[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 el<Gd.p.d  
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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 Q(x=;wf5r  
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图片:2.jpg

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然后运行分析的结果如下： ~YNzSkz  
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Analysis of Tolerances Dd0yQgCu  
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File : E:\光学设计资料\zemax练习\f500.ZMX wqm{f~nj=  
Title: ph)=:*A6&  
Date : TUE JUN 21 2011 kLs{B  
`r&Ui%fk;0  
Units are Millimeters. fFC9:9<  
All changes are computed using linear differences. BGfwgI.m  
qDg`4yX.}  
Paraxial Focus compensation only. .rg "(I  
+R$;LtR  
WARNING: Solves should be removed prior to tolerancing. ^4JK4+!Zfq  
rx]Q,;"  
Mnemonics: =|O]X|y-lZ  
TFRN: Tolerance on curvature in fringes. )jwovS?V  
TTHI: Tolerance on thickness. #WUN=u  
TSDX: Tolerance on surface decentering in x. LkafB2y  
TSDY: Tolerance on surface decentering in y. $0{h Uex  
TSTX: Tolerance on surface tilt in x (degrees). p? +!*BZ  
TSTY: Tolerance on surface tilt in y (degrees). Ac*)z#H  
TIRR: Tolerance on irregularity (fringes). J#w=Z>oz<  
TIND: Tolerance on Nd index of refraction. j^Qk\(^#IV  
TEDX: Tolerance on element decentering in x. <b4} B   
TEDY: Tolerance on element decentering in y. C<QpUJ`k  
TETX: Tolerance on element tilt in x (degrees). %;_EWs/z8  
TETY: Tolerance on element tilt in y (degrees). O d6'bO;G  
3?gfDJfE  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. -'
oxenu  
4y.'O  
WARNING: Boundary constraints on compensators will be ignored. )g&nI<Mh  
[$>@f{:  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm Pr1OQbg]8  
Mode                : Sensitivities p&xj7qwp@F  
Sampling            : 2 :hB6-CZkqN  
Nominal Criterion   : 0.54403234 1_xkGc-z<  
Test Wavelength     : 0.6328 7k#>$sY+  
:1UOT'_  
Q[!?SSX%  
Fields: XY Symmetric Angle in degrees cy8r}wD  
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY 0ikA@SAq  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 MD0d  
bLggh]Fh  
Sensitivity Analysis: ~T._v;IT  
sV%=z}n=  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| A|mE3q=  
Type                      Value      Criterion        Change          Value      Criterion        Change djdSD  
Fringe tolerance on surface 1 pP\^bjI
 
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 1?TgI0HS  
Change in Focus                :      -0.000000                            0.000000 mCI5^%*0jQ  
Fringe tolerance on surface 2 NP.qh1{NP  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 .(Z^}  
Change in Focus                :       0.000000                            0.000000 tsB}'+!v#  
Fringe tolerance on surface 3 je:J`4k$  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 !*wd d8
 
Change in Focus                :      -0.000000                            0.000000 +,ld;NM{  
Thickness tolerance on surface 1 :h0!giqoQ  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 I$TD[W  
Change in Focus                :       0.000000                            0.000000 6il+hz2&lH  
Thickness tolerance on surface 2 v49i.c9  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 Me+)2S 9  
Change in Focus                :       0.000000                           -0.000000 .D=#HEshk  
Decenter X tolerance on surfaces 1 through 3 ~ayU\4B  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 {!4ZRNy(k  
Change in Focus                :       0.000000                            0.000000 naY#`xig
 
Decenter Y tolerance on surfaces 1 through 3 X-"0Zc  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 :'!_PN  
Change in Focus                :       0.000000                            0.000000 LKud'  
Tilt X tolerance on surfaces 1 through 3 (degrees) >u`Ci>tY  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 rG B*a8  
Change in Focus                :       0.000000                            0.000000 Ys5Iqj=mp  
Tilt Y tolerance on surfaces 1 through 3 (degrees) |z)7XK  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 SwH#=hg  
Change in Focus                :       0.000000                            0.000000 T!pHT'J  
Decenter X tolerance on surface 1 kgX"I ?>d  
TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 :r_/mzR#  
Change in Focus                :       0.000000                            0.000000 [}l 1`>  
Decenter Y tolerance on surface 1 taSYR$VJ  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 w 3L+7V,!  
Change in Focus                :       0.000000                            0.000000 /jU4mPb;\D  
Tilt X tolerance on surface (degrees) 1 f*[Uq0?  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 ehX4[j6  
Change in Focus                :       0.000000                            0.000000  ZN;fDv  
Tilt Y tolerance on surface (degrees) 1 oFu( J  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 Fz$^CMw5K  
Change in Focus                :       0.000000                            0.000000 |y]8gL^  
Decenter X tolerance on surface 2 `7 J4h9K  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 x1`Jlzrp,  
Change in Focus                :       0.000000                            0.000000
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Decenter Y tolerance on surface 2 aFy'6c}  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 .18MMzdN  
Change in Focus                :       0.000000                            0.000000 $I3}%'`+  
Tilt X tolerance on surface (degrees) 2 {<Vw55)#0Q  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 6)3pnhG9  
Change in Focus                :       0.000000                            0.000000 qEPC]es|T  
Tilt Y tolerance on surface (degrees) 2 `9VRT`e  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Oyjhc<6  
Change in Focus                :       0.000000                            0.000000 z0tm3ovp  
Decenter X tolerance on surface 3 Y#Pg*C8>8  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 flU?6\_UC  
Change in Focus                :       0.000000                            0.000000 ;U<rFs40  
Decenter Y tolerance on surface 3 1&YkRCn0  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ca$K
)=cDW  
Change in Focus                :       0.000000                            0.000000 )>^!X$`3  
Tilt X tolerance on surface (degrees) 3 D +9l$**a  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 3gba~}c)  
Change in Focus                :       0.000000                            0.000000 H*EN199  
Tilt Y tolerance on surface (degrees) 3 ~0gHh
  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 <#:ey^q<  
Change in Focus                :       0.000000                            0.000000 >o!~T}J7  
Irregularity of surface 1 in fringes vF$sVu|B  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 6t`cY  
Change in Focus                :       0.000000                            0.000000 hdH}4W  
Irregularity of surface 2 in fringes H}}C>p"!,  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047 A]s|"Pav,  
Change in Focus                :       0.000000                            0.000000 WQYw@M~4Q!  
Irregularity of surface 3 in fringes m2PI^?|e  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 N/N~>7f  
Change in Focus                :       0.000000                            0.000000 4#wZ#}  
Index tolerance on surface 1  i(n BXV{  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 @7,k0H9Moa  
Change in Focus                :       0.000000                            0.000000 MJI`1*(  
Index tolerance on surface 2 .OSFLY#[?  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 Z {*<Gx  
Change in Focus                :       0.000000                           -0.000000 7F wot&  
6^"Spf]  
Worst offenders: xIa8Ac  
Type                      Value      Criterion        Change OOj}CZ6  
TSTY   2            -0.20000000     0.35349910    -0.19053324 Dt*/tVF  
TSTY   2             0.20000000     0.35349910    -0.19053324 I=9sTR)  
TSTX   2            -0.20000000     0.35349910    -0.19053324 QNgfvy  
TSTX   2             0.20000000     0.35349910    -0.19053324 5TS&NefM
  
TSTY   1            -0.20000000     0.42678383    -0.11724851 xr1,D5  
TSTY   1             0.20000000     0.42678383    -0.11724851 v,A8Mk2s#  
TSTX   1            -0.20000000     0.42678383    -0.11724851 E4N{;'  
TSTX   1             0.20000000     0.42678383    -0.11724851 'P3jUc)  
TSTY   3            -0.20000000     0.42861670    -0.11541563 y` 6!Vj l  
TSTY   3             0.20000000     0.42861670    -0.11541563 [$%O-_x  
Q}:#Hz?U  
Estimated Performance Changes based upon Root-Sum-Square method: {Z(kzJwN  
Nominal MTF                 :     0.54403234 'o]8UD(  
Estimated change            :    -0.36299231 !juh}q&}|  
Estimated MTF               :     0.18104003 |tuh/e@dx  
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Compensator Statistics: )V?:qCuY>  
Change in back focus: L/2,r*LNx$  
Minimum            :        -0.000000 qv.s-@l8  
Maximum            :         0.000000 Ni-@El99  
Mean               :        -0.000000 %oHK=],|1  
Standard Deviation :         0.000000 :"I!$_E'  
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Monte Carlo Analysis: Q?]-/v  
Number of trials: 20 J>p6')Y6~  
S<UWv@`U"  
Initial Statistics: Normal Distribution 7FGi+  
:SvgXMY@  
  Trial       Criterion        Change HGlQZwf  
      1     0.42804416    -0.11598818 B'8/`0^n5  
Change in Focus                :      -0.400171 jPa"|9A  
      2     0.54384387    -0.00018847 &Na,D7A:3I  
Change in Focus                :       1.018470 1paLxR5  
      3     0.44510003    -0.09893230 aGq1YOD[$  
Change in Focus                :      -0.601922 :.aMhyh#*  
      4     0.18154684    -0.36248550 ="J *v>  
Change in Focus                :       0.920681  {B
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      5     0.28665820    -0.25737414 `R6dnbH  
Change in Focus                :       1.253875 U;#9^<^  
      6     0.21263372    -0.33139862 S^T ><C  
Change in Focus                :      -0.903878 |Q?^Ba  
      7     0.40051424    -0.14351809 < wi9   
Change in Focus                :      -1.354815 P+bA>lJd  
      8     0.48754161    -0.05649072 "kd)dy95H  
Change in Focus                :       0.215922 h'
ik19  
      9     0.40357468    -0.14045766 VMIX=gTZ  
Change in Focus                :       0.281783 yXT8:2M  
     10     0.26315315    -0.28087919 F(KsB5OY?  
Change in Focus                :      -1.048393 9wbj}tN\z  
     11     0.26120585    -0.28282649 .W s\%S  
Change in Focus                :       1.017611 D1R$s*{  
     12     0.24033815    -0.30369419 1Y'NG<d_  
Change in Focus                :      -0.109292 wl7 (|\-  
     13     0.37164046    -0.17239188 7!U^?0?/  
Change in Focus                :      -0.692430 #g=
  
     14     0.48597489    -0.05805744 `Vl9/IEk  
Change in Focus                :      -0.662040 O+OUcMa,  
     15     0.21462327    -0.32940907 j9xu21'
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Change in Focus                :       1.611296 5Deo}(3  
     16     0.43378226    -0.11025008 f9D01R fo  
Change in Focus                :      -0.640081 c*.-mS~Z`  
     17     0.39321881    -0.15081353 'S%H"W\  
Change in Focus                :       0.914906 d$hBgJe>N  
     18     0.20692530    -0.33710703 we8aqEomr  
Change in Focus                :       0.801607 l}SHR|7<  
     19     0.51374068    -0.03029165 |p.|zH  
Change in Focus                :       0.947293 &&g02>gE  
     20     0.38013374    -0.16389860 hjD%=Ri0Z  
Change in Focus                :       0.667010 uH]oHh!}j  
+}R#mco5K  
Number of traceable Monte Carlo files generated: 20 KX J7
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Nominal     0.54403234 \{ve6`7Rn  
Best        0.54384387    Trial     2 Qk72ra)  
Worst       0.18154684    Trial     4 8qL.L(=\/  
Mean        0.35770970 iD*L<9  
Std Dev     0.11156454 VwOcWKD  
h:RP/0E  
R,ZG?/#uM9  
Compensator Statistics: T~L&c  
Change in back focus: niqknqW<t  
Minimum            :        -1.354815 6EeO\Qj{  
Maximum            :         1.611296 Cxeam"-HTt  
Mean               :         0.161872 0X3yfrim  
Standard Deviation :         0.869664 dXfLN<nD>U  
TV=K3F5)M  
90% >       0.20977951               "hi03k  
80% >       0.22748071               z]7/Gc,j  
50% >       0.38667627               [ ou$*  
20% >       0.46553746               -9::M}^2  
10% >       0.50064115                6?'7`p  
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End of Run. Ec2;?pvd%J  
DD2K>1A1  
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 pH3<QN
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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 0` .5gxm  
$,yAOaa  
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                 4eY?#8  
80% >       0.22748071                 X fqhD&g  
50% >       0.38667627                 -sfv"?  
20% >       0.46553746                 A4cOnG,  
10% >       0.50064115 DL?nvH  
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最后这个数值是MTF值呢，还是MTF的公差？ h='F,r5#2  
(v%24bv  
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？？？   BqY_N8l&E  
)+hV+rM jp  
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  : 2T~cOH;T  
90% >       0.20977951                 D(#f`Fj;  
80% >       0.22748071                 GiV%Hcx  
50% >       0.38667627                 -3EQ
RqVg  
20% >       0.46553746                 0=j }`  
10% >       0.50064115 &riGzU]  
....... QPJ\Iu@D$  

/SD}`GxH  
9=%zdz2_S  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm    wA"@t  
Mode                : Sensitivities b(H{i}{]  
Sampling            : 2 cO~<iy  
Nominal Criterion   : 0.54403234 ti\ ${C3  
Test Wavelength     : 0.6328 MtLWpi u@[  
gg'1q3OjM  
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？ m>@hh#kBg  
X'Ss#s>g  
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