[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 #oEq)Vq>g|  
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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 `}*jjnr"  
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图片:2.jpg

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然后运行分析的结果如下： rvBKJ!b0  
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Analysis of Tolerances P%Wl`NA P  
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File : E:\光学设计资料\zemax练习\f500.ZMX +g8uV hC  
Title: H9rZWc"*  
Date : TUE JUN 21 2011 l[{Ci|4  
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Units are Millimeters. RX\@fmK&  
All changes are computed using linear differences. ;%xG bg!lg  
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Paraxial Focus compensation only. -.hH,zm  
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WARNING: Solves should be removed prior to tolerancing. nF{>RD  
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Mnemonics: 7'TXR[  
TFRN: Tolerance on curvature in fringes. +ZeK,Y+Xy  
TTHI: Tolerance on thickness. {m5R=2
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TSDX: Tolerance on surface decentering in x. b;t b&o  
TSDY: Tolerance on surface decentering in y. ?1lx8+  
TSTX: Tolerance on surface tilt in x (degrees). M@O<b-  
TSTY: Tolerance on surface tilt in y (degrees). BZ@v8y _TA  
TIRR: Tolerance on irregularity (fringes). He)dm5#fg  
TIND: Tolerance on Nd index of refraction. Gm'Ch}E  
TEDX: Tolerance on element decentering in x. _CXXgF[OCA  
TEDY: Tolerance on element decentering in y. s&Qil07Vl  
TETX: Tolerance on element tilt in x (degrees). K2t|d[r  
TETY: Tolerance on element tilt in y (degrees). ?&r>`H E  
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WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ($:JI3e[;  
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WARNING: Boundary constraints on compensators will be ignored. R3} Z"  

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Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm XX'Rv
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Mode                : Sensitivities VWcR@/3  
Sampling            : 2 Cr%6c3aQ  
Nominal Criterion   : 0.54403234 {t&+abY
 
Test Wavelength     : 0.6328 2[$` ]{U  
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Fields: XY Symmetric Angle in degrees { w:9w  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY j8#B  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ~yuj;9m3  
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Sensitivity Analysis: gSu3\keF  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| Vch!&8xii  
Type                      Value      Criterion        Change          Value      Criterion        Change Z )dz  
Fringe tolerance on surface 1 p3(&9~s  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 t=oTU,<  
Change in Focus                :      -0.000000                            0.000000 B%d2tsDw  
Fringe tolerance on surface 2 $2\k| @)s  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ceP1mO  
Change in Focus                :       0.000000                            0.000000 ij~023$DTt  
Fringe tolerance on surface 3 #y%?A;  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 dsJHhsu6  
Change in Focus                :      -0.000000                            0.000000 UHW;e}O5  
Thickness tolerance on surface 1 :ift{XR'  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 3Q"4-pd  
Change in Focus                :       0.000000                            0.000000 d ;W(Vm6  
Thickness tolerance on surface 2 2KC~;5  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 &MsBcP[
 
Change in Focus                :       0.000000                           -0.000000 ^atB
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Decenter X tolerance on surfaces 1 through 3 xlWT
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TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 O<v9i4*  
Change in Focus                :       0.000000                            0.000000 =!%+ sem  
Decenter Y tolerance on surfaces 1 through 3 y~\K~qjd  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 (j;6}@  
Change in Focus                :       0.000000                            0.000000 ?krgZ;Jj  
Tilt X tolerance on surfaces 1 through 3 (degrees) ~ -hH#5  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 W
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Change in Focus                :       0.000000                            0.000000 .5x+FHu7  
Tilt Y tolerance on surfaces 1 through 3 (degrees) *m[ow s  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 bqDHLoB\1  
Change in Focus                :       0.000000                            0.000000 -dn\*n5  
Decenter X tolerance on surface 1 D>Qc/+  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 X%b.]A  
Change in Focus                :       0.000000                            0.000000 e-#!3j!'  
Decenter Y tolerance on surface 1 7!E?(3$#"  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 8
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Change in Focus                :       0.000000                            0.000000 $xf{m9 8  
Tilt X tolerance on surface (degrees) 1 'M#'BQQ5  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 q0hg0DC[;  
Change in Focus                :       0.000000                            0.000000 C,xM)V^a  
Tilt Y tolerance on surface (degrees) 1 0FV?By  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 f}cz_"o4  
Change in Focus                :       0.000000                            0.000000 d?/?VooU  
Decenter X tolerance on surface 2 75V?K  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 2$O@T]  
Change in Focus                :       0.000000                            0.000000 V3u[{^^f  
Decenter Y tolerance on surface 2 zU9G:jH  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 0#rv.rJ{  
Change in Focus                :       0.000000                            0.000000 1wa zJj=v  
Tilt X tolerance on surface (degrees) 2 ![BQ;X  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 yw
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Change in Focus                :       0.000000                            0.000000 |&t 2jD(  
Tilt Y tolerance on surface (degrees) 2 xNh#=6__9  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Z;{3RWV  
Change in Focus                :       0.000000                            0.000000 I~$LIdzw  
Decenter X tolerance on surface 3 {g>k-.  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 {<HL}m@kQ  
Change in Focus                :       0.000000                            0.000000 t1)b26;  
Decenter Y tolerance on surface 3 Jn>7MuG  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 >k?/'R  
Change in Focus                :       0.000000                            0.000000 btK| U  
Tilt X tolerance on surface (degrees) 3 .f V-puE  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 jy] hP?QG  
Change in Focus                :       0.000000                            0.000000 i~dW)7  
Tilt Y tolerance on surface (degrees) 3 l0 H,TT~2  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 L$GhM!c  
Change in Focus                :       0.000000                            0.000000 $GyO+xF  
Irregularity of surface 1 in fringes T7AFL=  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 e4V4%Q
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Change in Focus                :       0.000000                            0.000000 bqXCe\#  
Irregularity of surface 2 in fringes V6,D~7  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 nz|;6?LCLY  
Change in Focus                :       0.000000                            0.000000 BHE((3  
Irregularity of surface 3 in fringes ,R1`/aRy  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 bc"E=z  
Change in Focus                :       0.000000                            0.000000 &rX..l  
Index tolerance on surface 1 -}m#uUqI  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 UlHRA[SCv  
Change in Focus                :       0.000000                            0.000000 Hut au^l  
Index tolerance on surface 2 .[hQ#3)W  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 ~EIY(^|py  
Change in Focus                :       0.000000                           -0.000000 oQC*d}_E}  
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Worst offenders: hv'~S  
Type                      Value      Criterion        Change ,#1ke  
TSTY   2            -0.20000000     0.35349910    -0.19053324 /(w:XTO<  
TSTY   2             0.20000000     0.35349910    -0.19053324 ,P ?TYk  
TSTX   2            -0.20000000     0.35349910    -0.19053324 "3{xa;c  
TSTX   2             0.20000000     0.35349910    -0.19053324 z[DUktZl  
TSTY   1            -0.20000000     0.42678383    -0.11724851 PXcpROg56  
TSTY   1             0.20000000     0.42678383    -0.11724851 ]],6Fi+  
TSTX   1            -0.20000000     0.42678383    -0.11724851 Wiqy".YY  
TSTX   1             0.20000000     0.42678383    -0.11724851 JEX
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TSTY   3            -0.20000000     0.42861670    -0.11541563 C|Bk'<MI  
TSTY   3             0.20000000     0.42861670    -0.11541563 >wjWX{&?  
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Estimated Performance Changes based upon Root-Sum-Square method: ch<Fi%)  
Nominal MTF                 :     0.54403234 cve(pkl  
Estimated change            :    -0.36299231 e0HG"z4  
Estimated MTF               :     0.18104003 R0;c'W)  
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Compensator Statistics: 36JVnW;  
Change in back focus: f)q\RJA)X  
Minimum            :        -0.000000 )#MKOsOct  
Maximum            :         0.000000 ,~FyC_%*  
Mean               :        -0.000000 (|Am  
Standard Deviation :         0.000000 !arcQ:T@G  
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Monte Carlo Analysis: j-ugsV`2=*  
Number of trials: 20 [UquI "  
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Initial Statistics: Normal Distribution R:B-4  
1 ,oC:N  
  Trial       Criterion        Change ]DdD FLM  
      1     0.42804416    -0.11598818 MC/$:PV  
Change in Focus                :      -0.400171 {o7ibw=E)  
      2     0.54384387    -0.00018847 A6}M F  
Change in Focus                :       1.018470 0\wMlV`F  
      3     0.44510003    -0.09893230 /`0*!sN*5  
Change in Focus                :      -0.601922 P"_x/C(]@J  
      4     0.18154684    -0.36248550 BD,JBu]  
Change in Focus                :       0.920681 "OF
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      5     0.28665820    -0.25737414 JGSeu
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Change in Focus                :       1.253875 kR6rf
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      6     0.21263372    -0.33139862 4QK([q  
Change in Focus                :      -0.903878 o(>!T=f  
      7     0.40051424    -0.14351809 '/SMq
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Change in Focus                :      -1.354815 h$~ NPX  
      8     0.48754161    -0.05649072 $}l0Nh'Eu  
Change in Focus                :       0.215922 bXc7$5(!VB  
      9     0.40357468    -0.14045766 z7MJxjH  
Change in Focus                :       0.281783 p*W4^2(d  
     10     0.26315315    -0.28087919 P$2J`b[H$  
Change in Focus                :      -1.048393 @\Sa)  
     11     0.26120585    -0.28282649 J$&!Y[0  
Change in Focus                :       1.017611 iBxCk^  
     12     0.24033815    -0.30369419 S D]d/|y  
Change in Focus                :      -0.109292 QY-P!JD  
     13     0.37164046    -0.17239188 XcaY'k#  
Change in Focus                :      -0.692430 Q5r cPU>A  
     14     0.48597489    -0.05805744 v*QobI  
Change in Focus                :      -0.662040 Iqe4O~)  
     15     0.21462327    -0.32940907 /J3e[?78u  
Change in Focus                :       1.611296 dnNC = siY  
     16     0.43378226    -0.11025008 Tx0/3^\>8A  
Change in Focus                :      -0.640081 jN 5Hku[?  
     17     0.39321881    -0.15081353 q+dY&4&u  
Change in Focus                :       0.914906 6YrkS;_HS  
     18     0.20692530    -0.33710703 6*kY7  
Change in Focus                :       0.801607 }0?642 =-  
     19     0.51374068    -0.03029165 =]\,I'  
Change in Focus                :       0.947293 sL~TV([6/  
     20     0.38013374    -0.16389860 }{:H0)H*  
Change in Focus                :       0.667010 J^pL_  
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Number of traceable Monte Carlo files generated: 20 `f*
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Nominal     0.54403234 W )q^@6[d  
Best        0.54384387    Trial     2 aT(Pf7 O  
Worst       0.18154684    Trial     4 +kH*BhSj  
Mean        0.35770970 f'aUo|^?  
Std Dev     0.11156454 0^]E-Zf  
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:De}5BMy  
Compensator Statistics: vC$[Zm  
Change in back focus: fa/ '4  
Minimum            :        -1.354815 E0>4Q\n{  
Maximum            :         1.611296 -#Yg B5  
Mean               :         0.161872 zbx,qctYo$  
Standard Deviation :         0.869664 !a~>;+  
D^04b<O<x  
90% >       0.20977951               QT9(s\u  
80% >       0.22748071               ^g~Asz5]  
50% >       0.38667627               p44d&9  
20% >       0.46553746               aIRCz=N
 
10% >       0.50064115                aoco'BR F  
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End of Run. :!N 5daK  
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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 PsEm(.z  

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 7cr+a4T33  
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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                 E O52 E|  
80% >       0.22748071                 DFwkd/3"  
50% >       0.38667627                 iJZqAfG{m?  
20% >       0.46553746                 zob^z@2  
10% >       0.50064115 /wljbb/s  
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最后这个数值是MTF值呢，还是MTF的公差？ '6Ybf  
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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？？？   6$4G&'J  
@r%[e1.  
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  : ( MWh|kp  
90% >       0.20977951                 ^ b{0|:  
80% >       0.22748071                 f>k]{W Y  
50% >       0.38667627                 e%uPZ >'q  
20% >       0.46553746                 %"r3{Hs  
10% >       0.50064115 -|\V'  
....... ^q-]."W]t~  

dT4?8:  
OCnQSkj  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   i2j_=X-  
Mode                : Sensitivities vnwS&;-k~  
Sampling            : 2 48vKUAzx`  
Nominal Criterion   : 0.54403234 u&z5)iU  
Test Wavelength     : 0.6328 Aj((tMJNOw  
lK;|ciq"c7  
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？ d+[GMIxg  
wXI6KN-  
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