[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 E8Y(C_:s  
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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 9_&N0>OF  
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图片:2.jpg

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然后运行分析的结果如下： v;$cx*?  
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Analysis of Tolerances 0WO-+eRB/  
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File : E:\光学设计资料\zemax练习\f500.ZMX 5y8ajae:  
Title: ^>/] Qi  
Date : TUE JUN 21 2011 p/4}SU  
=t!$72g\  
Units are Millimeters. c[zaYcbl  
All changes are computed using linear differences. qV&ai{G:  
JXKo zy41  
Paraxial Focus compensation only. :kw14?]_  
'joE-{  
WARNING: Solves should be removed prior to tolerancing. I5H#]U  
g(-}M`  
Mnemonics: hutdw>  
TFRN: Tolerance on curvature in fringes. k.K;7GZC  
TTHI: Tolerance on thickness. nZP%Z=p7  
TSDX: Tolerance on surface decentering in x. Y. 1dk  
TSDY: Tolerance on surface decentering in y. &?(472<f**  
TSTX: Tolerance on surface tilt in x (degrees). 5lYzgt-oP  
TSTY: Tolerance on surface tilt in y (degrees). ]<<+#Rg  
TIRR: Tolerance on irregularity (fringes). N3SB-E+  
TIND: Tolerance on Nd index of refraction. m>8tA+K)+)  
TEDX: Tolerance on element decentering in x. S<=
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TEDY: Tolerance on element decentering in y. NWt5)xl  
TETX: Tolerance on element tilt in x (degrees). r]yI5 ;  
TETY: Tolerance on element tilt in y (degrees). fF.qQTy;7  
v3Xt<I=4y  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. nA 5-P}  
h$#zuqm  
WARNING: Boundary constraints on compensators will be ignored. e,I{+^P  
,?(IRiq%  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm NI)q<@ju
 
Mode                : Sensitivities \rPT7\ZA  
Sampling            : 2 6Cvg-X@  
Nominal Criterion   : 0.54403234 $]I",ef  
Test Wavelength     : 0.6328 5l,Q=V^@l  
fNNi
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q+)csgN  
Fields: XY Symmetric Angle in degrees S1G=hgF_L  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY >7j(V`i"y  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 C$#X6Q!,  
0\a;} S'g#  
Sensitivity Analysis: F%F:Gr/  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| xjO((JC  
Type                      Value      Criterion        Change          Value      Criterion        Change ;y%C\YB#  
Fringe tolerance on surface 1 x39n7+j4  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 ]xf|xs  
Change in Focus                :      -0.000000                            0.000000 ZW>?y$C+  
Fringe tolerance on surface 2 v.pj PBU1  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ?~fuMy B  
Change in Focus                :       0.000000                            0.000000 97~*Z|#<+  
Fringe tolerance on surface 3 o:C],G_  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 E])X$:P?  
Change in Focus                :      -0.000000                            0.000000 F2k)hG*|{  
Thickness tolerance on surface 1 \5=fC9*G  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 {nl4(2$  
Change in Focus                :       0.000000                            0.000000 WeqQw?-  
Thickness tolerance on surface 2 Bvy(vc=UDW  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Kl)PF),  
Change in Focus                :       0.000000                           -0.000000 6yRxb(  
Decenter X tolerance on surfaces 1 through 3 1> wt  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 wU=@,K  
Change in Focus                :       0.000000                            0.000000 Ne 9R u'B6  
Decenter Y tolerance on surfaces 1 through 3 XkJzt  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 vJE>H4qPmD  
Change in Focus                :       0.000000                            0.000000 ecgGl,{  
Tilt X tolerance on surfaces 1 through 3 (degrees) 8E9W\@\  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314
is,r:  
Change in Focus                :       0.000000                            0.000000 v\gCgx=%j  
Tilt Y tolerance on surfaces 1 through 3 (degrees) Mk"V%)1k  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 //\UthOT  
Change in Focus                :       0.000000                            0.000000 ;q6FdS  
Decenter X tolerance on surface 1 %}%vey  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 ;}=[( eqA  
Change in Focus                :       0.000000                            0.000000 8LouCv(>  
Decenter Y tolerance on surface 1 T-L;iH~0  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 hc4W|Ofj  
Change in Focus                :       0.000000                            0.000000 |K%nVcR=  
Tilt X tolerance on surface (degrees) 1 ]\Tcy[5  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 1]lm0bfs  
Change in Focus                :       0.000000                            0.000000 Tfba3+V  
Tilt Y tolerance on surface (degrees) 1 &v
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TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851
DMY?'Nts!  
Change in Focus                :       0.000000                            0.000000 (!0=~x|Z[  
Decenter X tolerance on surface 2 ua-cX3E  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 c>*RQ4vE  
Change in Focus                :       0.000000                            0.000000 aykNH>#Po  
Decenter Y tolerance on surface 2
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TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 '[h|f  
Change in Focus                :       0.000000                            0.000000 oU.LYz_  
Tilt X tolerance on surface (degrees) 2 kN)m"}gX  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Y:0SrB!\  
Change in Focus                :       0.000000                            0.000000 fEl,jA  
Tilt Y tolerance on surface (degrees) 2 Ba],ONM4k  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324
h6dV
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Change in Focus                :       0.000000                            0.000000 ^dzg'6M  
Decenter X tolerance on surface 3 [foZO&+!  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 `<C/-Au  
Change in Focus                :       0.000000                            0.000000 \HzI*|*A  
Decenter Y tolerance on surface 3 uW8LG\Z>D5  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 wER>a (  
Change in Focus                :       0.000000                            0.000000 m-Uq6_e  
Tilt X tolerance on surface (degrees) 3 v_gQCS  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 `.FvuwP  
Change in Focus                :       0.000000                            0.000000 cIO7RD$8  
Tilt Y tolerance on surface (degrees) 3 Xh,{/5m  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 dfDz/sD*  
Change in Focus                :       0.000000                            0.000000 P>dMET  
Irregularity of surface 1 in fringes /Wh} ;YTv^  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ^]$x/1I;  
Change in Focus                :       0.000000                            0.000000 )k.[Ve  
Irregularity of surface 2 in fringes 'y [eH  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 J/j?;qx]j  
Change in Focus                :       0.000000                            0.000000 R18jju>Zr  
Irregularity of surface 3 in fringes _d'x6$Jg
 
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 (=H%VXQH  
Change in Focus                :       0.000000                            0.000000 (o1*7_]e  
Index tolerance on surface 1 m q`EMOH  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 6BihZ
|H04  
Change in Focus                :       0.000000                            0.000000 ;J~NfL  
Index tolerance on surface 2 zUM;Qwl  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Bf;dp`(/
 
Change in Focus                :       0.000000                           -0.000000 99@uU[&IJ  
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Worst offenders: 3%]%c6  
Type                      Value      Criterion        Change gp:,DC?(  
TSTY   2            -0.20000000     0.35349910    -0.19053324 Zu\(XN?62  
TSTY   2             0.20000000     0.35349910    -0.19053324 x?:[:Hf   
TSTX   2            -0.20000000     0.35349910    -0.19053324 &k /uR;yw  
TSTX   2             0.20000000     0.35349910    -0.19053324 VfJYYR  
TSTY   1            -0.20000000     0.42678383    -0.11724851 jmbwV,@Q2  
TSTY   1             0.20000000     0.42678383    -0.11724851  iK$)Iy0  
TSTX   1            -0.20000000     0.42678383    -0.11724851 I_(
'M
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TSTX   1             0.20000000     0.42678383    -0.11724851 _-&\~w  
TSTY   3            -0.20000000     0.42861670    -0.11541563 Cg/L/0Ak  
TSTY   3             0.20000000     0.42861670    -0.11541563 [a;U'v*  
u=h:d+rq@  
Estimated Performance Changes based upon Root-Sum-Square method: U5]{`C0H?  
Nominal MTF                 :     0.54403234 i2SR.{&  
Estimated change            :    -0.36299231 njv
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Estimated MTF               :     0.18104003 -aDGXQM{~  
>;eWgQ6V  
Compensator Statistics: ugEh}3  
Change in back focus: MO+g*N  
Minimum            :        -0.000000 XYtDovbv&  
Maximum            :         0.000000 G};os+FxF  
Mean               :        -0.000000 CA)DQYp{  
Standard Deviation :         0.000000 `H6-g=C  
`Ym7XF&  
Monte Carlo Analysis: 6f
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Number of trials: 20 8<Cu S  
|*5Kfxq  
Initial Statistics: Normal Distribution r#^/qs(~  
sas}k7m"  
  Trial       Criterion        Change &13qlc6  
      1     0.42804416    -0.11598818 n0_q-
8r  
Change in Focus                :      -0.400171 Y<0;;tVf4U  
      2     0.54384387    -0.00018847 -y70-K3  
Change in Focus                :       1.018470 5o 4\Jwt  
      3     0.44510003    -0.09893230 dd#=_xe  
Change in Focus                :      -0.601922 96UL](l(`  
      4     0.18154684    -0.36248550 Vp*#,(_G:  
Change in Focus                :       0.920681 A*jU&3#  
      5     0.28665820    -0.25737414 )mw#MTv<[  
Change in Focus                :       1.253875 B#Cb`b"  
      6     0.21263372    -0.33139862 fmf3Hp@  
Change in Focus                :      -0.903878 S"ZH5O(  
      7     0.40051424    -0.14351809 YIv!\`^ \  
Change in Focus                :      -1.354815 0b%"=J2/p.  
      8     0.48754161    -0.05649072 ~Rd,jfx  
Change in Focus                :       0.215922 pj:s+7"t  
      9     0.40357468    -0.14045766 vt@5Hb)  
Change in Focus                :       0.281783 "c8 -xG  
     10     0.26315315    -0.28087919 P` Hxj> {  
Change in Focus                :      -1.048393 ?ACflU_k  
     11     0.26120585    -0.28282649 64Gd^.Z  
Change in Focus                :       1.017611 u`I&&  
     12     0.24033815    -0.30369419 I8;xuutc  
Change in Focus                :      -0.109292 h/E+r:2]  
     13     0.37164046    -0.17239188 o!W 71  
Change in Focus                :      -0.692430 0Q?XU.v  
     14     0.48597489    -0.05805744 `yYoVu*  
Change in Focus                :      -0.662040 e
 P]L  
     15     0.21462327    -0.32940907 {"T$jV:GB  
Change in Focus                :       1.611296 -FRMal4Pg0  
     16     0.43378226    -0.11025008 ~NT2QY5!K  
Change in Focus                :      -0.640081 5VD(fW[OW]  
     17     0.39321881    -0.15081353 iV#sMJN9  
Change in Focus                :       0.914906 f]Jn\7j4  
     18     0.20692530    -0.33710703 \ng!qN  
Change in Focus                :       0.801607 nBw4YDR!  
     19     0.51374068    -0.03029165 _L}k.  
Change in Focus                :       0.947293 Dv~W!T i  
     20     0.38013374    -0.16389860 d:C|laZHn  
Change in Focus                :       0.667010 xNlxi  
Jg} w{,  
Number of traceable Monte Carlo files generated: 20 xQLVFgd  
g=*'kj7c3  
Nominal     0.54403234 m)"gj**|y  
Best        0.54384387    Trial     2 {m%]`0
 
Worst       0.18154684    Trial     4 %d-|C.  
Mean        0.35770970 J @eu]?h  
Std Dev     0.11156454 (QS4<J"  
.[mI9dc  
8@b,>l$  
Compensator Statistics: @JB9qT  
Change in back focus: S7i,oP7  
Minimum            :        -1.354815 F|mppY'<J  
Maximum            :         1.611296 /e|vz^#+1,  
Mean               :         0.161872 N_jpCCG~  
Standard Deviation :         0.869664 P){b"`f  
D,R"P }G  
90% >       0.20977951               '" MT$MrT  
80% >       0.22748071               R( 2,1f=d  
50% >       0.38667627               vndD#/lXq  
20% >       0.46553746               ;iA6[uz  
10% >       0.50064115                3|++2Z{},  
>|j8j:S[  
End of Run. ;t6)(d4z?  
LtrE;+%2oz  
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 w3hG\2)[HS  

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 o2'^MxKb T  
w?eJVi@w{  
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                 w *Txc}  
80% >       0.22748071                 6}/m~m  
50% >       0.38667627                 <>l!  
20% >       0.46553746                 f.e4 C,  
10% >       0.50064115 rCH? R  
Lb=4\ _  
最后这个数值是MTF值呢，还是MTF的公差？ 5Sh.4A\  
UL3++bt  
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？？？   &sA@!  
7eU|iDYo  
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  : \*x=q20  
90% >       0.20977951                 maINp"#  
80% >       0.22748071                 6~y7A<[^  
50% >       0.38667627                 P;~P:qKd  
20% >       0.46553746                 6( ~DS9  
10% >       0.50064115 P6([[mmG  
....... r<XlIi  

;=oGg%@aP  
;d{lvKk  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   QnPgp(d<  
Mode                : Sensitivities 3V2w1CERE  
Sampling            : 2 nbM7 >tnsk  
Nominal Criterion   : 0.54403234 e)x;3r"j  
Test Wavelength     : 0.6328 ;rJ  
/naGn@m5u  
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？ NA`E
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`'^&* 7,  
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