[讨论]公差分析结果的疑问 [复制链接]

我现在在初学zemax的公差分析，找了一个双胶合透镜
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然后添加了默认公差分析，基本没变 <{t*yMr   
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然后运行分析的结果如下： >I9w|zFA  
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Analysis of Tolerances 4,nUCT  
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File : E:\光学设计资料\zemax练习\f500.ZMX 676r0`  
Title: RDX$Wy$@L  
Date : TUE JUN 21 2011 td}%reH  
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Units are Millimeters. ,Pq@{i#  
All changes are computed using linear differences. !>n^ ;u  

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Paraxial Focus compensation only. 5,i0QT"  
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WARNING: Solves should be removed prior to tolerancing. vpnOc2 -  
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Mnemonics: ~
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TFRN: Tolerance on curvature in fringes. <Mt>v2a3Y  
TTHI: Tolerance on thickness. K!L0|WH%!  
TSDX: Tolerance on surface decentering in x. | Ns-l (l  
TSDY: Tolerance on surface decentering in y. ,aA%,C.0U
 
TSTX: Tolerance on surface tilt in x (degrees). :1O49g3R  
TSTY: Tolerance on surface tilt in y (degrees). n7CwGN%  
TIRR: Tolerance on irregularity (fringes). ;,OZ8g)LH  
TIND: Tolerance on Nd index of refraction. =>y%Aj&4  
TEDX: Tolerance on element decentering in x. Te\i;7;4u  
TEDY: Tolerance on element decentering in y. kMCgfL  
TETX: Tolerance on element tilt in x (degrees). '}F=U(!  
TETY: Tolerance on element tilt in y (degrees). `oPUf!  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. +\Zr\fOe|%  
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WARNING: Boundary constraints on compensators will be ignored. UWf@(8  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm E1"H(m&6  
Mode                : Sensitivities t'7A-K=k3  
Sampling            : 2 F\)?Ntj)>@  
Nominal Criterion   : 0.54403234 $G,#nh2 oD  
Test Wavelength     : 0.6328 9i8 ~  
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cBGR%w\t%  
Fields: XY Symmetric Angle in degrees 0q!
  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY aRc2#:~;  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 o 9?#;B$  
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Sensitivity Analysis: 40M/Gu:  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| 5N5Deb#V  
Type                      Value      Criterion        Change          Value      Criterion        Change IXz)xdP  
Fringe tolerance on surface 1 ah8xiABa  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 [VL+
X^  
Change in Focus                :      -0.000000                            0.000000 u/,ng&!  
Fringe tolerance on surface 2 ^! r<-J  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 2Nau]y]=  
Change in Focus                :       0.000000                            0.000000 ;d#`wSF`G  
Fringe tolerance on surface 3 ]ssX,1#Xh  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 9_/dj"5
 
Change in Focus                :      -0.000000                            0.000000 S0zk<S  
Thickness tolerance on surface 1 kX1#+X  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ~4}'R_  
Change in Focus                :       0.000000                            0.000000 C8oAl3d+h  
Thickness tolerance on surface 2 8s@k0T<O  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 2Jl
$/W 3  
Change in Focus                :       0.000000                           -0.000000 #]MV  
Decenter X tolerance on surfaces 1 through 3 /W @k:  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 )LRso>iOO  
Change in Focus                :       0.000000                            0.000000 s2N~p^  
Decenter Y tolerance on surfaces 1 through 3 UbDRE[^P  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 IMF9eS{
L  
Change in Focus                :       0.000000                            0.000000 ;bh[TmQTJ  
Tilt X tolerance on surfaces 1 through 3 (degrees) 9NPOdt:@  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 m0$~O5|4  
Change in Focus                :       0.000000                            0.000000 (vXes.|+t  
Tilt Y tolerance on surfaces 1 through 3 (degrees) 0;6^fiSY;  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ,|Xib
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Change in Focus                :       0.000000                            0.000000 B}|(/a@*  
Decenter X tolerance on surface 1  0+P[
0  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ?_<14%r;  
Change in Focus                :       0.000000                            0.000000 rO;Vr},3\%  
Decenter Y tolerance on surface 1 :}[RDF?  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 5m(V(@a3  
Change in Focus                :       0.000000                            0.000000 Q9C;_Up  
Tilt X tolerance on surface (degrees) 1 rT}k[  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Ac,Qj`'V  
Change in Focus                :       0.000000                            0.000000 9-6E(D-ux  
Tilt Y tolerance on surface (degrees) 1 ;H%T5$:trP  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 JPt0k  
Change in Focus                :       0.000000                            0.000000 dK^WZQ  
Decenter X tolerance on surface 2 $SAk|  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 So^;5tG  
Change in Focus                :       0.000000                            0.000000 A@H
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Decenter Y tolerance on surface 2 y G{;kJ P  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 /E|Ac&Qk  
Change in Focus                :       0.000000                            0.000000 <lxE^M  
Tilt X tolerance on surface (degrees) 2 ~,: FZ1wh  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 x*}*0).  
Change in Focus                :       0.000000                            0.000000 _+?v'#  
Tilt Y tolerance on surface (degrees) 2 3ug-cq  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 CKau\N7T  
Change in Focus                :       0.000000                            0.000000 v_s(  
Decenter X tolerance on surface 3 Hb:@]!r>  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `dpm{sn  
Change in Focus                :       0.000000                            0.000000 MPxe|
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Decenter Y tolerance on surface 3 N%K%0o-  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 \A'tV/YAd  
Change in Focus                :       0.000000                            0.000000 wFHbz9|@I  
Tilt X tolerance on surface (degrees) 3 z:
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TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 JF%_8Ye5  
Change in Focus                :       0.000000                            0.000000 x+V@f~2F  
Tilt Y tolerance on surface (degrees) 3 G&?,L:^t  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 fSL'+l3  
Change in Focus                :       0.000000                            0.000000 Vr1yj  
Irregularity of surface 1 in fringes m0(]%Kdw  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 _,C>+dv)  
Change in Focus                :       0.000000                            0.000000 d4]9oi{}  
Irregularity of surface 2 in fringes 74u_YA<"  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 QT\=>,Fz _  
Change in Focus                :       0.000000                            0.000000 cI
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Irregularity of surface 3 in fringes o7A+O%dX  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 '9R.$,N  
Change in Focus                :       0.000000                            0.000000 k9|8@3(h  
Index tolerance on surface 1 K:3u/C`  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 K>a+-QWK3  
Change in Focus                :       0.000000                            0.000000 ;I5u"MDHGI  
Index tolerance on surface 2 ]g0h7q)79  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Munal=wL  
Change in Focus                :       0.000000                           -0.000000 i;GF/pi  
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Worst offenders: 8qi6>}A  
Type                      Value      Criterion        Change m+ww  
TSTY   2            -0.20000000     0.35349910    -0.19053324 nR2pqaKc  
TSTY   2             0.20000000     0.35349910    -0.19053324 dhAkD-Lh  
TSTX   2            -0.20000000     0.35349910    -0.19053324 l)^sE)  
TSTX   2             0.20000000     0.35349910    -0.19053324 9BA*e-[  
TSTY   1            -0.20000000     0.42678383    -0.11724851 1m5=N
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TSTY   1             0.20000000     0.42678383    -0.11724851 6|O2i j-J  
TSTX   1            -0.20000000     0.42678383    -0.11724851 4*vV9*'!  
TSTX   1             0.20000000     0.42678383    -0.11724851 Y>l92=G  
TSTY   3            -0.20000000     0.42861670    -0.11541563 )8rN  
TSTY   3             0.20000000     0.42861670    -0.11541563 TcP (?v  
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Estimated Performance Changes based upon Root-Sum-Square method:
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Nominal MTF                 :     0.54403234 5,,b>Z<  
Estimated change            :    -0.36299231 fZH";_"1  
Estimated MTF               :     0.18104003 M&/([>Q  
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Compensator Statistics: 6hvmp  
Change in back focus:
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Minimum            :        -0.000000 j18qY4Gw)  
Maximum            :         0.000000 !jIpgs5  
Mean               :        -0.000000 `]0E)  
Standard Deviation :         0.000000 REe<k<>p~  
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Monte Carlo Analysis: Jn/"(mM  
Number of trials: 20 uoIvFcb^  
x^J}]5{0  
Initial Statistics: Normal Distribution -S7y1 )7  
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  Trial       Criterion        Change dg?[gD8!4&  
      1     0.42804416    -0.11598818 n.
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Change in Focus                :      -0.400171 IQ`#M~:  
      2     0.54384387    -0.00018847 a+--2+~=  
Change in Focus                :       1.018470 j%V95M%$  
      3     0.44510003    -0.09893230 mqx#N%  
Change in Focus                :      -0.601922 wj'5D0  
      4     0.18154684    -0.36248550 {);S6F$[3  
Change in Focus                :       0.920681 YjT7_|`(]  
      5     0.28665820    -0.25737414 >\x   
Change in Focus                :       1.253875 xD#r5  
      6     0.21263372    -0.33139862 "/O`#Do/  
Change in Focus                :      -0.903878 \"X<\3z2  
      7     0.40051424    -0.14351809 '|9fDzW"]  
Change in Focus                :      -1.354815 ,xJ1\_GI`  
      8     0.48754161    -0.05649072 ^zv,VD  
Change in Focus                :       0.215922 OjUZ-_J  
      9     0.40357468    -0.14045766 u$"dL=s!  
Change in Focus                :       0.281783 has \W\(  
     10     0.26315315    -0.28087919 CXZO  
Change in Focus                :      -1.048393 5c W2  
     11     0.26120585    -0.28282649 
G/w&yd4  
Change in Focus                :       1.017611 vuOixAkw  
     12     0.24033815    -0.30369419 FBR]) h'Z  
Change in Focus                :      -0.109292 p7\}X.L  
     13     0.37164046    -0.17239188 mo$`a6[h<  
Change in Focus                :      -0.692430 \}:&Hl+  
     14     0.48597489    -0.05805744 4}4K6y<q  
Change in Focus                :      -0.662040 ?0{8fGM4  
     15     0.21462327    -0.32940907 xw)$).yc  
Change in Focus                :       1.611296 5$(qnOi  
     16     0.43378226    -0.11025008 C_&-2Z  
Change in Focus                :      -0.640081 >sUavvJ~x  
     17     0.39321881    -0.15081353 #-0}r  
Change in Focus                :       0.914906 G
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     18     0.20692530    -0.33710703 S:*.,zC  
Change in Focus                :       0.801607 A`NkgVq5:  
     19     0.51374068    -0.03029165 e
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Change in Focus                :       0.947293 >AbgJ*X.  
     20     0.38013374    -0.16389860 &<s[(w!%%  
Change in Focus                :       0.667010 F@76V$U.  
h=fzX.dt  
Number of traceable Monte Carlo files generated: 20 %`kO\q_  
KKPQ[3g  
Nominal     0.54403234  2]$ 7  
Best        0.54384387    Trial     2 q13bV  
Worst       0.18154684    Trial     4 x9,X0JO  
Mean        0.35770970 $rb #k{  
Std Dev     0.11156454 jO|D#nC  
0#gu7n|J  
oi@/H\7j  
Compensator Statistics: <3[,bTIk  
Change in back focus: Wsz-#kc\[  
Minimum            :        -1.354815 X0h`g)Bbf  
Maximum            :         1.611296 K>"]*#aBv  
Mean               :         0.161872 OwdA6it^f  
Standard Deviation :         0.869664 l(o#N'!j4  
u~WE}VC  
90% >       0.20977951               G,VTFM6  
80% >       0.22748071               Qx B0I/ {  
50% >       0.38667627               ku@sQn  
20% >       0.46553746               j~|pSu.<  
10% >       0.50064115                N^)\+*tf1  
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End of Run. w?r  
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这就有了些疑问，为什么我选择的补偿器是近轴焦点，而分析结果近轴焦点都不变化？？应该是变得。另外最后的蒙特卡洛分析，只有10%的大于0.5（我用的是MTF作为评价方式），可是我设计的MTF如图 lWVvAoe  
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是大于0.6左右的，难道我按照这个默认的公差来加工的话，只有10%的才可能大于0.5？那太低了啊，请问这该怎么进行进一步处理。或者之前哪有问题 (1tb  
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不吝赐教

我又试了试，原来是得根据上面的结果不断修改公差，放松或者变紧，然后在做公差分析，不断提高蒙特卡罗的结果。但是比如就拿我这个来说，理想是达到30lp处>0.6，那么实际做蒙特卡罗公差分析时，百分之多少以上的MTF是合格的呢？

90% >       0.20977951                
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80% >       0.22748071                 ^lt;K{  
50% >       0.38667627                 +d$l1j  
20% >       0.46553746                 9XH}/FcP_O  
10% >       0.50064115 rJ@yOed["b  
W=[..d  
最后这个数值是MTF值呢，还是MTF的公差？ @TvoCDeI  
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也就是说，这到底是有90%的产品MTF大于0.20977951还是90%的产品的MTF变化量大于0.20977951？？？   U{)|z-n  
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怎么没人啊，大家讨论讨论吗

没有人啊？？？

引用第2楼sansummer于2011-06-22 08:56发表的  : n*HRGJ  
90% >       0.20977951                 ?9?eA^X%  
80% >       0.22748071                 HoFFce7o  
50% >       0.38667627                 C8J3^?7E  
20% >       0.46553746                 W8/8V,  
10% >       0.50064115 dp&bcR&#)  
....... b')Lj]%;k  

h /.^iT  
p{sbf;-x}  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   `D#3  
Mode                : Sensitivities K)h\X~s  
Sampling            : 2 :*{>=BD  
Nominal Criterion   : 0.54403234 #kuk3}&  
Test Wavelength     : 0.6328 0%m}tfQ5  
c04"d"$ x  
波长632.8nm 时 mtf 是 0.54403234  没达到0.6

谢谢。您说的“波长632.8nm 时 mtf 是 0.54403234  没达到0.6”这是一个评价标准吧？ CD]2a@j{  
ic"n*SZa  
这个评价标准和我理想的设计结果的0.6有什么联系吗，另外这个 0.54403234  是这么来的？

你试试把原来的系统波长改成632.8nm，看看Geometric MTF    30 per mm 的mtf值是不是0.54403234

啊...这倒也是。换了波长的确可能有所变化。另外还有就是如果现在百分比太低，我是否应该考虑把最敏感的公差再紧一些，就会好了？

恩，多多尝试