[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 vq*N  
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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 H,q
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图片:2.jpg

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然后运行分析的结果如下： 38!$9)  
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Analysis of Tolerances T#^  
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File : E:\光学设计资料\zemax练习\f500.ZMX %'j)~  
Title: Y((s<]7  
Date : TUE JUN 21 2011 K1Nhz'^=D  
/Dj6Bj }  
Units are Millimeters. gF1qZ=<  
All changes are computed using linear differences. &|u  
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Paraxial Focus compensation only. r00waw>C\  
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WARNING: Solves should be removed prior to tolerancing. .ps'{rl8  
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Mnemonics: 9@Yk8  
TFRN: Tolerance on curvature in fringes. XJsHy_6  
TTHI: Tolerance on thickness. +Y,>ftN  
TSDX: Tolerance on surface decentering in x. !v^D}P 3Y  
TSDY: Tolerance on surface decentering in y. Kxz<f>`b/  
TSTX: Tolerance on surface tilt in x (degrees). QRXsLdf$$  
TSTY: Tolerance on surface tilt in y (degrees). elb|=J`M0  
TIRR: Tolerance on irregularity (fringes). ,"  
TIND: Tolerance on Nd index of refraction. O^hWG ~o  
TEDX: Tolerance on element decentering in x. B2VC:TG>  
TEDY: Tolerance on element decentering in y. F{
J>=TC  
TETX: Tolerance on element tilt in x (degrees). Dna0M0   
TETY: Tolerance on element tilt in y (degrees). 0 V*Di2  
?8. $A2(Xw  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. n>jb<uz  
,Cj1S7GFR  
WARNING: Boundary constraints on compensators will be ignored. ]uX'[Z}t  
0Psp/H%  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm MhNzmI&`  
Mode                : Sensitivities 8I04Nx  
Sampling            : 2 BFt?%E/]  
Nominal Criterion   : 0.54403234 <Bb$d@c  
Test Wavelength     : 0.6328 V0z.w:-  
!HL7a]PB  
*W,"UL6U8y  
Fields: XY Symmetric Angle in degrees 8AT;9wZqt  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY Hv(0<k6oH  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 R!;tF|]  
g}0}$WgH:  
Sensitivity Analysis: FGu:8`c9  

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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| CE-ySIa  
Type                      Value      Criterion        Change          Value      Criterion        Change *qYcb} ]  
Fringe tolerance on surface 1 ibex:W^  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 iU{bPyz,  
Change in Focus                :      -0.000000                            0.000000 {MU>5\  
Fringe tolerance on surface 2 bKj#HHy\I  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 XP *pYN  
Change in Focus                :       0.000000                            0.000000 /E$"\m
d  
Fringe tolerance on surface 3 mm\Jf  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 w|gtb~oh  
Change in Focus                :      -0.000000                            0.000000 X{\>TOk  
Thickness tolerance on surface 1 G!T)V2y  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 0[TZ$<v"  
Change in Focus                :       0.000000                            0.000000 #sdW3m_%  
Thickness tolerance on surface 2 E{sTxOI$  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 GM|gm-t<@  
Change in Focus                :       0.000000                           -0.000000 |Y|{9Osus  
Decenter X tolerance on surfaces 1 through 3 RS!~5nk5  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 G*uy@s:  
Change in Focus                :       0.000000                            0.000000 Teu4;  
Decenter Y tolerance on surfaces 1 through 3 D`0II=  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 dQ@e+u5  
Change in Focus                :       0.000000                            0.000000 G*2bYsnhX  
Tilt X tolerance on surfaces 1 through 3 (degrees) (p26TN;*$5  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 KG)7hja<6g  
Change in Focus                :       0.000000                            0.000000 7lY&/-V  
Tilt Y tolerance on surfaces 1 through 3 (degrees) A>(m}P  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 ]Gm,sp.x  
Change in Focus                :       0.000000                            0.000000 [[P?T^KT  
Decenter X tolerance on surface 1 &^FCp'J-  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 !/ TeTmo  
Change in Focus                :       0.000000                            0.000000 K/79Tb-  
Decenter Y tolerance on surface 1 p8hF`D~  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 v' .:?9  
Change in Focus                :       0.000000                            0.000000 96T.xT>&  
Tilt X tolerance on surface (degrees) 1 ~?m';  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 %/b?T]{  
Change in Focus                :       0.000000                            0.000000 [5,aBf)X  
Tilt Y tolerance on surface (degrees) 1 |lOxRUf~  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 &}@U#w]l  
Change in Focus                :       0.000000                            0.000000 su/l'p'  
Decenter X tolerance on surface 2 CdlE"Ye  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 B-ReBtN  
Change in Focus                :       0.000000                            0.000000 L
OpnPH`  
Decenter Y tolerance on surface 2 cOcF 
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TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ;0O3b  
Change in Focus                :       0.000000                            0.000000 dX{|-;6vm  
Tilt X tolerance on surface (degrees) 2 &Z/aM?  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 <KqZ.7XfB  
Change in Focus                :       0.000000                            0.000000 h2ewYe<87`  
Tilt Y tolerance on surface (degrees) 2 S-WD?BFC  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 TKj8a(R_  
Change in Focus                :       0.000000                            0.000000 'Dv `Gj  
Decenter X tolerance on surface 3 &1Y

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TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 /+pbO-rW*  
Change in Focus                :       0.000000                            0.000000 $cEl6(66iX  
Decenter Y tolerance on surface 3 z(d@!Cd  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &$tBD@7  
Change in Focus                :       0.000000                            0.000000 K@Q_q/(%;  
Tilt X tolerance on surface (degrees) 3 )(~4fA5j)  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 mv|eEz)r  
Change in Focus                :       0.000000                            0.000000 Wz}RJC7p  
Tilt Y tolerance on surface (degrees) 3 $D +6=m[  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 N ncur]  
Change in Focus                :       0.000000                            0.000000 l-xKfp`  
Irregularity of surface 1 in fringes ~[dU%I>L^  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 >Lp^QP1gU  
Change in Focus                :       0.000000                            0.000000 W&ya_iP~C  
Irregularity of surface 2 in fringes ."Wdpf`~  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 u"
XqWLTV  
Change in Focus                :       0.000000                            0.000000 =k6zUw;5 U  
Irregularity of surface 3 in fringes "-GjwB  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 GY,l&.&  
Change in Focus                :       0.000000                            0.000000 r,X5@/  
Index tolerance on surface 1 {%5k1,/(  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 $7eO33Bm  
Change in Focus                :       0.000000                            0.000000 eBX#^  
Index tolerance on surface 2 .ii9-+_  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Y~EKMowI&e  
Change in Focus                :       0.000000                           -0.000000 VXXo\LQUU  
jOj`S%7  
Worst offenders: Yh)yp?  
Type                      Value      Criterion        Change Wm$(b2t  
TSTY   2            -0.20000000     0.35349910    -0.19053324 90L,.  
TSTY   2             0.20000000     0.35349910    -0.19053324 QEK,mc3  
TSTX   2            -0.20000000     0.35349910    -0.19053324 n.jF:  
TSTX   2             0.20000000     0.35349910    -0.19053324 {E1g+><  
TSTY   1            -0.20000000     0.42678383    -0.11724851 H_KE^1  
TSTY   1             0.20000000     0.42678383    -0.11724851 ;SoKX?up5  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ln%xp
)t  
TSTX   1             0.20000000     0.42678383    -0.11724851 Dw{rjK\TT'  
TSTY   3            -0.20000000     0.42861670    -0.11541563 \9;u.&$mNB  
TSTY   3             0.20000000     0.42861670    -0.11541563 )k@W6N  
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Estimated Performance Changes based upon Root-Sum-Square method: yPrp:%PS  
Nominal MTF                 :     0.54403234 uH[d%y/  
Estimated change            :    -0.36299231 /3->TS  
Estimated MTF               :     0.18104003 E;$)Oz  
}[XzM/t  
Compensator Statistics: im{'PgiR  
Change in back focus: R2WEPMH%  
Minimum            :        -0.000000 }MAQhXI^O|  
Maximum            :         0.000000 rOQhS]TP*  
Mean               :        -0.000000 S'M=
P_-7  
Standard Deviation :         0.000000 ks|[`FH  
jV Yt=j*"V  
Monte Carlo Analysis: 834(kw+#9  
Number of trials: 20 Q<W9<&VZe  
@Aa$k:_  
Initial Statistics: Normal Distribution Z&FC:4!!  
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  Trial       Criterion        Change H?98^y7  
      1     0.42804416    -0.11598818 n B4)%  
Change in Focus                :      -0.400171 S!Ue+jW  
      2     0.54384387    -0.00018847 G0Zq:kJ  
Change in Focus                :       1.018470 @/h_v#W  
      3     0.44510003    -0.09893230 Jcf'Zw"\  
Change in Focus                :      -0.601922 a7'.*H]  
      4     0.18154684    -0.36248550 $O"S*)9  
Change in Focus                :       0.920681 c#sPM!!  
      5     0.28665820    -0.25737414 V_f}Y8>e  
Change in Focus                :       1.253875 @s!9T  
      6     0.21263372    -0.33139862 (+7gS_c  
Change in Focus                :      -0.903878 @w&VI6  
      7     0.40051424    -0.14351809 hZ2!UW4'  
Change in Focus                :      -1.354815 "&?F6Pi  
      8     0.48754161    -0.05649072 bK;I:JK3  
Change in Focus                :       0.215922 "3o{@TdU  
      9     0.40357468    -0.14045766 wy6>^_z  
Change in Focus                :       0.281783 N),bhYS]  
     10     0.26315315    -0.28087919 ~$XbYR-  
Change in Focus                :      -1.048393 fP>_P#gZ  
     11     0.26120585    -0.28282649 |_L\^T|6  
Change in Focus                :       1.017611 `
:cnu;  
     12     0.24033815    -0.30369419 p\I,P2on  
Change in Focus                :      -0.109292 #mg6F$E  
     13     0.37164046    -0.17239188 x*td nor&  
Change in Focus                :      -0.692430 tdSy&]P  
     14     0.48597489    -0.05805744 9
EzXf+f  
Change in Focus                :      -0.662040 IJHNb_Cku  
     15     0.21462327    -0.32940907 lx*"Pj9hho  
Change in Focus                :       1.611296 5=%:CN!/@p  
     16     0.43378226    -0.11025008 !|6M,Rk_  
Change in Focus                :      -0.640081 G)5w_^&%  
     17     0.39321881    -0.15081353
z}\TS.  
Change in Focus                :       0.914906 q[p+OpA  
     18     0.20692530    -0.33710703 ;
okFm  
Change in Focus                :       0.801607 *sK")Q4N  
     19     0.51374068    -0.03029165 8 tMfh  
Change in Focus                :       0.947293 am.}2QZU  
     20     0.38013374    -0.16389860 WLGk  
Change in Focus                :       0.667010 i zJa`K  
=Q|_v}  
Number of traceable Monte Carlo files generated: 20 oC0K!{R*  
7U68|\fI!  
Nominal     0.54403234 v0euvs  
Best        0.54384387    Trial     2 P0O5CaR  
Worst       0.18154684    Trial     4 2mUq$kws  
Mean        0.35770970 I;iJa@HWQ  
Std Dev     0.11156454 '>dsROB->  
S*;8z}5<\  
)]x/MC:9r  
Compensator Statistics: /V@~Vlww  
Change in back focus: }T=0]u4,  
Minimum            :        -1.354815 cU <T;1VQ  
Maximum            :         1.611296 dw{L,u`68  
Mean               :         0.161872 vi?{H*H4c  
Standard Deviation :         0.869664 9sYN7x  
r.1/*i  
90% >       0.20977951               RbB y8ZVM  
80% >       0.22748071               )>,; GVu"  
50% >       0.38667627               5bU[uT,`6  
20% >       0.46553746                d(PS  
10% >       0.50064115                IG@.WsM_  
P5 GM s  
End of Run. A0{ !m  
={&}8VA  
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 dXr=&@1  

图片:3.JPG

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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 xb/L AlJ  
iW.4'9  
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'?{_  
80% >       0.22748071                 {&tbp Bl#  
50% >       0.38667627                 o$dnp`E  
20% >       0.46553746                 r\6 "mU  
10% >       0.50064115 E]G#"EV!Y  
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最后这个数值是MTF值呢，还是MTF的公差？ "[f"h  
cYBv}ylw}R  
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？？？   a.P7O!2Lp  
6Y!hz7D  
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  : <uGc=Du  
90% >       0.20977951                 _M n7zt1^  
80% >       0.22748071                 u&)+~X  
50% >       0.38667627                 rCGyr}(NC  
20% >       0.46553746                
20[_eu)  
10% >       0.50064115 &A=>x  
....... O`2;n.>\  

_c*0Rr  
#KA,=J  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   YXCfP
~i  
Mode                : Sensitivities 
9F8"(  
Sampling            : 2 gC-3ghmgS  
Nominal Criterion   : 0.54403234 zcCX;N  
Test Wavelength     : 0.6328 \(9hg.E  
B4k~~;|  
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？ ZTV|rzE   
d+P<nI/|  
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