Patent ID: 7526158
Filing Date: 2009-04-28
Classification: G01Q,G03F

Abstract:
1. A system comprising: an optical element; at least one structure at least partially in a non-opaque portion of the optical element and at least adjacent a surface of the optical element, wherein the structure is elongated with opposing narrow ends, one of the opposing narrow ends is adjacent the surface of the optical element and the other opposing narrow end is further from the surface than the one of the opposing narrow ends and is spaced in from other surfaces of the optical element; and a source of light with a mode profile that provides an electric field which has a vector component substantially perpendicular to the surface of the optical element, the source positioned to propagate at least a portion of the light through the optical element on to an object, the structure enhancing the electric field of the light which optically interacts with the object.