[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 >NN|vj  
?wps_XU  
[|2uu."$  
YZCPS6PuE  
然后添加了默认公差分析，基本没变 N1UE u,j  
:5@cjj  
qFV=Pk  
WT!8.M;Kv  
然后运行分析的结果如下： &50K
n[  
C"/
]X  
Analysis of Tolerances j=)%
~@  
(~
TP  
File : E:\光学设计资料\zemax练习\f500.ZMX }Kq5!XJV9C  
Title: Uq/(xh,t5  
Date : TUE JUN 21 2011 @T1/S&F=  
{Gs&u>>R"^  
Units are Millimeters. #3$U&|`  
All changes are computed using linear differences. YE5v~2  
Dd*T5A?  
Paraxial Focus compensation only. q+32|k>)  
Ifu$p]~z$  
WARNING: Solves should be removed prior to tolerancing. R,A|"Q  
-o F#a 8  
Mnemonics: "2CiW6X[M  
TFRN: Tolerance on curvature in fringes. M~7?m/Wj  
TTHI: Tolerance on thickness. "t8mQ;n  
TSDX: Tolerance on surface decentering in x. )%C482GO-  
TSDY: Tolerance on surface decentering in y. DRi!WWivn  
TSTX: Tolerance on surface tilt in x (degrees).
B|%=<1?  
TSTY: Tolerance on surface tilt in y (degrees). tqrvcnQr^  
TIRR: Tolerance on irregularity (fringes). BoP%f'0N  
TIND: Tolerance on Nd index of refraction. _3T*[s;H  
TEDX: Tolerance on element decentering in x. T}2a~  
TEDY: Tolerance on element decentering in y. ']f]:X;6w  
TETX: Tolerance on element tilt in x (degrees). uavts9v<  
TETY: Tolerance on element tilt in y (degrees). w"-bO ~5h  
ZzI^*Nyg  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ;4F[*VF!w  
P-No;/!B#  
WARNING: Boundary constraints on compensators will be ignored. `R8~H7{I6  
(H+'sf^h  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm n<lU;  
Mode                : Sensitivities m |,ocz  
Sampling            : 2 Z|d_G}  
Nominal Criterion   : 0.54403234 D}!U?]la&  
Test Wavelength     : 0.6328 e?L$RY,7  
,y2ur2  
,D3q8?j  
Fields: XY Symmetric Angle in degrees X!,Ngmw.  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY D2>EG~xWq  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 a|5GC pp  
"6pjkEt4  
Sensitivity Analysis: Qkqn~>  
Dw[w%
uz  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| >g93Bj*  
Type                      Value      Criterion        Change          Value      Criterion        Change BD=;4SLT  
Fringe tolerance on surface 1 |fTQ\q]W  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 &.<{c `-  
Change in Focus                :      -0.000000                            0.000000 wC=IN  
Fringe tolerance on surface 2 % C6 H(  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 xvp{F9~qT  
Change in Focus                :       0.000000                            0.000000 .1|'9@]lj4  
Fringe tolerance on surface 3 $j{ynh)^  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 66)@4 3V  
Change in Focus                :      -0.000000                            0.000000 Os@ofnC  
Thickness tolerance on surface 1 ZQl[h7c/N  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 1Q
?hskL  
Change in Focus                :       0.000000                            0.000000 c!Pi)  
Thickness tolerance on surface 2 7GK| A{r  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 "VcGr#zW  
Change in Focus                :       0.000000                           -0.000000 [(ty{  
Decenter X tolerance on surfaces 1 through 3 g-}Vu1w0{6  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Q:-H UbB  
Change in Focus                :       0.000000                            0.000000 S*#y7YKI  
Decenter Y tolerance on surfaces 1 through 3 0yAvAx  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 {,s:vPoiA  
Change in Focus                :       0.000000                            0.000000 b;m6m4i'f{  
Tilt X tolerance on surfaces 1 through 3 (degrees) 2[M:WZ.1  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 mL6/NSSz  
Change in Focus                :       0.000000                            0.000000 Q `E{Oo,  
Tilt Y tolerance on surfaces 1 through 3 (degrees) eX_}KH-Q  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 x:l`e:`y9  
Change in Focus                :       0.000000                            0.000000 h.2!d0j]  
Decenter X tolerance on surface 1 IUc!nxF#  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 L1rov  
Change in Focus                :       0.000000                            0.000000 6Mk@,\1  
Decenter Y tolerance on surface 1 R>gj"nB  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 um3 M4>K  
Change in Focus                :       0.000000                            0.000000 Uut,cQ". d  
Tilt X tolerance on surface (degrees) 1 &nz1[,  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 N.-Ryj&9  
Change in Focus                :       0.000000                            0.000000 sL&u%7>Re  
Tilt Y tolerance on surface (degrees) 1 Tm3$|+}$f  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 7ky(g'  
Change in Focus                :       0.000000                            0.000000 =C#,aoa!  
Decenter X tolerance on surface 2 I}k!i+Yl  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ]E=JUYf0  
Change in Focus                :       0.000000                            0.000000 /;.M$}Z>`  
Decenter Y tolerance on surface 2 ARU
,Wtj#  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 &G<ZK9Ot}0  
Change in Focus                :       0.000000                            0.000000 Z6h.gaQ7 H  
Tilt X tolerance on surface (degrees) 2 &S|laqH  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 0|GxOzNd  
Change in Focus                :       0.000000                            0.000000 lsio\ $  
Tilt Y tolerance on surface (degrees) 2 ,#WXAAmm  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 4El{2cfA  
Change in Focus                :       0.000000                            0.000000 r2sog{R  
Decenter X tolerance on surface 3 3`e1:`Hu  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ^?J:eB!  
Change in Focus                :       0.000000                            0.000000 Yhlk#>I  
Decenter Y tolerance on surface 3 <:&w/NjbI  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 HPpnw]_  
Change in Focus                :       0.000000                            0.000000 0q`'65 lx  
Tilt X tolerance on surface (degrees) 3 R9#Z=f,  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 BC4u,4S  
Change in Focus                :       0.000000                            0.000000 eq4<   
Tilt Y tolerance on surface (degrees) 3 'QW 0K]il  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ekAGzu  
Change in Focus                :       0.000000                            0.000000 TR%?U/_4;r  
Irregularity of surface 1 in fringes ^NnZYr.  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 9f"6Jw@F  
Change in Focus                :       0.000000                            0.000000 /?J_7Lg  
Irregularity of surface 2 in fringes qmL!"ZRLF  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 |x kixf4zz  
Change in Focus                :       0.000000                            0.000000 dG)A
-qbV  
Irregularity of surface 3 in fringes 3}T&|@*  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 <B``/EX^  
Change in Focus                :       0.000000                            0.000000 9X*q^u  
Index tolerance on surface 1 z$YOV"N  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 fi,=z  
Change in Focus                :       0.000000                            0.000000 {_ 1q`5o  
Index tolerance on surface 2 &<>A  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 oNEU?+  
Change in Focus                :       0.000000                           -0.000000 cdGl[dQ/  
"thu@~aC  
Worst offenders: twN(]w}Ps|  
Type                      Value      Criterion        Change 'Kl
z`)F  
TSTY   2            -0.20000000     0.35349910    -0.19053324 |w>DZG!}1-  
TSTY   2             0.20000000     0.35349910    -0.19053324 x208^=F\\  
TSTX   2            -0.20000000     0.35349910    -0.19053324 hB^"GYZ  
TSTX   2             0.20000000     0.35349910    -0.19053324 )8N/t6Q  
TSTY   1            -0.20000000     0.42678383    -0.11724851 jgO{DNe(=  
TSTY   1             0.20000000     0.42678383    -0.11724851 ER|5_  
TSTX   1            -0.20000000     0.42678383    -0.11724851 |mM
7P^I  
TSTX   1             0.20000000     0.42678383    -0.11724851 t)v#y!Ci"  
TSTY   3            -0.20000000     0.42861670    -0.11541563 ,~kMkBkl~  
TSTY   3             0.20000000     0.42861670    -0.11541563 ^#Z(&/5f0  
Cn{UzSKfs  
Estimated Performance Changes based upon Root-Sum-Square method: Cy2X>Tl"<E  
Nominal MTF                 :     0.54403234 ~&qe"0  
Estimated change            :    -0.36299231 \Lc]6?,R  
Estimated MTF               :     0.18104003 ah
f$#UQLb  
U{_O=S u  
Compensator Statistics: =AAH}  
Change in back focus: 9c?izpA  
Minimum            :        -0.000000 S_WY91r  
Maximum            :         0.000000 ![V<vIy  
Mean               :        -0.000000 ^wHO!$  
Standard Deviation :         0.000000 :@3d  
W

x-{F  
Monte Carlo Analysis: UU !I@  
Number of trials: 20 # K-Q/*  
rms&U)?  
Initial Statistics: Normal Distribution ,on
v `  
 m$cM+  
  Trial       Criterion        Change g 08 `=g  
      1     0.42804416    -0.11598818 C1nQZtF R  
Change in Focus                :      -0.400171 w5|"cD#8A  
      2     0.54384387    -0.00018847 WFdS#XfV  
Change in Focus                :       1.018470 iN)@Cu7  
      3     0.44510003    -0.09893230 bEE:6)]G  
Change in Focus                :      -0.601922 #"OKO6]  
      4     0.18154684    -0.36248550 p;H1,E:Re#  
Change in Focus                :       0.920681 9o18VJR  
      5     0.28665820    -0.25737414 Z*Y?"1ar  
Change in Focus                :       1.253875 jIW:O  
      6     0.21263372    -0.33139862 W"0#  
Change in Focus                :      -0.903878 q\/|nZO4  
      7     0.40051424    -0.14351809 ~Ch`A@=5  
Change in Focus                :      -1.354815 }1>a71  
      8     0.48754161    -0.05649072 YA|*$$  
Change in Focus                :       0.215922 HWd,1  
      9     0.40357468    -0.14045766 n/6A@C  
Change in Focus                :       0.281783 xv ja  
     10     0.26315315    -0.28087919 |~/{lE=I  
Change in Focus                :      -1.048393  z/ i3  
     11     0.26120585    -0.28282649 2<O hO ^  
Change in Focus                :       1.017611 1ERz:\  
     12     0.24033815    -0.30369419 TwkzX|  
Change in Focus                :      -0.109292 WV6vM()#!C  
     13     0.37164046    -0.17239188 'X?`+2wK   
Change in Focus                :      -0.692430 4VooU [Ka(  
     14     0.48597489    -0.05805744 qd.b&i  
Change in Focus                :      -0.662040 3! +5MsR+  
     15     0.21462327    -0.32940907 BAPi<U'D  
Change in Focus                :       1.611296 [sad}@R7  
     16     0.43378226    -0.11025008 3646.i[D  
Change in Focus                :      -0.640081 ;L`'xFo>>  
     17     0.39321881    -0.15081353 a[u8x mH  
Change in Focus                :       0.914906 N8vWwN[3  
     18     0.20692530    -0.33710703 V*AG0@&!  
Change in Focus                :       0.801607 I;`V*/s8"  
     19     0.51374068    -0.03029165 B845BSmh  
Change in Focus                :       0.947293 %_u3Np  
     20     0.38013374    -0.16389860 LY|h*a6Ym  
Change in Focus                :       0.667010 x}roPhZ  
B|%;(bM2C  
Number of traceable Monte Carlo files generated: 20 S*]IR"YL  
tsk}]@W  
Nominal     0.54403234 pUPb+:^R  
Best        0.54384387    Trial     2 }l/md/C0  
Worst       0.18154684    Trial     4 z#\Z
|OKU  
Mean        0.35770970 fT@#S}t  
Std Dev     0.11156454 !pN,,H6Y  
e*g; +nz  
Qh*|mW  
Compensator Statistics: "<&F=gV  
Change in back focus: saV3<zgx  
Minimum            :        -1.354815 |9%>R*  
Maximum            :         1.611296 "L,FUo^&  
Mean               :         0.161872 tSm|U<  
Standard Deviation :         0.869664 $'&5gFr9  
T#( s2  
90% >       0.20977951               7e40
}n
 
80% >       0.22748071               06ueE\@Sg  
50% >       0.38667627               HU'd/5fun  
20% >       0.46553746               EfyF]cYL  
10% >       0.50064115                p5bH-km6  
s<5t}{x  
End of Run. :4WwCpgz,  
\Lc pl-;?  
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 >Z3}WMgBN  
uwIZzz  
w3& F e=c  
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 )jH"6my_  
Zj},VB*T  
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                 KDY~9?}TM  
80% >       0.22748071                 :Ct}||9/  
50% >       0.38667627                 MBa/-fD  
20% >       0.46553746                 mG2}JWA  
10% >       0.50064115 .t["kaA  
KcSvf;sx  
最后这个数值是MTF值呢，还是MTF的公差？ ^i\zMMR
 
mB!81%f%|  
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？？？   B[Tw0rQ  
XL"e<P;t  
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  : *BSL=8G{  
90% >       0.20977951                 %Uuhi&PA-l  
80% >       0.22748071                 lKe aI  
50% >       0.38667627                 >yT:eG  
20% >       0.46553746                 *S;v406  
10% >       0.50064115 dmf~w_(7  
....... N>@AsI  

WT!%FQ9  
/(vT49(]  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   377$c;4F  
Mode                : Sensitivities -6Cxz./#yS  
Sampling            : 2 2,dGRf  
Nominal Criterion   : 0.54403234 /I: d<A  
Test Wavelength     : 0.6328 +dR$;!WB3  
v!40>[?|p  
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？ #|2w^Kn  
XKMJsEPsW  
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