由刀口响应曲线提取若干点作为评价指标,这已被一些部门采用。本文根据光学纤维面板低频率满足空间不变性,由调制传递函数提取一个评价指标。根据对实测二十块面板的刀口响应及传递函数数据回归统计的结果,取特征频率为10mm~(-1)。另外,由刀口响应的平直部分提取另一个背景串光指标。综合以上两指标来评价面板像质,其意义更为确切与完整,评价方法也得到了简化。 Several points are extracted from the blade response curve as an evaluation indicator, which has been adopted by some departments. In this paper, an evaluation index is extracted from the modulation transfer function according to the low frequency of optical fiber panel to meet the space invariance. According to the regression results of the blade response and transfer function data of twenty panels, the characteristic frequency is 10mm ~ (-1). In addition, another background string index is extracted by the straight portion of the blade response. The above two indicators to evaluate panel quality, its meaning is more accurate and complete, evaluation methods have also been simplified.