MODULATED LIGHT SOURCE SYSTEMS AND METHODS

摘要

A micro-display projection system, including an intensity-modulated plasma lamp, rotating color wheel, micro-display imager, and system control electronics controlling the lamp, wheel and imager. Fast intensity modulation enables: controlling brightness and color tonal balance at the imager; optimizing dynamic range based on screen brightness; and compensating for "green-snow" even when using a standard color wheel. Lamp light intensity is modulated according to the wheel rotation rate and phase, at a rate faster than the wheel rotation rate. Slow intensity modulation enables: optimizing lamp starting; lamp dimming; and compensating for aging components.