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？ %B| Ca&
一下是我的Prescription Data数据：
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GENERAL LENS DATA: 5L\Im^
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Surfaces : 3 I3Ad+]v
Stop : 1 tpP68)<ns
System Aperture : Object Space NA = 0.12 G52z5-=v
Glass Catalogs : Schott h6D1uM"o
Ray Aiming : Paraxial Reference, Cache On \u 6/nvZ]N
X Pupil shift : 0 /)r[}C0
Y Pupil shift : 0 {65_k
Z Pupil shift : 0 a3:1`c/~\
Apodization : Gaussian, factor = 1.00000E+000 V j[,o
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************************************************************* A .<M*[{q
Effective Focal Length : 1.639158 (in air at system temperature and pressure) 5"Y:^_8
Effective Focal Length : 1.639158 (in image space) 0'R}'
************************************************************* K!gocNOf
Back Focal Length : -1.061568 &=lh Kt
Total Track : 4.318 ,6wGd aMR
Image Space F/# : 3.417255 OL623jQX
Paraxial Working F/# : 2.950535 .y #>mXm>
Working F/# : 2.961912 IZxr;\dq6
Image Space NA : 0.1670788 UR[UZ4G
Object Space NA : 0.12 f5.Be%
Stop Radius : 0.2398355 j8ac8J,}c
Paraxial Image Height : 0 w5a;t s_x
Paraxial Magnification : 0 ~Ecx >f4nX
Entrance Pupil Diameter : 0.4796709 2c5)pIVEy
Entrance Pupil Position : 0 :) T#.(mR
Exit Pupil Diameter : 2.511155 EL9JM}%0v
Exit Pupil Position : 7.420935 "T6s;' k
Field Type : Angle in degrees # LG<o3An
Maximum Field : 0 {CGk9g" `
Primary Wave : 1.31 9 NqZ& S
Lens Units : Millimeters SdJk no
Angular Magnification : 0 L>,x G.oG
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Fields : 1 jft@ 'W53
Field Type: Angle in degrees m>'#664q1
# X-Value Y-Value Weight !]# ;'
1 0.000000 0.000000 1.000000 ?O/!pUAu
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Vignetting Factors |TuFx=~5v
# VDX VDY VCX VCY VAN {uiL91j .
1 0.000000 0.000000 0.000000 0.000000 0.000000 ;vgaFc]
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Wavelengths : 1 n si&r
Units: Microns rF
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# Value Weight YHo*IX')C?
1 1.310000 1.000000 +InFv" wt
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CARDINAL POINTS: \xOv 9(
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Object space positions are measured with respect to surface 1. < #7j~ <
Image space positions are measured with respect to the image surface. ~@ K!>j
The index in both the object space and image space is considered. N`5
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Object Space Image Space h=ko _/<
W = 1.310000 (Primary) 9 H~OC8R:
************************************************************ `qj24ehc
Focal Length : -1.639015 1.639015 fMRMQR=6B
************************************************************ mvGj
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Focal Planes : 0.313078 -1.159568 /Q VhT
Principal Planes : 1.952094 -2.798584 & y:SK)
Anti-Principal Planes : -1.325937 0.479447 -&r A<j
Nodal Planes : 1.952094 -2.798584 RMBPm*H
Anti-Nodal Planes : -1.325937 0.479447 76EMS?e
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我用*号，标出了需要注意的地方，请高手指教！
