[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 5(&xNT-n8  
jw6Tj;c  
基本條件是 y|_Eu:  

*@ED}Mj+  
主鏡必須是拋物面 U\+&cob.  
6gOe!mm  
副鏡必須是球面 oN(-rWdhZ  
ED} 31L  
系統包含一組校正鏡 u~Tg&0V30  
[;O^[Iybf:  
口徑200mm以上 ZEbL
L4n  
`0#H]=$2h  
焦比不限制 Ul Mi.;/^  
3}&ZOO 
 
視角0.5度以上 &~5=K  
>CgO<\  
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. >{Rb 3Z]  
+
yt6(7V*  
wX1ig  
'4;6u]d)2  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic
Gk~l,wV>  
OBJ STANDARD       Infinity       Infinity                                  0              0 Tvf~P w  
   1 STANDARD       Infinity            480                                220              0 ;)!"Ty|  
STO STANDARD          -1500           -450               MIRROR           204             -1 \Mi#{0f+q  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 Zzd/K^gg  
   4 STANDARD       167.5149              6                N-BK7            56              0 aw}+'(?8]  
   5 STANDARD       123.4956       4.762038                                 56              0 kRIB<@{  
   6 STANDARD      -262.7873              4                N-BK7            56              0 %6 =\5>  
   7 STANDARD      -173.5643       263.0681                                 56              0 F}ukZ DB  
   8 STANDARD       Infinity              0                           24.26983              0 B!aK  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. Kx]> fHK  
W]LQ &f  
vo b$iS`>=  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic utd:&q|}  
 OBJ STANDARD       Infinity       Infinity                                  0              0 mmN|F
$;r  
   1 STANDARD       Infinity            600                                170              0 tP]q4i
 
   2 STANDARD          -2000           -580               MIRROR           420             -1 =K6c;  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 -931'W[s,  
   4 STANDARD       559.8055              4                N-BK7           100              0 ;F,qS0lzE  
   5 STANDARD       237.0107       6.225114                                100              0 ?Y!^I2Y6  
   6 STANDARD      -1486.626              6                N-BK7           100              0 9qeZb%r&  
   7 STANDARD      -319.3041       350.9258                                100              0 W8.j/K:  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 6e:P.HqjA  
 IMA STANDARD       Infinity                                          44.12228              0 &l!$Sw-u;  

波像差真小啊！