[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 $:9t(X)H  
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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 #;[G>-tC  
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图片:2.jpg

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然后运行分析的结果如下： hnj\|6L  
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Analysis of Tolerances 4~fYG|a  
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File : E:\光学设计资料\zemax练习\f500.ZMX HDe\Oty_  
Title: #M-!/E  
Date : TUE JUN 21 2011 N J3;[qJ  
G m~ ./-  
Units are Millimeters. \"lz,bT  
All changes are computed using linear differences. .9
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=LW!$p  
Paraxial Focus compensation only. mLCDN1UO{  
& 3#7>
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WARNING: Solves should be removed prior to tolerancing. 3>O|i2U  
#2tmi1 ya  
Mnemonics: dGKo!;7{  
TFRN: Tolerance on curvature in fringes. +%dXB&9x|Z  
TTHI: Tolerance on thickness. E7Lqa S  
TSDX: Tolerance on surface decentering in x. ">V1II 7  
TSDY: Tolerance on surface decentering in y. SNj-h>&Mha  
TSTX: Tolerance on surface tilt in x (degrees). uwwR$ (\7  
TSTY: Tolerance on surface tilt in y (degrees). YxF@1_g  
TIRR: Tolerance on irregularity (fringes). rN0<y4)!  
TIND: Tolerance on Nd index of refraction. zv]ZEWVzc  
TEDX: Tolerance on element decentering in x. $xO8?  
TEDY: Tolerance on element decentering in y. ~\":o:qyc  
TETX: Tolerance on element tilt in x (degrees). { I#>6  
TETY: Tolerance on element tilt in y (degrees). BP/nK.  
kR=sr/
{  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. mU5Ox4>&9  
W+h2rv  
WARNING: Boundary constraints on compensators will be ignored. BgQEd@cN  
zWY988fX0  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Exb64n-_=  
Mode                : Sensitivities ]!/
  
Sampling            : 2 L(y70T  
Nominal Criterion   : 0.54403234 O}M-6!%<,  
Test Wavelength     : 0.6328 zxR]+9Z
h  
HP# SR';E  
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Fields: XY Symmetric Angle in degrees @*z"Hi>4  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY IO)B3,g  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 P6+ B!pY  
*HoRYCL  
Sensitivity Analysis: ^J
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                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| jTa\I&s,A  
Type                      Value      Criterion        Change          Value      Criterion        Change hGtz[u#p  
Fringe tolerance on surface 1 ]]j^  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 \^)i!@v  
Change in Focus                :      -0.000000                            0.000000 *b{IWOSe^  
Fringe tolerance on surface 2 ';C'9k<P:  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 EBy7wU`S  
Change in Focus                :       0.000000                            0.000000 Ht[$s40P  
Fringe tolerance on surface 3 )vW'g3u_  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 U1 _"D+XB  
Change in Focus                :      -0.000000                            0.000000 V}y]<  
Thickness tolerance on surface 1 juF9:Eah  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 56;u7  
Change in Focus                :       0.000000                            0.000000 :nx+(xgw  
Thickness tolerance on surface 2 wf8{v  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 h/EIFve  
Change in Focus                :       0.000000                           -0.000000 u8-6s+ O  
Decenter X tolerance on surfaces 1 through 3 (*S<2HN5  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 u)@:V)z  
Change in Focus                :       0.000000                            0.000000 ,rMf;/[  
Decenter Y tolerance on surfaces 1 through 3 A@V$~&JCL5  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 |  0  
Change in Focus                :       0.000000                            0.000000 2!#
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Tilt X tolerance on surfaces 1 through 3 (degrees) Xm#W}Y'  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 "OLg2O^  
Change in Focus                :       0.000000                            0.000000 nxZz{&  
Tilt Y tolerance on surfaces 1 through 3 (degrees) 'K7\[if{  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 sOhn@*X  
Change in Focus                :       0.000000                            0.000000 f@i#Znkf*?  
Decenter X tolerance on surface 1 HE&)N clY  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 .W{CJh  
Change in Focus                :       0.000000                            0.000000 eoiz]L  
Decenter Y tolerance on surface 1 Spn[:u@  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 $1.-m{Bd  
Change in Focus                :       0.000000                            0.000000 Z9vMz3^N  
Tilt X tolerance on surface (degrees) 1 C.?^] Y  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 m.D8@[y  
Change in Focus                :       0.000000                            0.000000 ~4fE`-O  
Tilt Y tolerance on surface (degrees) 1
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TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 w)7y{ya$  
Change in Focus                :       0.000000                            0.000000 7yE\,  
Decenter X tolerance on surface 2 6kAAdy}ck  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 \Oq2{Sx\
 
Change in Focus                :       0.000000                            0.000000 Mt.Cj;h@^[  
Decenter Y tolerance on surface 2 Y(UK:LZ'  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 ad}8~6}_&  
Change in Focus                :       0.000000                            0.000000 u+8"W[ZULq  
Tilt X tolerance on surface (degrees) 2 |]G%b[
 
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 W&hW N9iR  
Change in Focus                :       0.000000                            0.000000 U'=8:&  
Tilt Y tolerance on surface (degrees) 2 J _rrc;F  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 'KH+e#?Ar  
Change in Focus                :       0.000000                            0.000000 (WHgB0{  
Decenter X tolerance on surface 3 -,y
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TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 p{,#H/+J  
Change in Focus                :       0.000000                            0.000000 eha|cAq  
Decenter Y tolerance on surface 3 Ar<5UnT  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 a3 }V
/MY  
Change in Focus                :       0.000000                            0.000000 8\s#law  
Tilt X tolerance on surface (degrees) 3 [H*JFKpx  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 jL-2 }XrA  
Change in Focus                :       0.000000                            0.000000 p_I^7 $  
Tilt Y tolerance on surface (degrees) 3 `,}7LfY  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 c^I^jg2v  
Change in Focus                :       0.000000                            0.000000 o< @![P  
Irregularity of surface 1 in fringes  qNJc*@s  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 r;{$x  
Change in Focus                :       0.000000                            0.000000 O}i+1  
Irregularity of surface 2 in fringes kt6)F&;$  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 v@EErF  
Change in Focus                :       0.000000                            0.000000 FO*Gc Z  
Irregularity of surface 3 in fringes @)d_z
WE  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 P2vG)u  
Change in Focus                :       0.000000                            0.000000 )#i@DHt=  
Index tolerance on surface 1 M P8Sd1_=  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 @ujwN([I  
Change in Focus                :       0.000000                            0.000000 Mp/l*"(  
Index tolerance on surface 2 *H!BThft4  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Q/g!h}>(.  
Change in Focus                :       0.000000                           -0.000000 >B6*`3v  
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Worst offenders: *47/BLys<  
Type                      Value      Criterion        Change U~D~C~\2;  
TSTY   2            -0.20000000     0.35349910    -0.19053324 i.^ytbH  
TSTY   2             0.20000000     0.35349910    -0.19053324 z% bH?1^o  
TSTX   2            -0.20000000     0.35349910    -0.19053324 jfG of*  
TSTX   2             0.20000000     0.35349910    -0.19053324 qb[hKp5K6  
TSTY   1            -0.20000000     0.42678383    -0.11724851 8?iI;(  
TSTY   1             0.20000000     0.42678383    -0.11724851 ah*{NR)  
TSTX   1            -0.20000000     0.42678383    -0.11724851 ulxlh8=  
TSTX   1             0.20000000     0.42678383    -0.11724851 %
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TSTY   3            -0.20000000     0.42861670    -0.11541563 J
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TSTY   3             0.20000000     0.42861670    -0.11541563 _tHhS@  
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Estimated Performance Changes based upon Root-Sum-Square method: l/={aF7+  
Nominal MTF                 :     0.54403234 x/?ET1iGt  
Estimated change            :    -0.36299231 1(@$bsgu2  
Estimated MTF               :     0.18104003 bkd`7(r  
:^ywc O   
Compensator Statistics: &%rM|  
Change in back focus: hdDT'+  
Minimum            :        -0.000000 "AUSgVE+h  
Maximum            :         0.000000 t.8r~2(?  
Mean               :        -0.000000 @Fc:9a@  
Standard Deviation :         0.000000 ": vGs_$  
4|K\pCw  
Monte Carlo Analysis: U>lf-iI2B  
Number of trials: 20 Dizz?O  
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Initial Statistics: Normal Distribution 6C2~0b   
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  Trial       Criterion        Change WGz)-IB!PE  
      1     0.42804416    -0.11598818 Imv#7{ndq  
Change in Focus                :      -0.400171 %rb$tKk  
      2     0.54384387    -0.00018847 "`ftcJUd  
Change in Focus                :       1.018470 )I&.6l!#  
      3     0.44510003    -0.09893230 &Pb:P?I  
Change in Focus                :      -0.601922 &B&8$X  
      4     0.18154684    -0.36248550 #DgHF*GG+>  
Change in Focus                :       0.920681 *|S6iSn9R!  
      5     0.28665820    -0.25737414 vS\2zwb}  
Change in Focus                :       1.253875 Nbr$G=U  
      6     0.21263372    -0.33139862 $~1vXe  
Change in Focus                :      -0.903878 yU!1q}L!  
      7     0.40051424    -0.14351809 ,40OCd!  
Change in Focus                :      -1.354815 u79- B-YW^  
      8     0.48754161    -0.05649072 iv>MIdIm  
Change in Focus                :       0.215922 3`cA!
ZVQ  
      9     0.40357468    -0.14045766 l^&#9d  
Change in Focus                :       0.281783 1<G+KC[F  
     10     0.26315315    -0.28087919 N#l2wT  
Change in Focus                :      -1.048393 67iI wY*8'  
     11     0.26120585    -0.28282649 .yy-jf/  
Change in Focus                :       1.017611 ~Fuq{e9`  
     12     0.24033815    -0.30369419 D#LV&4e>.E  
Change in Focus                :      -0.109292 l$/pp  
     13     0.37164046    -0.17239188 2yK">xYY@  
Change in Focus                :      -0.692430 Y]SF0:v!n  
     14     0.48597489    -0.05805744 'O(=Pz  
Change in Focus                :      -0.662040 yIL=jzm`7  
     15     0.21462327    -0.32940907 tq59w  
Change in Focus                :       1.611296 dLp1l2h!0  
     16     0.43378226    -0.11025008 m}'_Poc  
Change in Focus                :      -0.640081 lBbb7*Ljt<  
     17     0.39321881    -0.15081353 E@ :9|5  
Change in Focus                :       0.914906 %[$HX'Y  
     18     0.20692530    -0.33710703 ^+76^*0  
Change in Focus                :       0.801607 g[G/If  
     19     0.51374068    -0.03029165 rk8pL[|  
Change in Focus                :       0.947293 r""rJzFz'  
     20     0.38013374    -0.16389860 9;#RzelSp  
Change in Focus                :       0.667010 V^,gpTyv*  
fF)Q;~_VA  
Number of traceable Monte Carlo files generated: 20 N_T5sZ\  
S-Y{Vi"2  
Nominal     0.54403234 T2Yf7Szp  
Best        0.54384387    Trial     2 Z i6s0Uck  
Worst       0.18154684    Trial     4 x{:U$[_  
Mean        0.35770970 m,Y/ke\  
Std Dev     0.11156454 z&gmaYwq  
FY'0?CT$  

KdCrI@^  
Compensator Statistics: -LiGO#U  
Change in back focus: jUm-!SK}q  
Minimum            :        -1.354815 Hi09?AX  
Maximum            :         1.611296 -{0Pq.v  
Mean               :         0.161872 E /H%q|q  
Standard Deviation :         0.869664 ceG\Q2  
`a&L  
90% >       0.20977951               m~&  
80% >       0.22748071                Gk~aTO  
50% >       0.38667627               hTDGgSG^  
20% >       0.46553746               dq '2y  
10% >       0.50064115                } [#8>T  
,7s>#b'  
End of Run. iL;V5|(sb  
j~N*TXkC  
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 yF)J7
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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 r^ Dm|^f#  
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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                 $?F_Qsy{d  
80% >       0.22748071                 qVh?%c1.Y  
50% >       0.38667627                 M<Bo<,!ua  
20% >       0.46553746                 +(DzE H |  
10% >       0.50064115 3YLK?X8  
h1q3}-  
最后这个数值是MTF值呢，还是MTF的公差？ f1:>H.m`  
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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？？？   }m<+tn3m  
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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  : A~{vja0?  
90% >       0.20977951                 k0FAI0~(  
80% >       0.22748071                 dM}c-=w`  
50% >       0.38667627                 `+."X1  
20% >       0.46553746                 !`H!!Kg0L  
10% >       0.50064115 - ]/=WAOK  
....... tw 3zw`o:  

?1|\(W#  
MYJMZ3qBi  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   lwG)&qyVd  
Mode                : Sensitivities non5e)w3@  
Sampling            : 2 hBz>E 4mEv  
Nominal Criterion   : 0.54403234 W3('1  
Test Wavelength     : 0.6328 Bs '=YK$  
J}-e9vK-#  
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？ n%}#
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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