US Patent:
20110115720, May 19, 2011
Inventors:
Jared S. Klein - Shawnee KS, US
Andrew C. Rudebusch - Olathe KS, US
Laura A. Rippel - Olathe KS, US
Assignee:
GARMIN INTERNATIONAL, INC. - Olathe KS
International Classification:
G06F 3/041
G02B 5/09
Abstract:
An optical overlay comprises an inner wall, an outer wall, an upper wall, and a lower wall. The inner wall may be formed to include a planar surface. The outer wall may be spaced apart from the inner wall and may be formed to include a convex surface. The combination of the planar surface of the inner wall and the convex surface of the outer wall may form a plano-convex lens. The upper wall may include a first plurality of ridges that are generally parallel to the inner wall. The lower wall may include a second plurality of ridges that are generally parallel to the inner wall. The combination of the first plurality of ridges and the second plurality of ridges may form an optical filter.
