Patent ID: 8167433
Filing Date: 2012-05-01
Classification: G02B,G03B,H04N

Abstract:
1. A light engine for use in a projector, comprising: a prism for receiving and separating white light into blue, green, and red light; a plurality of channel subassemblies having imaging devices for receiving, modulating and reflecting said red, green and blue light back to said prism, which in response re-converges said light for projection onto a screen to produce an image; at least two of said channel subassemblies being provided with motorized convergence mechanisms for adjusting the orientation of respective ones of said imaging devices for convergence correction of the image projected on said screen, wherein each of said channel subassemblies includes a plurality of fixed elements, at least one movable element housing a respective one of said imaging devices, and a plurality of motors mounted to said fixed elements for driving said at least one movable element, wherein said at least one movable element is a floating plate and said fixed elements include a mounting plate mounted to the prism and supporting each respective one of said motors and a fixed stage frame mounted to said mounting plate and circumscribing said floating plate, wherein said motors include a pair of vertical adjustment motors for vertical and rotational adjustment of said floating plate, and a horizontal adjustment motor for horizontal adjustment of said floating plate, and wherein said floating plate includes a plurality of leaf springs that contact inner surfaces of said fixed stage frame for minimizing backlash.