[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 PcZ<JJ16F$  
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图片:1.JPG

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然后添加了默认公差分析，基本没变 1~E4]Ef:W  
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图片:2.jpg

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然后运行分析的结果如下： q^^R
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Analysis of Tolerances 1/ j>|  
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File : E:\光学设计资料\zemax练习\f500.ZMX V(LfFO{^>?  
Title: A@d 2Ukv  
Date : TUE JUN 21 2011 e&ZH 1^O  
#pW!(tfN^a  
Units are Millimeters. Z]2z*XD  
All changes are computed using linear differences. $K\e Pfk  
G[>CBh5  
Paraxial Focus compensation only. L$!2<eK  
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WARNING: Solves should be removed prior to tolerancing. ! ,H6.IH;S  
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Mnemonics: r+#g  
TFRN: Tolerance on curvature in fringes. IS[q'Cv*  
TTHI: Tolerance on thickness. G#NbLj`h  
TSDX: Tolerance on surface decentering in x. tp!eF"v=  
TSDY: Tolerance on surface decentering in y. (Lj*FXmz  
TSTX: Tolerance on surface tilt in x (degrees). [GK##z'5  
TSTY: Tolerance on surface tilt in y (degrees). ER&
\2,fZ  
TIRR: Tolerance on irregularity (fringes). k[<i+C";  
TIND: Tolerance on Nd index of refraction. NaQ~iY?  
TEDX: Tolerance on element decentering in x. f0%'4t  
TEDY: Tolerance on element decentering in y. #^|2PFh5  
TETX: Tolerance on element tilt in x (degrees). OU]"uV<(  
TETY: Tolerance on element tilt in y (degrees). @J^ Oy 3z  
@_c&lToj_  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. /']`}*d  
fU%Mz\t  
WARNING: Boundary constraints on compensators will be ignored. 5=9Eb  
5BLBcw\;  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm gth_Sz5!#  
Mode                : Sensitivities "5N$u(: b  
Sampling            : 2 l`X?C~JhJ  
Nominal Criterion   : 0.54403234 ;Tq4!w'rH  
Test Wavelength     : 0.6328 0/z$W.!  
n >E1\($  
} 21!b :a  
Fields: XY Symmetric Angle in degrees SjA'<ZX>TM  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY #-"C_~-MH  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 tv`c"Pb  
"_BWUY  
Sensitivity Analysis: ,PKUgL}w  
i"DyXIrk2  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| |vG?H#y  
Type                      Value      Criterion        Change          Value      Criterion        Change D^];6\=.i  
Fringe tolerance on surface 1 E2.!|u2  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 H#nJWe_9A  
Change in Focus                :      -0.000000                            0.000000 &g*1
If  
Fringe tolerance on surface 2 mB bGj3u;  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 J=O_nup6C  
Change in Focus                :       0.000000                            0.000000 JH2-'  
Fringe tolerance on surface 3 mmNn,>AO!  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 I
>-1kFma;  
Change in Focus                :      -0.000000                            0.000000 Pum&\.l  
Thickness tolerance on surface 1 Ts=TaRwWf  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 fp3`O9+em  
Change in Focus                :       0.000000                            0.000000 pOl6x iMx  
Thickness tolerance on surface 2 7fT_]H8  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675
(X
2[}K  
Change in Focus                :       0.000000                           -0.000000 k#V\O2lb  
Decenter X tolerance on surfaces 1 through 3 H2+Ijn19E  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 dd6l+z  
Change in Focus                :       0.000000                            0.000000 Rp_}_hL0  
Decenter Y tolerance on surfaces 1 through 3 (CYQ>)a  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 t""Y -M  
Change in Focus                :       0.000000                            0.000000 -"2
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Tilt X tolerance on surfaces 1 through 3 (degrees) :F"NF
  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Kj4L PG  
Change in Focus                :       0.000000                            0.000000 K[9P{0hA  
Tilt Y tolerance on surfaces 1 through 3 (degrees) x;STt3M~  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 K)n058PO  
Change in Focus                :       0.000000                            0.000000 dg(sRTi{  
Decenter X tolerance on surface 1 1dy"  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .NF3dC\  
Change in Focus                :       0.000000                            0.000000 J/Ch /Sa  
Decenter Y tolerance on surface 1 Jep/%cT$w  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 V4,\vgGu  
Change in Focus                :       0.000000                            0.000000 C,<FV+r=^  
Tilt X tolerance on surface (degrees) 1 criNeKa  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 I "R<XX  
Change in Focus                :       0.000000                            0.000000 =%[vHQ\%  
Tilt Y tolerance on surface (degrees) 1 $JK,9G[Vu  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 P}!pmg6V  
Change in Focus                :       0.000000                            0.000000 G*zhy!P  
Decenter X tolerance on surface 2 UH5A;SrTqR  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 rPifiLl A>  
Change in Focus                :       0.000000                            0.000000 ]qk`Yi  
Decenter Y tolerance on surface 2 JY D\VaW  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Orlf5{P  
Change in Focus                :       0.000000                            0.000000 uxW<Eh4H*  
Tilt X tolerance on surface (degrees) 2 i$!K{H1{9  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 6D*x5L-1o  
Change in Focus                :       0.000000                            0.000000 Fj&8wZ)v)  
Tilt Y tolerance on surface (degrees) 2 h{ EnS5~  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 3X`N~_+  
Change in Focus                :       0.000000                            0.000000 +\cG{n*  
Decenter X tolerance on surface 3 '|yBz1uL  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 P@Pe5H"o  
Change in Focus                :       0.000000                            0.000000 Te>m9Pav  
Decenter Y tolerance on surface 3 EPEn"{;U  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 \LM{.gzT  
Change in Focus                :       0.000000                            0.000000 _+0c<'  
Tilt X tolerance on surface (degrees) 3 -x>2Wb~%  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Z?."cuTt  
Change in Focus                :       0.000000                            0.000000 "3Ckc"G@  
Tilt Y tolerance on surface (degrees) 3 AASS'H@  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 FaG&U  
Change in Focus                :       0.000000                            0.000000 AnBD~h h  
Irregularity of surface 1 in fringes W)odaab7  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634
bW^{I,b<F  
Change in Focus                :       0.000000                            0.000000 z) "(&__  
Irregularity of surface 2 in fringes v 5&8C  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 <;!#+|L/  
Change in Focus                :       0.000000                            0.000000 _xo;[rEw8  
Irregularity of surface 3 in fringes ?r.U5}PBI  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 MeO2 cy!5q  
Change in Focus                :       0.000000                            0.000000 `k9a$@X
g  
Index tolerance on surface 1 Gnie|[3  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 {_jbFJ  
Change in Focus                :       0.000000                            0.000000 }};AV)}J  
Index tolerance on surface 2 }FkF1?C  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 *
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Change in Focus                :       0.000000                           -0.000000 c&#B1NN<  
QM=Y}   
Worst offenders: [85tZr]  
Type                      Value      Criterion        Change R& HkWe  
TSTY   2            -0.20000000     0.35349910    -0.19053324 ,mE}#cyY  
TSTY   2             0.20000000     0.35349910    -0.19053324 wQOIUvd  
TSTX   2            -0.20000000     0.35349910    -0.19053324 rJCu6  
TSTX   2             0.20000000     0.35349910    -0.19053324 VO,F[E~_  
TSTY   1            -0.20000000     0.42678383    -0.11724851 =n_>7@9l  
TSTY   1             0.20000000     0.42678383    -0.11724851 ?Pt*4NaT;  
TSTX   1            -0.20000000     0.42678383    -0.11724851 AhNz[A  
TSTX   1             0.20000000     0.42678383    -0.11724851 Lr(My3vF8q  
TSTY   3            -0.20000000     0.42861670    -0.11541563 1Zgv+
.  
TSTY   3             0.20000000     0.42861670    -0.11541563 ;
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FOSC#W9E  
Estimated Performance Changes based upon Root-Sum-Square method:
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Nominal MTF                 :     0.54403234 i[n3ILn  
Estimated change            :    -0.36299231 %VO>6iVn  
Estimated MTF               :     0.18104003 "bvob G
 
"1-z'TV=  
Compensator Statistics: Tl-Ix&37  
Change in back focus: I=4G+h5p  
Minimum            :        -0.000000 PED5>90  
Maximum            :         0.000000 wF{M"$am  
Mean               :        -0.000000 81S0:=   
Standard Deviation :         0.000000 vF'Y; M  
-)!;45  
Monte Carlo Analysis: Qs8Rb]%|  
Number of trials: 20 F Xp_`9.zH  
R"O,2+@<.  
Initial Statistics: Normal Distribution &MJ`rj[%  
_>Oc>.MB  
  Trial       Criterion        Change NPt3#k^bW  
      1     0.42804416    -0.11598818 M HKnHPv  
Change in Focus                :      -0.400171 wl%I(Cw{]  
      2     0.54384387    -0.00018847 1<pb=H  
Change in Focus                :       1.018470  y7.oy"  
      3     0.44510003    -0.09893230 NV;T*I8O  
Change in Focus                :      -0.601922 )xYGJq4  
      4     0.18154684    -0.36248550 g,\O}jT\'  
Change in Focus                :       0.920681 NxN~"bfh  
      5     0.28665820    -0.25737414 dY.NQ1@"  
Change in Focus                :       1.253875 k$w#:Sx  
      6     0.21263372    -0.33139862 )bK3%>H#  
Change in Focus                :      -0.903878 ME'LZ"VT  
      7     0.40051424    -0.14351809 \m~Oaf;$  
Change in Focus                :      -1.354815 fOz.kK[]  
      8     0.48754161    -0.05649072 'OsRQ)E  
Change in Focus                :       0.215922 -@mcu{&  
      9     0.40357468    -0.14045766 :2AlvjvjZ  
Change in Focus                :       0.281783 aoU5pftC  
     10     0.26315315    -0.28087919 ~p\r( B7G  
Change in Focus                :      -1.048393 u~1 ,88&U  
     11     0.26120585    -0.28282649 +S
g+% 8T  
Change in Focus                :       1.017611 W%<z|  
     12     0.24033815    -0.30369419 }n?D#Pk,  
Change in Focus                :      -0.109292 {6HgKI  
     13     0.37164046    -0.17239188 BYb"[qPV  
Change in Focus                :      -0.692430 {R5_=MG  
     14     0.48597489    -0.05805744 w)"F=33}5  
Change in Focus                :      -0.662040 zKNac[:  
     15     0.21462327    -0.32940907 r/RX|M  
Change in Focus                :       1.611296 9PJnKzQ4  
     16     0.43378226    -0.11025008 dIk9C|-.  
Change in Focus                :      -0.640081 co>IJzg  
     17     0.39321881    -0.15081353 [lE^0_+  
Change in Focus                :       0.914906 snyA  
     18     0.20692530    -0.33710703 
/O[Z  
Change in Focus                :       0.801607 `/o|1vv@_  
     19     0.51374068    -0.03029165 #[sJKW  
Change in Focus                :       0.947293 $~'G<YYF4  
     20     0.38013374    -0.16389860 t7,**
$ST  
Change in Focus                :       0.667010 fY 10a_@x  
>,c'Z<TM  
Number of traceable Monte Carlo files generated: 20 G PL^!_  
z]1g;j  
Nominal     0.54403234 :qtg`zM/4  
Best        0.54384387    Trial     2 hj=k[t|g}  
Worst       0.18154684    Trial     4 <P-AlHYV-  
Mean        0.35770970 XZj3x',;  
Std Dev     0.11156454 f:ep~5] G  
])vqXjN6"  
Kj#h9e  
Compensator Statistics: Eg$Er*)h8  
Change in back focus: /D;cm  
Minimum            :        -1.354815 iy|xF~  
Maximum            :         1.611296 6\6g-1B`  
Mean               :         0.161872 ,sltB3f  
Standard Deviation :         0.869664 {"\pMY'7  
P7;q^jlB  
90% >       0.20977951               kvam`8SeL  
80% >       0.22748071               UDHMNubB  
50% >       0.38667627               f!JSb?#3  
20% >       0.46553746               Y$
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10% >       0.50064115                J&;' gT  
M&0U@ r-  
End of Run. "cDc~~3/@  
L}>ts(!q&  
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 g
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图片:3.JPG

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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 k(_^Lq f-  
7h\U}!  
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                 u{|^5%)  
80% >       0.22748071                 "Fqrk>Q~  
50% >       0.38667627                 tdnd~WSR  
20% >       0.46553746                 =[`gfw  
10% >       0.50064115 -<^3!C >  
3 /LW6W|  
最后这个数值是MTF值呢，还是MTF的公差？ :bz;_DZP  
}*56DX  
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？？？   ~0Mw\p%}  
JO\KTWtjO  
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  : Bt"*a=t;  
90% >       0.20977951                 |sV@j_TX  
80% >       0.22748071                 wm/>_  
50% >       0.38667627                 <F+9#-  
20% >       0.46553746                 k1M?6TW&  
10% >       0.50064115 @wW)#!Mou  
....... O]\eMM&  

E0"DHjR  
f'B#h;`  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   0+"P1/  
Mode                : Sensitivities v9vY#W  
Sampling            : 2 >)S'`e4Gu  
Nominal Criterion   : 0.54403234 [LHfH3[gU  
Test Wavelength     : 0.6328 ,v*<yz/  
8:t1%O$  
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？ O8S"B6?$~'  
n{r
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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