[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 ZC\mxBy  
2lz {_9  

图片:1.JPG

ic~Z_?p  
^HFo3V }h  
然后添加了默认公差分析，基本没变 QAaF@Do  
c/$*%J<  

图片:2.jpg

B82,.?  
vo b$iS`>=  
然后运行分析的结果如下： 7s]Wq6  
R@ QQNYU.D  
Analysis of Tolerances UA0tFeH  
W'G{K\(/  
File : E:\光学设计资料\zemax练习\f500.ZMX %1jdiHTaL  
Title: rUFFF'm\*a  
Date : TUE JUN 21 2011 (n=Aa;  
i
^S2%qz  
Units are Millimeters. |4xo4%BQ>  
All changes are computed using linear differences. T 'i~_R6  
;tN4
HiN  
Paraxial Focus compensation only. .v7`$(T  
o_:Qk;t  
WARNING: Solves should be removed prior to tolerancing. Zi3T~:0p:  
("F)  
Mnemonics: & >b+loF  
TFRN: Tolerance on curvature in fringes. =L16hDk o  
TTHI: Tolerance on thickness. foyB{6q8  
TSDX: Tolerance on surface decentering in x. A5+
5J_)*  
TSDY: Tolerance on surface decentering in y. DrFur(=T  
TSTX: Tolerance on surface tilt in x (degrees). FAd``9kRT  
TSTY: Tolerance on surface tilt in y (degrees). Gy^FrF  
TIRR: Tolerance on irregularity (fringes). afy
/K'~  
TIND: Tolerance on Nd index of refraction. KZi'v
6  
TEDX: Tolerance on element decentering in x. ^teaJy%  
TEDY: Tolerance on element decentering in y. G:hU{S7  
TETX: Tolerance on element tilt in x (degrees). *zSxG[s  
TETY: Tolerance on element tilt in y (degrees). ??+:vai2  
7AeP Gr  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. |Pf(J;'[  
2|s<[V3rP-  
WARNING: Boundary constraints on compensators will be ignored. AI R{s7N  
y;,
y"W  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm 0k.v0a7%  
Mode                : Sensitivities mLULd}g/o  
Sampling            : 2 Q4CJ]J`  
Nominal Criterion   : 0.54403234 1 Xa+%n9  
Test Wavelength     : 0.6328 ,M{Q}:$+4  
:r^klJ(m  
?to1rFrU  
Fields: XY Symmetric Angle in degrees !(yT7#?hP  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 9c6'  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 !3QRzkJX~  
hafECs  
Sensitivity Analysis: qlEFJ5;  
iW;}%$lVX  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| m
1i4,  
Type                      Value      Criterion        Change          Value      Criterion        Change ])S$x{.g  
Fringe tolerance on surface 1 G#'Q~N  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 +>u>`|  
Change in Focus                :      -0.000000                            0.000000 Y}K!`~n1S  
Fringe tolerance on surface 2 '6+Edu~Ho)  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ki`8(u6l  
Change in Focus                :       0.000000                            0.000000 iT[oKD0)  
Fringe tolerance on surface 3 Wge ho  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 }D Z)W0RDe  
Change in Focus                :      -0.000000                            0.000000 OH0S2?,{>  
Thickness tolerance on surface 1 [jy0@Q9  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 =g >.X9lr  
Change in Focus                :       0.000000                            0.000000 ]79~:m[C  
Thickness tolerance on surface 2 x'zihDOI  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 JxnuGkE0[#  
Change in Focus                :       0.000000                           -0.000000 D{Oq\*  
Decenter X tolerance on surfaces 1 through 3 RrKfTiK H  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 TbMdQbj}  
Change in Focus                :       0.000000                            0.000000 .<HC[ls  
Decenter Y tolerance on surfaces 1 through 3 #n=A)#'my  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 pFEZDf}:  
Change in Focus                :       0.000000                            0.000000 A3z/Bz4]:#  
Tilt X tolerance on surfaces 1 through 3 (degrees) nW~$ (Qnd  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 gA{'Q\  
Change in Focus                :       0.000000                            0.000000 Yg[ v/[]  
Tilt Y tolerance on surfaces 1 through 3 (degrees) 0~qf-x  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 %V31B\]Nz7  
Change in Focus                :       0.000000                            0.000000 %v_IX2'  
Decenter X tolerance on surface 1 {s,^b|I2#U  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 eN2dy-0  
Change in Focus                :       0.000000                            0.000000 C1KfXC*|L  
Decenter Y tolerance on surface 1 qw5&Y$((  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 "Wo
.8  
Change in Focus                :       0.000000                            0.000000 Y~:
}l9Qs  
Tilt X tolerance on surface (degrees) 1 OI*ZVD)J  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 KS b(R/T  
Change in Focus                :       0.000000                            0.000000 1B6C<cL:sU  
Tilt Y tolerance on surface (degrees) 1 A%h~Z a  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ;]{{)dst  
Change in Focus                :       0.000000                            0.000000 |O57N'/  
Decenter X tolerance on surface 2 ;CA ?eI  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 pF|8OB%  
Change in Focus                :       0.000000                            0.000000 qZXyi'(d  
Decenter Y tolerance on surface 2 v#iFQVBq  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 $pjf#P8U  
Change in Focus                :       0.000000                            0.000000 {,i=>%X*  
Tilt X tolerance on surface (degrees) 2 4sb )^3T  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 XO0>t{G  
Change in Focus                :       0.000000                            0.000000 6`_!?u7  
Tilt Y tolerance on surface (degrees) 2 IY V-*/ |  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 =x=1uXQv5  
Change in Focus                :       0.000000                            0.000000 "!xvpsy  
Decenter X tolerance on surface 3 "|F.'qZrm  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 #m[vn^8B]y  
Change in Focus                :       0.000000                            0.000000 m{vT_ei  
Decenter Y tolerance on surface 3 tvTWZ`
  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 "fRlEO[9  
Change in Focus                :       0.000000                            0.000000 'CS^2Z  
Tilt X tolerance on surface (degrees) 3 3aEt>x  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 1a5?)D  
Change in Focus                :       0.000000                            0.000000 03~+-h&n  
Tilt Y tolerance on surface (degrees) 3 Ok*VQKyDLH  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 'uPxEu4 >4  
Change in Focus                :       0.000000                            0.000000 P)Z/JHB  
Irregularity of surface 1 in fringes v$[ @]`  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 `oB'(  
Change in Focus                :       0.000000                            0.000000 Uy(vELB  
Irregularity of surface 2 in fringes B"7$!Co  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 2^cAK t6bC  
Change in Focus                :       0.000000                            0.000000 +]A+!8%Z  
Irregularity of surface 3 in fringes uG2Xkj  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 -"2<h:#  
Change in Focus                :       0.000000                            0.000000 o~Bk0V
=  
Index tolerance on surface 1 ]&&I|K_  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 8dr0 DF$c  
Change in Focus                :       0.000000                            0.000000 X QI.0L"  
Index tolerance on surface 2 ,@}W@GGP)  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 'Y hA  
Change in Focus                :       0.000000                           -0.000000 UN,<6D3\b  
D9}d]9]$  
Worst offenders: !}iLO0  
Type                      Value      Criterion        Change %T3j8fC{s  
TSTY   2            -0.20000000     0.35349910    -0.19053324 -X`~;=m>U  
TSTY   2             0.20000000     0.35349910    -0.19053324 ;~}-AI-  
TSTX   2            -0.20000000     0.35349910    -0.19053324 b%=1"&JI:  
TSTX   2             0.20000000     0.35349910    -0.19053324 \7|s$ XQ\  
TSTY   1            -0.20000000     0.42678383    -0.11724851 j'G"ZPw1  
TSTY   1             0.20000000     0.42678383    -0.11724851 &z./4X  
TSTX   1            -0.20000000     0.42678383    -0.11724851 +#|'|}j  
TSTX   1             0.20000000     0.42678383    -0.11724851 on]\J  
TSTY   3            -0.20000000     0.42861670    -0.11541563 &Tf=~6  
TSTY   3             0.20000000     0.42861670    -0.11541563 B=Xnv*e  
RH<@c^ S  
Estimated Performance Changes based upon Root-Sum-Square method: Q{%HW4lg  
Nominal MTF                 :     0.54403234 RA*_&Ll&!C  
Estimated change            :    -0.36299231 9`r
i J4zl  
Estimated MTF               :     0.18104003 PFImqojHd  
2z.k)Qx!Z  
Compensator Statistics: 9)G:::8u7  
Change in back focus: Ln"+nKr  
Minimum            :        -0.000000 ~J8cS  
Maximum            :         0.000000 ?9o#%?6k  
Mean               :        -0.000000 @)aXNQY  
Standard Deviation :         0.000000 ,\|n=T,  
&M!4]pow
 
Monte Carlo Analysis: yC9:sQ'k  
Number of trials: 20 X;K8,A7`  
*T.={>HE8  
Initial Statistics: Normal Distribution uf{SxEa  
Ig40#pA  
  Trial       Criterion        Change jD&}}:Dj  
      1     0.42804416    -0.11598818 Up]VU9z  
Change in Focus                :      -0.400171 oN1!>S9m  
      2     0.54384387    -0.00018847 "uV0Oj9:  
Change in Focus                :       1.018470 :vn0|7W4  
      3     0.44510003    -0.09893230 |YG)NO  
Change in Focus                :      -0.601922 w3>Y7vxiz`  
      4     0.18154684    -0.36248550 asm[-IB2u  
Change in Focus                :       0.920681 UiGUaBmF*  
      5     0.28665820    -0.25737414 htdn$kqG   
Change in Focus                :       1.253875 -~rr<D\  
      6     0.21263372    -0.33139862 sqq/b9 uL/  
Change in Focus                :      -0.903878 kMwIu
y  
      7     0.40051424    -0.14351809 :kf3_?9rc  
Change in Focus                :      -1.354815 jzu l{'g  
      8     0.48754161    -0.05649072 Apw-7*/  
Change in Focus                :       0.215922 b&U5VA0=1  
      9     0.40357468    -0.14045766 d\1:1
ucV  
Change in Focus                :       0.281783 [T$$od[.  
     10     0.26315315    -0.28087919 S2{ ?W  
Change in Focus                :      -1.048393 EkfGw/WDw  
     11     0.26120585    -0.28282649 _umO)]Si  
Change in Focus                :       1.017611 1xFhhncf  
     12     0.24033815    -0.30369419 P:zEx]Y%  
Change in Focus                :      -0.109292 .R<s<]  
     13     0.37164046    -0.17239188 PBPJ/puW  
Change in Focus                :      -0.692430 } (GQDJp  
     14     0.48597489    -0.05805744 6`$,-(J=  
Change in Focus                :      -0.662040 skmDsZzw  
     15     0.21462327    -0.32940907 1*x5/b  
Change in Focus                :       1.611296 2Wc;hJ.1  
     16     0.43378226    -0.11025008 `*uuB;  
Change in Focus                :      -0.640081 ~gzpX,{n  
     17     0.39321881    -0.15081353 nKZRq&~^E  
Change in Focus                :       0.914906 D@YM}HXuj  
     18     0.20692530    -0.33710703 ^<5^9]x  
Change in Focus                :       0.801607 FZ}C;yUPD  
     19     0.51374068    -0.03029165 $fU/9jTa  
Change in Focus                :       0.947293 R- ?0k:  
     20     0.38013374    -0.16389860 c,[qjr#\>  
Change in Focus                :       0.667010 $[^ KCNB  
q4IjCu+  
Number of traceable Monte Carlo files generated: 20 LcQ\?]w`]  
_UbR8  
Nominal     0.54403234 o^.s!C%j  
Best        0.54384387    Trial     2 TF([yZO'  
Worst       0.18154684    Trial     4 EC\rh](d 1  
Mean        0.35770970 X\^3,k."  
Std Dev     0.11156454 \:f}X
?:  
9N3oVH
c?  
Zj /H3,7  
Compensator Statistics: =f{Z~`3  
Change in back focus: \-`oFe"  
Minimum            :        -1.354815 A.'`FtV  
Maximum            :         1.611296 !Z9ikn4A  
Mean               :         0.161872 2Dwt4V  
Standard Deviation :         0.869664 Nr*ibtz|D  
">4[+'  
90% >       0.20977951               c9_4
ohB  
80% >       0.22748071               qLktMp_  
50% >       0.38667627               e\bF_ N2VA  
20% >       0.46553746               fb S.  
10% >       0.50064115                kY |=a  
{t IoC;Y  
End of Run. khO<Z^wi[  
4VL!U?dk  
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 x:D<Mu#  

图片:3.JPG

f@V{}&ZWp  
|GLn 9vw7S  
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 ,r)d#8  
!z&seG]@  
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                 q\
b9e&2Y  
80% >       0.22748071                 5;%xqdD  
50% >       0.38667627                 (6_/n&mF  
20% >       0.46553746                 5Szo5  
10% >       0.50064115 m`w6wz  
53#5p;k  
最后这个数值是MTF值呢，还是MTF的公差？ X=7vUb,\gB  
Wh&Z *J  
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？？？   ="*C&wB^  
e@MCumc~+  
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  : BAed
[  
90% >       0.20977951                 '\qr=0aW  
80% >       0.22748071                 3hjwwLKG$  
50% >       0.38667627                 4IpFT;`q  
20% >       0.46553746                 vIv3rN=5vB  
10% >       0.50064115 G->@  
....... uU"s50m  

'KrkCA  
k}7)pJNj  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   EPf
VS  
Mode                : Sensitivities M6n.uho/  
Sampling            : 2 =-Tetp  
Nominal Criterion   : 0.54403234 I>|?B(F  
Test Wavelength     : 0.6328 epe}^Pl  
]>j_ Y,  
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？ 0cVXUTJ|W  
s6IuM )x  
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