HIGH EFFICIENCY BEAM SHAPING ILLUMINATION OPTICAL DEVICE FOR LIGHT EMITTING DIODE

摘要

A beam shaping LED illumination optical device that is composed of a light pipe (8) and LED lens (14) is provided. Light beams that are emitted from an RGB LED light source (1, 2, 3) pass through a light pipe (8), then color combination and combined focusing occur. The light beams emitted from the light pipe produce a homogenous beam of light without any loss of light through the LED lens (14). This configuration makes it possible to produce an LED projection display system with high efficiency and a supercompact size.