR           420             -1 F ssEs!#  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 Y;F R"~^  
   4 STANDARD       559.8055              4                N-BK7           100              0 RIEv*2_O  
   5 STANDARD       237.0107       6.225114                                100              0 |cGeL[  
   6 STANDARD      -1486.626              6                N-BK7           100              0 Vnj/>e3  
   7 STANDARD      -319.3041       350.9258                                100              0 Gj19KQ1G  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 h+~df(S.  
 IMA STANDARD       Infinity                                          44.12228              0 :n9xH  

波像差真小啊！