[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 =R\]=cRbg  
\`"ht  
基本條件是 -{A<.a3P}=  
-$@h1Y
 
主鏡必須是拋物面 L0]_X#s>#  
L%5%T;0'~  
副鏡必須是球面 p4)Q&k!  
-']56o_sQ/  
系統包含一組校正鏡 |K~Nw&rZ]  
S[QrS7  
口徑200mm以上 jFb?b6b  
DL.!G  
焦比不限制 ~{gqsuCCL  
L=h'Qgk%  
視角0.5度以上 4.(4x&  
=Runf +}  
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. U;I9 bK8  
0(btA~'*  
]R? 4{t4  
9ll~~zF99|  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic 8r!zBKq2~  
OBJ STANDARD       Infinity       Infinity                                  0              0 "h ^Z  
   1 STANDARD       Infinity            480                                220              0 A70d\i  
STO STANDARD          -1500           -450               MIRROR           204             -1 Qci]i)s$js  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 b>$S<td  
   4 STANDARD       167.5149              6                N-BK7            56              0 ?hM64jI|  
   5 STANDARD       123.4956       4.762038                                 56              0 >i O!*&Y>  
   6 STANDARD      -262.7873              4                N-BK7            56              0 O1kl70,`R  
   7 STANDARD      -173.5643       263.0681                                 56              0 \
di=  
   8 STANDARD       Infinity              0                           24.26983              0 &~w}_Fjk  
IMA STANDARD       Infinity                                          24.26983              0

波像差真小啊！

經過不斷的努力,做了一些改進. %1$,Vs<RH  
Oo%d]8W  
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Surf     Type         Radius      Thickness                Glass      Diameter          Conic 2('HvH]k  
 OBJ STANDARD       Infinity       Infinity                                  0              0 qm o9G  
   1 STANDARD       Infinity            600                                170              0 ~`:L?Jkb6H  
   2 STANDARD          -2000           -580               MIRROR           420             -1 NPe%F+X  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 `^Em&6!!  
   4 STANDARD       559.8055              4                N-BK7           100              0 l2P=R)@{  
   5 STANDARD       237.0107       6.225114                                100              0  YVanW  
   6 STANDARD      -1486.626              6                N-BK7           100              0 H}bJ"(9$vC  
   7 STANDARD      -319.3041       350.9258                                100              0 1HZO9cXJ  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 =zKM=qba  
 IMA STANDARD       Infinity                                          44.12228              0 <<R*2b