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？ !$?@ ;}=
一下是我的Prescription Data数据： ,dp?'_q {
GENERAL LENS DATA: K8 Y/XE K
$O>@ (K
Surfaces : 3 I Q L~I13
Stop : 1 >SJ $41"E
System Aperture : Object Space NA = 0.12 ""+*Gn 7^8
Glass Catalogs : Schott 3az c `[hl
Ray Aiming : Paraxial Reference, Cache On e^GW[lT
X Pupil shift : 0 C{Ug ?hVP
Y Pupil shift : 0 B#MW`7c
Z Pupil shift : 0 d{hYT\7~1(
Apodization : Gaussian, factor = 1.00000E+000 ] aRD6F:L
************************************************************* S=g-&lK
Effective Focal Length : 1.639158 (in air at system temperature and pressure) 5% `Ul
Effective Focal Length : 1.639158 (in image space) J9FNjM[qe
************************************************************* ZX;k*OrW
Back Focal Length : -1.061568 55DzBV
Total Track : 4.318 a X %Zuyny
Image Space F/# : 3.417255 nnNg^<[k3
Paraxial Working F/# : 2.950535 w'0M>2
Working F/# : 2.961912 UT~2}B9fc
Image Space NA : 0.1670788 ; 5k | gW
Object Space NA : 0.12 [J`G`s!
Stop Radius : 0.2398355 #<PdZl R
Paraxial Image Height : 0 XgKG\C=3
Paraxial Magnification : 0 -9I%
Entrance Pupil Diameter : 0.4796709 /vDF< HVzm
Entrance Pupil Position : 0 'lk74qU$
Exit Pupil Diameter : 2.511155 +-\9'Q
Exit Pupil Position : 7.420935 I
6YT|R
Field Type : Angle in degrees C<t>m_t9
Maximum Field : 0 7 !.8#A':
Primary Wave : 1.31 F\ R}no5 C
Lens Units : Millimeters emB D@r
Angular Magnification : 0 - l@W)?$
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Fields : 1 bJF/daC5
Field Type: Angle in degrees l&Ghs@>Kl
# X-Value Y-Value Weight ^6oqq[$
1 0.000000 0.000000 1.000000 &i^NStqu
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6
Vignetting Factors @!/fvP
# VDX VDY VCX VCY VAN 8@KFln )[
1 0.000000 0.000000 0.000000 0.000000 0.000000 pf@ }4PN}
TQd FC\@f"
Wavelengths : 1 K!K"}%/_
Units: Microns ,M& 0<k\
# Value Weight $ cK
B+}
1 1.310000 1.000000 T\!SA
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CARDINAL POINTS: Yb3f]4EH
2 `h! :0
Object space positions are measured with respect to surface 1. /_OZ1jX
Image space positions are measured with respect to the image surface. d.j'0w"
The index in both the object space and image space is considered. So * Wk "
7 eQoc2X2
Object Space Image Space _L'cyH.cn
W = 1.310000 (Primary) :2)1vQ H0L
************************************************************ M|#5 gKXd
Focal Length : -1.639015 1.639015 <GgtP55
************************************************************ 5%+bWI{w
Focal Planes : 0.313078 -1.159568 62l0
Z-
Principal Planes : 1.952094 -2.798584 '#i]SU&*
Anti-Principal Planes : -1.325937 0.479447 I/V )z9
Nodal Planes : 1.952094 -2.798584 XH:gQ 9FD
Anti-Nodal Planes : -1.325937 0.479447 _#D\*0J
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我用*号，标出了需要注意的地方，请高手指教！
