ZEMAX中priscription data會給出系統(tǒng)的許多有用的數(shù)據(jù),其中包括effective focal length的數(shù)據(jù)和主平面位置的數(shù)據(jù)。但是我發(fā)現(xiàn)直接給出的effective focal length數(shù)據(jù)和根據(jù)其定義結(jié)合主平面的數(shù)據(jù)算出來的結(jié)果不一致,這時怎么回事?
!F:mDZeY 一下是我的Prescription Data數(shù)據(jù):
$dxA7 `L GENERAL LENS DATA:
(q0vql Rt5,/Q0 Surfaces : 3
`g_r<EY8/ Stop : 1
.l hS System Aperture : Object Space NA = 0.12
y^e3Gyk Glass Catalogs : Schott
it-]-=mqb Ray Aiming : Paraxial Reference, Cache On
V.9p4k` X Pupil shift : 0
]WzeJ"r {3 Y Pupil shift : 0
-dWg1`; Z Pupil shift : 0
Qqi?DW1)- Apodization : Gaussian, factor = 1.00000E+000
2cO6'?b *************************************************************
#K`0b$ Effective Focal Length : 1.639158 (in air at system temperature and pressure)
NiFe#SLA Effective Focal Length : 1.639158 (in image space)
+J85Re ` *************************************************************
=k*XGbU Back Focal Length : -1.061568
=W;e9 6# Total Track : 4.318
H|0-Al.{ Image Space F/# : 3.417255
'7pzw>E=: Paraxial Working F/# : 2.950535
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