In the paper, the author analyzes and compares the commonly used LCD and DLP in multimedia teaching with LED & LASER hybrid light engine projector, which came into the market only recently, in aspects of their respective light sources, beam splitting systems and display devices. It reveals their differences in image quality and performance, thus providing users with reference in the purchase of projectors.%通过对多媒体教学中常用的LCD和DLP以及新投入市场的LED激光混合光源投影机的光源、分光系统、显示器件分析、对比和研究，得出三种投影机在投影图像显示效果及投影机性能方面的差异，为用户选购投影机提供参考。
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