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. 1aQm r=,
具体的内容请见下面: 8T1zL.u>q
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Fields: Generally speaking, the field definitions used for optimization and analysis are inadequate for bn )1G$0|
tolerancing. for example, a rotationally symmetric lens may use field definitions of 0, 7, and 10 degrees. For G &xt L
tolerancing purposes, the lack of symmetry in the field definitions may cause inaccurate results when analyzing $m;`O_-T
tilt or decenter tolerances. When constructing a merit function to use for tolerancing ZEMAX can use three Xf_#O'z
different field settings: t5%cpkgh4
Y-Symmetric: ZEMAX computes the maximum field coordinate, then defines new field points at +1.0, +0.7, +l^tT&s;f
0.0, -0.7, and -1.0 times the maximum field coordinate, in the Y direction only. All X field values are set to 9v_s_ QkL2
zero. This is the default for rotationally symmetric lenses. f[1cN `|z
XY-Symmetric: Similar to Y-Symmetric, except there are 9 field points used. The 5 Y-Symmetric points are ? V,q&=9
used, and -1.0, -0.7, +0.7, and +1.0 are added in the X axis direction only. E{EO9EI
User Defined: Use whatever field definitions exist in the current lens file. This option is required when using ~4khIz
vignetting factors, tolerancing multiple configuration lenses, or using tolerance scripts. It is also highly XjF@kQeM=
recommended when tolerancing non rotationally symmetric lenses or lenses with complex field weighting *#'j0;2F
that user defined fields be used.
