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. +<Uc42i7n
具体的内容请见下面: [FAoC3 k-h
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Fields: Generally speaking, the field definitions used for optimization and analysis are inadequate for c3`X19'%fM
tolerancing. for example, a rotationally symmetric lens may use field definitions of 0, 7, and 10 degrees. For ?X]7jH<iw;
tolerancing purposes, the lack of symmetry in the field definitions may cause inaccurate results when analyzing i=o<\ {iV:
tilt or decenter tolerances. When constructing a merit function to use for tolerancing ZEMAX can use three (JL{X`gs#
different field settings: fN ?HF'7V
Y-Symmetric: ZEMAX computes the maximum field coordinate, then defines new field points at +1.0, +0.7, j Bl I^
0.0, -0.7, and -1.0 times the maximum field coordinate, in the Y direction only. All X field values are set to 31
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zero. This is the default for rotationally symmetric lenses. Cc]t*;nU_
XY-Symmetric: Similar to Y-Symmetric, except there are 9 field points used. The 5 Y-Symmetric points are {E@ Vh
used, and -1.0, -0.7, +0.7, and +1.0 are added in the X axis direction only. ]{0
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User Defined: Use whatever field definitions exist in the current lens file. This option is required when using J5mMx)t@
vignetting factors, tolerancing multiple configuration lenses, or using tolerance scripts. It is also highly g&\A1H
recommended when tolerancing non rotationally symmetric lenses or lenses with complex field weighting -wW% +w H
that user defined fields be used.
