[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 (L q^C=  
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然后添加了默认公差分析，基本没变 #_|6yo}  
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然后运行分析的结果如下： "Q-TLN5(  
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Analysis of Tolerances &*A7{76x  
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File : E:\光学设计资料\zemax练习\f500.ZMX K+2<{qwh  
Title: 4ZSc'9e9  
Date : TUE JUN 21 2011 %?@N-$j  
:$L^l{gT  
Units are Millimeters. Me_.X_  
All changes are computed using linear differences. #2^eGhwnI  
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Paraxial Focus compensation only. j.=VZ  
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WARNING: Solves should be removed prior to tolerancing. o/t^rY y
 
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Mnemonics: I($0&Y\De  
TFRN: Tolerance on curvature in fringes. 5%Hw,h   
TTHI: Tolerance on thickness. KP,#x$Bg  
TSDX: Tolerance on surface decentering in x. R6eKI,y\"  
TSDY: Tolerance on surface decentering in y. % 8u97f W  
TSTX: Tolerance on surface tilt in x (degrees). QMwrt  
TSTY: Tolerance on surface tilt in y (degrees). pL2P .  
TIRR: Tolerance on irregularity (fringes). Kg?(Ax4  
TIND: Tolerance on Nd index of refraction. a=@]Ov/  
TEDX: Tolerance on element decentering in x. @$mh0K>  
TEDY: Tolerance on element decentering in y. wo>7^ZA  
TETX: Tolerance on element tilt in x (degrees). /;E{(%U)t  
TETY: Tolerance on element tilt in y (degrees). .=G?Zd  
l5P!9P  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. y Ny,$1  
aNUU' [  
WARNING: Boundary constraints on compensators will be ignored. U-+o6XX  
*3@ =XY7  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 1#tFO  
Mode                : Sensitivities tW-wO[2  
Sampling            : 2 yjE$o?A  
Nominal Criterion   : 0.54403234 p`qy57  
Test Wavelength     : 0.6328 KwAc Ga}J  
yRAfIB$T}"  
.D3k(zZ  
Fields: XY Symmetric Angle in degrees _9f7@@b  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY @6"+x  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 X*w7q7\8-:  
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Sensitivity Analysis: l6T^e@*  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| ]xxE_B7  
Type                      Value      Criterion        Change          Value      Criterion        Change ##6u  
Fringe tolerance on surface 1 {%Rntb  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 @rP#ktz]  
Change in Focus                :      -0.000000                            0.000000 #EA` 
|  
Fringe tolerance on surface 2 Hkrhd   
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 Hb3..o:  
Change in Focus                :       0.000000                            0.000000 b5)1\ANq  
Fringe tolerance on surface 3 B7.<A#y2  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ThY\K>@]  
Change in Focus                :      -0.000000                            0.000000 eRm*+l|?  
Thickness tolerance on surface 1 kq*IC
&y  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Mw`S.M. B  
Change in Focus                :       0.000000                            0.000000 9^CuSj  
Thickness tolerance on surface 2 *+%$OH,  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 DfjDw/{U3L  
Change in Focus                :       0.000000                           -0.000000 Ip0`R+8  
Decenter X tolerance on surfaces 1 through 3 1()pKBHf  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 FwV5{-(  
Change in Focus                :       0.000000                            0.000000 J ql$ g  
Decenter Y tolerance on surfaces 1 through 3 `j4OKZ  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 N97WI+`  
Change in Focus                :       0.000000                            0.000000 .7HEI;4  
Tilt X tolerance on surfaces 1 through 3 (degrees) je74As[  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "`V:4uz  
Change in Focus                :       0.000000                            0.000000 %~\I*v0
4  
Tilt Y tolerance on surfaces 1 through 3 (degrees) CN6b982&  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 $'w>doUlA  
Change in Focus                :       0.000000                            0.000000 2UMX%+ "J  
Decenter X tolerance on surface 1 g6H`uO  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 BO>[\!=y  
Change in Focus                :       0.000000                            0.000000 ^@$T>SB1  
Decenter Y tolerance on surface 1 }0F
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TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 0BN=>]V~j7  
Change in Focus                :       0.000000                            0.000000 ,[
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Tilt X tolerance on surface (degrees) 1 ]eI|_O^u  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 [ak[ZXC,  
Change in Focus                :       0.000000                            0.000000 5r^u7k  
Tilt Y tolerance on surface (degrees) 1 \O\veB8  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851  ?d
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Change in Focus                :       0.000000                            0.000000 %`j2?rn  
Decenter X tolerance on surface 2 Y~ Nt9L  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 `3vt.b  
Change in Focus                :       0.000000                            0.000000 gP=@u.  
Decenter Y tolerance on surface 2 ^%x7:  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ys9MV%*  
Change in Focus                :       0.000000                            0.000000 ANd#m9(x  
Tilt X tolerance on surface (degrees) 2 CQ#%v%  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 EYU3Pl%  
Change in Focus                :       0.000000                            0.000000 R1\$}ep^  
Tilt Y tolerance on surface (degrees) 2 "3VMjF\  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 u/4|Akui  
Change in Focus                :       0.000000                            0.000000 %I;iP|/  
Decenter X tolerance on surface 3 \"mLLnK?  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~f]I0FK  
Change in Focus                :       0.000000                            0.000000 -_~T;cj6  
Decenter Y tolerance on surface 3 b+mh9q'5E  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 hG.~[#[&6  
Change in Focus                :       0.000000                            0.000000 xZ(VvINL'  
Tilt X tolerance on surface (degrees) 3 L51uC ,QF  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 UZqk2D  
Change in Focus                :       0.000000                            0.000000 s~Od(,K  
Tilt Y tolerance on surface (degrees) 3 4)~GHb  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 *27*&&=)H  
Change in Focus                :       0.000000                            0.000000 z'ZGN{L  
Irregularity of surface 1 in fringes 0YVkq?1x9  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 fF} NPl  
Change in Focus                :       0.000000                            0.000000 vd'd@T  
Irregularity of surface 2 in fringes M/mUY  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 b_T?jCyW  
Change in Focus                :       0.000000                            0.000000 BKQI|i  
Irregularity of surface 3 in fringes 
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TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 jPf*qe>U  
Change in Focus                :       0.000000                            0.000000 s8]9OG3g  
Index tolerance on surface 1 s`:-6{E  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ^#VyIF3q  
Change in Focus                :       0.000000                            0.000000 vQpR0IEf]e  
Index tolerance on surface 2 *n=NBkq%/!  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 #c ndq[H  
Change in Focus                :       0.000000                           -0.000000 dM1)wkbET  
YdK]%%  
Worst offenders: $MEKt}S  
Type                      Value      Criterion        Change 007SA6xq  
TSTY   2            -0.20000000     0.35349910    -0.19053324 \e/'d~F  
TSTY   2             0.20000000     0.35349910    -0.19053324 + fQ=G/  
TSTX   2            -0.20000000     0.35349910    -0.19053324 b1}P3W  
TSTX   2             0.20000000     0.35349910    -0.19053324 pA*cF!tq7  
TSTY   1            -0.20000000     0.42678383    -0.11724851 DM*mOT  
TSTY   1             0.20000000     0.42678383    -0.11724851 Zq--m/  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ?[\(i)]  
TSTX   1             0.20000000     0.42678383    -0.11724851 0.
+"K}  
TSTY   3            -0.20000000     0.42861670    -0.11541563 MEQ:[;1  
TSTY   3             0.20000000     0.42861670    -0.11541563 PEPBnBA&1  
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Estimated Performance Changes based upon Root-Sum-Square method: 7mSVL\\^  
Nominal MTF                 :     0.54403234 VN[h0+n4Th  
Estimated change            :    -0.36299231 dFF[2  
Estimated MTF               :     0.18104003 P+sxlf:0  
8Hf!@p6R+  
Compensator Statistics: v?)-KtX|  
Change in back focus: A-O@e e  
Minimum            :        -0.000000 )DsC:cP  
Maximum            :         0.000000 CUT D]:\  
Mean               :        -0.000000 e g#.f`  
Standard Deviation :         0.000000 (xJ6: u  
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Monte Carlo Analysis: ?k~(E`ZE3  
Number of trials: 20 @X_x?N  

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Initial Statistics: Normal Distribution Y&aFAjj  
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  Trial       Criterion        Change .Y!*6I  
      1     0.42804416    -0.11598818 a3 <D1"  
Change in Focus                :      -0.400171 sT
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      2     0.54384387    -0.00018847 716JnG>  
Change in Focus                :       1.018470 p5c^dC{  
      3     0.44510003    -0.09893230 l [?o du4  
Change in Focus                :      -0.601922 [Z|R-{"  
      4     0.18154684    -0.36248550 ^!-*xH.dK  
Change in Focus                :       0.920681 jEsP: H(0^  
      5     0.28665820    -0.25737414 yHl1:cf(y  
Change in Focus                :       1.253875 @ 9D, f  
      6     0.21263372    -0.33139862 Y"~I(,nx!  
Change in Focus                :      -0.903878 40N8?kQ}?  
      7     0.40051424    -0.14351809 W[[3'JTF  
Change in Focus                :      -1.354815 )f9f_^;  
      8     0.48754161    -0.05649072 [s$vY~_  
Change in Focus                :       0.215922 +M!f}=H  
      9     0.40357468    -0.14045766 7udMF3;>  
Change in Focus                :       0.281783 .t''(0_kC  
     10     0.26315315    -0.28087919 >4`("#  
Change in Focus                :      -1.048393 Mib(J+Il  
     11     0.26120585    -0.28282649 #N_C|v/  
Change in Focus                :       1.017611 $5ZBNGr  
     12     0.24033815    -0.30369419 xtYX}u  
Change in Focus                :      -0.109292 ^%V'l-}/  
     13     0.37164046    -0.17239188 I~?D^   
Change in Focus                :      -0.692430 w~hO)1c],:  
     14     0.48597489    -0.05805744 `z%f@/:fG  
Change in Focus                :      -0.662040 wUj[c7Y%  
     15     0.21462327    -0.32940907 QNn\wz_)  
Change in Focus                :       1.611296 =mxG[zDtQ  
     16     0.43378226    -0.11025008 UXwnE@`F  
Change in Focus                :      -0.640081 nI.K|hU:P  
     17     0.39321881    -0.15081353 /]m5HW(P7K  
Change in Focus                :       0.914906 :["iBrFp  
     18     0.20692530    -0.33710703 ]W39HL  
Change in Focus                :       0.801607 fTd=}zY  
     19     0.51374068    -0.03029165 Wsya:9|  
Change in Focus                :       0.947293 n4,b?-E>(  
     20     0.38013374    -0.16389860 &SuWmtq  
Change in Focus                :       0.667010
=n.d'  
b>SG5EqU@  
Number of traceable Monte Carlo files generated: 20 OP0KK^#  
Z6C!-a  
Nominal     0.54403234
t4(Z@X$  
Best        0.54384387    Trial     2 8AL`<8$  
Worst       0.18154684    Trial     4 Ahl-EVIr<  
Mean        0.35770970 _wMxKM  
Std Dev     0.11156454 ZLm?8g6-  
FyleK+D?  
d
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Compensator Statistics: @p`*MWU  
Change in back focus: 5B6twn~[  
Minimum            :        -1.354815 LF6PKS  
Maximum            :         1.611296 y2Eq-Ie  
Mean               :         0.161872 ,', S  
Standard Deviation :         0.869664 C7PVJnY0  
Ub[SUeBGH  
90% >       0.20977951               Yf1&"WW4  
80% >       0.22748071               |w; hu]  
50% >       0.38667627               Qc4r?7S<  
20% >       0.46553746              
DA=#T2)p  
10% >       0.50064115                f6/<lSoW  
8M6 Xd]{%  
End of Run. Kd='l~rby  
I:|<};mm  
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 5:R$xgc  
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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 p]jkfsCjN  
5& 2([  
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                 2EH0d6nt  
80% >       0.22748071                 :+_  
50% >       0.38667627                 2b/Cs#-  
20% >       0.46553746                 {O6yJckH  
10% >       0.50064115 x#XxD<y  
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最后这个数值是MTF值呢，还是MTF的公差？ c2u*<x  
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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？？？   5]*!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  : q3#+G:nh  
90% >       0.20977951                 H9PnJr8 \  
80% >       0.22748071                 ,Si{]y  
50% >       0.38667627                 l^OflZC~  
20% >       0.46553746                 ji ./m8(  
10% >       0.50064115 cs?WE9N  
....... uo J0wG.  

K!.t}s.t  
d6ef)mw  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   A8{ xZsH  
Mode                : Sensitivities kj[boxN  
Sampling            : 2 b<~-s sL7a  
Nominal Criterion   : 0.54403234 h!K" ;qw  
Test Wavelength     : 0.6328
 <{Y3}Q  
Vjv6d&Q  
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？ x0JW  
#<b\BqYG  
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