MICRO-LENS ARRAY BASED LIGHT TRANSMITTING SCREEN WITH TUNABLE GAIN

摘要

A transmission screen includes a diffusing element formed from a micro-lens array. The screen generates images of improved quality by varying structural features of lenses (120-173) in the array so that light is directed in different directions and/or with different optical properties compared with other lenses in the array. The structural features which are varied include any of size, shape, curvature, or spacing of the lenses in the array. Results of the variations, include wider viewing angles, improved screen resolution and gain, and reduction of aliasing and other artifacts.