对比分析了用视频显微镜、普通生物显微镜、显微投影仪测试异形截面纤维特征参数的方法和特点。
Three methods and their measurement of characteristic parameters of profiled fiber with video microscopy, microscopy and projection are compared and analyzed.
将该偏振方向旋转器用作LCD或LCOS投影仪中的偏振转换器，将大大提高系统的光能利用率以及投影系统的对比度。
This kind of rotator can be used in LCD or LCOS, greatly improving the light efficiency of the system and the contrast of projection.
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