Light source for liquid crystal display panels utilizing internally reflecting light pipes and integrating sphere

摘要

This invention relates to a collimated light source for a flat panel liquid crystal display which uses a high intensity light source positioned in an integrating sphere. One or more tapered light pipes have their narrow end(s) positioned in an opening in the integrating sphere. Light from the integrating sphere is internally reflected in the light pipes(s) to produce a relatively collimated output beam which is projected onto one surface of the liquid crystal panel display.P PThis invention relates to a light source for a liquid crystal panel display and, more particularly, to a collimated light source utilizing light pipes and an integrating light sphere.