Patent ID: 6705737
Filing Date: 2004-03-16
Classification: G02B

Abstract:
An optical apparatus comprising:a nonplanar light-reflecting surface having a shape referenced relative to an orthogonal axial system having an x-axis, a y-axis, and a z-axis, wherein the light-reflecting surface has a non-circular conic profile with a conic axis and a distance f from a conic vertex to a finite focal point of the conic, wherein the non-circular conic profile is determined in a yz-plane containing the y-axis and the z-axis, and a circular profile with a circular center and a radius of curvature r numerically equal to the distance f from the conic vertex to the finite focal point of the conic, wherein the circular profile is determined in an xz-plane containing the x-axis and the z-axis; and a point light transceiver at a transceiver location, wherein the transceiver location lies on the conic axis in the yz plane, and also at the circular center in the xz plane.