Generating and shaping flat-topped laser beam on inclined screen using light pipe

A high power uniform beam is generated on an inclined plane by one or more diode lasers and two or more light pipes. The light pipe may be trapezoidal such that the illuminated area is generally square. The light pipe may be elliptical such that the illuminated region is substantially circular. 通过一个或多个二极管激光器和两个或更多个光管在倾斜平面上产生高功率均匀光束。光管可以是梯形的，以使得照射区域是大致方形的。光管可以是椭圆形的，以使得照射区域是大致圆形的。