[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 {zWR)o .=  
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基本條件是 a}uYv:  
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主鏡必須是拋物面 o K>(yC[  
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副鏡必須是球面 *5 +GJWKN  
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系統包含一組校正鏡 0'Si ^>bW  
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口徑200mm以上 @zC6
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焦比不限制 f-G)pHm  
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視角0.5度以上 A*eVz]i,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. 'Y/0:)
 
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic #D4
 
OBJ STANDARD       Infinity       Infinity                                  0              0 QXZyiJX}  
   1 STANDARD       Infinity            480                                220              0 UWF \Vx*)b  
STO STANDARD          -1500           -450               MIRROR           204             -1 :oXSh;\  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 >;^/B R=  
   4 STANDARD       167.5149              6                N-BK7            56              0 8 ECX[fw  
   5 STANDARD       123.4956       4.762038                                 56              0 QJ3#~GYNr  
   6 STANDARD      -262.7873              4                N-BK7            56              0 54CJ6"q  
   7 STANDARD      -173.5643       263.0681                                 56              0 =w!ik9  
   8 STANDARD       Infinity              0                           24.26983              0 Xva(R<W7d<  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. 5@2Rl>B$  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic F9 r5 Z  
 OBJ STANDARD       Infinity       Infinity                                  0              0 p(n0(}eVC'  
   1 STANDARD       Infinity            600                                170              0 4Hz3KKu  
   2 STANDARD          -2000           -580               MIRROR           420             -1 #c:s2EL  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 \6|y~5Hw{r  
   4 STANDARD       559.8055              4                N-BK7           100              0 z}[u~P,  
   5 STANDARD       237.0107       6.225114                                100              0 #kv9$  
   6 STANDARD      -1486.626              6                N-BK7           100              0 8J3#(aBm  
   7 STANDARD      -319.3041       350.9258                                100              0 q-(~w!e  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 .b,\.0N  
 IMA STANDARD       Infinity                                          44.12228              0 2nyK'k  

波像差真小啊！