| 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？ ]h3{M Tr/
一下是我的Prescription Data数据： v35!?
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GENERAL LENS DATA: ^ "D
Ca]V%g(
Surfaces : 3 NzBX2
Stop : 1 xZE% Gf_U
System Aperture : Object Space NA = 0.12 =|j~ *6Hd
Glass Catalogs : Schott =6YffXa_s
Ray Aiming : Paraxial Reference, Cache On 506AvD
X Pupil shift : 0 w]ihG h
Y Pupil shift : 0 g&]n:qx
Z Pupil shift : 0 } LA7 ku
Apodization : Gaussian, factor = 1.00000E+000 sUe<21:
************************************************************* RCC~#bb
Effective Focal Length : 1.639158 (in air at system temperature and pressure) !
<O,x I'
Effective Focal Length : 1.639158 (in image space) m[w 8|[
************************************************************* c}u`L6!I3
Back Focal Length : -1.061568 =@\Li)Y
Total Track : 4.318 hLo'q^mGr
Image Space F/# : 3.417255 ,6Ua+\|
Paraxial Working F/# : 2.950535 vyhxS .[9
Working F/# : 2.961912 1RU+d.&D
Image Space NA : 0.1670788 8GKqPS+
Object Space NA : 0.12 .dw;b~p
Stop Radius : 0.2398355 sry`EkS
Paraxial Image Height : 0 hsJS(qEh.'
Paraxial Magnification : 0 b!l/O2
G
Entrance Pupil Diameter : 0.4796709 \ L5h&
Entrance Pupil Position : 0 2;`F` }BA
Exit Pupil Diameter : 2.511155 %YLyh?J
Exit Pupil Position : 7.420935 @ C" w
1}
Field Type : Angle in degrees kf -/rC)>
Maximum Field : 0 q% pjY
Primary Wave : 1.31 ;=i$0w9 W
Lens Units : Millimeters @\)a&p]a
Angular Magnification : 0 6>e YG <y{
IzWS6!zKU
Fields : 1 p}K\rpvJpu
Field Type: Angle in degrees 69C>oX
# X-Value Y-Value Weight @7z_f!'u
1 0.000000 0.000000 1.000000 EG
oe<.
#- z(] Y,y
Vignetting Factors $g @-WNe
# VDX VDY VCX VCY VAN ^BN?iXQhN
1 0.000000 0.000000 0.000000 0.000000 0.000000 tLc~]G*\`s
r4wnfy
Wavelengths : 1 wPRs.(]_
Units: Microns \?K>~{)
# Value Weight _
ATIV
1 1.310000 1.000000 `7o(CcF6H
$@}\T
CARDINAL POINTS: s e^(1R k
\*x=q20
Object space positions are measured with respect to surface 1. 6JZ$; x{j
Image space positions are measured with respect to the image surface. {z0PB] U
The index in both the object space and image space is considered. W :X N!
h"849c;C.
Object Space Image Space +f]\>{o4
W = 1.310000 (Primary) FK!UUy;
************************************************************ 0ofl,mXW
Focal Length : -1.639015 1.639015 2Hj;o
************************************************************ o ImW
Focal Planes : 0.313078 -1.159568 u4,b%h.
Principal Planes : 1.952094 -2.798584 vo3[)BDbT
Anti-Principal Planes : -1.325937 0.479447 }RPeA cbU_
Nodal Planes : 1.952094 -2.798584 B9Z=`c.T
Anti-Nodal Planes : -1.325937 0.479447 uom~, k$|
TU,k(
`tn<
我用*号，标出了需要注意的地方，请高手指教！
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