[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 :^i^0dC  
&<3&'*ueW  

图片:1.JPG

`zA#z />  
X|}2_B  
然后添加了默认公差分析，基本没变 #Exp51  
[Wi1|]X"G  

图片:2.jpg

jq-l5})h  
x
wi\  
然后运行分析的结果如下： 8)L*AdDAW!  
:g6n,p_#  
Analysis of Tolerances s@8w-]"  
Kcy@$uF{2  
File : E:\光学设计资料\zemax练习\f500.ZMX u0QzLi,  
Title: lk3=4|?zsE  
Date : TUE JUN 21 2011 PLX>-7@  
CrC=A=e  
Units are Millimeters. W/fuKGZi_  
All changes are computed using linear differences. y7/F_{  
YJ_\Ns+Ow  
Paraxial Focus compensation only. cl@
g  
v6GPS1:a  
WARNING: Solves should be removed prior to tolerancing. !cSq+eD  
q{0
R=jb  
Mnemonics: Q>Qibr  
TFRN: Tolerance on curvature in fringes. Qm4o7x{q  
TTHI: Tolerance on thickness. */^QH@P  
TSDX: Tolerance on surface decentering in x. OsqNB'X  
TSDY: Tolerance on surface decentering in y. 0[Ht_qxb  
TSTX: Tolerance on surface tilt in x (degrees). ^uBxgWIC  
TSTY: Tolerance on surface tilt in y (degrees). iK5_u2]Q  
TIRR: Tolerance on irregularity (fringes). x/!5K|c  
TIND: Tolerance on Nd index of refraction. q%Yn;g|_  
TEDX: Tolerance on element decentering in x. bD^b  
TEDY: Tolerance on element decentering in y. qIIJ4n  
TETX: Tolerance on element tilt in x (degrees). T4)fOu3]  
TETY: Tolerance on element tilt in y (degrees). zCv"]%  
S35~Cp  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. \xv;sl$f  
e:'?*BYVg3  
WARNING: Boundary constraints on compensators will be ignored. >J9oH=S6  
M_g?<rK  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 3ZEB  
Mode                : Sensitivities ZJPmR/OV_  
Sampling            : 2 `d7n?|pD  
Nominal Criterion   : 0.54403234 9KWuN:Sg  
Test Wavelength     : 0.6328 km~Ll  
'2^7-3_1  
a.N{-2ptH  
Fields: XY Symmetric Angle in degrees VTy9_~q  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY El\%E"Tk%  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 JjaoOe  
1#IlWEg  
Sensitivity Analysis: F8-?dpf'  
?POUtRN  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| >zAUW[]C:I  
Type                      Value      Criterion        Change          Value      Criterion        Change ?;[w
" `"  
Fringe tolerance on surface 1 h2ytS^  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 A,  3bC  
Change in Focus                :      -0.000000                            0.000000 wE+${B03  
Fringe tolerance on surface 2 X+UJzR90  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 (hiyNMC
  
Change in Focus                :       0.000000                            0.000000 IxLhU45  
Fringe tolerance on surface 3 8NyJc"T<.  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 vz.>~HBP  
Change in Focus                :      -0.000000                            0.000000 q`-;AG|xF  
Thickness tolerance on surface 1 !*RqCS,  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 Cj~'Lhmv'T  
Change in Focus                :       0.000000                            0.000000 [!!Q,S"  
Thickness tolerance on surface 2 Tg!m`9s+  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 '%q$`KDb  
Change in Focus                :       0.000000                           -0.000000 h1'\:N`  
Decenter X tolerance on surfaces 1 through 3 Ym3\pRFiD  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 9$2/MT't  
Change in Focus                :       0.000000                            0.000000 CHe>OreiS  
Decenter Y tolerance on surfaces 1 through 3 "g$IP9?U  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 +
$g}4  
Change in Focus                :       0.000000                            0.000000 0$,SF3K  
Tilt X tolerance on surfaces 1 through 3 (degrees) u\C lP#  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 >=[(^l  
Change in Focus                :       0.000000                            0.000000 B95B|tU>.  
Tilt Y tolerance on surfaces 1 through 3 (degrees) ")d`dj\o  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 0`^&9nR  
Change in Focus                :       0.000000                            0.000000 0#nPbe,Lj  
Decenter X tolerance on surface 1 Q~Hy%M%R3  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 #O+),,WS  
Change in Focus                :       0.000000                            0.000000 :j
+ ZI3@  
Decenter Y tolerance on surface 1 sBcPq SMby  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ?Y@N`S  
Change in Focus                :       0.000000                            0.000000 q FAT]{{  
Tilt X tolerance on surface (degrees) 1 e)(wss+d7P  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 %}%Qc6.H  
Change in Focus                :       0.000000                            0.000000 @3zg=?3  
Tilt Y tolerance on surface (degrees) 1 6oGYnu;UZ  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 .ev?"!Vpp9  
Change in Focus                :       0.000000                            0.000000 c@893<_  
Decenter X tolerance on surface 2 Q)IKOt;N]  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 8P|D13- Q  
Change in Focus                :       0.000000                            0.000000 p,eTY[k?  
Decenter Y tolerance on surface 2 $m/)FnU/  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 VIv&ofyAR  
Change in Focus                :       0.000000                            0.000000 U|IzXQX(  
Tilt X tolerance on surface (degrees) 2 zzX_q(:S  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 A<??T[  
Change in Focus                :       0.000000                            0.000000 neLAEHV  
Tilt Y tolerance on surface (degrees) 2 <i&_ooX  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Ru>MFG  
Change in Focus                :       0.000000                            0.000000 ]@phF _  
Decenter X tolerance on surface 3 t+!$[K0/  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 nCdR EXw  
Change in Focus                :       0.000000                            0.000000 Z'.AAOG  
Decenter Y tolerance on surface 3 "$YJX1u3  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 K1M%!JKh)x  
Change in Focus                :       0.000000                            0.000000 0eDHu  
Tilt X tolerance on surface (degrees) 3 ,^\2P$rT  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 0"f\@8r(  
Change in Focus                :       0.000000                            0.000000 L6|oyf  
Tilt Y tolerance on surface (degrees) 3
rR(X9i  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 $xPaYf  
Change in Focus                :       0.000000                            0.000000 oYH^_V  
Irregularity of surface 1 in fringes }khV'6"'|  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 5Ou`z5S\k  
Change in Focus                :       0.000000                            0.000000 %5"9</a&G  
Irregularity of surface 2 in fringes YwjKAy
LU  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 Na]:_K5Dp  
Change in Focus                :       0.000000                            0.000000 )QU  
Irregularity of surface 3 in fringes kY-N>E:  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ]
1#e#M]#  
Change in Focus                :       0.000000                            0.000000 D$I5z
.a  
Index tolerance on surface 1 JehrDC2N  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 rWR}Stc@
]  
Change in Focus                :       0.000000                            0.000000 >JFO@O5  
Index tolerance on surface 2 Ws|j#X<  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 sN9&,&W1  
Change in Focus                :       0.000000                           -0.000000 *V8<:OG|e  
gc-@"wI?  
Worst offenders: *Doa*wQ  
Type                      Value      Criterion        Change of%Ktm5Qi  
TSTY   2            -0.20000000     0.35349910    -0.19053324 CVL3VT1j0  
TSTY   2             0.20000000     0.35349910    -0.19053324 #W4dkCd(pF  
TSTX   2            -0.20000000     0.35349910    -0.19053324 61k"p2?+  
TSTX   2             0.20000000     0.35349910    -0.19053324 BBwy,\o#  
TSTY   1            -0.20000000     0.42678383    -0.11724851 U`,6 * MS  
TSTY   1             0.20000000     0.42678383    -0.11724851 |B.Y6L6l  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ) l:[^$=,  
TSTX   1             0.20000000     0.42678383    -0.11724851 =5~jx  
TSTY   3            -0.20000000     0.42861670    -0.11541563 nrub*BuA  
TSTY   3             0.20000000     0.42861670    -0.11541563 z[L8
$7L  
<lx
+/o  
Estimated Performance Changes based upon Root-Sum-Square method: R{
<kW9!  
Nominal MTF                 :     0.54403234 1WxK#c-)  
Estimated change            :    -0.36299231 < $lCkSx<Q  
Estimated MTF               :     0.18104003 'vbsvT  
Czs8!S  
Compensator Statistics: ,Z&xNBX  
Change in back focus: 0zmE>/O+
 
Minimum            :        -0.000000 Ezc?#<+7  
Maximum            :         0.000000 w0rRSD4S8B  
Mean               :        -0.000000 6t[+pL\b  
Standard Deviation :         0.000000 Lt?lv2k=L  
4xjPiHd<  
Monte Carlo Analysis: ` Mjj@[  
Number of trials: 20 |"ls\ 7  
.,<1%-R34q  
Initial Statistics: Normal Distribution N +Yxz;Mg  
n'n/Tu   
  Trial       Criterion        Change O_oPh]x)  
      1     0.42804416    -0.11598818 t5\-v_mG=&  
Change in Focus                :      -0.400171 pjKWtY@=X  
      2     0.54384387    -0.00018847 *2pt%eav  
Change in Focus                :       1.018470 =_JjmTy;a  
      3     0.44510003    -0.09893230 Lb:g4A"  
Change in Focus                :      -0.601922 V_:1EBzz  
      4     0.18154684    -0.36248550 ,w<S|#W~+  
Change in Focus                :       0.920681 Y,<{vLEC  
      5     0.28665820    -0.25737414 ;DqWh0  
Change in Focus                :       1.253875 k]F[>26k  
      6     0.21263372    -0.33139862 AVlhNIr  
Change in Focus                :      -0.903878 fIn
b[  
      7     0.40051424    -0.14351809 +rd|A|hRq  
Change in Focus                :      -1.354815 q;T{|5/O  
      8     0.48754161    -0.05649072 <'y?KiphL  
Change in Focus                :       0.215922 5d Eh7XL  
      9     0.40357468    -0.14045766 2b}t,&bv?  
Change in Focus                :       0.281783 :%tU'w  
     10     0.26315315    -0.28087919 >)fi^  
Change in Focus                :      -1.048393 4[m`#   
     11     0.26120585    -0.28282649 Ra)
3+M!x  
Change in Focus                :       1.017611 HJ=
:8:  
     12     0.24033815    -0.30369419 !Q2d(H>   
Change in Focus                :      -0.109292 ] {RDVA=]  
     13     0.37164046    -0.17239188 c69C  
Change in Focus                :      -0.692430 b|l:fT?&  
     14     0.48597489    -0.05805744 0fb2;&pUa  
Change in Focus                :      -0.662040 EizKoHI-z  
     15     0.21462327    -0.32940907 tU}h~&M  
Change in Focus                :       1.611296 l+xX/A)  
     16     0.43378226    -0.11025008 Si2k"<5U  
Change in Focus                :      -0.640081 hO\<%0F  
     17     0.39321881    -0.15081353 {j.bC@hWw  
Change in Focus                :       0.914906 fiK6@,  
     18     0.20692530    -0.33710703 *v;2PP[^  
Change in Focus                :       0.801607 o5Dk:Bw  
     19     0.51374068    -0.03029165 N({MP
O9  
Change in Focus                :       0.947293 yr)G]K[/  
     20     0.38013374    -0.16389860 sJB;3"~  
Change in Focus                :       0.667010 bkOv2tZ  
<Th6r.#?  
Number of traceable Monte Carlo files generated: 20 }MJy +Z8&  
/hr7NT{e%v  
Nominal     0.54403234 f',Op1o  
Best        0.54384387    Trial     2 =_.l8IYX$%  
Worst       0.18154684    Trial     4 >{q]&}^U  
Mean        0.35770970 !j9t*2m[  
Std Dev     0.11156454 NW~N}5T  
7-bd9uVK  
;v}GJ
<3  
Compensator Statistics: %f&/E"M  
Change in back focus: QyEnpZ8?a  
Minimum            :        -1.354815 /C:Y94B-z  
Maximum            :         1.611296 v,FU
^f-'  
Mean               :         0.161872 :(/~:^!  
Standard Deviation :         0.869664 ISYXH9V  
29;?I3< *  
90% >       0.20977951               rN<0 R`4sE  
80% >       0.22748071               pR*VdC _mY  
50% >       0.38667627               Km qMFB62  
20% >       0.46553746               S]}nm  
10% >       0.50064115                qmkAg }2  
[`ebM,W  
End of Run. Z+*9#!?J  
!EvAB+`jLI  
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 zIqU,n|]s  

图片:3.JPG

T:27r8"Rh  
cXA i k-  
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 5MroNr  
]i|h(>QWP  
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                 +cJL7=V&  
80% >       0.22748071                 {JO^tI  
50% >       0.38667627                 e2AX0(  
20% >       0.46553746                 *^\Ef4Lh  
10% >       0.50064115 `68@+|#  
oK9( /v  
最后这个数值是MTF值呢，还是MTF的公差？ :,3C 0T3r  
3$jT*Oy
G#  
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？？？   Q0)#8Rc
m  
~IY%  
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  : _1!7V3|^  
90% >       0.20977951                 bc*X/).  
80% >       0.22748071                 C/
_ZUF(V  
50% >       0.38667627                 .14~J6  
20% >       0.46553746                 H(H<z,$}T  
10% >       0.50064115 +*\u :n  
....... |e=,oV"  

c\/=iVw,  
y>S.?H:P  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   [.K1iZyTi  
Mode                : Sensitivities sZ'nYo  
Sampling            : 2 {0r0\D>bw  
Nominal Criterion   : 0.54403234 _qU4Fadgm  
Test Wavelength     : 0.6328 wDw[RW3  
m.hkbet/R  
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？ hC:n5]K  
57aXQ8u{  
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