| 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？ R]od/u/$
一下是我的Prescription Data数据： wB 8548C}-
GENERAL LENS DATA: L^^f.w#m
(q"S0{
Surfaces : 3 U;&s=M0 [
Stop : 1 ~i-n_ 7 +
System Aperture : Object Space NA = 0.12 rDaiA x&
Glass Catalogs : Schott W*H %\Y:N
Ray Aiming : Paraxial Reference, Cache On 937<: zo:
X Pupil shift : 0 jhG6,;1zMI
Y Pupil shift : 0 ` iuQ .I
Z Pupil shift : 0 d}E6d||A
Apodization : Gaussian, factor = 1.00000E+000 -{3^~vW|<
************************************************************* +S V!QMIg
Effective Focal Length : 1.639158 (in air at system temperature and pressure) a&)$s;
Effective Focal Length : 1.639158 (in image space) CNiJuj`
************************************************************* 2 QHu8mFU
Back Focal Length : -1.061568 Md:*[]<~
Total Track : 4.318 L #vk77
Image Space F/# : 3.417255 OwC{ Ad{
Paraxial Working F/# : 2.950535 ;).QhHeg>
Working F/# : 2.961912 ;XY#Jl>tg
Image Space NA : 0.1670788 {KqW<X6Hp
Object Space NA : 0.12 @)ozgs@e
Stop Radius : 0.2398355 "gpfD-BX
Paraxial Image Height : 0 w4y ???90)
Paraxial Magnification : 0 Z _<Wr7 D
Entrance Pupil Diameter : 0.4796709 H_JT"~_2
Entrance Pupil Position : 0 j~2t^Qz
Exit Pupil Diameter : 2.511155 <D nv=)Rq
Exit Pupil Position : 7.420935 pv|D {39Hs
Field Type : Angle in degrees ZCuh^
Maximum Field : 0 (>D{"}
Primary Wave : 1.31 [:Odb?+ `F
Lens Units : Millimeters nNM)rW
Angular Magnification : 0 w RTzpG4
h" YA>_1
Fields : 1 #|xj*+)H
Field Type: Angle in degrees QZ-6aq\sgp
# X-Value Y-Value Weight am
WIA`n=
1 0.000000 0.000000 1.000000 Wm58[;%LTw
[aC2ktI
Vignetting Factors ">I50#bT
# VDX VDY VCX VCY VAN 4s&koH(x
1 0.000000 0.000000 0.000000 0.000000 0.000000 $/i;UUd
~f2-%~
Wavelengths : 1 8-vNXvl
Units: Microns %}~Ncn_r
# Value Weight A^7Y%
1 1.310000 1.000000 b|h`v
bD cWPwe
CARDINAL POINTS: iGeuO[ ^
z I>,A|yy
Object space positions are measured with respect to surface 1. ^nL_*+V`f
Image space positions are measured with respect to the image surface. v/Ei0}e6~
The index in both the object space and image space is considered. tdRnRoB
dJg72?"ka
Object Space Image Space ZYW=#df R
W = 1.310000 (Primary) |
\JB /x
************************************************************ tTrue?
Focal Length : -1.639015 1.639015 cbA90 8@s
************************************************************ 0jwex
Focal Planes : 0.313078 -1.159568 w0t||qj^>"
Principal Planes : 1.952094 -2.798584 ~|)'vK8W
Anti-Principal Planes : -1.325937 0.479447 +l$BUX
Nodal Planes : 1.952094 -2.798584 |a {*r .
Anti-Nodal Planes : -1.325937 0.479447 A =k{Rl{LA
5SY( :!
我用*号，标出了需要注意的地方，请高手指教！
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