| 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？
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一下是我的Prescription Data数据： @oc%4~zl
GENERAL LENS DATA: X>GY*XU
HJ1\FO9\
Surfaces : 3 <&0*5|rR
Stop : 1 '-] BSU
System Aperture : Object Space NA = 0.12 Nx (pJp{S
Glass Catalogs : Schott gL}Y5U+s
Ray Aiming : Paraxial Reference, Cache On 8( /f!~
X Pupil shift : 0 #M^Yh?~%w
Y Pupil shift : 0 ;$ L!`"jn
Z Pupil shift : 0 ;ld~21#m
Apodization : Gaussian, factor = 1.00000E+000 {ZM2WFpE
************************************************************* RGA* 7
Effective Focal Length : 1.639158 (in air at system temperature and pressure) >Wit"p
Effective Focal Length : 1.639158 (in image space) F4<2.V)#-
************************************************************* wYMX1=
Back Focal Length : -1.061568 6`";)T[ G9
Total Track : 4.318 /^eemx
Image Space F/# : 3.417255 dlzamoS@AR
Paraxial Working F/# : 2.950535 ^t
ldm7{_
Working F/# : 2.961912 {5IG3'
Image Space NA : 0.1670788 N5Mz=UgB
Object Space NA : 0.12 UR2)e{RXg
Stop Radius : 0.2398355 k Q(y^t W
Paraxial Image Height : 0 ^r
:A^q
Paraxial Magnification : 0 / lM~K:
Entrance Pupil Diameter : 0.4796709 8 (h
Entrance Pupil Position : 0 3X,{9+(F
Exit Pupil Diameter : 2.511155 j"u)/A8*
Exit Pupil Position : 7.420935 []3}(8yxGb
Field Type : Angle in degrees de47O
Maximum Field : 0 *>$)#? t
Primary Wave : 1.31 A y[L{!)2{
Lens Units : Millimeters ( #iM0{
Angular Magnification : 0 U* :'/.
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Fields : 1 .
\0=1P:
Field Type: Angle in degrees P}QbxkS 8
# X-Value Y-Value Weight X3O$Sd(D
1 0.000000 0.000000 1.000000 10IPq#Jj
pP,bW~rk
Vignetting Factors Z|S 7 " ,
# VDX VDY VCX VCY VAN }V;]c~Q/H
1 0.000000 0.000000 0.000000 0.000000 0.000000 M #&L@fg!
S)|b%mVwR
Wavelengths : 1 nnl9I4-O
Units: Microns -%)
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# Value Weight N`6|Y
1 1.310000 1.000000 z35Rjhj9
| 6^ K
CARDINAL POINTS: r$Qh`[<
jUSr t)o03
Object space positions are measured with respect to surface 1. T@Z{KV"S
Image space positions are measured with respect to the image surface. 6|cl` }g_j
The index in both the object space and image space is considered. x.Ml~W[
Z x%@wH~
Object Space Image Space $i>VI
W = 1.310000 (Primary) J3^Z PW
************************************************************ -JK 4 -Hg
Focal Length : -1.639015 1.639015 Vdk+1AX
************************************************************ A'(F%0NF6
Focal Planes : 0.313078 -1.159568 f.^w/ GJO/
Principal Planes : 1.952094 -2.798584 H5 hUY'O
Anti-Principal Planes : -1.325937 0.479447 %pQ o% <d
Nodal Planes : 1.952094 -2.798584 Hvo27THLo
Anti-Nodal Planes : -1.325937 0.479447 z5vI0 N$
_ u2
我用*号，标出了需要注意的地方，请高手指教！
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