[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 xy>mM"DOH  
TUr}p aw_  
{eV_+@dT  
K.Z{4x=0  
然后添加了默认公差分析，基本没变 U5=J;[w}N  
f#mpd]e+6  
(FHh,y~v  
XzsK^E0R  
然后运行分析的结果如下： XwMC/]lK<  
|{Q,,<C  
Analysis of Tolerances ^;bkU|(`6  
24fWj?A|^  
File : E:\光学设计资料\zemax练习\f500.ZMX +a;j>hh  
Title: ,;y^|X  
Date : TUE JUN 21 2011 )9O{4PbU!  
l?~h_8&fT  
Units are Millimeters. EzaOg|  
All changes are computed using linear differences. wwz<c5  
HS7!
O  
Paraxial Focus compensation only. -_(!  
.Pi67Kj,  
WARNING: Solves should be removed prior to tolerancing. >xN^#$ng}  
j06DP _9M  
Mnemonics: 4w,}1uNEf  
TFRN: Tolerance on curvature in fringes. (@Bm2gH  
TTHI: Tolerance on thickness. {ig@Iy~DT  
TSDX: Tolerance on surface decentering in x. iy 5  
TSDY: Tolerance on surface decentering in y.
c=gUY~Rl  
TSTX: Tolerance on surface tilt in x (degrees). F 7=-k/k  
TSTY: Tolerance on surface tilt in y (degrees). moGbBkO  
TIRR: Tolerance on irregularity (fringes). gE&f}M-  
TIND: Tolerance on Nd index of refraction. +Muyp]_  
TEDX: Tolerance on element decentering in x. shB(kb{{  
TEDY: Tolerance on element decentering in y. x?kZD~|{)  
TETX: Tolerance on element tilt in x (degrees). #LZ`kSlv4  
TETY: Tolerance on element tilt in y (degrees). jn[a23;G)  
$W2AiE[Wm  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. {BF\G%v;+  
Smp+}-3O  
WARNING: Boundary constraints on compensators will be ignored. c?d#Bj ?  
>,v~,<3 i  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm #3S/TBy,  
Mode                : Sensitivities  >Pu*MD;  
Sampling            : 2 C{D2mSS  
Nominal Criterion   : 0.54403234 LLE~V~j  
Test Wavelength     : 0.6328 )I#kG{z|P;  
d dPJx<  
SCo9[EJ  
Fields: XY Symmetric Angle in degrees qrdI"  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY qhtc?A/0}  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 B@4#y9`5  
z(xvt>  
Sensitivity Analysis: ]1K &U5p  
;Cwn1N9S  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| C9z{8 ;  
Type                      Value      Criterion        Change          Value      Criterion        Change V6L_aee}CK  
Fringe tolerance on surface 1 P+/L,u  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 m
s$o,[  
Change in Focus                :      -0.000000                            0.000000 PIA&s6U  
Fringe tolerance on surface 2 1ysA~2  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 O Rfl v+  
Change in Focus                :       0.000000                            0.000000 Q*wx6Pu8  
Fringe tolerance on surface 3 `XnFc*L 1  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 _eF*8 /z  
Change in Focus                :      -0.000000                            0.000000 kB 2bT}  
Thickness tolerance on surface 1 4Vs;Y&t]  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 @6E[K'5c1  
Change in Focus                :       0.000000                            0.000000 %F7aFvl*  
Thickness tolerance on surface 2 0MOAd!N  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Hq~ 2,#Ue  
Change in Focus                :       0.000000                           -0.000000 0C7"*H0R  
Decenter X tolerance on surfaces 1 through 3 g/E;Oc
FaO  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 [ /D/  
Change in Focus                :       0.000000                            0.000000 ;#+#W+0  
Decenter Y tolerance on surfaces 1 through 3 MLDuo|?  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 dcA0k  
Change in Focus                :       0.000000                            0.000000  4@5<B  
Tilt X tolerance on surfaces 1 through 3 (degrees) ,R)[$n  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 Ut%ie=c  
Change in Focus                :       0.000000                            0.000000 H0Tt(:.&  
Tilt Y tolerance on surfaces 1 through 3 (degrees) _k}b  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 T|m+ULp~  
Change in Focus                :       0.000000                            0.000000 pp:+SoyN  
Decenter X tolerance on surface 1 `8Om*{xg  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 /oI''O%M  
Change in Focus                :       0.000000                            0.000000 P)H%dJ^l  
Decenter Y tolerance on surface 1 ^'h~#7s  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 5t PmrWZ  
Change in Focus                :       0.000000                            0.000000 FUH1Z+9  
Tilt X tolerance on surface (degrees) 1 ILQg@Jl  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ed{9UJWh  
Change in Focus                :       0.000000                            0.000000 H1w;Wb1se  
Tilt Y tolerance on surface (degrees) 1 aCMcu\rd  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Q.N^1?(>k  
Change in Focus                :       0.000000                            0.000000 Y8d%L;b[D  
Decenter X tolerance on surface 2 Q=dR[t>^  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 T4UY%E!0  
Change in Focus                :       0.000000                            0.000000 h$k(|/+  
Decenter Y tolerance on surface 2 E>ev/6ox  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 46
4Z0C  
Change in Focus                :       0.000000                            0.000000 |9g*rO  
Tilt X tolerance on surface (degrees) 2 BYGLYT;Z  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 iZ58;`  
Change in Focus                :       0.000000                            0.000000 w"D"9G  
Tilt Y tolerance on surface (degrees) 2 sC#Ixq'ls7  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 iU3co|q7  
Change in Focus                :       0.000000                            0.000000 o;O_N^_W  
Decenter X tolerance on surface 3 %jkd}D  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 F[+sc Mx!G  
Change in Focus                :       0.000000                            0.000000 VTF),e!  
Decenter Y tolerance on surface 3 BG|Kw)z*KM  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 w#o<qrpHf  
Change in Focus                :       0.000000                            0.000000 :!|xg!|y  
Tilt X tolerance on surface (degrees) 3 EH[?*>+s  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 0}ZuF.  
Change in Focus                :       0.000000                            0.000000 {C3bCVQ]o  
Tilt Y tolerance on surface (degrees) 3 7#RW4ZM  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 XnNK)dUT}  
Change in Focus                :       0.000000                            0.000000 f(3#5288  
Irregularity of surface 1 in fringes ~E)I+$,  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 :s4CWEd  
Change in Focus                :       0.000000                            0.000000 J3$ihH.  
Irregularity of surface 2 in fringes /qz(ra  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 2n@"|\uHD  
Change in Focus                :       0.000000                            0.000000 E1>3[3  
Irregularity of surface 3 in fringes UqAvFCy  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 n"Ev25%  
Change in Focus                :       0.000000                            0.000000 F'"-4YV>&  
Index tolerance on surface 1 m{1By/
U  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 ]s u
\[?l  
Change in Focus                :       0.000000                            0.000000 
ve>8vw2  
Index tolerance on surface 2 jHFdDw|N`  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 1mB6rp  
Change in Focus                :       0.000000                           -0.000000 h\yYg'CC  
*"E]^wCn  
Worst offenders: . E.OBn  
Type                      Value      Criterion        Change h rZ\ O?j  
TSTY   2            -0.20000000     0.35349910    -0.19053324 s*VZLKO  
TSTY   2             0.20000000     0.35349910    -0.19053324 `W-:@?PmQx  
TSTX   2            -0.20000000     0.35349910    -0.19053324 6h5*b8LxA  
TSTX   2             0.20000000     0.35349910    -0.19053324 tvg7mU]l  
TSTY   1            -0.20000000     0.42678383    -0.11724851 `T mIrc  
TSTY   1             0.20000000     0.42678383    -0.11724851 l\S..B +  
TSTX   1            -0.20000000     0.42678383    -0.11724851 10a=[\ Q  
TSTX   1             0.20000000     0.42678383    -0.11724851 b)df V=  
TSTY   3            -0.20000000     0.42861670    -0.11541563 \^_F>M  
TSTY   3             0.20000000     0.42861670    -0.11541563 <|.M]]}j  
63at lq  
Estimated Performance Changes based upon Root-Sum-Square method: ,CCIg9Pt  
Nominal MTF                 :     0.54403234 4u /?..L.  
Estimated change            :    -0.36299231 > sUk6Z~  
Estimated MTF               :     0.18104003 F35e/YfG  
&^z~wJ,]  
Compensator Statistics: )`L!eN  
Change in back focus: r*kk/$,2  
Minimum            :        -0.000000 t4,6`d?C  
Maximum            :         0.000000 /+3|tb  
Mean               :        -0.000000 JNZKzyJ9K  
Standard Deviation :         0.000000 Q:%gJ6pa  
}F^c*xt[  
Monte Carlo Analysis: %T88K}?=  
Number of trials: 20 -]N/P{=L  
9<xe%V=ki  
Initial Statistics: Normal Distribution Qx {/izc  
hLBX,r)u  
  Trial       Criterion        Change H1q>UU:  
      1     0.42804416    -0.11598818 thkL<  
Change in Focus                :      -0.400171  vH`u  
      2     0.54384387    -0.00018847 51L:%Af  
Change in Focus                :       1.018470 ^D\#*pIO  
      3     0.44510003    -0.09893230 G66vzwO  
Change in Focus                :      -0.601922 k8w8I$QEM  
      4     0.18154684    -0.36248550 &ts!D!Hj  
Change in Focus                :       0.920681 }bHdU]$}  
      5     0.28665820    -0.25737414 f\Pd#$3  
Change in Focus                :       1.253875 q7X/"Dfx  
      6     0.21263372    -0.33139862 {y :/9  
Change in Focus                :      -0.903878 ~uV.jh  
      7     0.40051424    -0.14351809 A/GEDG ?  
Change in Focus                :      -1.354815 n|{x\@VeF  
      8     0.48754161    -0.05649072 'os-+m@  
Change in Focus                :       0.215922 "&7v.-Yk(  
      9     0.40357468    -0.14045766 .O~)zMx  
Change in Focus                :       0.281783 j_Dx4*vg  
     10     0.26315315    -0.28087919 IUI>/87u  
Change in Focus                :      -1.048393 3vmZB2QG  
     11     0.26120585    -0.28282649 {L3lQ8Z  
Change in Focus                :       1.017611 rjfQ\W;}U  
     12     0.24033815    -0.30369419 WtdWD_\%Y\  
Change in Focus                :      -0.109292 cl^tX%  
     13     0.37164046    -0.17239188 w!tQU9+*  
Change in Focus                :      -0.692430 b[H& vp  
     14     0.48597489    -0.05805744 )PR{ia64;<  
Change in Focus                :      -0.662040 aQkgkV;~  
     15     0.21462327    -0.32940907 L{osh0  
Change in Focus                :       1.611296 \9<aCJxN  
     16     0.43378226    -0.11025008 /G\-v2iD  
Change in Focus                :      -0.640081 O'o`

  
     17     0.39321881    -0.15081353 t[7YMk  
Change in Focus                :       0.914906 m &s0Ub  
     18     0.20692530    -0.33710703 :MpIx&  
Change in Focus                :       0.801607 o9>r -  
     19     0.51374068    -0.03029165 nB"q   
Change in Focus                :       0.947293 P|c79  
     20     0.38013374    -0.16389860 389T6sP]  
Change in Focus                :       0.667010 X8F _Mb*  
Fj-mo>"  
Number of traceable Monte Carlo files generated: 20 91`biVZfA  
0l{').!_  
Nominal     0.54403234 7*uG9iX  
Best        0.54384387    Trial     2 GIt;Y  
Worst       0.18154684    Trial     4 <~<I K=n  
Mean        0.35770970 w'#VN|;;!  
Std Dev     0.11156454 Y6W3WPs(  
u,*$n'l]  
Gq$9he<  
Compensator Statistics: ZZ)bTLu  
Change in back focus: 6^s]2mMfk  
Minimum            :        -1.354815 (S=::ODU  
Maximum            :         1.611296 TJ ;4QL  
Mean               :         0.161872 )|q,RAn  
Standard Deviation :         0.869664 gjk=`lU  
>rB7ms/@E  
90% >       0.20977951               EAqTXB@XU  
80% >       0.22748071               g*AnrQ}P  
50% >       0.38667627               vx5;}[Bhm  
20% >       0.46553746               n)8bkcZCp+  
10% >       0.50064115                JOx75}  
%]nLCoQh  
End of Run. Cx} Yp-  
;yx+BaG~?  
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 )jn|+M  
l)Q,*i  
8n,i5>!d  
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 W#8qhmt  
-!I.:97 N  
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                 LZX-am`%  
80% >       0.22748071                 ]W5s!T_  
50% >       0.38667627                 2j=3i
@  
20% >       0.46553746                 h%E25in  
10% >       0.50064115 )qzJu*cQ  
b0rC\^x  
最后这个数值是MTF值呢，还是MTF的公差？ n?YGXW/  
3 ^{U:"N0  
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？？？   +4GuA0N6  
4Qz  
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  : riFE.;  
90% >       0.20977951                 nFw&vR/q  
80% >       0.22748071                 dWI/X  
50% >       0.38667627                 S4~^HvMG[Y  
20% >       0.46553746                 XLEA|#  
10% >       0.50064115 ;#~rd8Z52  
....... je_77G(F  

Fe"0Hp+  
n." j0kc7=  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   KhXW
5hS1  
Mode                : Sensitivities Z|'tw^0e5  
Sampling            : 2 W5J"#^kdF8  
Nominal Criterion   : 0.54403234 *AZC{jP  
Test Wavelength     : 0.6328 &&_
W,id`  
2s|[!:L5  
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？ xjR/K&[m  
CIO&VK  
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