还有一点忘了说了, 就是公差计算时的视场设定? 是Y对称? XY对称? 用户自定义? 我的解释只是针对用户自定义时的结果. "A9 c]
具体的内容请见下面: 1Y Mu\(
RpY#_\^hI
Fields: Generally speaking, the field definitions used for optimization and analysis are inadequate for Yt;.Z$i ,
tolerancing. for example, a rotationally symmetric lens may use field definitions of 0, 7, and 10 degrees. For -n~VMLd?@
tolerancing purposes, the lack of symmetry in the field definitions may cause inaccurate results when analyzing Z? -l -s K
tilt or decenter tolerances. When constructing a merit function to use for tolerancing ZEMAX can use three 7e&%R4{b
different field settings: Zx]"2U#
Y-Symmetric: ZEMAX computes the maximum field coordinate, then defines new field points at +1.0, +0.7, K<+h/Ok
0.0, -0.7, and -1.0 times the maximum field coordinate, in the Y direction only. All X field values are set to 3^zO G2
zero. This is the default for rotationally symmetric lenses. >j$CM:w
XY-Symmetric: Similar to Y-Symmetric, except there are 9 field points used. The 5 Y-Symmetric points are JEes'H}Y
used, and -1.0, -0.7, +0.7, and +1.0 are added in the X axis direction only. nEm+cHHo?
User Defined: Use whatever field definitions exist in the current lens file. This option is required when using RA+k/2]y!
vignetting factors, tolerancing multiple configuration lenses, or using tolerance scripts. It is also highly |bz,cvlP
W
recommended when tolerancing non rotationally symmetric lenses or lenses with complex field weighting WChJ
<[]W
that user defined fields be used.
