[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 J6[}o4Z  
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然后添加了默认公差分析，基本没变 }]H7uC!t  
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然后运行分析的结果如下： J90:c@O"w  

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Analysis of Tolerances  71@kIJI  
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File : E:\光学设计资料\zemax练习\f500.ZMX *=O]^|]2  
Title: z{&Av  
Date : TUE JUN 21 2011 a_bZT4  
V,=5}qozQ  
Units are Millimeters.  pdm(7^  
All changes are computed using linear differences. gxmo 1  
unc6 V%  
Paraxial Focus compensation only. tvf5b8(Y-  
w&f>VB~,1  
WARNING: Solves should be removed prior to tolerancing.  ZB|s/  
ZV:df 6S  
Mnemonics: Op8Gj `  
TFRN: Tolerance on curvature in fringes. za}Kd^KeB  
TTHI: Tolerance on thickness. ZnJJ-zP  
TSDX: Tolerance on surface decentering in x. -<k)|]8  
TSDY: Tolerance on surface decentering in y. k~so+k&=b  
TSTX: Tolerance on surface tilt in x (degrees). 4CchE15  
TSTY: Tolerance on surface tilt in y (degrees). Iila|,cM  
TIRR: Tolerance on irregularity (fringes). 2q]ZI  
TIND: Tolerance on Nd index of refraction. 50dN~(;p  
TEDX: Tolerance on element decentering in x. Q|P M6ta  
TEDY: Tolerance on element decentering in y. `q\F C[W  
TETX: Tolerance on element tilt in x (degrees). ob8}v*s  
TETY: Tolerance on element tilt in y (degrees). WY QVe_<z:  
lz6CK  
WARNING: RAY AIMING IS OFF. Very loose tolerances may not be computed accurately. ViyG%Sm  
H;NAS/OhS  
WARNING: Boundary constraints on compensators will be ignored. "9dZ z/{  
;hODzfNkS  
Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm y`8U0TE3R  
Mode                : Sensitivities *z6A ~U  
Sampling            : 2 0FE_><e  
Nominal Criterion   : 0.54403234 QHja4/
 
Test Wavelength     : 0.6328 L~e0^X
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j:uq85s  
)7!,_r  
Fields: XY Symmetric Angle in degrees [kpQ:'P3
 
#      X-Field      Y-Field       Weight    VDX    VDY    VCX    VCY *~4<CP+"0  
1   0.000E+000   0.000E+000   1.000E+000  0.000  0.000  0.000  0.000 M:(.aEe  
/eU\B^k  
Sensitivity Analysis: {>vgtkJ  
?7TmAll<.s  
                 |----------------- Minimum ----------------| |----------------- Maximum ----------------| -O,:~a=*_  
Type                      Value      Criterion        Change          Value      Criterion        Change w0@XJH:P
 
Fringe tolerance on surface 1 Xjxa 2D  
TFRN   1            -1.00000000     0.54257256    -0.00145977     1.00000000     0.54548607     0.00145374 $<XQv$YS  
Change in Focus                :      -0.000000                            0.000000 Y@k=m )zE  
Fringe tolerance on surface 2 Z ztp %2c  
TFRN   2            -1.00000000     0.54177471    -0.00225762     1.00000000     0.54627463     0.00224230 0}`.Z03fy  
Change in Focus                :       0.000000                            0.000000 Mv/ SU">F  
Fringe tolerance on surface 3 o<p4r}*AVJ  
TFRN   3            -1.00000000     0.54779866     0.00376632     1.00000000     0.54022572    -0.00380662 1c@
S[y  
Change in Focus                :      -0.000000                            0.000000 RTvOaZ  
Thickness tolerance on surface 1 bC"h7$3  
TTHI   1   3        -0.20000000     0.54321462    -0.00081772     0.20000000     0.54484759     0.00081525 ]b>XN8y.  
Change in Focus                :       0.000000                            0.000000 ~|, "w90  
Thickness tolerance on surface 2 v!DK.PZbi  
TTHI   2   3        -0.20000000     0.54478712     0.00075478     0.20000000     0.54327558    -0.00075675 =bP<cC=3b  
Change in Focus                :       0.000000                           -0.000000 rNicg]:\x  
Decenter X tolerance on surfaces 1 through 3 **z^aH?B2  
TEDX   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 %-$ :/N  
Change in Focus                :       0.000000                            0.000000 ^8bc<c:P  
Decenter Y tolerance on surfaces 1 through 3 ]8OmYU%6V  
TEDY   1   3        -0.20000000     0.54401464   -1.7700E-005     0.20000000     0.54401464   -1.7700E-005 As5
l36  
Change in Focus                :       0.000000                            0.000000 kI04<!  
Tilt X tolerance on surfaces 1 through 3 (degrees) k >.U!  
TETX   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 +A1*e+/b\  
Change in Focus                :       0.000000                            0.000000 N"RPCd_  
Tilt Y tolerance on surfaces 1 through 3 (degrees) _*g
.U=u  
TETY   1   3        -0.20000000     0.54897548     0.00494314     0.20000000     0.54897548     0.00494314 3TeRZ=2:*x  
Change in Focus                :       0.000000                            0.000000 7LM&3mA<  
Decenter X tolerance on surface 1 ;5
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TSDX   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 of7p~{3H  
Change in Focus                :       0.000000                            0.000000 uVhz
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Decenter Y tolerance on surface 1 |"KdW#.x  
TSDY   1            -0.20000000     0.53999563    -0.00403671     0.20000000     0.53999563    -0.00403671 YMNLn9  
Change in Focus                :       0.000000                            0.000000 FIAmAZH}_  
Tilt X tolerance on surface (degrees) 1 7rbw_m`12-  
TSTX   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 .waj.9&[l  
Change in Focus                :       0.000000                            0.000000 })kx#_o]'d  
Tilt Y tolerance on surface (degrees) 1 7BqP3T=&_  
TSTY   1            -0.20000000     0.42678383    -0.11724851     0.20000000     0.42678383    -0.11724851 =zrfh-lwH  
Change in Focus                :       0.000000                            0.000000 ;.xKVH/@  
Decenter X tolerance on surface 2 C2zKt/)A  
TSDX   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 M&q~e@P  
Change in Focus                :       0.000000                            0.000000 xL<c/B`-:  
Decenter Y tolerance on surface 2 F\&^(EL  
TSDY   2            -0.20000000     0.51705427    -0.02697807     0.20000000     0.51705427    -0.02697807 [e_csQ  
Change in Focus                :       0.000000                            0.000000 ]Lg~I#/#  
Tilt X tolerance on surface (degrees) 2 EBk-qd a}  
TSTX   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 <C;TGA  
Change in Focus                :       0.000000                            0.000000 HE_
UHv  
Tilt Y tolerance on surface (degrees) 2 [euR<i*I#  
TSTY   2            -0.20000000     0.35349910    -0.19053324     0.20000000     0.35349910    -0.19053324 Y=_*Ai  
Change in Focus                :       0.000000                            0.000000 'qde#[VB  
Decenter X tolerance on surface 3 2!CL8hG5:  
TSDX   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 %|:j=/_  
Change in Focus                :       0.000000                            0.000000 9C Ki$L  
Decenter Y tolerance on surface 3 wL]#]DiE  
TSDY   3            -0.20000000     0.53419039    -0.00984195     0.20000000     0.53419039    -0.00984195 ~Al3Dv9x  
Change in Focus                :       0.000000                            0.000000 5A5t
 
Tilt X tolerance on surface (degrees) 3 8yDsl  
TSTX   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 cBOK@\x:Wi  
Change in Focus                :       0.000000                            0.000000 c=?6`m,"M  
Tilt Y tolerance on surface (degrees) 3 yt,Ky8y1  
TSTY   3            -0.20000000     0.42861670    -0.11541563     0.20000000     0.42861670    -0.11541563 ./.aLTh  
Change in Focus                :       0.000000                            0.000000 5{iNR4sq  
Irregularity of surface 1 in fringes eTw9c }[  
TIRR   1            -0.20000000     0.50973587    -0.03429647     0.20000000     0.57333868     0.02930634 ]B~(yh  
Change in Focus                :       0.000000                            0.000000 -bSM]86  
Irregularity of surface 2 in fringes y0?HZ Xq  
TIRR   2            -0.20000000     0.53400904    -0.01002330     0.20000000     0.55360281     0.00957047  5 b,|6  
Change in Focus                :       0.000000                            0.000000 car|&b
 
Irregularity of surface 3 in fringes pXBh^  
TIRR   3            -0.20000000     0.58078982     0.03675748     0.20000000     0.49904394    -0.04498840 0Krh35R_)F  
Change in Focus                :       0.000000                            0.000000 zLg$|@E&  
Index tolerance on surface 1 *<[\|L:#]Z  
TIND   1            -0.00100000     0.52606778    -0.01796456     0.00100000     0.56121811     0.01718578 =WZ9|
e  
Change in Focus                :       0.000000                            0.000000 Ku uiU= (L  
Index tolerance on surface 2 ea`6J  
TIND   2            -0.00100000     0.55639086     0.01235852     0.00100000     0.53126361    -0.01276872 7)2Q  
Change in Focus                :       0.000000                           -0.000000 *>Bew  
XN?my@_HpM  
Worst offenders: :9x]5;ma  
Type                      Value      Criterion        Change |f1^&97=+  
TSTY   2            -0.20000000     0.35349910    -0.19053324 n;vZY  
TSTY   2             0.20000000     0.35349910    -0.19053324 VQ2'a/s  
TSTX   2            -0.20000000     0.35349910    -0.19053324 1P'L<z  
TSTX   2             0.20000000     0.35349910    -0.19053324 S5Pn6'w  
TSTY   1            -0.20000000     0.42678383    -0.11724851 7zU~X,  
TSTY   1             0.20000000     0.42678383    -0.11724851 _/.VXW  
TSTX   1            -0.20000000     0.42678383    -0.11724851 hBaG*J{  
TSTX   1             0.20000000     0.42678383    -0.11724851 hPGDN\#LD  
TSTY   3            -0.20000000     0.42861670    -0.11541563 %gSmOW2.c^  
TSTY   3             0.20000000     0.42861670    -0.11541563 ,+C?UW  
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Estimated Performance Changes based upon Root-Sum-Square method: *u,xBC2C  
Nominal MTF                 :     0.54403234 :=!6w  
Estimated change            :    -0.36299231 $83Qd  
Estimated MTF               :     0.18104003 u}_
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28+{  
Compensator Statistics: MU `!sb*  
Change in back focus: "A~D(1K  
Minimum            :        -0.000000 2VX9FDrnk  
Maximum            :         0.000000 x{So  
Mean               :        -0.000000 \'('HFr,  
Standard Deviation :         0.000000 t@+e#3P!  
4@mJEi{  
Monte Carlo Analysis: r9b(d]  
Number of trials: 20 @<4U &  
H<g8u{ $  
Initial Statistics: Normal Distribution 4R8Qn^  
**AkpV)  
  Trial       Criterion        Change s9+lC!!  
      1     0.42804416    -0.11598818 J_|%8N{[x  
Change in Focus                :      -0.400171 e8xNZG;  
      2     0.54384387    -0.00018847 I.~=\%Z{  
Change in Focus                :       1.018470 A5 4u}  
      3     0.44510003    -0.09893230 4W E)2vkS  
Change in Focus                :      -0.601922 ]+w 27!  
      4     0.18154684    -0.36248550 a?Y>hvI  
Change in Focus                :       0.920681 MAX?,-x  
      5     0.28665820    -0.25737414
meThjC
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Change in Focus                :       1.253875 ~%
`hh9]  
      6     0.21263372    -0.33139862 e~,+rM  
Change in Focus                :      -0.903878 B !
rb*"[  
      7     0.40051424    -0.14351809 V}Q`dEk2r  
Change in Focus                :      -1.354815 Z$('MQ|Ur  
      8     0.48754161    -0.05649072 C+t
|fSJ  
Change in Focus                :       0.215922 d:cOdm>,  
      9     0.40357468    -0.14045766 YT)1_>*\  
Change in Focus                :       0.281783 5*90t{#  
     10     0.26315315    -0.28087919 B_8JwMJu3  
Change in Focus                :      -1.048393 el<[Ng[  
     11     0.26120585    -0.28282649 5s4x%L (~}  
Change in Focus                :       1.017611 MA%g-}  
     12     0.24033815    -0.30369419 AxO.adQE%  
Change in Focus                :      -0.109292 2sEG#/Y=  
     13     0.37164046    -0.17239188 !g|[A7<|  
Change in Focus                :      -0.692430 BPOT!-  
     14     0.48597489    -0.05805744 Y$|KY/)H)  
Change in Focus                :      -0.662040 |GPYbxzc  
     15     0.21462327    -0.32940907 ~Xr[d07bC  
Change in Focus                :       1.611296 p-!/p#  
     16     0.43378226    -0.11025008 ?a?4;Y!  
Change in Focus                :      -0.640081 o62GEl25  
     17     0.39321881    -0.15081353 cmd7-2  
Change in Focus                :       0.914906 FS!vnl8`  
     18     0.20692530    -0.33710703 &&"+\^3  
Change in Focus                :       0.801607 $0~1;@`rQ6  
     19     0.51374068    -0.03029165 N>sHT =_  
Change in Focus                :       0.947293 \t&8J+%  
     20     0.38013374    -0.16389860 *rV{(%\m  
Change in Focus                :       0.667010 D&],.N  
!SLfAFcS  
Number of traceable Monte Carlo files generated: 20 cb. -AlqQ  
=4!m]*y  
Nominal     0.54403234 Vy=+G~  
Best        0.54384387    Trial     2 Qdc)S>gp  
Worst       0.18154684    Trial     4 9"M-nH*<  
Mean        0.35770970  2q9$5   
Std Dev     0.11156454 NKVLd_f k  
c2Y\bKeN  
ybIqn0&[  
Compensator Statistics: VjeF3pmBa  
Change in back focus: =#{q#COK$  
Minimum            :        -1.354815 rTST_$"_6  
Maximum            :         1.611296 K
z]\o"K
 
Mean               :         0.161872 q+?q[:nR-  
Standard Deviation :         0.869664 YCdtf7P=q  
Tg=P*HY6  
90% >       0.20977951               Wk }}f|O0  
80% >       0.22748071               @j(2tJ,w  
50% >       0.38667627               br?pfs$U  
20% >       0.46553746               lXVh`+X/l  
10% >       0.50064115                }Cb-7/  
yRp&pUtb  
End of Run. TeJ=QpGW2  
 -f<}lhmQ  
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 p@@*F+  
}/L#<n`Z  
? a/\5`gnN  
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 |h.@Xy  
dI%Nwl%  
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                 bUuQ"!>ppu  
80% >       0.22748071                 :8A@4vMS)?  
50% >       0.38667627                 ?YF2Uc8z%2  
20% >       0.46553746                 2~yj =D27Z  
10% >       0.50064115 DjvPeX  
^SIA%S
3  
最后这个数值是MTF值呢，还是MTF的公差？ sH%Ts@Pl  
wVF qkJ  
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？？？   FA%V>&;`  
_9<Mo;C  
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  : :NB.ib@*  
90% >       0.20977951                 R83PHM  
80% >       0.22748071                 \ rKUPI\  
50% >       0.38667627                 hBhbcWD,ka  
20% >       0.46553746                 t. DnF[  
10% >       0.50064115 +{#Z^y6&  
....... !>/J]/4>  

ja(ZJ[<`  
j]aIJbi  
这些数值都是MTF值

Criterion           : Geometric MTF average S&T at 30.0000 cycles per mm   D[4%CQ1m  
Mode                : Sensitivities I.`DBI#-f  
Sampling            : 2 !(3[z>  
Nominal Criterion   : 0.54403234  '{cF
r  
Test Wavelength     : 0.6328 $4og{  
GH&5m44  
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？ )Lk2tvr  
dF|R`Pa2ML  
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