Patent Number: 6,332,693

Title: Apparatus and method for intensifying illumination brightness bytime-superposing multiple pulsed light sources

Abstract: An illumination apparatus including: at least two light sources, in whicheach of the light sources produce independent light beams; a controllerfor sequentially driving each of the light sources at a high power abovetheir respective maximum rated power, to produce a respective light beamfor each light source, and for leaving the remaining light sources at alow power below their respective maximum rated power, such that thetime-average of the high and low power levels are set to a predeterminedvalue for each of the light sources; and a combiner and director forsequentially combining each of the light beams from their respective lightsources while being driven at high power into a common output beam with afixed direction. Various combiner and directors are disclosed includingtiltable mirrors under the control of the controller as well as opticalsystems.

Inventors: Dove; Derek Brian (Mt. Kisco, NY), Rosenbluth; Alan Edward (Yorktown Heights, NY), Yang; Kei-Hsiung (Katonah, NY)


International Classification: G02B 27/14 (20060101); F21V 023/04 ()

Expiration Date: 12/25/2014