Patent ID: 7905603
Filing Date: 2011-03-15
Classification: G02B

Abstract:
1. An image generator comprising: a plurality of light sources operable to produce a respective plurality of modulated light beams; a beam combiner configured to combine the plurality of modulated light beams into a composite modulated light beam; a beam scanner operable to scan the composite modulated light beam in a two-dimensional pattern; a polarization rotator; and a guiding substrate configured to receive the scanned composite modulated light beam, guide the scanned composite modulated light beam from an input location to an output location, and launch the scanned composite modulated light beam from the output location into a viewing region, wherein the guiding substrate includes a polarization-selective input structure configured to pass the composite modulated light beam and reflect a rotated light beam, wherein the composite modulated light beam is transmitted through the polarization-selective input structure and the polarization rotator to the beam scanner, and wherein the beam scanner is configured to scan the composite modulated light beam through the polarization rotator to the input structure.