Patent ID: 8049825
Filing Date: 2011-11-01
Classification: G02B,H04N

Abstract:
1. An imaging system, comprising: one or more laser sources configured to produce one or more light beams; a light modulator configured to produce images with the one or more light beams; and a birefringent wedge that is: configured to receive light from the at least one of the one or more laser sources and deliver two angularly separated light beams to the light modulator so as to reduce speckle appearing when the images are displayed on a display surface; one or more optical alignment devices configured to orient the one or more light beams into a combined light beam, wherein the birefringent wedge is disposed between the one or more optical alignment devices and the light modulator; and a second birefringent wedge, wherein the one or more laser sources further comprises a red laser source, wherein the one or more optical alignment devices comprises a first optical alignment device disposed between the green laser source and the light modulator along the optical axis and a second optical alignment device disposed between the red laser source and the light modulator along a second optical axis, wherein the birefringent wedge is disposed between the green laser source and the first optical alignment device, and the second birefringent wedge is disposed between the red laser source and the second optical alignment device.