[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 ^Uik{x  
T{F 'Y%  
基本條件是 bHzH0v]:  
-8t&&fIA  
主鏡必須是拋物面 irGgo-x  
0j' Xi_uM  
副鏡必須是球面 gy5R"_MU  
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系統包含一組校正鏡 {iTA=\q2O  
l<s6Uu"  
口徑200mm以上 [*Vo`WgbD  
j3/K;U/SGJ  
焦比不限制 Qf}}/k|)k  
r+i=P_p  
視角0.5度以上 su~J:~q  
@ |(Tg  
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. ^4a|gc  
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4ZT0~37(  
qu/b:P  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic 2>kk6=<5'  
OBJ STANDARD       Infinity       Infinity                                  0              0 0?'v|5}  
   1 STANDARD       Infinity            480                                220              0 ;k,#o!>  
STO STANDARD          -1500           -450               MIRROR           204             -1 XILreATK@  
   3 STANDARD      -1313.861       279.4093               MIRROR      88.07552              0 K5\;'.9M  
   4 STANDARD       167.5149              6                N-BK7            56              0 7KV0g1GQ  
   5 STANDARD       123.4956       4.762038                                 56              0 7qhX`$  
   6 STANDARD      -262.7873              4                N-BK7            56              0 %9T|"\  
   7 STANDARD      -173.5643       263.0681                                 56              0 ?T8^tGD[  
   8 STANDARD       Infinity              0                           24.26983              0 ;0O>$|kg  
IMA STANDARD       Infinity                                          24.26983              0

經過不斷的努力,做了一些改進. tZ_D.syBAc  
7uxUqM  
LAU\.d  
Surf     Type         Radius      Thickness                Glass      Diameter          Conic ]5:0.$5  
 OBJ STANDARD       Infinity       Infinity                                  0              0 &4jc3_UKV  
   1 STANDARD       Infinity            600                                170              0 ;&ypvKG  
   2 STANDARD          -2000           -580               MIRROR           420             -1 jLF,R7t  
 STO STANDARD      -1884.757       397.7682               MIRROR      168.9907              0 [F}_Ime  
   4 STANDARD       559.8055              4                N-BK7           100              0 p[7?0 (  
   5 STANDARD       237.0107       6.225114                                100              0 {9<c*0l  
   6 STANDARD      -1486.626              6                N-BK7           100              0 +`'>  
   7 STANDARD      -319.3041       350.9258                                100              0 "|<U`3y6  
   8 STANDARD       Infinity     0.04561954                           44.12979              0 i 3i  
 IMA STANDARD       Infinity                                          44.12228              0 raB',Vp  

波像差真小啊！