| qlmi |
2006-08-10 13:34 |
关于Effective focal length的问题
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？ 0wA?.~ L
一下是我的Prescription Data数据： CZ~%qPwD w
GENERAL LENS DATA: <* vWcCS1
\nKpJ9!
Surfaces : 3 PdkS3Hz
Stop : 1 #\{j/{VZ
System Aperture : Object Space NA = 0.12 ^T.ic S xP
Glass Catalogs : Schott x c& &UKd
Ray Aiming : Paraxial Reference, Cache On _P:}]5-|
X Pupil shift : 0 j@98UZ{g\
Y Pupil shift : 0 G(*7hs
Z Pupil shift : 0 `\]gNn'Q
Apodization : Gaussian, factor = 1.00000E+000 #K4lnC2qz
************************************************************* T 8.
to
Effective Focal Length : 1.639158 (in air at system temperature and pressure) k/`WfSM\.
Effective Focal Length : 1.639158 (in image space) ,5
A&
************************************************************* W3HTQGV
Back Focal Length : -1.061568 R|,F C'
Total Track : 4.318 Z'V"nhL
Image Space F/# : 3.417255 ,5 yl rE
Paraxial Working F/# : 2.950535 kvoEnwBe_
Working F/# : 2.961912 q '
Image Space NA : 0.1670788 tw*n+{]hi
Object Space NA : 0.12 1k:s~m?!
Stop Radius : 0.2398355 t#eTn";
Paraxial Image Height : 0 WNa#X]*E)
Paraxial Magnification : 0 H+O^e l
Entrance Pupil Diameter : 0.4796709 8K;wX%_,
Entrance Pupil Position : 0 G^6\ OOSy
Exit Pupil Diameter : 2.511155 vrr` ^UB2
Exit Pupil Position : 7.420935 @&4s)&-F
Field Type : Angle in degrees ;/- X;!a>
Maximum Field : 0 8va&*J?
2
Primary Wave : 1.31 _ITA $ #
Lens Units : Millimeters ' a6:3*
Angular Magnification : 0 'C" ) X
LL}b]B[
Fields : 1 q@6Je(H
Field Type: Angle in degrees 4hLv"R.
# X-Value Y-Value Weight 4or8fG
1 0.000000 0.000000 1.000000 k@RIM ( ^t
M?FbBJ`sF
Vignetting Factors Q*c |!<
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# VDX VDY VCX VCY VAN bpv?$j-j
1 0.000000 0.000000 0.000000 0.000000 0.000000 :{tj5P!S
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Wavelengths : 1 $At,D.mGkb
Units: Microns B;6N.X(K
# Value Weight (+=TKI<=
1 1.310000 1.000000 6 z2_b wo
(4 6 S^*
CARDINAL POINTS: zm9_[0
xy.di9
Object space positions are measured with respect to surface 1. t&^cYPRfY'
Image space positions are measured with respect to the image surface. I8]q~Q<-P
The index in both the object space and image space is considered. 7K\H_YY8#
j1hx{P'
Object Space Image Space `tjH#W`
W = 1.310000 (Primary) Ts~ )0
************************************************************ VJ'bS9/T
Focal Length : -1.639015 1.639015 UB7H`)C}
************************************************************ Pp9nilb_(
Focal Planes : 0.313078 -1.159568 (qky&}H
Principal Planes : 1.952094 -2.798584 7lJs{$
P
Anti-Principal Planes : -1.325937 0.479447 fmv8)$W#U
Nodal Planes : 1.952094 -2.798584 GA.4'W^&a
Anti-Nodal Planes : -1.325937 0.479447 OlJkyL8|
-1P*4H 2a
我用*号，标出了需要注意的地方，请高手指教！
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