Patent ID: 6186648
Filing Date: 2001-02-13
Classification: G02B

Abstract:
A system comprising:a source of highly divergent, broadband, incoherent electromagnetic radiation, said source having an extent;an electromagnetic radiation reflector having an axis and a substantially toroidal reflecting surface concave to said source, said toroidal reflecting surface having first and second radii of curvature in first and second orthogonal planes, respectively, with said first radius of curvature being greater than said second radius of curvature, said source being located near a center of curvature of said reflector but laterally offset from the axis of said reflector by a distance, the ratio of the square of said distance to said first radius of curvature being equal to or less than said extent; anda fiber optic target positioned to collect electromagnetic radiation provided by said source and collected by and reflected from said reflector.