ZEMAX中priscription data会给出系统的许多有用的数据，其中包括effective focal length的数据和主平面位置的数据。但是我发现直接给出的effective focal length数据和根据其定义结合主平面的数据算出来的结果不一致，这时怎么回事？ |C4o zl=O?
一下是我的Prescription Data数据： j^{b^!4~}
GENERAL LENS DATA: =t HD 4I
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Surfaces : 3 1Df, a#,y"
Stop : 1 IE}Sdeqi)
System Aperture : Object Space NA = 0.12 @x *.5:[
Glass Catalogs : Schott p $XnOh
Ray Aiming : Paraxial Reference, Cache On DEcGFRgN~
X Pupil shift : 0 S,VyUe4P4
Y Pupil shift : 0
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Z Pupil shift : 0 '?b\F~$8
Apodization : Gaussian, factor = 1.00000E+000 N -xnenci
************************************************************* -FaaFw:Z;A
Effective Focal Length : 1.639158 (in air at system temperature and pressure) *cPN\Iu.W
Effective Focal Length : 1.639158 (in image space) .}`V I`z*
************************************************************* }\ EL;sT
Back Focal Length : -1.061568 w7r'SCVh3+
Total Track : 4.318 ,k\/]9
Image Space F/# : 3.417255 Zq^^|[)bA
Paraxial Working F/# : 2.950535 vv!Bo~L1,
Working F/# : 2.961912 A^t"MYX@
Image Space NA : 0.1670788 @??u})^EL
Object Space NA : 0.12 8a?IC|~Pz
Stop Radius : 0.2398355 SbCJ|z#?
Paraxial Image Height : 0 eA1'qww"'
Paraxial Magnification : 0 =^ #0.
Entrance Pupil Diameter : 0.4796709 E~}[+X@
Entrance Pupil Position : 0 y1nP F&_
Exit Pupil Diameter : 2.511155 i"vD RrDe
Exit Pupil Position : 7.420935 y]w )`}Ax
Field Type : Angle in degrees g4i #1V=
Maximum Field : 0 J OPTc]
Primary Wave : 1.31 }&C dsCM>2
Lens Units : Millimeters ML"_CQlE7
Angular Magnification : 0 UYH|?Jw!N
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Fields : 1 *Q0lC1GQ
Field Type: Angle in degrees 9Il'E6
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# X-Value Y-Value Weight ,Io0ZE>`V
1 0.000000 0.000000 1.000000 b #e]1Q
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Vignetting Factors 80 dSQ"y
# VDX VDY VCX VCY VAN { qjUI
1 0.000000 0.000000 0.000000 0.000000 0.000000 =%xIjxYl
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Wavelengths : 1 V, E9Uds
Units: Microns h a N"/C^
# Value Weight I.UjST
1 1.310000 1.000000 EkDws `@
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CARDINAL POINTS: $tEdBnf^ca
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Object space positions are measured with respect to surface 1. u4@, *tT
Image space positions are measured with respect to the image surface. u6]gQP">I
The index in both the object space and image space is considered. N!]PIWnC
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Object Space Image Space /@6E3lh S
W = 1.310000 (Primary) <1TlW
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************************************************************ p!C_:Z5i
Focal Length : -1.639015 1.639015 e og\pMv
************************************************************ Oib[\O7[z
Focal Planes : 0.313078 -1.159568 'W}~)+zK
Principal Planes : 1.952094 -2.798584 pHigxeV2
Anti-Principal Planes : -1.325937 0.479447 w{RNv%hJ$=
Nodal Planes : 1.952094 -2.798584 8m oUK3w
Anti-Nodal Planes : -1.325937 0.479447 Pv^(Q ]
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我用*号，标出了需要注意的地方，请高手指教！
