[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 G OH  
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然后添加了默认公差分析，基本没变 Ng?apaIi@~  
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然后运行分析的结果如下： bl$+8!~  
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Analysis of Tolerances )3BR[*u
*  
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File : E:\光学设计资料\zemax练习\f500.ZMX q-A`/9  
Title: -08&&H  
Date : TUE JUN 21 2011 0m]~J_  
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Units are Millimeters. 8f /T!5  
All changes are computed using linear differences. $o/0A
 
s"pR+)jf1D  
Paraxial Focus compensation only. i_[^s:*T  
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WARNING: Solves should be removed prior to tolerancing. aQ32p4C  
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Mnemonics: b`(yu.{Jn  
TFRN: Tolerance on curvature in fringes. P%.`c?olbs  
TTHI: Tolerance on thickness. <QYCo1_  
TSDX: Tolerance on surface decentering in x. A2}Z *U(;  
TSDY: Tolerance on surface decentering in y. #H'sZv  
TSTX: Tolerance on surface tilt in x (degrees). = 4
BLc  
TSTY: Tolerance on surface tilt in y (degrees). t-.2+6"\  
TIRR: Tolerance on irregularity (fringes).  R4&|t  
TIND: Tolerance on Nd index of refraction. Qw3a"k-  
TEDX: Tolerance on element decentering in x. ~AEqfIx*^&  
TEDY: Tolerance on element decentering in y. WF+bN#YJ  
TETX: Tolerance on element tilt in x (degrees). 3I'M6WA  
TETY: Tolerance on element tilt in y (degrees). ,maAw}=  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. /Ki0+(4  
B, QC-Tn  
WARNING: Boundary constraints on compensators will be ignored. yq/[/*7^  
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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm `f\5p+!<7R  
Mode                : Sensitivities C ffTv  
Sampling            : 2 2(+RIu0d  
Nominal Criterion   : 0.54403234 g`%ED0aR  
Test Wavelength     : 0.6328 n/KI"qa]9  
g_rA_~dh  
\SYPu,ZT  
Fields: XY Symmetric Angle in degrees Q\&AlV  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY fK)ZJ_?w,@  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ?)A]q' O  
:J=+;I(UI  
Sensitivity Analysis: &LCUoTzj  

4 +da  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| DBj;P|L_  
Type                      Value      Criterion        Change          Value      Criterion        Change DiZ!c"$  
Fringe tolerance on surface 1 |%M{kA-  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374
J]n7| L  
Change in Focus                :      -0.000000                            0.000000 [JX}1%NA  
Fringe tolerance on surface 2 yDCooX0  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 'DL;c@}37  
Change in Focus                :       0.000000                            0.000000 q3,P|&T  
Fringe tolerance on surface 3 Y(#d8o}}#  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 ?`vM#)  
Change in Focus                :      -0.000000                            0.000000 Q9Y9{T  
Thickness tolerance on surface 1 `@u+u0  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 9 NGeh*`  
Change in Focus                :       0.000000                            0.000000 FT|/WZR  
Thickness tolerance on surface 2 |1_
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TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 s8f3i\1  
Change in Focus                :       0.000000                           -0.000000 [I+)Ak5  
Decenter X tolerance on surfaces 1 through 3 !Zk%P  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 dVj'  
Change in Focus                :       0.000000                            0.000000 3/A[LL|  
Decenter Y tolerance on surfaces 1 through 3 \,@Yl.,+  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Ovl?j&8  
Change in Focus                :       0.000000                            0.000000 }\PE {  
Tilt X tolerance on surfaces 1 through 3 (degrees) C$AIP\j- )  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 a0V8L+v(  
Change in Focus                :       0.000000                            0.000000 v$.JmL0^J  
Tilt Y tolerance on surfaces 1 through 3 (degrees) c{]r{FAx9o  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 T>%
uRK$  
Change in Focus                :       0.000000                            0.000000 J^s<x#C  
Decenter X tolerance on surface 1 6KIjq[T^  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 M0;t%*1  
Change in Focus                :       0.000000                            0.000000 :o.x=c B  
Decenter Y tolerance on surface 1 HdY3DdC%q  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 QC\,  
Change in Focus                :       0.000000                            0.000000 "a0u-}/D  
Tilt X tolerance on surface (degrees) 1 YaY;o^11/  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 JEm?26n X  
Change in Focus                :       0.000000                            0.000000 lH,]ZA./  
Tilt Y tolerance on surface (degrees) 1 3G%XG{dg  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 $8X tI  
Change in Focus                :       0.000000                            0.000000 2d>d(^  
Decenter X tolerance on surface 2 JT.\f,z&  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 JucxhjV#,  
Change in Focus                :       0.000000                            0.000000 Q[ 9rA  
Decenter Y tolerance on surface 2 V\rIN}7  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 f>wW}-  
Change in Focus                :       0.000000                            0.000000 [)J49  
Tilt X tolerance on surface (degrees) 2 >DL-Q\U  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 jOm&yX  
Change in Focus                :       0.000000                            0.000000 ;)=zvr17  
Tilt Y tolerance on surface (degrees) 2 (4{@oM#H6  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 aoakTi!}  
Change in Focus                :       0.000000                            0.000000 08K.\3  
Decenter X tolerance on surface 3 FB=  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 -}N\REXE  
Change in Focus                :       0.000000                            0.000000 1EAVMJ  
Decenter Y tolerance on surface 3 GmmT'3Q  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 P/gb+V=g!  
Change in Focus                :       0.000000                            0.000000 p^zEfLTU  
Tilt X tolerance on surface (degrees) 3 :)J~FV
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TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 \@PUljU]  
Change in Focus                :       0.000000                            0.000000 Hs4zJk  
Tilt Y tolerance on surface (degrees) 3 \HP,LH[P:  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 pRxlvVt  
Change in Focus                :       0.000000                            0.000000 %:be{Y6  
Irregularity of surface 1 in fringes Kz3h]/A.  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 S]K6qY  
Change in Focus                :       0.000000                            0.000000 ;qVEI/  
Irregularity of surface 2 in fringes IYM@(c@ld0  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 |q!2i  
Change in Focus                :       0.000000                            0.000000 h@>rjeY@  
Irregularity of surface 3 in fringes s=y9!rr  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840
)ejXeg  
Change in Focus                :       0.000000                            0.000000 ;5oH6{7_Z  
Index tolerance on surface 1 i:Z.;z$1  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 rD(ep~^M  
Change in Focus                :       0.000000                            0.000000 Ng;b!S  
Index tolerance on surface 2 O'& \-j 1  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 I|3v&E1  
Change in Focus                :       0.000000                           -0.000000 _9O }d  
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Worst offenders: kDpZnXP  
Type                      Value      Criterion        Change AFm*60C  
TSTY   2            -0.20000000     0.35349910    -0.19053324 *(SBl}f4l  
TSTY   2             0.20000000     0.35349910    -0.19053324 .IAHy)li"  
TSTX   2            -0.20000000     0.35349910    -0.19053324
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TSTX   2             0.20000000     0.35349910    -0.19053324 fN*4(yw  
TSTY   1            -0.20000000     0.42678383    -0.11724851 |z7Crz  
TSTY   1             0.20000000     0.42678383    -0.11724851 n%ArA])_&  
TSTX   1            -0.20000000     0.42678383    -0.11724851 r+#V{oE_  
TSTX   1             0.20000000     0.42678383    -0.11724851 piiQ  
TSTY   3            -0.20000000     0.42861670    -0.11541563 X8l1xD  
TSTY   3             0.20000000     0.42861670    -0.11541563 5$"[gdt)T  
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Estimated Performance Changes based upon Root-Sum-Square method: Mn\B\  
Nominal MTF                 :     0.54403234 g-V\s&}  
Estimated change            :    -0.36299231 x]J-q5  
Estimated MTF               :     0.18104003 ohtn^o;C}  
1yRd10  
Compensator Statistics: U/&qV"Ih  
Change in back focus: eP'kY(g8   
Minimum            :        -0.000000 B
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Maximum            :         0.000000 .HyiPx3^  
Mean               :        -0.000000 $Q$d\Yvi  
Standard Deviation :         0.000000 U#1yl6e\I  
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Monte Carlo Analysis: 0?L$)T-B  
Number of trials: 20 Tx?@*Q  
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Initial Statistics: Normal Distribution [MXXY  

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  Trial       Criterion        Change !zJ67-G  
      1     0.42804416    -0.11598818 xY'YbHFz  
Change in Focus                :      -0.400171  iIEIGQx  
      2     0.54384387    -0.00018847 Joo)GIB  
Change in Focus                :       1.018470 W6/p
-e5y  
      3     0.44510003    -0.09893230 "u]Fl+c  
Change in Focus                :      -0.601922 Uus)2R7  
      4     0.18154684    -0.36248550 awW\$Q  
Change in Focus                :       0.920681 +4p;4/=  
      5     0.28665820    -0.25737414 J&Qy$itqg  
Change in Focus                :       1.253875 d\Z4?@T<5  
      6     0.21263372    -0.33139862 3@ukkO)   
Change in Focus                :      -0.903878 ;Wh[q*A  
      7     0.40051424    -0.14351809 :8L61
d2(  
Change in Focus                :      -1.354815 NGQIoKC  
      8     0.48754161    -0.05649072 +
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Change in Focus                :       0.215922 m)RxV@  
      9     0.40357468    -0.14045766 tJ_@AcF  
Change in Focus                :       0.281783 Oc+L^}elJ  
     10     0.26315315    -0.28087919 ,F9wc
<V8  
Change in Focus                :      -1.048393 W2(=m!:U  
     11     0.26120585    -0.28282649 ~HI0<;r=eL  
Change in Focus                :       1.017611 ZU@jtqq  
     12     0.24033815    -0.30369419 AX Jj"hN  
Change in Focus                :      -0.109292 (9_e>2_  
     13     0.37164046    -0.17239188 %LlKi5u]  
Change in Focus                :      -0.692430 (qONeLf%  
     14     0.48597489    -0.05805744 (y4Eq*n%!  
Change in Focus                :      -0.662040 4i&!V9@:  
     15     0.21462327    -0.32940907 CMjPp`rA  
Change in Focus                :       1.611296 ^O:RS g9  
     16     0.43378226    -0.11025008 {cHTg04  
Change in Focus                :      -0.640081 l>P~M50D?{  
     17     0.39321881    -0.15081353 .@Sh,^v  
Change in Focus                :       0.914906 FsZEB/c  
     18     0.20692530    -0.33710703 GuDD7~qxY  
Change in Focus                :       0.801607 .%h_W\M<l  
     19     0.51374068    -0.03029165 #^w 1!xXD  
Change in Focus                :       0.947293 9.}3RAB(cv  
     20     0.38013374    -0.16389860 B>L^XGq  
Change in Focus                :       0.667010 ky"7 ^  
o|.me G  
Number of traceable Monte Carlo files generated: 20 j
o:p*Q"F  
w8Vzx8  
Nominal     0.54403234 mM~Q!`Nf.  
Best        0.54384387    Trial     2 GDe$p;#"9g  
Worst       0.18154684    Trial     4 &1n0(qB  
Mean        0.35770970 \srOU|  
Std Dev     0.11156454 u-cC}DP  
r2`?Ta  
RS=7W._W  
Compensator Statistics: KA[Su0  
Change in back focus: F&Z>B};  
Minimum            :        -1.354815 0drc^rj !  
Maximum            :         1.611296 IiU|@f~k  
Mean               :         0.161872 1x8]&  
Standard Deviation :         0.869664 Pl ,M>IQ  
"K]4j]yU
 
90% >       0.20977951               wQ95tN  
80% >       0.22748071               +o5rR|)M+  
50% >       0.38667627               HM x9M$  
20% >       0.46553746               ,peFNpi  
10% >       0.50064115                FpYoCyD}  
v8=MO:>{R  
End of Run. S+ x[1#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 %|||M=akk  
#`EMK  
<CdO& xUY  
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 Cq'r 'cBZ  
hTqJDP"&F  
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                 #k6T_
ki  
80% >       0.22748071                 }#@LZ)]hK  
50% >       0.38667627                 Uk#1PcPd  
20% >       0.46553746                 >3/<goXk7  
10% >       0.50064115 -rBj-4|"  
YrX{,YtiX  
最后这个数值是MTF值呢，还是MTF的公差？ 6kk(FVX  
_{8boDX#  
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？？？   W3#L!&z_wK  
>jm9x1+C  
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  : #R &F  
90% >       0.20977951                 u(P D+Gz  
80% >       0.22748071                 v6FYlKU@8  
50% >       0.38667627                 TB9ukLG^<<  
20% >       0.46553746                 >qOhzbAH{<  
10% >       0.50064115 ]P-;]*&=  
....... 9G&l{7=  

3SDw-k  
ibh!8"[  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   ?me0J3u_  
Mode                : Sensitivities 8|gwH2st~  
Sampling            : 2 :9.ik  
Nominal Criterion   : 0.54403234 )jvYJ9s  
Test Wavelength     : 0.6328 (Zp'|hx8o  
aqtQGK57"%  
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？ _O{3bIay3!  
=XuBan3B>  
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