[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 R'8S)'l  
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然后添加了默认公差分析，基本没变 _l2_) ~  
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然后运行分析的结果如下： 2.vmZaKP  
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Analysis of Tolerances 1OV] W f  
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File : E:\光学设计资料\zemax练习\f500.ZMX \01kK)  
Title: 4o"?QV:  
Date : TUE JUN 21 2011 &TL"Hd  
7!wc'~;  
Units are Millimeters. 3D^cPkX  
All changes are computed using linear differences. p{:y?0pGN  
*Ms&WYN-  
Paraxial Focus compensation only. !cdY`f6x  
>TiEYMW  
WARNING: Solves should be removed prior to tolerancing. Mdh]qKw  
mn\A)RQ  
Mnemonics: %hlgLM  
TFRN: Tolerance on curvature in fringes. H23 O]r  
TTHI: Tolerance on thickness. wqT9m*VK  
TSDX: Tolerance on surface decentering in x. "n)AlAV@  
TSDY: Tolerance on surface decentering in y. 6}V
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TSTX: Tolerance on surface tilt in x (degrees). ooBBg@  
TSTY: Tolerance on surface tilt in y (degrees). *?$M=tH  
TIRR: Tolerance on irregularity (fringes). O /:FY1  
TIND: Tolerance on Nd index of refraction. i+pQ 7wx  
TEDX: Tolerance on element decentering in x. .;qh>Gt  
TEDY: Tolerance on element decentering in y. wX_~H*m?  
TETX: Tolerance on element tilt in x (degrees). 8vtembna4  
TETY: Tolerance on element tilt in y (degrees). bub6{MQW8e  
NqGSoOjIO2  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. 7\[fjCg\w  
bwcr/J(Nb  
WARNING: Boundary constraints on compensators will be ignored. ~I9o*cq  
M<*WC{  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm U=7nz|  
Mode                : Sensitivities ,I ][  
Sampling            : 2 =FI[/"476  
Nominal Criterion   : 0.54403234 BvH?d]%  
Test Wavelength     : 0.6328 [~X&J#  
$4~Z]-38#A  
8qaU[u&$  
Fields: XY Symmetric Angle in degrees e$2P/6k>  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 1Lk(G9CoY  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 d0C _:_  
VumM`SH  
Sensitivity Analysis: )B)f`(SA"<  
c8Ud<M .  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| n\V7^N  
Type                      Value      Criterion        Change          Value      Criterion        Change {qbe ye!  
Fringe tolerance on surface 1 gu%i|-}  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 -%gEND-AP  
Change in Focus                :      -0.000000                            0.000000 , ,ng]&%i  
Fringe tolerance on surface 2 2ZEGE+0  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ,G5[?H;ZN  
Change in Focus                :       0.000000                            0.000000 -u
cgET`  
Fringe tolerance on surface 3 UV0[S8A  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 EU>`$M&w-  
Change in Focus                :      -0.000000                            0.000000 %[s%H)e)  
Thickness tolerance on surface 1 yN0`JI  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 t*-cX  
Change in Focus                :       0.000000                            0.000000 h3&|yS|  
Thickness tolerance on surface 2 Mp>(cs  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 y+w,j]  
Change in Focus                :       0.000000                           -0.000000 Hk@Gkx_  
Decenter X tolerance on surfaces 1 through 3 {V[}#Mf  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 m4m|?  
Change in Focus                :       0.000000                            0.000000 u%+k\/Scp.  
Decenter Y tolerance on surfaces 1 through 3 g}W|q"l?i  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 "om7 :d  
Change in Focus                :       0.000000                            0.000000 .-/IV^lGv  
Tilt X tolerance on surfaces 1 through 3 (degrees) :$,MAQ'9  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 f,Dic%$q  
Change in Focus                :       0.000000                            0.000000 jl&Nphp  
Tilt Y tolerance on surfaces 1 through 3 (degrees) ;RX u}pd  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +egwZ$5I  
Change in Focus                :       0.000000                            0.000000 SY[3O  
Decenter X tolerance on surface 1 O!{YwE8x9  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 XD|g G  
Change in Focus                :       0.000000                            0.000000 l v hJ  
Decenter Y tolerance on surface 1 s</qT6@  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 z\A ),;  
Change in Focus                :       0.000000                            0.000000 uf9&o#  
Tilt X tolerance on surface (degrees) 1 jVQ89vf ~  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 h]
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Change in Focus                :       0.000000                            0.000000 3Cc#{X-+  
Tilt Y tolerance on surface (degrees) 1  0.0-rd>  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 )%MC*Z:^  
Change in Focus                :       0.000000                            0.000000 oD9n5/ozo  
Decenter X tolerance on surface 2 c>{QTI:]  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 _`&l46  
Change in Focus                :       0.000000                            0.000000 ,NS*`F[O  
Decenter Y tolerance on surface 2 <?5|(Q"@:  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 SeDk/}/~e  
Change in Focus                :       0.000000                            0.000000 9Pe$}N  
Tilt X tolerance on surface (degrees) 2 W_JO~P  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 vQK/xg  
Change in Focus                :       0.000000                            0.000000 ]lBCK  
Tilt Y tolerance on surface (degrees) 2 !Kg']4  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 qx[c
0X!  
Change in Focus                :       0.000000                            0.000000 ]4en|Aq  
Decenter X tolerance on surface 3 'u;O2$  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 &k%>u[Bo  
Change in Focus                :       0.000000                            0.000000 l[ $bn!_e  
Decenter Y tolerance on surface 3 tLa%8@;'$  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~Ss,he]Er  
Change in Focus                :       0.000000                            0.000000 I*3}e
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Tilt X tolerance on surface (degrees) 3 n*=#jL  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 o#,^
7ln  
Change in Focus                :       0.000000                            0.000000 xi(\=LbhY  
Tilt Y tolerance on surface (degrees) 3 ]{\ttb%GX  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 diY7<u#  
Change in Focus                :       0.000000                            0.000000 9"]#.A^Q*  
Irregularity of surface 1 in fringes ikV;]ox  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 7 s5(eQI  
Change in Focus                :       0.000000                            0.000000 zZ8*a\  
Irregularity of surface 2 in fringes C$1W+(  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 */n8T]s  
Change in Focus                :       0.000000                            0.000000 &~Hed_  
Irregularity of surface 3 in fringes K8&;B)VT>  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ZDW=>}~_y  
Change in Focus                :       0.000000                            0.000000 IUFc_uL@\  
Index tolerance on surface 1 qGV_oa74  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 z m$Sw0#(  
Change in Focus                :       0.000000                            0.000000 >9dD7FH  
Index tolerance on surface 2 ggx_h  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 6
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Change in Focus                :       0.000000                           -0.000000 *b. >  
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Worst offenders: bT^dtEr[  
Type                      Value      Criterion        Change \H@1VgmR;  
TSTY   2            -0.20000000     0.35349910    -0.19053324 b
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TSTY   2             0.20000000     0.35349910    -0.19053324 @5S'5)4pB  
TSTX   2            -0.20000000     0.35349910    -0.19053324 Lr$Mk#'B  
TSTX   2             0.20000000     0.35349910    -0.19053324 Wjw,LwB  
TSTY   1            -0.20000000     0.42678383    -0.11724851 !{t|z=Qg  
TSTY   1             0.20000000     0.42678383    -0.11724851 Ey|_e3Lf[  
TSTX   1            -0.20000000     0.42678383    -0.11724851 vyIH<@@p7  
TSTX   1             0.20000000     0.42678383    -0.11724851 rQ
VX^  
TSTY   3            -0.20000000     0.42861670    -0.11541563 Q,&Li+u|  
TSTY   3             0.20000000     0.42861670    -0.11541563 WQ.0}n}d  
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Estimated Performance Changes based upon Root-Sum-Square method: VWvSt C  
Nominal MTF                 :     0.54403234 ro{!X,_$,  
Estimated change            :    -0.36299231 F^75y?  
Estimated MTF               :     0.18104003 rR> X<  
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Compensator Statistics: t~->&Ja   
Change in back focus: I4X9RYB6c  
Minimum            :        -0.000000 T$xBH  
Maximum            :         0.000000 l4oyF|oJTH  
Mean               :        -0.000000 `GCoi ?n7  
Standard Deviation :         0.000000 ~P1~:AT  
YB5"i9T2  
Monte Carlo Analysis: 6QX m]<  
Number of trials: 20 go uU  
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Initial Statistics: Normal Distribution MY^{[#Q  
v3I^81  
  Trial       Criterion        Change _fHml  
      1     0.42804416    -0.11598818 "La;$7ds  
Change in Focus                :      -0.400171 aix
X/se  
      2     0.54384387    -0.00018847 Xo34~V@(  
Change in Focus                :       1.018470 *j%x  
      3     0.44510003    -0.09893230 >X*tMhcb  
Change in Focus                :      -0.601922 hJ@vlMW  
      4     0.18154684    -0.36248550 6Yj{% G  
Change in Focus                :       0.920681 mLX/xM/T?/  
      5     0.28665820    -0.25737414 -b(DPte  
Change in Focus                :       1.253875 P=QxfX0B  
      6     0.21263372    -0.33139862 *VZ|Idp  
Change in Focus                :      -0.903878 /,Xl8<~#  
      7     0.40051424    -0.14351809 >NRppPqL  
Change in Focus                :      -1.354815 iVXt@[  
      8     0.48754161    -0.05649072 2?JV "O=  
Change in Focus                :       0.215922 r7m~.M+W"  
      9     0.40357468    -0.14045766 \#{PV\x:Nn  
Change in Focus                :       0.281783 L8VOiK=,  
     10     0.26315315    -0.28087919 ZSC*{dD$E  
Change in Focus                :      -1.048393 P8tdT3*6/  
     11     0.26120585    -0.28282649 Y}:~6`-jj  
Change in Focus                :       1.017611 Z}J5sifr  
     12     0.24033815    -0.30369419 <+roY"  
Change in Focus                :      -0.109292 b2m={q(s  
     13     0.37164046    -0.17239188 EhcJE;S)  
Change in Focus                :      -0.692430 Y2u\~.;oq  
     14     0.48597489    -0.05805744 C0wtMD:G  
Change in Focus                :      -0.662040 )kpEcMlR  
     15     0.21462327    -0.32940907 qO#3{kW  
Change in Focus                :       1.611296 4ax{Chn  
     16     0.43378226    -0.11025008 -50DGA,K6  
Change in Focus                :      -0.640081 mptFd  
     17     0.39321881    -0.15081353 {M]_]L{&7  
Change in Focus                :       0.914906 sdFHr4  
     18     0.20692530    -0.33710703 Joow{75K  
Change in Focus                :       0.801607 uoS:-v}/Y~  
     19     0.51374068    -0.03029165 tn]nl!_@  
Change in Focus                :       0.947293 DXs an  
     20     0.38013374    -0.16389860 8tj]@
GE  
Change in Focus                :       0.667010 (bsx|8[  
(2g a:}K  
Number of traceable Monte Carlo files generated: 20 9`tK9  
fF@w:;u  
Nominal     0.54403234 9LDv?kYr  
Best        0.54384387    Trial     2 *WwM"NFHDd  
Worst       0.18154684    Trial     4 mMAN*}`O  
Mean        0.35770970 VmS_(bM  
Std Dev     0.11156454 YKyno?m  
,2@o`R.27  
xye-Z\-t  
Compensator Statistics: 2|nm> 4  
Change in back focus: ,"v&r(  
Minimum            :        -1.354815 D|-]<r1"  
Maximum            :         1.611296 Y t(D  
Mean               :         0.161872  ;
Shu  
Standard Deviation :         0.869664 mUYRioNj  
Br1R++]  
90% >       0.20977951               NkZG  
80% >       0.22748071               -ss= c
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50% >       0.38667627               akj<*,  
20% >       0.46553746               spEdq}  
10% >       0.50064115                UcRP/LR%C  
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End of Run. O0 'iq^g  
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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 SE'Im  
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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 kSAVFzUS  
"+HJ/8Dd1  
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                 l;-Ml{}|0  
80% >       0.22748071                 \Kl20?  
50% >       0.38667627                 i|:!I)(lh  
20% >       0.46553746                
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10% >       0.50064115 \!u<)kkyT  
;!n>  
最后这个数值是MTF值呢，还是MTF的公差？ ZW4
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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？？？   f"6W ;b2L.  
ImXYI7PL  
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  : g p:0Y  
90% >       0.20977951                 lV\iYX2#  
80% >       0.22748071                 9nFL70  
50% >       0.38667627                 =B}IsBn'J  
20% >       0.46553746                 E)-;sFz  
10% >       0.50064115 A@V$~&JCL5  
....... ,,Qg"
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Ema[M5$R  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   ?lC>E[  
Mode                : Sensitivities ,U""m7   
Sampling            : 2 B $u/n  
Nominal Criterion   : 0.54403234 \c2x udU  
Test Wavelength     : 0.6328 A4zI1QF  
pS$9mzY  
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？ bTJ<8q  
.Y6v#VI  
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