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. [)n}!5fE
具体的内容请见下面: %;$Y|RbmqE
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Fields: Generally speaking, the field definitions used for optimization and analysis are inadequate for vI}S6-"<
tolerancing. for example, a rotationally symmetric lens may use field definitions of 0, 7, and 10 degrees. For a=VT |CX[
tolerancing purposes, the lack of symmetry in the field definitions may cause inaccurate results when analyzing v"~I( kf$
tilt or decenter tolerances. When constructing a merit function to use for tolerancing ZEMAX can use three W=]" ,<
different field settings: 7g+ ]
Y-Symmetric: ZEMAX computes the maximum field coordinate, then defines new field points at +1.0, +0.7, Ct+%
0.0, -0.7, and -1.0 times the maximum field coordinate, in the Y direction only. All X field values are set to Qe.kN dT+_
zero. This is the default for rotationally symmetric lenses. IQ ~7vk()
XY-Symmetric: Similar to Y-Symmetric, except there are 9 field points used. The 5 Y-Symmetric points are e}AJxBE
used, and -1.0, -0.7, +0.7, and +1.0 are added in the X axis direction only. q.{/{9
User Defined: Use whatever field definitions exist in the current lens file. This option is required when using +Q0-jS#d
vignetting factors, tolerancing multiple configuration lenses, or using tolerance scripts. It is also highly o f
recommended when tolerancing non rotationally symmetric lenses or lenses with complex field weighting $VIq)s2az|
that user defined fields be used.
