[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 Z^h4%o-l{  
-_2=NA?t  

图片:1.JPG

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然后添加了默认公差分析，基本没变 #fFEo)YG  
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图片:2.jpg

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然后运行分析的结果如下： W0?yPP=.  
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Analysis of Tolerances EatpORq  
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File : E:\光学设计资料\zemax练习\f500.ZMX }R J2\CP  
Title: ypml22)kz  
Date : TUE JUN 21 2011 ]];7ozS)X  
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Units are Millimeters. oACE:h9U  
All changes are computed using linear differences. 7?kvrIuY&  

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Paraxial Focus compensation only. 9(H8MUF0{  
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WARNING: Solves should be removed prior to tolerancing. Gd'^vqo<  
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Mnemonics: gz$=\=%>RL  
TFRN: Tolerance on curvature in fringes. u]oS91  
TTHI: Tolerance on thickness. CjO/q)vV  
TSDX: Tolerance on surface decentering in x. !867DX3*  
TSDY: Tolerance on surface decentering in y. Ak1f*HGl|  
TSTX: Tolerance on surface tilt in x (degrees). |g7E*1Ie  
TSTY: Tolerance on surface tilt in y (degrees). ZkK +?:9  
TIRR: Tolerance on irregularity (fringes). HL_MuyE  
TIND: Tolerance on Nd index of refraction. a1GyI  
TEDX: Tolerance on element decentering in x. Xe%n.DW m  
TEDY: Tolerance on element decentering in y. R!,RZ?|v  
TETX: Tolerance on element tilt in x (degrees). "#p)Z{v"!  
TETY: Tolerance on element tilt in y (degrees). 7u!p.kN  
!Hgq7vZG  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 1~_]"Y'  
Et7AAV*8g  
WARNING: Boundary constraints on compensators will be ignored. u2F 3>s  
$+rdzsf)+/  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm t=U[ ;?  
Mode                : Sensitivities 2/h Mx-  
Sampling            : 2 '9b<r7\@  
Nominal Criterion   : 0.54403234 b^%4_[uRu  
Test Wavelength     : 0.6328 )"q2DjfX*  
qC]D9 A  
>u6kT\|^C  
Fields: XY Symmetric Angle in degrees 1*=[% d7  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY <x1(}x:u`  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 VNMhtwmK,  
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Sensitivity Analysis: v_Jp9  
m(&ZNZK  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| O[-wm;_(=*  
Type                      Value      Criterion        Change          Value      Criterion        Change 2Ejs{KUj  
Fringe tolerance on surface 1 &\5T`|~)!  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 M>'-P  
Change in Focus                :      -0.000000                            0.000000 v1;`.PWD  
Fringe tolerance on surface 2 ^D6JckW  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 s=28.  
Change in Focus                :       0.000000                            0.000000 o{:D  
Fringe tolerance on surface 3 ##FN0|e&  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 AR)&W/S)7,  
Change in Focus                :      -0.000000                            0.000000 X3q'x}{  
Thickness tolerance on surface 1 m-;u]X=a  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 KUB"@wUr  
Change in Focus                :       0.000000                            0.000000 gBresHrlH  
Thickness tolerance on surface 2 w8>p[F5`O  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 .'SM|r$  
Change in Focus                :       0.000000                           -0.000000 & 8e~<  
Decenter X tolerance on surfaces 1 through 3 :egSW2"5S  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 a-O9[?G/x  
Change in Focus                :       0.000000                            0.000000 K34y3i_  
Decenter Y tolerance on surfaces 1 through 3 0WQ0-~wx  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 +DVU"d  
Change in Focus                :       0.000000                            0.000000 Fnr*.k  
Tilt X tolerance on surfaces 1 through 3 (degrees) :y]l`Mo -  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 jp2l}C  
Change in Focus                :       0.000000                            0.000000 DGp'Xx_8  
Tilt Y tolerance on surfaces 1 through 3 (degrees) ah
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TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "< [D1E\  
Change in Focus                :       0.000000                            0.000000 "bC8/^  
Decenter X tolerance on surface 1 O^ f[ugs  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 2
)mKcUL-  
Change in Focus                :       0.000000                            0.000000 $yOfqr  
Decenter Y tolerance on surface 1 N7
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TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ^W'\8L  
Change in Focus                :       0.000000                            0.000000 oz@yF)/Sm  
Tilt X tolerance on surface (degrees) 1 dpTap<Noby  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 9;q@;)'5  
Change in Focus                :       0.000000                            0.000000 ynDa4HB  
Tilt Y tolerance on surface (degrees) 1 8a"aJYj  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 oXfLNe6>L  
Change in Focus                :       0.000000                            0.000000 v%B^\S3)  
Decenter X tolerance on surface 2 *bwLih!}H  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 U<o,`y[Tn  
Change in Focus                :       0.000000                            0.000000 zYF'XB]4  
Decenter Y tolerance on surface 2 #&&^5r-b-  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 KWU#Swa`  
Change in Focus                :       0.000000                            0.000000 XnV|{X%]U  
Tilt X tolerance on surface (degrees) 2 (\M&/X~q  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 >WG$!o+R  
Change in Focus                :       0.000000                            0.000000 } fSbH  
Tilt Y tolerance on surface (degrees) 2 2Xgn[oI{  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 q!}&<w~|  
Change in Focus                :       0.000000                            0.000000 :aco$ZNH5  
Decenter X tolerance on surface 3 ^D/*Hp _  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 oDA1#-  
Change in Focus                :       0.000000                            0.000000 4l[f}Z  
Decenter Y tolerance on surface 3 0Ac]&N d`  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 5Sk87o1E(d  
Change in Focus                :       0.000000                            0.000000 BxlpI[yWq  
Tilt X tolerance on surface (degrees) 3 fv#e 8y  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 Zj!S('hSY  
Change in Focus                :       0.000000                            0.000000 7?/ Fr(\  
Tilt Y tolerance on surface (degrees) 3 Ge|caiH1I  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 =3""D{l  
Change in Focus                :       0.000000                            0.000000 f+J<sk  
Irregularity of surface 1 in fringes
=suj3.   
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 %
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Change in Focus                :       0.000000                            0.000000 6-<,1Q'D  
Irregularity of surface 2 in fringes pSay^9ZI  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 &vd9\Pp  
Change in Focus                :       0.000000                            0.000000 'sz
kn0  
Irregularity of surface 3 in fringes e)>Z&e,3  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 )|'? uN7  
Change in Focus                :       0.000000                            0.000000 >:h 8T]F  
Index tolerance on surface 1 En-eG37l  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 rzY7f: '  
Change in Focus                :       0.000000                            0.000000 N!r@M."  
Index tolerance on surface 2 KZ;U6TBiB  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 CKrh14ul  
Change in Focus                :       0.000000                           -0.000000 I6h{
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Worst offenders: nA5v+d-<T  
Type                      Value      Criterion        Change z2S53^C*  
TSTY   2            -0.20000000     0.35349910    -0.19053324 8_m
dh+  
TSTY   2             0.20000000     0.35349910    -0.19053324 \S1WF?<,  
TSTX   2            -0.20000000     0.35349910    -0.19053324 Fg`r:,(a  
TSTX   2             0.20000000     0.35349910    -0.19053324 {.;MsE  
TSTY   1            -0.20000000     0.42678383    -0.11724851 Vz51=?75  
TSTY   1             0.20000000     0.42678383    -0.11724851 cAAJ7?  
TSTX   1            -0.20000000     0.42678383    -0.11724851 .kvuI6H  
TSTX   1             0.20000000     0.42678383    -0.11724851 6^}GXfJAc  
TSTY   3            -0.20000000     0.42861670    -0.11541563 //f[%j*>  
TSTY   3             0.20000000     0.42861670    -0.11541563 F(}d|z@@  
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Estimated Performance Changes based upon Root-Sum-Square method: RhXX/HFk  
Nominal MTF                 :     0.54403234 y! 7;Z~"  
Estimated change            :    -0.36299231 Z'PL?;&+R  
Estimated MTF               :     0.18104003 hH`yQGZ  
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Compensator Statistics: nD!C9G#oS  
Change in back focus: I?Eh 0fI  
Minimum            :        -0.000000 )xlNj$(x5n  
Maximum            :         0.000000 enK4`+.7  
Mean               :        -0.000000 u*}6)=+:  
Standard Deviation :         0.000000 Z9 }qds6 y  
A&)P_B1|  
Monte Carlo Analysis: ;m{[9i`2  
Number of trials: 20 H Viu7kue`  
:KMo'pL  
Initial Statistics: Normal Distribution rOS fDv  
3zMmpeq  
  Trial       Criterion        Change qS+'#Sn  
      1     0.42804416    -0.11598818 fh:=ja?bM3  
Change in Focus                :      -0.400171 L&
q~5 9  
      2     0.54384387    -0.00018847 ;@ %~eIlu  
Change in Focus                :       1.018470 hFs0qPVY  
      3     0.44510003    -0.09893230 R qOEQ*k  
Change in Focus                :      -0.601922 yV=hi?f-[V  
      4     0.18154684    -0.36248550 _Ev"/%  
Change in Focus                :       0.920681 ZO W{rv]  
      5     0.28665820    -0.25737414 -P@o>#Em  
Change in Focus                :       1.253875 cD-\fRBGK  
      6     0.21263372    -0.33139862 GcHWalm  
Change in Focus                :      -0.903878 .ikFqZ$$  
      7     0.40051424    -0.14351809 |#f P8OK  
Change in Focus                :      -1.354815 6@; w%Ea  
      8     0.48754161    -0.05649072 z| i$eF;x3  
Change in Focus                :       0.215922  @X  
      9     0.40357468    -0.14045766 DM~Q+C=Yr  
Change in Focus                :       0.281783 ezC55nm  
     10     0.26315315    -0.28087919 dcYUw]  
Change in Focus                :      -1.048393 RkP7}ZA;  
     11     0.26120585    -0.28282649 t.485L%  
Change in Focus                :       1.017611 d\'M ~VQ  
     12     0.24033815    -0.30369419 0JKbp*H  
Change in Focus                :      -0.109292 ]%"Z[R   
     13     0.37164046    -0.17239188 _H<ur?G  
Change in Focus                :      -0.692430 :q0C$xF  
     14     0.48597489    -0.05805744 V92e#AR  
Change in Focus                :      -0.662040 xGPt5l<M&  
     15     0.21462327    -0.32940907 80c\O-{  
Change in Focus                :       1.611296 +twJHf_U  
     16     0.43378226    -0.11025008 ;'p X1T  
Change in Focus                :      -0.640081 bmzs!fg_~R  
     17     0.39321881    -0.15081353 ^L*:0P~  
Change in Focus                :       0.914906 ~Se/uL;*  
     18     0.20692530    -0.33710703 @;JT }R H-  
Change in Focus                :       0.801607 b6R0za  
     19     0.51374068    -0.03029165 +.b~2K1  
Change in Focus                :       0.947293 adHHnH`,  
     20     0.38013374    -0.16389860 ^h4Q2Mv o  
Change in Focus                :       0.667010 [{f{E  
{SCwi;m  
Number of traceable Monte Carlo files generated: 20 JG0TbM1(Bt  
MpGWt#  
Nominal     0.54403234 8&3+=<U  
Best        0.54384387    Trial     2 : R.,<DQM  
Worst       0.18154684    Trial     4
f:=q=i  
Mean        0.35770970 |!flR? OU  
Std Dev     0.11156454 rR^VW^|f  
"a>%tsl$K
 
gMFTZQsP  
Compensator Statistics: m:ITyQ+  
Change in back focus: rnEWTk7&  
Minimum            :        -1.354815 O
Ac+LdT  
Maximum            :         1.611296 "72 _Sw  
Mean               :         0.161872 ~~&8I!r e  
Standard Deviation :         0.869664 haqL DVrf  
\b{=&B[Q$'  
90% >       0.20977951               ,.x1+9X  
80% >       0.22748071               !sK{:6s  
50% >       0.38667627               zl4Iq+5~6Q  
20% >       0.46553746               xud =(HLl  
10% >       0.50064115                p@YU7_sF^!  
2{| U  
End of Run. `~VV1  
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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 xBl}=M?Qu  

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 n;
/yo~RR  
AQ'~EbH(  
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_RJ  
80% >       0.22748071                 oDrfzm|[Y  
50% >       0.38667627                 OtBVfA:[  
20% >       0.46553746                 zr-HL:js  
10% >       0.50064115 p
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最后这个数值是MTF值呢，还是MTF的公差？ sV%<U-X  
qm{(.b^  
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？？？   OT+=H)/  
-2{NI.-Xd  
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  : 55q!2>Jh.  
90% >       0.20977951                 'K&^y%~py,  
80% >       0.22748071                 m#1>y}  
50% >       0.38667627                 8?LsV<  
20% >       0.46553746                 Oy EOb>  
10% >       0.50064115 diHK  
....... KCP$i@Pjv  

A0X'|4I  
QTr)r;Tro  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   b'q ru~i  
Mode                : Sensitivities )qSjI_qt5  
Sampling            : 2 gy5^JL  
Nominal Criterion   : 0.54403234 n8 UG{. =  
Test Wavelength     : 0.6328 ^AhV1rBB  
gGZ-B<  
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？ qu\cU(H|  
35Ro85j  
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