[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 d/+s-g p  
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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 Bk~lM'  
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图片:2.jpg

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然后运行分析的结果如下： usKP9[T$  
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Analysis of Tolerances st.{AEv@  
9 M?UPE  
File : E:\光学设计资料\zemax练习\f500.ZMX ~[aV\r?  
Title: ',|OoxhbK  
Date : TUE JUN 21 2011 :%28*fl  
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Units are Millimeters. 7Kj7or|  
All changes are computed using linear differences. f;+.j/ +  
uARkf'  
Paraxial Focus compensation only. fMHw=wJQ  
EHl~y=9  
WARNING: Solves should be removed prior to tolerancing. WcXNc`x  
5KTFf6Uq  
Mnemonics: grI#'x  
TFRN: Tolerance on curvature in fringes. l7<VHz0b  
TTHI: Tolerance on thickness. &_@M 6[-  
TSDX: Tolerance on surface decentering in x. ^G5fs'd  
TSDY: Tolerance on surface decentering in y. 5&A' +]  
TSTX: Tolerance on surface tilt in x (degrees). !Dc;R+Ir0!  
TSTY: Tolerance on surface tilt in y (degrees). z 36Y/{>[  
TIRR: Tolerance on irregularity (fringes). ?#doH,  
TIND: Tolerance on Nd index of refraction. S,,Wb&A$  
TEDX: Tolerance on element decentering in x. 'F*OlZ!BWy  
TEDY: Tolerance on element decentering in y. bF;|0X$ x  
TETX: Tolerance on element tilt in x (degrees). ",5=LW&,  
TETY: Tolerance on element tilt in y (degrees).
SN7_^F  
EronNtu8i  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 'UGgY3  
wsR\qq  
WARNING: Boundary constraints on compensators will be ignored. -nD}k  
=_6 Q26  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm {~#01p5  
Mode                : Sensitivities ?!c7Zx,(  
Sampling            : 2 8MU7|9 Q  
Nominal Criterion   : 0.54403234 6/'X$
}X  
Test Wavelength     : 0.6328 %3=T7j  
jCx*{TO  
6Y.k<oem  
Fields: XY Symmetric Angle in degrees hr&UD|E=  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY a>ye  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 %rl<%%T#.M  
J!Rq
m!)q  
Sensitivity Analysis: d;3f80Kd*  
V.+a}J=Cw  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| {q&`B  
Type                      Value      Criterion        Change          Value      Criterion        Change >r4BI}8SK<  
Fringe tolerance on surface 1 >*|Eyv_  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 !0Ak)Q]e'  
Change in Focus                :      -0.000000                            0.000000 XCez5Q1  
Fringe tolerance on surface 2 qM>Dt  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 a@? Bv  
Change in Focus                :       0.000000                            0.000000 ,d HAD  
Fringe tolerance on surface 3 Y'}c$*OkI  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 gxVJH'[V5  
Change in Focus                :      -0.000000                            0.000000 dJb7d`  
Thickness tolerance on surface 1 ,oEAWNbgQ  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ,[_)BM  
Change in Focus                :       0.000000                            0.000000 ~X;sa,)L1+  
Thickness tolerance on surface 2 p-z!i+  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 e)L!4Y44K  
Change in Focus                :       0.000000                           -0.000000 0'zjPE#  
Decenter X tolerance on surfaces 1 through 3 J|z' <W  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 6Tq2WZ}<'  
Change in Focus                :       0.000000                            0.000000 5mZ9rLn  
Decenter Y tolerance on surfaces 1 through 3 :X1Y  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 D{+D.4\  
Change in Focus                :       0.000000                            0.000000 X&i" K'mV  
Tilt X tolerance on surfaces 1 through 3 (degrees) Aq$o&t  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 09iD| $~  
Change in Focus                :       0.000000                            0.000000 'Rv.6>xqc  
Tilt Y tolerance on surfaces 1 through 3 (degrees) sBE@{w%  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +xr;X 9  
Change in Focus                :       0.000000                            0.000000 mm |*  
Decenter X tolerance on surface 1 tg~7^(s  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 LsK fCB}  
Change in Focus                :       0.000000                            0.000000 iZ(p]0aP7  
Decenter Y tolerance on surface 1 nxuR^6Ai  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 E/d\ebX|  
Change in Focus                :       0.000000                            0.000000 {#+'T13sx  
Tilt X tolerance on surface (degrees) 1 OJ7
y  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 2\Yv;J+;  
Change in Focus                :       0.000000                            0.000000 #vR5a}BAk  
Tilt Y tolerance on surface (degrees) 1 a7]Z_Gk  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 +J !1z  
Change in Focus                :       0.000000                            0.000000 d%1Vby  
Decenter X tolerance on surface 2 6x@]b>W  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 7#g<
fh  
Change in Focus                :       0.000000                            0.000000 r6+IJxUd  
Decenter Y tolerance on surface 2 !:D,|k\m  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 Mi[,-8Sk  
Change in Focus                :       0.000000                            0.000000 y8|}bd<Sr  
Tilt X tolerance on surface (degrees) 2 Lo9 \[4FP  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 d^|r#"o[  
Change in Focus                :       0.000000                            0.000000 tkdyR1-  
Tilt Y tolerance on surface (degrees) 2 A+hT2Ew@t}  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 (`f)Tt=`  
Change in Focus                :       0.000000                            0.000000 (=s%>lW|  
Decenter X tolerance on surface 3 `u8=~]rblj  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 D._7)$d  
Change in Focus                :       0.000000                            0.000000 7$:Jea  
Decenter Y tolerance on surface 3 * \tR  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 1[". z{V3*  
Change in Focus                :       0.000000                            0.000000 uq]E^#^  
Tilt X tolerance on surface (degrees) 3 M[&p[P@  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Wp=&nh  
Change in Focus                :       0.000000                            0.000000 9sB LCZ  
Tilt Y tolerance on surface (degrees) 3 U9//m=_  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 p;vrPS  
Change in Focus                :       0.000000                            0.000000 h)?Km{u%  
Irregularity of surface 1 in fringes l @r`NFWD@  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ^aL> /'Y#|  
Change in Focus                :       0.000000                            0.000000 CSE!Abg  
Irregularity of surface 2 in fringes !p70g0+  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 &_Gu'A({J  
Change in Focus                :       0.000000                            0.000000 @<p9O0  
Irregularity of surface 3 in fringes '\LU 8VC  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 Ua>.k|>0  
Change in Focus                :       0.000000                            0.000000 IpsV4nmnz-  
Index tolerance on surface 1 d#HN'(2t  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 bY=Yb  
Change in Focus                :       0.000000                            0.000000 ~*G}+Ur$2  
Index tolerance on surface 2 8EZ,hY^  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 +PHuQ  
Change in Focus                :       0.000000                           -0.000000 toC|vn&P  
g_MxG!+(V  
Worst offenders:  ev(E  
Type                      Value      Criterion        Change 1.z !u%2  
TSTY   2            -0.20000000     0.35349910    -0.19053324 SQf.R%cg$  
TSTY   2             0.20000000     0.35349910    -0.19053324 N_y#Y{c{(  
TSTX   2            -0.20000000     0.35349910    -0.19053324 sQa9M  
TSTX   2             0.20000000     0.35349910    -0.19053324 ltmD=-]G_  
TSTY   1            -0.20000000     0.42678383    -0.11724851 Z4PAdT  
TSTY   1             0.20000000     0.42678383    -0.11724851 D?9EO=  
TSTX   1            -0.20000000     0.42678383    -0.11724851 @S Quc  
TSTX   1             0.20000000     0.42678383    -0.11724851 ~RnBs`&!  
TSTY   3            -0.20000000     0.42861670    -0.11541563 VN<baK%]  
TSTY   3             0.20000000     0.42861670    -0.11541563 78u=Jz6  
c}#(,<8X  
Estimated Performance Changes based upon Root-Sum-Square method: N
+ei)-  
Nominal MTF                 :     0.54403234 is=|rY9$  
Estimated change            :    -0.36299231 _1HEGX\  
Estimated MTF               :     0.18104003 PAy7b7m~B  
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Compensator Statistics: vjXCArS  
Change in back focus: `k'Dm:*`u4  
Minimum            :        -0.000000 ${, !Ll7)  
Maximum            :         0.000000 6
T A2  
Mean               :        -0.000000 b]5S9^=LI  
Standard Deviation :         0.000000 R2nDK7j  
)N]%cO(^  
Monte Carlo Analysis: Z`bo1,6>  
Number of trials: 20 ju
;Myi}a  
L~L]MC&  
Initial Statistics: Normal Distribution kv?j]<WN  
 [IW6F  
  Trial       Criterion        Change <fcw:Ae  
      1     0.42804416    -0.11598818 7:h_U9Za?$  
Change in Focus                :      -0.400171 .[X"+i\  
      2     0.54384387    -0.00018847 8]0?mV8iOE  
Change in Focus                :       1.018470 |0aGX]Y  
      3     0.44510003    -0.09893230 Qx !! Ttd{  
Change in Focus                :      -0.601922 V
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      4     0.18154684    -0.36248550 oJ)v6"j  
Change in Focus                :       0.920681 .aqP=  
      5     0.28665820    -0.25737414 Zl`sY5{1  
Change in Focus                :       1.253875 I'16-  
      6     0.21263372    -0.33139862 7)+%;|~  
Change in Focus                :      -0.903878 &5;y&dh  
      7     0.40051424    -0.14351809 U-:_4[
 
Change in Focus                :      -1.354815 3+# "4O  
      8     0.48754161    -0.05649072 z`+j]NX]  
Change in Focus                :       0.215922 TGQDt|+Z  
      9     0.40357468    -0.14045766 i"C?6R
 
Change in Focus                :       0.281783 I~I$/j]e`  
     10     0.26315315    -0.28087919 ^,;8ra*h  
Change in Focus                :      -1.048393 $;%dQ!7*  
     11     0.26120585    -0.28282649 t>>\U X  
Change in Focus                :       1.017611 Q\<^ih51  
     12     0.24033815    -0.30369419 IpMZ{kJlv`  
Change in Focus                :      -0.109292 7u7 <"?v=  
     13     0.37164046    -0.17239188 'P?DZE  
Change in Focus                :      -0.692430 SB`"%6  
     14     0.48597489    -0.05805744 n`)wD~mk  
Change in Focus                :      -0.662040 s|=.L&"   
     15     0.21462327    -0.32940907 auT$
-Ki8  
Change in Focus                :       1.611296 Dhe ]f#d  
     16     0.43378226    -0.11025008 #>byP?)n  
Change in Focus                :      -0.640081 y[@<goT  
     17     0.39321881    -0.15081353 4FgY!k  
Change in Focus                :       0.914906 0^{?kg2o_  
     18     0.20692530    -0.33710703 4$!iw3N(  
Change in Focus                :       0.801607 P&@[ j0  
     19     0.51374068    -0.03029165 )CCrO   
Change in Focus                :       0.947293 (">gLr  
     20     0.38013374    -0.16389860 a0ze7F<(  
Change in Focus                :       0.667010 A/"p PO  
xiPP&$mg  
Number of traceable Monte Carlo files generated: 20 juuV3et  
Bswd20(w  
Nominal     0.54403234 QWBQ0#L  
Best        0.54384387    Trial     2 pJ1Q~tI  
Worst       0.18154684    Trial     4 U)N_/  
Mean        0.35770970 %L9A6%gr  
Std Dev     0.11156454 +tXOP|X  
gZr/Dfy  
~|~j
01#  
Compensator Statistics: [oQ&}3\XJ  
Change in back focus: |cBpX+D  
Minimum            :        -1.354815 !*gTC1bvB  
Maximum            :         1.611296 {E~MqrX  
Mean               :         0.161872 O$=)  
Standard Deviation :         0.869664 6uijxia  
z!I(B^)BkT  
90% >       0.20977951               x@]pUA1  
80% >       0.22748071               JDzkv%E^  
50% >       0.38667627               9GZKT{*  
20% >       0.46553746               AT{ewb  
10% >       0.50064115                 ,JcQp=g  
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End of Run. &n:F])`2  
7^J-5lY3S  
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 1+^L,-k!  

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 9R"bo*RIS  
[lC*|4t&  
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                 T"Wq:  
80% >       0.22748071                 ~2~KcgPsq  
50% >       0.38667627                 d*1@lmV*  
20% >       0.46553746                 AdB5D_ Ir  
10% >       0.50064115 ]P ->xJ  
0}Xkj)R,  
最后这个数值是MTF值呢，还是MTF的公差？ B{|P}fN5}  
6kjBd3  
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$pHfNTH  
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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  : 'iMI&?8u  
90% >       0.20977951                 4VaUa8 D  
80% >       0.22748071                 Fdu0?H2TL  
50% >       0.38667627                 G5=(3V%  
20% >       0.46553746                 ^lRXc.c z  
10% >       0.50064115 2;[75(l6|}  
....... WU#bA|Cf  

#B`"B  
jDgiH
}  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   wOHK dQ'  
Mode                : Sensitivities fgn*3 pg  
Sampling            : 2 e#kPf 'gL  
Nominal Criterion   : 0.54403234 ./5|i*ow  
Test Wavelength     : 0.6328 X_Y$-I$qd  
&ks>.l\  
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？ W.zA1S  
s}`=pk/FM  
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