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. `PC9t)%.pV
具体的内容请见下面: v8)"skVnFG
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Fields: Generally speaking, the field definitions used for optimization and analysis are inadequate for * :O"R
tolerancing. for example, a rotationally symmetric lens may use field definitions of 0, 7, and 10 degrees. For gxN>q4z
tolerancing purposes, the lack of symmetry in the field definitions may cause inaccurate results when analyzing Zge(UhZ
tilt or decenter tolerances. When constructing a merit function to use for tolerancing ZEMAX can use three 9<6q(]U
different field settings: 1Y|a:){G
Y-Symmetric: ZEMAX computes the maximum field coordinate, then defines new field points at +1.0, +0.7, xSm;~')g
0.0, -0.7, and -1.0 times the maximum field coordinate, in the Y direction only. All X field values are set to $iu[-my_
zero. This is the default for rotationally symmetric lenses. GC{M"q|_
XY-Symmetric: Similar to Y-Symmetric, except there are 9 field points used. The 5 Y-Symmetric points are |;vQ"8J
used, and -1.0, -0.7, +0.7, and +1.0 are added in the X axis direction only. gv''A"
User Defined: Use whatever field definitions exist in the current lens file. This option is required when using u. gg N=Z
vignetting factors, tolerancing multiple configuration lenses, or using tolerance scripts. It is also highly xWxc1tT`
recommended when tolerancing non rotationally symmetric lenses or lenses with complex field weighting G3~`]qf
that user defined fields be used.
