[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 r!C#PiT}I  
%V;B{?>9zB  

图片:1.JPG

d) i64"  
+#@)C?G,TF  
然后添加了默认公差分析，基本没变 ?ypX``3#s7  
GB&^<@  

图片:2.jpg

WUfPLY_c(  
pf@H;QS`  
然后运行分析的结果如下： -qW[.B  
FbU98n+z  
Analysis of Tolerances EG;y@\]  
RASPOc/]   
File : E:\光学设计资料\zemax练习\f500.ZMX Smc=-M}  
Title: Z!eW_""wp  
Date : TUE JUN 21 2011 /$Ca}>  
YQ _]Jv k  
Units are Millimeters. I|eYeJ3  
All changes are computed using linear differences. XhEJF !  
,)beK*Iw  
Paraxial Focus compensation only. }\Ri:&?  
6-6ha7]s  
WARNING: Solves should be removed prior to tolerancing. #*|Gp_l+%  
w;=g$Bn  
Mnemonics: T-)lnrs^  
TFRN: Tolerance on curvature in fringes. !=SBeq  
TTHI: Tolerance on thickness. *74VrAo  
TSDX: Tolerance on surface decentering in x. ekV|a1)  
TSDY: Tolerance on surface decentering in y. mYRsM s  
TSTX: Tolerance on surface tilt in x (degrees). [PP&}.k4"  
TSTY: Tolerance on surface tilt in y (degrees). @en*JxIM  
TIRR: Tolerance on irregularity (fringes). 'OjsV

$_  
TIND: Tolerance on Nd index of refraction. !Sj
0!\  
TEDX: Tolerance on element decentering in x. (5\VOCT>4%  
TEDY: Tolerance on element decentering in y. }Y
`D^z~  
TETX: Tolerance on element tilt in x (degrees). MIx,#]C&  
TETY: Tolerance on element tilt in y (degrees). P g.j]  
~[
ZRE @  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. .tQeOZW'  
4mM?RGWv
 
WARNING: Boundary constraints on compensators will be ignored. lFT` WO  
v
iXt]
0  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm vp2s)W8W  
Mode                : Sensitivities Uz$.sa  
Sampling            : 2 )0UXTyw^  
Nominal Criterion   : 0.54403234 *i,@d&J y]  
Test Wavelength     : 0.6328 BH3%dh:9  
EgB$y"fs  
e,8[fp-7  
Fields: XY Symmetric Angle in degrees E
f2i#BoZ  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY T6^H%;G  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 !E.CpfaC  
'J1
!P:tJ  
Sensitivity Analysis: cD JeYduK  
e?yrx6  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| +JlPQ~5  
Type                      Value      Criterion        Change          Value      Criterion        Change ~`Rb"Zn  
Fringe tolerance on surface 1 4uy:sCm
u  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 D@?Tq,
= [  
Change in Focus                :      -0.000000                            0.000000 , aJC7'(  
Fringe tolerance on surface 2 zbgH}6b  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 efXiZ  
Change in Focus                :       0.000000                            0.000000 `&w{-om\  
Fringe tolerance on surface 3 `x:8m?q05  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 Rn9e#_Az  
Change in Focus                :      -0.000000                            0.000000 :c}"a(|  
Thickness tolerance on surface 1 Tg_#z  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 155
vY  
Change in Focus                :       0.000000                            0.000000 peD7X:K\s  
Thickness tolerance on surface 2 7 <<`9,  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 A(}D76o_  
Change in Focus                :       0.000000                           -0.000000 G;he:Bf  
Decenter X tolerance on surfaces 1 through 3 5=hMTztf!!  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Boj#r ,x  
Change in Focus                :       0.000000                            0.000000 5[0W+W  
Decenter Y tolerance on surfaces 1 through 3 kA4bv}  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 @O9wit.  
Change in Focus                :       0.000000                            0.000000 :D:Y-cG*n<  
Tilt X tolerance on surfaces 1 through 3 (degrees) YS0^!7u  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 PUbfQg  
Change in Focus                :       0.000000                            0.000000 Qy7pM8~h  
Tilt Y tolerance on surfaces 1 through 3 (degrees) &1Cif$Y4w  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 _X)`S"EsJ  
Change in Focus                :       0.000000                            0.000000 . ytxe!O  
Decenter X tolerance on surface 1 T o$D[-  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 hEMS  
Change in Focus                :       0.000000                            0.000000 k, >*.Yoh  
Decenter Y tolerance on surface 1 b"pN;v  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 6(8zt"E  
Change in Focus                :       0.000000                            0.000000 ]QSQr*  
Tilt X tolerance on surface (degrees) 1 9+"ISXS  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 B+4WnR1%T  
Change in Focus                :       0.000000                            0.000000 Nz;f| 2h  
Tilt Y tolerance on surface (degrees) 1 w[]\%`69}Z  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 S5/p3;O\c  
Change in Focus                :       0.000000                            0.000000 MHQM'  
Decenter X tolerance on surface 2 h pKrP  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 &6&$vF65c  
Change in Focus                :       0.000000                            0.000000 e!N%  
Decenter Y tolerance on surface 2 ZKF #(G  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 63HtZ=hO7  
Change in Focus                :       0.000000                            0.000000 BT|n+Y[  
Tilt X tolerance on surface (degrees) 2 on.m '-s  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 (Qd@Q,@(s  
Change in Focus                :       0.000000                            0.000000 W(o#2;{ln  
Tilt Y tolerance on surface (degrees) 2 O&}`R5Y;  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  Q5
 =  
Change in Focus                :       0.000000                            0.000000 +ux170Cd3  
Decenter X tolerance on surface 3 (sp{.bU  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 U[G5<&Z
^  
Change in Focus                :       0.000000                            0.000000 q'KXn0IY#  
Decenter Y tolerance on surface 3 xp%LXxj  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 jhB+ ]  
Change in Focus                :       0.000000                            0.000000 icN#8\E  
Tilt X tolerance on surface (degrees) 3 C
ig!3  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 H,Yrk(O-  
Change in Focus                :       0.000000                            0.000000 m+3]RIr&A  
Tilt Y tolerance on surface (degrees) 3 U.c~l,5%"  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563  U92?e}=]  
Change in Focus                :       0.000000                            0.000000 C)BVsHT4  
Irregularity of surface 1 in fringes H+npe'm_Z  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 QRHM#v S  
Change in Focus                :       0.000000                            0.000000 L8?;A9pc()  
Irregularity of surface 2 in fringes g?{7DI`  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 kb[+II  
Change in Focus                :       0.000000                            0.000000 e$N1m:1*  
Irregularity of surface 3 in fringes l 9bg  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 >K*TgG6!X  
Change in Focus                :       0.000000                            0.000000 Rf TG 5E)  
Index tolerance on surface 1 Dpkc9~z  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 xM13OoU  
Change in Focus                :       0.000000                            0.000000 >x
8~?)7z  
Index tolerance on surface 2 V`xE&BI  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 9 =D13s(C  
Change in Focus                :       0.000000                           -0.000000 O5dB
I_  
%h}3}p#4  
Worst offenders: nmoC(| r  
Type                      Value      Criterion        Change Hh'o:j(^  
TSTY   2            -0.20000000     0.35349910    -0.19053324 @!mjjeG+1  
TSTY   2             0.20000000     0.35349910    -0.19053324 -~_;9[uV  
TSTX   2            -0.20000000     0.35349910    -0.19053324 T
;#:Y  
TSTX   2             0.20000000     0.35349910    -0.19053324 @T)>akEOt  
TSTY   1            -0.20000000     0.42678383    -0.11724851 Qk8YR5K   
TSTY   1             0.20000000     0.42678383    -0.11724851 Nrzg>WQa  
TSTX   1            -0.20000000     0.42678383    -0.11724851 }0 =gP?.kE  
TSTX   1             0.20000000     0.42678383    -0.11724851 G$1gk^G's  
TSTY   3            -0.20000000     0.42861670    -0.11541563 -z'6.IcO  
TSTY   3             0.20000000     0.42861670    -0.11541563 `g'z6~c7n  
3$PGLM  
Estimated Performance Changes based upon Root-Sum-Square method: 7%yP5c
B  
Nominal MTF                 :     0.54403234 |3=tF"h  
Estimated change            :    -0.36299231 @pV&{Vp  
Estimated MTF               :     0.18104003 VV"1IR  
28O3N;a  
Compensator Statistics: w"OeS;#e:  
Change in back focus: *wV`7\@  
Minimum            :        -0.000000 /,3:<I  
Maximum            :         0.000000 ?}<Wmy2A  
Mean               :        -0.000000 rQ&F Gb  
Standard Deviation :         0.000000 Kbcr-89Gv~  
 &W? hCr  
Monte Carlo Analysis: '/@i} digf  
Number of trials: 20 q@}tv=}  

;w^{PZBg  
Initial Statistics: Normal Distribution J#Agk^Y 5  
T9]:, z  
  Trial       Criterion        Change J(kC  
      1     0.42804416    -0.11598818 /^b=| +Do  
Change in Focus                :      -0.400171 Q*]y=Za#:  
      2     0.54384387    -0.00018847 Bu#\W  
Change in Focus                :       1.018470 |1UJKJwX  
      3     0.44510003    -0.09893230 Rs53R$PIR  
Change in Focus                :      -0.601922 g BV66L  
      4     0.18154684    -0.36248550 }bYk#6KX  
Change in Focus                :       0.920681 CxJH)H$  
      5     0.28665820    -0.25737414 RaAvPIJa |  
Change in Focus                :       1.253875 \O+Hmi^  
      6     0.21263372    -0.33139862 6adXE  
Change in Focus                :      -0.903878 D]hwG0Chd  
      7     0.40051424    -0.14351809 *+>Q
KR7  
Change in Focus                :      -1.354815 *Zz hN]1  
      8     0.48754161    -0.05649072 ){"-J&@?  
Change in Focus                :       0.215922 ~4u[\&Sh  
      9     0.40357468    -0.14045766 @H|3e@5([  
Change in Focus                :       0.281783 9pq-"?vHY0  
     10     0.26315315    -0.28087919 jmva0K},SE  
Change in Focus                :      -1.048393 H6i;MQ  
     11     0.26120585    -0.28282649 kT4Oal+4  
Change in Focus                :       1.017611 ]L9$JTGF`w  
     12     0.24033815    -0.30369419 CYN")J8V  
Change in Focus                :      -0.109292
Uf<IXx&;  
     13     0.37164046    -0.17239188 H(ds  
Change in Focus                :      -0.692430 BYXMbx  
     14     0.48597489    -0.05805744 P{o//M  
Change in Focus                :      -0.662040 mY!&*nYn|  
     15     0.21462327    -0.32940907 K)TMr"j\  
Change in Focus                :       1.611296 IGcYPL\&  
     16     0.43378226    -0.11025008 ZqJyuTPv  
Change in Focus                :      -0.640081 ^26}8vt  
     17     0.39321881    -0.15081353 (
-esUOB.  
Change in Focus                :       0.914906 qb>mUS  
     18     0.20692530    -0.33710703 nVv=smVOt  
Change in Focus                :       0.801607 ec"+Il  
     19     0.51374068    -0.03029165 75RQ\_zDu  
Change in Focus                :       0.947293 992cy2,Fb  
     20     0.38013374    -0.16389860 p^9u8T4l1  
Change in Focus                :       0.667010 TZ]o6Bb  
y<*/\]t9L[  
Number of traceable Monte Carlo files generated: 20 Xjnv8{
X  
Qj(|uGqm3  
Nominal     0.54403234 46M?Gfd,X  
Best        0.54384387    Trial     2 d9yfSZ  
Worst       0.18154684    Trial     4 av4g/7=  
Mean        0.35770970 1bpjj'2%x  
Std Dev     0.11156454 B&4NdL/  
rd!4u14  
l]KxUkA+  
Compensator Statistics: Nm,9xq  
Change in back focus:
[5$Y>Tr!  
Minimum            :        -1.354815 aW7)}"j4  
Maximum            :         1.611296 9zD^4j7  
Mean               :         0.161872 6YpP/ K  
Standard Deviation :         0.869664 TaE&8;H#N  
,5/zTLd   
90% >       0.20977951               o~={M7m  
80% >       0.22748071               J#jx)K!  
50% >       0.38667627               Q:sw*7"F  
20% >       0.46553746               o+ 0"@B  
10% >       0.50064115                [{cMEV&  
qo62!q  
End of Run. j3)fmlA  
\1cJ?/$_Of  
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 R[_UbN 28  

图片:3.JPG

0ntf%#2{  
j SXVLyz  
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 |)IS[:X  
oJbMUEQQq  
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                 >^q7:x\  
80% >       0.22748071                 SWrP0Qjc  
50% >       0.38667627                 `bx}!;{lx  
20% >       0.46553746                 z c7P2@  
10% >       0.50064115 0.}WZAYy~  
]E!b&  
最后这个数值是MTF值呢，还是MTF的公差？ 01/yog
 
FyV)Nmc%t  
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？？？   Mp`2[S@$  
Bp>Z?"hTe  
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  : _d`)N  
90% >       0.20977951                 []I_r=  
80% >       0.22748071                 zlhHSyK  
50% >       0.38667627                 .WV5Gf)  
20% >       0.46553746                 5tG\5  
10% >       0.50064115 b\9MM  
....... #vs=yR/tn{  

(G<fvl!~  
B65"jy  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   IL&;2%  
Mode                : Sensitivities __OH gp 1  
Sampling            : 2 W0qn$H  
Nominal Criterion   : 0.54403234 Hph$Z1{  
Test Wavelength     : 0.6328 (BG wBL  
X7Z=@d(
 
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？ I\WBPI  
l`(pV ;{W  
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