[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 iVA=D&eZ  
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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 lF~!F<^9  
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图片:2.jpg

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然后运行分析的结果如下： /~pB_l  
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Analysis of Tolerances ?~/_&=NSx  
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File : E:\光学设计资料\zemax练习\f500.ZMX JsDT  
Title: _C@<*L=Q  
Date : TUE JUN 21 2011 ;I~UQgE6H  
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Units are Millimeters. '}E"Mdb  
All changes are computed using linear differences. ,soXX_Y>  
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Paraxial Focus compensation only. iwI}  
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WARNING: Solves should be removed prior to tolerancing. [#+klP$  
Nzl`mx16  
Mnemonics: TmEh$M  
TFRN: Tolerance on curvature in fringes. P7*?E*   
TTHI: Tolerance on thickness. @^nE^;  
TSDX: Tolerance on surface decentering in x. n\u3$nGL1`  
TSDY: Tolerance on surface decentering in y. B*n_ VBd  
TSTX: Tolerance on surface tilt in x (degrees). U[6 ~ad a  
TSTY: Tolerance on surface tilt in y (degrees). `Wp y6o  
TIRR: Tolerance on irregularity (fringes). 8r48+_y3u  
TIND: Tolerance on Nd index of refraction. 0xUn#&A~  
TEDX: Tolerance on element decentering in x. z;\,
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TEDY: Tolerance on element decentering in y. Ie4Xk  
TETX: Tolerance on element tilt in x (degrees). !jRs5{n^Ol  
TETY: Tolerance on element tilt in y (degrees). xOKf|  
M7//*Q'?  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. =:m6ge@C&H  
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WARNING: Boundary constraints on compensators will be ignored. a<P?4tbF  
DlQ*'PX7  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm e%^PVi  
Mode                : Sensitivities 4_ kg/  
Sampling            : 2 P>_ r6C  
Nominal Criterion   : 0.54403234 cCqmrjUmV  
Test Wavelength     : 0.6328 WTUC\}#E\  
IQ5'4zQg=  
tW%!|T5/  
Fields: XY Symmetric Angle in degrees /<CgSW}  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY ;;mr?'R  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 ?F9c6$|  
N`+@_.iBX  
Sensitivity Analysis: )No>Q :t  
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| v[<;z(7Qk  
Type                      Value      Criterion        Change          Value      Criterion        Change z W*Z  
Fringe tolerance on surface 1 ef:YYt{|q  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 \6vr)1~N>  
Change in Focus                :      -0.000000                            0.000000 8!qzG4F/  
Fringe tolerance on surface 2 'v_k#%  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 ~Q+J1S]Fs  
Change in Focus                :       0.000000                            0.000000 dQ
_yb+<  
Fringe tolerance on surface 3 X"S")BQ q  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 i:
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Change in Focus                :      -0.000000                            0.000000 2xt$w%  
Thickness tolerance on surface 1 }nMp.7b  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 jB3Rue:+g  
Change in Focus                :       0.000000                            0.000000 D4PjE@D"H  
Thickness tolerance on surface 2 ML:H\  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 #* Iyvx  
Change in Focus                :       0.000000                           -0.000000
Y >U_l:_^  
Decenter X tolerance on surfaces 1 through 3 "/{H=X3was  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 E$s?)  
Change in Focus                :       0.000000                            0.000000 ah15,<j  
Decenter Y tolerance on surfaces 1 through 3 AV;x'H7G  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 Zn]!*}  
Change in Focus                :       0.000000                            0.000000 oTk?a!Q  
Tilt X tolerance on surfaces 1 through 3 (degrees) =S|dzgS/  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 !z"nJC  
Change in Focus                :       0.000000                            0.000000 IV|})[n*  
Tilt Y tolerance on surfaces 1 through 3 (degrees) u
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TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 oC|']r6  
Change in Focus                :       0.000000                            0.000000 MmD1@fW32#  
Decenter X tolerance on surface 1 Df=Xbf>jt9  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 o=Ia{@  
Change in Focus                :       0.000000                            0.000000 Wqas1yL_  
Decenter Y tolerance on surface 1 T;{"lp.  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 C$^WW}S  
Change in Focus                :       0.000000                            0.000000 7loIjT7  
Tilt X tolerance on surface (degrees) 1 [*d<LAnuWP  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 m&k l_f7  
Change in Focus                :       0.000000                            0.000000 Wrs6t  
Tilt Y tolerance on surface (degrees) 1 %VwkYAgA  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 !.[H!-V.  
Change in Focus                :       0.000000                            0.000000 RpU.v `
 
Decenter X tolerance on surface 2 l vfplA  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 )q>q
]eHz  
Change in Focus                :       0.000000                            0.000000 qw}. QwPT  
Decenter Y tolerance on surface 2 52'0l>  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 D[<~^R;*  
Change in Focus                :       0.000000                            0.000000 58gkE94  
Tilt X tolerance on surface (degrees) 2 QI6=[  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 [}Y_O*C !  
Change in Focus                :       0.000000                            0.000000 @T&w nk  
Tilt Y tolerance on surface (degrees) 2 'rSJ9Mw"x  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Fqg*H1I[  
Change in Focus                :       0.000000                            0.000000 mLH,6rO9  
Decenter X tolerance on surface 3 G!g];7PG(  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 {i/7Nx
 
Change in Focus                :       0.000000                            0.000000 O*m9qF<  
Decenter Y tolerance on surface 3 eD0|6P;Ei  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 .pPtBqp  
Change in Focus                :       0.000000                            0.000000 7 MG<!U  
Tilt X tolerance on surface (degrees) 3 iB3C.wd-  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 k5eTfaxl  
Change in Focus                :       0.000000                            0.000000 {lNG:o  
Tilt Y tolerance on surface (degrees) 3 yIqRSqM  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 RwDXOdg
u  
Change in Focus                :       0.000000                            0.000000 |snWO0iF  
Irregularity of surface 1 in fringes mjJ/rx{kbw  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 {h~<!
sEX  
Change in Focus                :       0.000000                            0.000000 jYnP)xX;  
Irregularity of surface 2 in fringes |]tsf /SA  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 |jyD@Q,4  
Change in Focus                :       0.000000                            0.000000 k;pU8y6Y  
Irregularity of surface 3 in fringes BD&AtOj[,  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 ]
RTK:%  
Change in Focus                :       0.000000                            0.000000 s+&iH  
Index tolerance on surface 1 i?|b:lcV  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 Y!3i3D  
Change in Focus                :       0.000000                            0.000000 LqoH]AcN  
Index tolerance on surface 2 ]h}O&K/  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 PvVn}i  
Change in Focus                :       0.000000                           -0.000000 %DuSco"  
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Worst offenders: GW!%DT  
Type                      Value      Criterion        Change Pt?d+aBtV  
TSTY   2            -0.20000000     0.35349910    -0.19053324 ts;C:.X  
TSTY   2             0.20000000     0.35349910    -0.19053324 ~uh,R-Q$  
TSTX   2            -0.20000000     0.35349910    -0.19053324 1JF>0ijU@  
TSTX   2             0.20000000     0.35349910    -0.19053324 |k=5`WG  
TSTY   1            -0.20000000     0.42678383    -0.11724851 L?r\J8Ch<  
TSTY   1             0.20000000     0.42678383    -0.11724851 J9XV:)Yv#  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ,<<HkEMS  
TSTX   1             0.20000000     0.42678383    -0.11724851 fx= %e  
TSTY   3            -0.20000000     0.42861670    -0.11541563 rlXMrn  
TSTY   3             0.20000000     0.42861670    -0.11541563 tz_WxOQ0  
iK9#{1BpML  
Estimated Performance Changes based upon Root-Sum-Square method: E9:p A5H-j  
Nominal MTF                 :     0.54403234 bh UghHT  
Estimated change            :    -0.36299231 i2n66d  
Estimated MTF               :     0.18104003 yrV]I(Xe  
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Compensator Statistics: f4&k48Ds  
Change in back focus: UszR. Z  
Minimum            :        -0.000000 d6{
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Maximum            :         0.000000 F/0x`l  
Mean               :        -0.000000 S<"`9r)av  
Standard Deviation :         0.000000 4zx_L8#Z  
:1e'22[=.  
Monte Carlo Analysis: ]M/*Beh  
Number of trials: 20 cT3s{k  
9H,Ec,.  
Initial Statistics: Normal Distribution BH^8!7dkT  
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  Trial       Criterion        Change bTc'E#  
      1     0.42804416    -0.11598818 meR5E?Fm  
Change in Focus                :      -0.400171 ~:):.5o  
      2     0.54384387    -0.00018847 r+;AEN48  
Change in Focus                :       1.018470 N="H 06t  
      3     0.44510003    -0.09893230 Rb_+C  
Change in Focus                :      -0.601922 BV6 U -  
      4     0.18154684    -0.36248550 R4[dh.lf  
Change in Focus                :       0.920681 Nzel^~  
      5     0.28665820    -0.25737414 +@#k<.yqn  
Change in Focus                :       1.253875 =.f<"P51k  
      6     0.21263372    -0.33139862 L6"?p-:@'  
Change in Focus                :      -0.903878 P>;uS
  
      7     0.40051424    -0.14351809 5.FAuzz  
Change in Focus                :      -1.354815
LOlj8T8Z  
      8     0.48754161    -0.05649072 eVujur$P  
Change in Focus                :       0.215922 ,: 4+hJ<q  
      9     0.40357468    -0.14045766 %XK<[BF  
Change in Focus                :       0.281783 `~{0  
     10     0.26315315    -0.28087919 il>XV>  
Change in Focus                :      -1.048393 #;9n_)  
     11     0.26120585    -0.28282649 1[H1l;  
Change in Focus                :       1.017611 <[<]+r&*  
     12     0.24033815    -0.30369419 h6C:`0o  
Change in Focus                :      -0.109292 -MT.qhx  
     13     0.37164046    -0.17239188 TH#5j.uUs  
Change in Focus                :      -0.692430 `=rDB7!$yL  
     14     0.48597489    -0.05805744 i 79;;9M  
Change in Focus                :      -0.662040 {B+{2;Zk  
     15     0.21462327    -0.32940907 zHW}A `Rz  
Change in Focus                :       1.611296 :} 9Lb)Yp  
     16     0.43378226    -0.11025008 YztW1GvI  
Change in Focus                :      -0.640081 PR*qyELu  
     17     0.39321881    -0.15081353 ;mLbgiqQ J  
Change in Focus                :       0.914906 ZsepTtY  
     18     0.20692530    -0.33710703 ck\gazo~q  
Change in Focus                :       0.801607 jq"iLgEMO  
     19     0.51374068    -0.03029165 9Z;"9$+M  
Change in Focus                :       0.947293 u!K5jqP  
     20     0.38013374    -0.16389860 >KMTxHE`+  
Change in Focus                :       0.667010 agMI$  
%)@3V8OI  
Number of traceable Monte Carlo files generated: 20 0xe*\CAo  
>ISN2Kn   
Nominal     0.54403234 iH[ .u{h  
Best        0.54384387    Trial     2 SY
miDR  
Worst       0.18154684    Trial     4 !BikqTM  
Mean        0.35770970 )#_:5^1  
Std Dev     0.11156454 2v9T&xo=  
$7JWA9#N!  
)k'4]=d <  
Compensator Statistics: ;L.RfP"5<  
Change in back focus: #{o
GmzG!  
Minimum            :        -1.354815 ThmN^N  
Maximum            :         1.611296 NY!"?Zko  
Mean               :         0.161872 5/"&C-t  
Standard Deviation :         0.869664 vaOCH*}h  
~G*eJc0S:  
90% >       0.20977951               zQhc V  
80% >       0.22748071               S6pvbaMZ  
50% >       0.38667627               [_SV$Jz  
20% >       0.46553746               (S4[,Sx6E  
10% >       0.50064115                C.}Vm};M  
qD/X
%`>Q  
End of Run. 
FeAMt  
4x%R4tk  
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 pswEIa  

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 6}9`z8  
tfb_K4h6,  
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                 9q=\_[\[  
80% >       0.22748071                 BDCFToSf|  
50% >       0.38667627                 lh?TEQ  
20% >       0.46553746                 oA1d8*i^E  
10% >       0.50064115 D>~S-]  
cA8"Ft{P)  
最后这个数值是MTF值呢，还是MTF的公差？ 7<ZCeM2x  
?{Gf'Y}y&  
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？？？   ;:)?@IuSy  
)(&WhZc Z  
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  : j;|rI`67~  
90% >       0.20977951                 HZ#<+~J  
80% >       0.22748071                 #SzCd&hI  
50% >       0.38667627                 BpGK`0H  
20% >       0.46553746                 SRixT+E  
10% >       0.50064115 ^h:%%\2  
....... t&r-;sH^[  

)i;o\UU  
/kAu&}  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   kc3dWWPe  
Mode                : Sensitivities ~olta\|  
Sampling            : 2 kO]],Vy`  
Nominal Criterion   : 0.54403234 pMB~Lt9  
Test Wavelength     : 0.6328 i_? S#L]h  
}#[MV+D  
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？ ^cE|o&Rm;  
g|W|>`>  
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