| 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？ 4[e X e$
一下是我的Prescription Data数据： 6&x@.1('z
GENERAL LENS DATA: wHy!CP%
lo+A%\1
Surfaces : 3 .q>iX E_c
Stop : 1 }7Q% 6&IR
System Aperture : Object Space NA = 0.12 e7 o.xR
Glass Catalogs : Schott L,!?Nt\
Ray Aiming : Paraxial Reference, Cache On L8B! u9%
X Pupil shift : 0 0l6.<-f{
Y Pupil shift : 0 l f, 5w
Z Pupil shift : 0 "to;\9lP
Apodization : Gaussian, factor = 1.00000E+000 = ^?/+p8 k
************************************************************* (9a^$C*
Effective Focal Length : 1.639158 (in air at system temperature and pressure) W<g 1<z\f
Effective Focal Length : 1.639158 (in image space) /N{*"s2)
************************************************************* n[rCQdM&U"
Back Focal Length : -1.061568 WyiQoN'q
Total Track : 4.318 upmx $H>
Image Space F/# : 3.417255 AK4t\D )K1
Paraxial Working F/# : 2.950535 z b3t IRH
Working F/# : 2.961912 75lA%|
*X
Image Space NA : 0.1670788 Bzf^ivT3L
Object Space NA : 0.12 [/r(__.
Stop Radius : 0.2398355 {Sh ;(.u^
Paraxial Image Height : 0 Pm7}"D'/
Paraxial Magnification : 0 E1
2uZ$X
Entrance Pupil Diameter : 0.4796709 1% ` Rs
Entrance Pupil Position : 0 {JLtE{
Exit Pupil Diameter : 2.511155 K&-"d/QuLg
Exit Pupil Position : 7.420935 At ;LO9T3z
Field Type : Angle in degrees ;uGv:$ ([g
Maximum Field : 0 / ;$[E
Primary Wave : 1.31 }GM'.yutX
Lens Units : Millimeters z1a7*)8P
Angular Magnification : 0 $??I/6
vY3h3o
Fields : 1 .%-8 t{dt
Field Type: Angle in degrees o8MZiU1Xf
# X-Value Y-Value Weight 53 h0UL
1 0.000000 0.000000 1.000000 * T1_; 4i
uxz^/Gk
Vignetting Factors 8@R|Km5h
# VDX VDY VCX VCY VAN |w=zOC;v
1 0.000000 0.000000 0.000000 0.000000 0.000000 Z\sDUJ
l]SX@zTb
Wavelengths : 1 x{n=;JD
Units: Microns cMIEtK`
# Value Weight Z_NCD`i;
1 1.310000 1.000000 xIn:Z KJ'
5)40/cBe
CARDINAL POINTS: pj(,Zd[47
`]aeI'[}R
Object space positions are measured with respect to surface 1. J}t%p(mb
Image space positions are measured with respect to the image surface. [Rb+q=z#
The index in both the object space and image space is considered. ^.y\ (=
dh\P4
Object Space Image Space ,zc(t<|-y
W = 1.310000 (Primary) |W^IlqTH
************************************************************ I- )4YQI
Focal Length : -1.639015 1.639015 !r-F>!~
************************************************************ >Q*Wi
Focal Planes : 0.313078 -1.159568 ,r} 6iFu
Principal Planes : 1.952094 -2.798584 v@pky0
Anti-Principal Planes : -1.325937 0.479447 ~LC-[ &$
Nodal Planes : 1.952094 -2.798584 y {Q
{'De
Anti-Nodal Planes : -1.325937 0.479447 $cg cX
"N#Y gSr
我用*号，标出了需要注意的地方，请高手指教！
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