在摇滚音乐会、室内灯光显示、电影制片厂及娱乐中心,激光常被用于大型活动与变换图像投影。虽然在这些场合,离子、He-Ne、染料激光全都可以使用,但最常用的还是产生红绿蓝三色的离子激光器。激光娱乐市场目前约为500万美元,未来几年可望持续增长。实际增长领域将在自由放置的全息图像 In rock concerts, indoor lighting displays, movie studios, and entertainment centers, lasers are often used for large-scale events and transform image projections. Although ions, He-Ne, and dye lasers can all be used in these applications, the most commonly used ones are the red, green and blue ion lasers. The laser entertainment market is currently worth about $5 million and is expected to continue to grow in the next few years. Fields of real growth will be free-placed holograms