Patent 7453621 was granted and assigned to Spatial Photonics on November, 2008 by the United States Patent and Trademark Office.
A spatial light modulator includes a substrate; a hinge in connection with the substrate; a mirror plate that is connected with the hinge and is configured to tilt about the hinge; and a piezoelectric device coupled with the substrate. The piezoelectric device is configured to produce an acoustic wave to assist the separation between the mirror plate and the object.