Abstract: An optical code reader comprises an integrated optical resonator that is disposed within a housing and that includes a substrate, a cantilever beam, and a bimorph actuator. The cantilever beam is affixed at one end to the substrate, and at least a portion of the cantilever beam has a reflective transmit surface on one side and a photodetector on an opposite side. The bimorph actuator is affixed to the cantilever beam and is responsive to an electrical stimulus to cause the cantilever beam to move in accordance with the stimulus. Movement of the cantilever beam causes the reflective surface to cooperate with a light beam generated by a light source to provide a spot of light that moves on a code pattern, and also causes a field of view of the photodetector to be dynamically altered such that the photodetector tracks movement of the moving spot of light.
Type:
Grant
Filed:
April 6, 1999
Date of Patent:
July 25, 2000
Assignee:
Rockwell Technologies, LLC
Inventors:
Jeffrey A. Moranski, Manouchehr Edward Motamedi, Daniel J. Jinar, Dawn S. Garcia-Nunez, Angus P. Andrews, Sangtae Park