Because of brightness and directionality, laser has become into an excellent projectionlight 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。
2
When the color beam from color auxiliary light source adding to the projectionlight 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。
3
The direct projection glare could be reduced through the transmit prism, glass enclosure, and the downward projectionlight beam is uniform and the luminous surface is large.