| 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？ /lS z8h2
一下是我的Prescription Data数据： q"5iza__H
GENERAL LENS DATA: K+D`U6&
5Cd>p<
Surfaces : 3 ?9_<LE
q
Stop : 1 9cAb\5c|
System Aperture : Object Space NA = 0.12 x-k}RI
Glass Catalogs : Schott BF 2,E<^A
Ray Aiming : Paraxial Reference, Cache On KAm v7
X Pupil shift : 0 ^0 R.U+?+
Y Pupil shift : 0 k+2~=#
Z Pupil shift : 0 f0 f N1
Apodization : Gaussian, factor = 1.00000E+000 <jT6|2'
************************************************************* R74kt36M
Effective Focal Length : 1.639158 (in air at system temperature and pressure) @kUCc1LT
Effective Focal Length : 1.639158 (in image space) S*6P=O*
************************************************************* _|xO4{X
Back Focal Length : -1.061568 [rv"tz=
Total Track : 4.318 kC"<4U
Image Space F/# : 3.417255 eOjoxnD-$
Paraxial Working F/# : 2.950535 etj8M
y6=
Working F/# : 2.961912 !Ac <A.
Image Space NA : 0.1670788 >&tPI rz
Object Space NA : 0.12 7=t4;8|j;
Stop Radius : 0.2398355 ]:JoGGE a0
Paraxial Image Height : 0 p q7G[
Paraxial Magnification : 0 BEyg 63=
Entrance Pupil Diameter : 0.4796709 ^!-*xH.dK
Entrance Pupil Position : 0 *D1 ^Se
Exit Pupil Diameter : 2.511155 Jz
s.)
Exit Pupil Position : 7.420935 z R(}X8fP
Field Type : Angle in degrees 9D:p~_"g
Maximum Field : 0 m
UpLD+-j
Primary Wave : 1.31 q-gN0"z^6$
Lens Units : Millimeters " 4#V$V
Angular Magnification : 0 <<gk< _7`
W F<`CQ g[
Fields : 1 Rz1&(_Ps
Field Type: Angle in degrees wQ qI@
# X-Value Y-Value Weight W[[3'J TF
1 0.000000 0.000000 1.000000 sPn[FuT>+s
'5.n2 8W>
Vignetting Factors G=!1P]M {
# VDX VDY VCX VCY VAN 6+(g4MW
1 0.000000 0.000000 0.000000 0.000000 0.000000 6wx;grt'Z
*z;4.
OX
Wavelengths : 1 9l9 nT
Units: Microns Vm 6G5QwM
# Value Weight Tw"u{%t
1 1.310000 1.000000 HDZB)'I
Y;d$x}dh
CARDINAL POINTS: =4uL1[0'
BpZE
Object space positions are measured with respect to surface 1. :zZK%} G<
Image space positions are measured with respect to the image surface. ~~k_A|&
The index in both the object space and image space is considered. 6Y0k}+j|>E
6U6,Wu
Object Space Image Space $^?"/;8P5
W = 1.310000 (Primary) Aa-L<wZVPt
************************************************************ 5mUHk]W
Focal Length : -1.639015 1.639015 ik)T>rY g0
************************************************************ MW8GM }Ho[
Focal Planes : 0.313078 -1.159568 7{=/rbZT?
Principal Planes : 1.952094 -2.798584 &{NN!X
Anti-Principal Planes : -1.325937 0.479447 \\ XvVi:B
Nodal Planes : 1.952094 -2.798584 Yo3my>N&g
Anti-Nodal Planes : -1.325937 0.479447 P: vAU8d>
M eo(|U
我用*号，标出了需要注意的地方，请高手指教！
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