Because of brightness and directionality, laser has become into an excellent projection light source.
由于激光的高亮度和极好的方向性，使之成为非常理想的投影光源。
When the color beam from color auxiliary light source adding to the projection light source reaches the need balance, the beam is output in the projection direction.
该方法可以改善投影光源的工作条件，增强光源的光 能的利用率，以较强颜色光亮度为基准达到所需色平衡。
The key parameters of projection display, including resolution, contrast, projection optics, optical throughput, color, light source and screen and their optimum method were described.
描述了投影显示关键参数（分辨率、对比度、投影光学、系统的光通量、彩色化、灯及屏幕）及优化方法。
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