Patent ID: 9062850
Filing Date: 2015-06-23
Classification: F21V,G01J,G02B

Abstract:
1. A reflecting member comprising: a tube-shaped member, comprising: a reflecting surface structured with the inner peripheral surface formed symmetrically on an axis of the tube-shaped member, wherein a slope, relative to the axis, of a tangent line of the inner peripheral surface in a cross-sectional plane that contains the axis changes monotonically along the axis, and in relation to a target that is positioned facing the smaller opening of the tube-shaped member, positioned at a specific distance of separation therefrom, and having a flat region that is perpendicular to the axis and that is axially symmetrical relative to the axis, of an electromagnetic radiation that is incident along the axis from the larger opening of the tube-shaped member and is reflected by the inner peripheral surface, wherein electromagnetic radiation that is reflected at the first outer edge on the larger opening is incident on one end side of the flat region, wherein electromagnetic radiation that is reflected from the second outer edge on the smaller opening side is incident on the other end side of the flat region, and wherein the electromagnetic radiation is distributed uniformly across the flat region.