[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 $>w/
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图片:1.JPG

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然后添加了默认公差分析，基本没变 Lj 8<'"U#  
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图片:2.jpg

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然后运行分析的结果如下： >"d?(@PJ  
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Analysis of Tolerances 2@LbfoA  
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File : E:\光学设计资料\zemax练习\f500.ZMX <z0WLw0'z  
Title: V|FrN*m  
Date : TUE JUN 21 2011 bToq$%sCg  
X0uJNHO  
Units are Millimeters. {j SmoA  
All changes are computed using linear differences. b?VV'{4  
.i/m  
Paraxial Focus compensation only. npH?4S-8G  
2<r\/-#pU  
WARNING: Solves should be removed prior to tolerancing. Z4q~@|+%  
HW6.O|3  
Mnemonics: j1U 5~%^  
TFRN: Tolerance on curvature in fringes. r"wtZ]69  
TTHI: Tolerance on thickness. mP^SS Je  
TSDX: Tolerance on surface decentering in x. bcz-$?]  
TSDY: Tolerance on surface decentering in y. sYn[uPefj  
TSTX: Tolerance on surface tilt in x (degrees). pJ^NA2  
TSTY: Tolerance on surface tilt in y (degrees). xeA#u J  
TIRR: Tolerance on irregularity (fringes). "/+zMLY  
TIND: Tolerance on Nd index of refraction. ZFxLBb:  
TEDX: Tolerance on element decentering in x. ;JTt2qQKo  
TEDY: Tolerance on element decentering in y. <$i4?)f(  
TETX: Tolerance on element tilt in x (degrees). ^[q /Mw  
TETY: Tolerance on element tilt in y (degrees). b"CAKl  
SF<Vds}A2  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. Xe1P- 60  
vq'k|_Qi=  
WARNING: Boundary constraints on compensators will be ignored. Q*ju sm  
:td ~g;w  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm SW 8x]B  
Mode                : Sensitivities U ?b".hJ2  
Sampling            : 2 WeJ@xL  
Nominal Criterion   : 0.54403234 ^k/i-%k0  
Test Wavelength     : 0.6328 $yb@ Hhx>  
MDO$m g  
E4oz|2!m  
Fields: XY Symmetric Angle in degrees 4na
8  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ,.mBJSE3  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 8l+H"M&|  
p,!$/Q+l  
Sensitivity Analysis: dE(tFZx  
-n))*.V  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| ]k%PG-9  
Type                      Value      Criterion        Change          Value      Criterion        Change _elX<o4  
Fringe tolerance on surface 1 _GA$6#]  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 j,-C{ K  
Change in Focus                :      -0.000000                            0.000000 tw K^I6@  
Fringe tolerance on surface 2 `DW2spd  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 3YL l;TP_  
Change in Focus                :       0.000000                            0.000000 !{UTD+|=N  
Fringe tolerance on surface 3 &0 \ ci9o  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 I0Ia6w9  
Change in Focus                :      -0.000000                            0.000000 xyeA2Y  
Thickness tolerance on surface 1 lxb zHlX  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 )e%}b-I'r  
Change in Focus                :       0.000000                            0.000000 AR&:Q4r|  
Thickness tolerance on surface 2 DSyXr~p8  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 t#wmAOW  
Change in Focus                :       0.000000                           -0.000000 smy}3k  
Decenter X tolerance on surfaces 1 through 3 QWO]`q`|  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 LBlN2)\@  
Change in Focus                :       0.000000                            0.000000 b]fzRdhl  
Decenter Y tolerance on surfaces 1 through 3 WNX5iwm  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 /@oLe[Mz$  
Change in Focus                :       0.000000                            0.000000 /DFV$+9  
Tilt X tolerance on surfaces 1 through 3 (degrees) ig#r4nQ=  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 b$JBL_U5Ch  
Change in Focus                :       0.000000                            0.000000 aMuVqZw  
Tilt Y tolerance on surfaces 1 through 3 (degrees) 5er@)p_  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 D]03eu  
Change in Focus                :       0.000000                            0.000000 pbk$o{$`W  
Decenter X tolerance on surface 1 FQsUm?ac:  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 U.oksD9v  
Change in Focus                :       0.000000                            0.000000 c4mh EE-  
Decenter Y tolerance on surface 1 
#%,RJMv  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 C"pB"^0  
Change in Focus                :       0.000000                            0.000000 Qu\@Y[eia5  
Tilt X tolerance on surface (degrees) 1 UE0$ o?  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 _ -..~K.|  
Change in Focus                :       0.000000                            0.000000 QfpuZEUK  
Tilt Y tolerance on surface (degrees) 1 @cvP0A  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 t%VDRZo7  
Change in Focus                :       0.000000                            0.000000 1T|$BK@)  
Decenter X tolerance on surface 2 S;\R!%t_  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 d j5hv
~  
Change in Focus                :       0.000000                            0.000000 hlbvt-C?}"  
Decenter Y tolerance on surface 2 Qst$S}n  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 }d Ad$^  
Change in Focus                :       0.000000                            0.000000 5]Da{Wmgs  
Tilt X tolerance on surface (degrees) 2 \_]En43mg  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 ;iQEkn2T|}  
Change in Focus                :       0.000000                            0.000000 9(_{`2R8  
Tilt Y tolerance on surface (degrees) 2 vp)Vb^K>  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324  #@.-B,]  
Change in Focus                :       0.000000                            0.000000 Ve3 ;  
Decenter X tolerance on surface 3 udk.zk  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 9.OA, 6  
Change in Focus                :       0.000000                            0.000000 HTjkR*E  
Decenter Y tolerance on surface 3 kPxT" " k  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 g}xQ6rd  
Change in Focus                :       0.000000                            0.000000 DT(d@upH  
Tilt X tolerance on surface (degrees) 3 2a=sm1?  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 7:=k`yS,  
Change in Focus                :       0.000000                            0.000000 S]/b\B.h+  
Tilt Y tolerance on surface (degrees) 3 7{kP}?  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 R`'1t3p0i  
Change in Focus                :       0.000000                            0.000000 v1G"3fy
9  
Irregularity of surface 1 in fringes w`HI]{hE~N  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 S7iDTG_@t  
Change in Focus                :       0.000000                            0.000000 [j,txe?n  
Irregularity of surface 2 in fringes r|<DqTc6l  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 x34f9! 't  
Change in Focus                :       0.000000                            0.000000 K|S:{9Q  
Irregularity of surface 3 in fringes VU.@R,  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 y*b3&%.ml  
Change in Focus                :       0.000000                            0.000000 0?Q_@Y  
Index tolerance on surface 1 A&5:ATQ/|  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 .i"W8~<e  
Change in Focus                :       0.000000                            0.000000 AC%JC+  
Index tolerance on surface 2 77 r(*.O|  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 c "=N  
Change in Focus                :       0.000000                           -0.000000 'cZN{ZMWG  
.10y0FL4  
Worst offenders: Q+q,!w8  
Type                      Value      Criterion        Change kyw/LE3$-  
TSTY   2            -0.20000000     0.35349910    -0.19053324 i&Fiq&V)[  
TSTY   2             0.20000000     0.35349910    -0.19053324 n]Li->1  
TSTX   2            -0.20000000     0.35349910    -0.19053324 /*)Tl   
TSTX   2             0.20000000     0.35349910    -0.19053324 *Ust[u  
TSTY   1            -0.20000000     0.42678383    -0.11724851 BHFY%6J!  
TSTY   1             0.20000000     0.42678383    -0.11724851 i{c@S:&@^  
TSTX   1            -0.20000000     0.42678383    -0.11724851 _`-1aA&n~  
TSTX   1             0.20000000     0.42678383    -0.11724851 cQj-+Tmu  
TSTY   3            -0.20000000     0.42861670    -0.11541563 m#e3%150{  
TSTY   3             0.20000000     0.42861670    -0.11541563 wEW4gz{s  

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Estimated Performance Changes based upon Root-Sum-Square method: xJ8%<RR!t  
Nominal MTF                 :     0.54403234 9nSWE W  
Estimated change            :    -0.36299231 T(?HMyg3  
Estimated MTF               :     0.18104003 v4/-b4ET  
U977#MXf  
Compensator Statistics: LtgXShp_!  
Change in back focus: FqFapRX66Z  
Minimum            :        -0.000000 N5zlT  
Maximum            :         0.000000 d(`AXyw  
Mean               :        -0.000000 9O*_L:4o  
Standard Deviation :         0.000000 lK7m=[j  
a`Qot  
Monte Carlo Analysis: | tQ
iFC  
Number of trials: 20 o|pT;1a"  
Z"-L[2E/{!  
Initial Statistics: Normal Distribution |Hr:S":9  
,"0)6=AE  
  Trial       Criterion        Change #K\?E.9h  
      1     0.42804416    -0.11598818 FCj{AD  
Change in Focus                :      -0.400171 3riw1
r;Q  
      2     0.54384387    -0.00018847 z&8un%Jt  
Change in Focus                :       1.018470 UO Ug4  
      3     0.44510003    -0.09893230 9Z"+?bv/  
Change in Focus                :      -0.601922 IeX^4rc(  
      4     0.18154684    -0.36248550 oEz%={f  
Change in Focus                :       0.920681 #V02
hs1  
      5     0.28665820    -0.25737414 i+3fhV  
Change in Focus                :       1.253875 Joe_PS  
      6     0.21263372    -0.33139862 SzDKByi  
Change in Focus                :      -0.903878 d5 Edu44  
      7     0.40051424    -0.14351809 4\ c,)U}  
Change in Focus                :      -1.354815 \VMD$zZx  
      8     0.48754161    -0.05649072 e?0q9W  
Change in Focus                :       0.215922 1S
Iq[1  
      9     0.40357468    -0.14045766 #L}+H!Myh  
Change in Focus                :       0.281783 b^c9po  
     10     0.26315315    -0.28087919 #zUXyT#X  
Change in Focus                :      -1.048393 7IlOG~DC  
     11     0.26120585    -0.28282649 ^rl"rEA  
Change in Focus                :       1.017611 ?jQ](i&  
     12     0.24033815    -0.30369419 )}%O>%  
Change in Focus                :      -0.109292 gd/H``x|Y  
     13     0.37164046    -0.17239188 nwt C:*}  
Change in Focus                :      -0.692430 jVgFZ,  
     14     0.48597489    -0.05805744 VQI(Vp|  
Change in Focus                :      -0.662040 ^vs=f95  
     15     0.21462327    -0.32940907 OYC_;CP  
Change in Focus                :       1.611296 HBE.F&C88  
     16     0.43378226    -0.11025008 PYRd]%X  
Change in Focus                :      -0.640081 p}b/XnV$~  
     17     0.39321881    -0.15081353 Z BUArIC  
Change in Focus                :       0.914906 $/1c= Y@  
     18     0.20692530    -0.33710703 U_l'3oPJw  
Change in Focus                :       0.801607 ;!< Znw  
     19     0.51374068    -0.03029165 qH,l#I\CG  
Change in Focus                :       0.947293 u}bf-;R  
     20     0.38013374    -0.16389860 z\ss4  
Change in Focus                :       0.667010 7r+g8+4  
X;F?:Iw\  
Number of traceable Monte Carlo files generated: 20 tcr//  
`cQo0{xK  
Nominal     0.54403234 M~*u;v
A/  
Best        0.54384387    Trial     2 :HxA`@Ok  
Worst       0.18154684    Trial     4 raVA?|'g~  
Mean        0.35770970 4F>Urh+  
Std Dev     0.11156454 x.0p%O=`  
'\fY<Q:!  
Xb !MaNm)  
Compensator Statistics: 4Tc&IwR  
Change in back focus: y %$O-q  
Minimum            :        -1.354815 Rd7_~.Bo  
Maximum            :         1.611296 g[>\4B9t  
Mean               :         0.161872 }0`nvA
f  
Standard Deviation :         0.869664 ,h\sF#|  
@;xMs8@  
90% >       0.20977951               ;R=.iOn  
80% >       0.22748071               H`8``#-|@S  
50% >       0.38667627               f=!PllxL:  
20% >       0.46553746               &0TVi  
10% >       0.50064115                +bK.NcS  
oBq 49u1  
End of Run. 3($"q]Y  
5m=I*.qE  
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 *tOG*hwdT  

图片:3.JPG

;VO.!5W@eg  
uV-'~8  
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 +t4BQf  
)4?x5#  
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                 IfO;S*Qt  
80% >       0.22748071                 !@u>A_  
50% >       0.38667627                 C^t(^9  
20% >       0.46553746                 E6Rz@"^XV  
10% >       0.50064115 (F7_S*  
PCd0 ?c   
最后这个数值是MTF值呢，还是MTF的公差？ =O _z(  
B:"THN^  
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？？？   dk QaM@  
ES<1tG  
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  : 8$xPex~2  
90% >       0.20977951                 +ww^ev%  
80% >       0.22748071                 Jsg I'  
50% >       0.38667627                 p\wJ
D1s  
20% >       0.46553746                 Jn
D{J`:  
10% >       0.50064115 N\t1T(C|  
....... N)R[6u}  

#)+- lPe  
M"=n>;*X  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   Pvo#pY^dXX  
Mode                : Sensitivities OL59e%X  
Sampling            : 2 iY[+Ywh  
Nominal Criterion   : 0.54403234 $<@\-vYvr@  
Test Wavelength     : 0.6328 s}M= oe  

&znH!AQ0  
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？ -=$2p0"R  
khd5 Cf[
 
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