Patent ID: 6709124
Filing Date: 2004-03-23
Classification: G02F,G03B,H04N

Abstract:
Apparatus for producing scrolling bands of colored light on an active area of a panel of a projection device comprising:(a) an assembly which receives light from a light source and is adapted to be rotated about an axis, said assembly comprising a plurality of transmissive color filters which extend along the axis and define an internal volume, a periphery, and two opposing ends; (b) a reflecting surface located at least partially within the internal volume for receiving light which has passed through the periphery and reflecting said light out of one of said ends, said reflecting surface being adapted to remain stationary as the assembly rotates about the axis; and (c) an optical relay which receives light reflected out of said one of said ends and transmits said light to the active area of the panel; wherein rotation of the assembly about the axis produces a progressive, row-by-row, changing of color on the active area of the panel.