光栅数据 是由覆盖空间区域的网格值所定义的非几何数据。

Raster data is non-geometric data defined by a grid of values covering a spatial area.

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每组光栅的对比度、空间频率、显示时间，移动速度和反相频率能单独控制。

Contrast, spatial frequency, presentation time, moving velocity and phase reversal frequency of each grating are controlled independently.

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三色光栅是一种特殊的空间光调制器。

Tricolor grating is a new type of spatial light modulator.

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