[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 F\KjEl0  
c;Pe/d  

图片:1.JPG

"s0)rqf<  
(l^3Z3zf&  
然后添加了默认公差分析，基本没变 49GkPy#]L=  
Br1&8L-|%  

图片:2.jpg

5:Z0Pt  
47+&L  
然后运行分析的结果如下： +B B@OW  
lr>oYS0  
Analysis of Tolerances BJ$9vbhZN  
dCi?SIN  
File : E:\光学设计资料\zemax练习\f500.ZMX I,>-tGK  
Title: 6Ypc`  
Date : TUE JUN 21 2011
8 OY3A  
*|%@6I(  
Units are Millimeters. ORe(]I`Z  
All changes are computed using linear differences. 52:HNA\E/  
A9I{2qW9+Z  
Paraxial Focus compensation only. ^1iSn)&  
$HHs^tW  
WARNING: Solves should be removed prior to tolerancing. DFZkh^PFd  
{XR6>
]  
Mnemonics: qE&v ;  
TFRN: Tolerance on curvature in fringes. y"bByd|6  
TTHI: Tolerance on thickness. >`Y.+4mE  
TSDX: Tolerance on surface decentering in x. C7lH]`W|/  
TSDY: Tolerance on surface decentering in y. <"{qk2LS1  
TSTX: Tolerance on surface tilt in x (degrees). K1mPr^3rC  
TSTY: Tolerance on surface tilt in y (degrees). ]R h#g5X  
TIRR: Tolerance on irregularity (fringes). gw#5jW\  
TIND: Tolerance on Nd index of refraction. Cn'(<bl  
TEDX: Tolerance on element decentering in x. Xe6w|  
TEDY: Tolerance on element decentering in y. mHV%I@`Y6  
TETX: Tolerance on element tilt in x (degrees). R "n5  
TETY: Tolerance on element tilt in y (degrees). l~c@^!  
{@6=Q 6L  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. :o0JY= 5  
2`7==?  
WARNING: Boundary constraints on compensators will be ignored. 5]KW^sL  
diJLZikk  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm H$=e -L`@  
Mode                : Sensitivities d4u})  
Sampling            : 2 e-:yb^  
Nominal Criterion   : 0.54403234 u$DHVRrF<  
Test Wavelength     : 0.6328 zL$@`Eh-KP  
D^yRaP*|7  
nygbt<;?  
Fields: XY Symmetric Angle in degrees {P*pkc  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY <;vbsksZeH  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 /1"(cQ%?  
'Y*E<6:  
Sensitivity Analysis: @Z*W  
Bp_$.!Qy  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| ^T*?>%`  
Type                      Value      Criterion        Change          Value      Criterion        Change /(u}KMR!f  
Fringe tolerance on surface 1 `IP/d  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 'FqQzx"r  
Change in Focus                :      -0.000000                            0.000000 i!J8 d"  
Fringe tolerance on surface 2 rf $QxJ  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 5:pM4J  
Change in Focus                :       0.000000                            0.000000 /xsF90c\h  
Fringe tolerance on surface 3 "S8uoSF`>  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 2)G %)'  
Change in Focus                :      -0.000000                            0.000000 S?>HD|Z  
Thickness tolerance on surface 1 'Q|M'5'  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 s3~lT.  
Change in Focus                :       0.000000                            0.000000 #*QO3y~ZM  
Thickness tolerance on surface 2 (KFCs^x7wG  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 gRCdY8GH  
Change in Focus                :       0.000000                           -0.000000 *^g:P^4  
Decenter X tolerance on surfaces 1 through 3 4lr(,nPRD  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 l n{e1':$"  
Change in Focus                :       0.000000                            0.000000 4]yOF_8h  
Decenter Y tolerance on surfaces 1 through 3 J2::'Hw*s  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 SQ44  
Change in Focus                :       0.000000                            0.000000 wP6Fl L  
Tilt X tolerance on surfaces 1 through 3 (degrees) A0o-:n Fu  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 !Fca~31R'  
Change in Focus                :       0.000000                            0.000000 '10oK {m$  
Tilt Y tolerance on surfaces 1 through 3 (degrees) s8ywKTR-  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 iL7DRQ1  
Change in Focus                :       0.000000                            0.000000 n!NS(.o  
Decenter X tolerance on surface 1 K?[q%W]%  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 kO,zZF&  
Change in Focus                :       0.000000                            0.000000 J#w J4!  
Decenter Y tolerance on surface 1 /RNIIY~w  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 U}6B*Xx'  
Change in Focus                :       0.000000                            0.000000 zDw5]*R  
Tilt X tolerance on surface (degrees) 1 v'U{/ ,x  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 S0B|#O%Z  
Change in Focus                :       0.000000                            0.000000 \SN&G`o<  
Tilt Y tolerance on surface (degrees) 1 ruc++@J@  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 GNgKo]u  
Change in Focus                :       0.000000                            0.000000 R@/"B8H  
Decenter X tolerance on surface 2 [h^2Y&Au5  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 OjFLPGRCh  
Change in Focus                :       0.000000                            0.000000 8D>n1b(H  
Decenter Y tolerance on surface 2 !B\R''J5  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 R%{a1r>9h  
Change in Focus                :       0.000000                            0.000000 v9:9E|,U+  
Tilt X tolerance on surface (degrees) 2 ?\vh9  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 {{B%f.  
Change in Focus                :       0.000000                            0.000000 P#RR9>Q  
Tilt Y tolerance on surface (degrees) 2 Ka[t75~;  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 SW*"\X;  
Change in Focus                :       0.000000                            0.000000 OHeT,@(mh  
Decenter X tolerance on surface 3 E8pB;\Z(  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 MXw hxk#E  
Change in Focus                :       0.000000                            0.000000 v{
(^1cX  
Decenter Y tolerance on surface 3 *G{^|z  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~tBYIkvWT  
Change in Focus                :       0.000000                            0.000000 /LvRP yj@  
Tilt X tolerance on surface (degrees) 3 pk^K:Xs}  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 o$#G0}yn  
Change in Focus                :       0.000000                            0.000000 +wEac g>>E  
Tilt Y tolerance on surface (degrees) 3 +?:7O=Y  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 P+s!|7'  
Change in Focus                :       0.000000                            0.000000 uW30ep'  
Irregularity of surface 1 in fringes 7[> 6i  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 t/cY=Wp  
Change in Focus                :       0.000000                            0.000000 U&Wt%U{  
Irregularity of surface 2 in fringes AfX}y+Ah  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 jF0jkj1&/[  
Change in Focus                :       0.000000                            0.000000 i(AT8Bo2  
Irregularity of surface 3 in fringes L\@I*QP  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 eM$
sv9?  
Change in Focus                :       0.000000                            0.000000 +Af"f' )  
Index tolerance on surface 1 z2g3FUTX)b  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 eO?p*"p"F  
Change in Focus                :       0.000000                            0.000000 U^Q:Y}^  
Index tolerance on surface 2 o=50>$5jlS  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 # WAZ9,t  
Change in Focus                :       0.000000                           -0.000000 XZ
sz/#  
vgsJeV`}I  
Worst offenders: hEBY8=gK  
Type                      Value      Criterion        Change JT-J#Ag  
TSTY   2            -0.20000000     0.35349910    -0.19053324 Kla'lCZ  
TSTY   2             0.20000000     0.35349910    -0.19053324  f4Xk,1Is  
TSTX   2            -0.20000000     0.35349910    -0.19053324 4kBaB  
TSTX   2             0.20000000     0.35349910    -0.19053324 te3}d'9&|  
TSTY   1            -0.20000000     0.42678383    -0.11724851 4)@mSSfn.  
TSTY   1             0.20000000     0.42678383    -0.11724851 Q4+gAS9  
TSTX   1            -0.20000000     0.42678383    -0.11724851 iPd[l{85Z  
TSTX   1             0.20000000     0.42678383    -0.11724851 7JEbH?lEN  
TSTY   3            -0.20000000     0.42861670    -0.11541563 -=~| ."O  
TSTY   3             0.20000000     0.42861670    -0.11541563 n/SwP  
_a6[{_Pc  
Estimated Performance Changes based upon Root-Sum-Square method: ZUoxMm  
Nominal MTF                 :     0.54403234 1guJG_;z  
Estimated change            :    -0.36299231 BI3@|,._N  
Estimated MTF               :     0.18104003 bYEy<7)x  
H5Z$*4%G  
Compensator Statistics: [H6hyG~  
Change in back focus: v6>_ j L  
Minimum            :        -0.000000 L3@82yPo!  
Maximum            :         0.000000 FFu9&8Y  
Mean               :        -0.000000 j@SQ~AS  
Standard Deviation :         0.000000 +y&Tf#.V/A  
n2)@S0{  
Monte Carlo Analysis: gj*+\3KO@a  
Number of trials: 20 E`?3PA8  
.^h#_[dp  
Initial Statistics: Normal Distribution f33l$pOp  
}+C2
I  
  Trial       Criterion        Change 9%B\/&f  
      1     0.42804416    -0.11598818 >'&p>Ad)  
Change in Focus                :      -0.400171 ]Q>.HH  
      2     0.54384387    -0.00018847 uTKD 4yig  
Change in Focus                :       1.018470 hw= F
t4L  
      3     0.44510003    -0.09893230 2zs73:z  
Change in Focus                :      -0.601922 P_*" dza  
      4     0.18154684    -0.36248550 BT}!W`  
Change in Focus                :       0.920681 >pp5;h8!  
      5     0.28665820    -0.25737414 j$?{\iXZ  
Change in Focus                :       1.253875 7f0lQ  
      6     0.21263372    -0.33139862 DXJ`oh  
Change in Focus                :      -0.903878 Y8-86 *zC  
      7     0.40051424    -0.14351809 ;\14b?TUH  
Change in Focus                :      -1.354815 FVaQEMZ^  
      8     0.48754161    -0.05649072 J&.{7YF  
Change in Focus                :       0.215922 5hQE4/hH  
      9     0.40357468    -0.14045766 -o$QS,  
Change in Focus                :       0.281783 M$/|)U'W  
     10     0.26315315    -0.28087919 u>kN1kQ8  
Change in Focus                :      -1.048393 56zL"TF`  
     11     0.26120585    -0.28282649 ;/r1}tl+3>  
Change in Focus                :       1.017611 $5ak_@AC  
     12     0.24033815    -0.30369419 MP_ ~<Q  
Change in Focus                :      -0.109292 HY&aV2|A1  
     13     0.37164046    -0.17239188 __|+w<]  
Change in Focus                :      -0.692430 i}.&0Fp  
     14     0.48597489    -0.05805744 y5*Z3"<  
Change in Focus                :      -0.662040  SL#0kc0x  
     15     0.21462327    -0.32940907 &#!4XOyB  
Change in Focus                :       1.611296 =kJ,%\E`  
     16     0.43378226    -0.11025008 60J;sGW  
Change in Focus                :      -0.640081 18+)`M-5o  
     17     0.39321881    -0.15081353 `(_s|-$  
Change in Focus                :       0.914906 E\as@pqo\p  
     18     0.20692530    -0.33710703 WtG~('g>&  
Change in Focus                :       0.801607 "4riSxEyF  
     19     0.51374068    -0.03029165 }o(zj=7  
Change in Focus                :       0.947293 Ju96#v+:  
     20     0.38013374    -0.16389860 /s@oZ{h  
Change in Focus                :       0.667010 VUPXO  
RS)tO0  
Number of traceable Monte Carlo files generated: 20 {
2=jAz'?  
G6/p1xy>o:  
Nominal     0.54403234 {`LU+  
Best        0.54384387    Trial     2 n `&/D  
Worst       0.18154684    Trial     4 .1KhBgy^K  
Mean        0.35770970 [d(U38BI  
Std Dev     0.11156454 8Kg n"M3  
ADDSCY=,  
r'^Hg/Jzt  
Compensator Statistics: }1Gv)l7  
Change in back focus: Z>)Bp/-  
Minimum            :        -1.354815 jQ2Ot<  
Maximum            :         1.611296 e1%/26\  
Mean               :         0.161872 /Z~<CbKKl  
Standard Deviation :         0.869664 UTH*bL5/J2  
F`gi_;c  
90% >       0.20977951               x3 q]I8q  
80% >       0.22748071               H*ow\ Ct  
50% >       0.38667627               "D63I|O)  
20% >       0.46553746               ]s'Q_wh_-v  
10% >       0.50064115                L ^q""[  
qU%/W|LY  
End of Run. 7gj4j^a^]{  
*5%d XixN  
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 ABQ('#78  

图片:3.JPG

`o=q%$f#k~  
7 n8"/0kc:  
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 b\yXbyjZ3.  
>,F bX8Zz  
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                 $ `ov4W  
80% >       0.22748071                 Bmr>n6|  
50% >       0.38667627                 xN5)  
20% >       0.46553746                 *=8JIs A>!  
10% >       0.50064115 ff]6aR/ UQ  
BF\XEm?!  
最后这个数值是MTF值呢，还是MTF的公差？ ZInpMp  
K'L^;z6  
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？？？   &5\iM^
 
PQy4{0 _  
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  : 0g +7uGp:  
90% >       0.20977951                 AS!?q  
80% >       0.22748071                 &b.=M>\9Q  
50% >       0.38667627                 cA2V2S)  
20% >       0.46553746                 n D0K).=Q  
10% >       0.50064115 ?8I?'\F;  
....... fFMlDg[];  

6w*dKInG[-  
N,`$M.|?  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   b[
sx_b  
Mode                : Sensitivities Bgn
&:T8<  
Sampling            : 2 &x=.$76  
Nominal Criterion   : 0.54403234 v6[!o<@"a  
Test Wavelength     : 0.6328 8{|8G-Mi  
0QBiC]9  
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？ 3
RiWZN  
heltgRt  
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