[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 mV$ebFco0  
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基本條件是 *_
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主鏡必須是拋物面 4^F%bXJ)  
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副鏡必須是球面 ^hmV?a:Y  
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系統包含一組校正鏡 r~j [Qm"CJ  
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口徑200mm以上 ]A'{DKR  
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焦比不限制 49$<:{~  
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視角0.5度以上 7|DG1p9C  
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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. 9Yv:6@.F  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 7"!b5(4=  
OBJ STANDARD       Infinity       Infinity                                  0              0 bOFzq>k_  
   1 STANDARD       Infinity            480                                220              0 &uK(. @  
STO STANDARD          -1500           -450               MIRROR           204             -1 <m]0!ii  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 IMH4GVr"  
   4 STANDARD       167.5149              6                N-BK7            56              0 (?7=,A7^  
   5 STANDARD       123.4956       4.762038                                 56              0 >.d/@3 '  
   6 STANDARD      -262.7873              4                N-BK7            56              0 t]$n~!  
   7 STANDARD      -173.5643       263.0681                                 56              0 Mw/9DrE7/  
   8 STANDARD       Infinity              0                           24.26983              0 oAQQ OtpZN  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. wQ+pVu?6_  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic # e?B  
 OBJ STANDARD       Infinity       Infinity                                  0              0 Nny*C`uDF  
   1 STANDARD       Infinity            600                                170              0 x%viCkq  
   2 STANDARD          -2000           -580               MIRROR           420             -1 {-4+=7Sg1  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 wL0[Slf}  
   4 STANDARD       559.8055              4                N-BK7           100              0 u7< +)6-  
   5 STANDARD       237.0107       6.225114                                100              0 A9xeOy8e  
   6 STANDARD      -1486.626              6                N-BK7           100              0 Tbi?AJa}  
   7 STANDARD      -319.3041       350.9258                                100              0 qp})4XTv  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 4Zbn8GpC  
 IMA STANDARD       Infinity                                          44.12228              0 7{m>W!  

波像差真小啊！