Abstract: A microstructure to interact with electromagnetic waves by changing optical aspect in selected areas in response to an external signal, the microstructure comprising: a plurality of responsive elements, each responsive element capable of presenting at least two different optical aspects and changing between the optical aspects based on an applied external signal; a support substrate containing the responsive elements; and a plurality of assisting optical lenses each optically enlarging an image from the responsive elements associated with the assisting optical lens.
Type:
Grant
Filed:
March 14, 2001
Date of Patent:
June 6, 2006
Assignee:
3M Innovative Properties Company
Inventors:
David A. Engler, Rolf W. Biernath, John C. Nelson