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. w3qf7{b
具体的内容请见下面: d7J[ .^\
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Fields: Generally speaking, the field definitions used for optimization and analysis are inadequate for 7;'.5,-3c
tolerancing. for example, a rotationally symmetric lens may use field definitions of 0, 7, and 10 degrees. For lE)rRG+JLW
tolerancing purposes, the lack of symmetry in the field definitions may cause inaccurate results when analyzing Y@H,Lk
tilt or decenter tolerances. When constructing a merit function to use for tolerancing ZEMAX can use three x7Rq|NQ
different field settings: +){a[@S@x
Y-Symmetric: ZEMAX computes the maximum field coordinate, then defines new field points at +1.0, +0.7, gAA
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0.0, -0.7, and -1.0 times the maximum field coordinate, in the Y direction only. All X field values are set to ; axa ZV
zero. This is the default for rotationally symmetric lenses. P9"D[ uz
XY-Symmetric: Similar to Y-Symmetric, except there are 9 field points used. The 5 Y-Symmetric points are l 5';?>!s
used, and -1.0, -0.7, +0.7, and +1.0 are added in the X axis direction only. 3>9 dJx4I
User Defined: Use whatever field definitions exist in the current lens file. This option is required when using a^c ,=X3
vignetting factors, tolerancing multiple configuration lenses, or using tolerance scripts. It is also highly o+-Ge
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recommended when tolerancing non rotationally symmetric lenses or lenses with complex field weighting UD<^r]'x
that user defined fields be used.
