Patent ID: 9415126
Filing Date: 2016-08-16
CPC Classification: A61L,C02F,G01N

Claim Text:
1. A chamber comprising: an enclosure configured to trap target radiation therein, wherein the enclosure is at least partially formed by a set of transparent walls having outer and inner surfaces, wherein each transparent wall comprises a first material transparent to the target radiation and having a refractive index greater than 1.1 for the target radiation, wherein a medium located adjacent to the outer surface of the set of transparent walls has a refractive index within approximately one percent of a refractive index of a vacuum for the target radiation, and wherein the outer surface of the set of transparent walls includes a set of cavities, each cavity comprising an approximately prismatic void configured to trap the target radiation within the enclosure by total internal reflection, and wherein the inner surface of at least one transparent wall in the set of transparent walls includes an uneven surface formed by a plurality of side walls, wherein at least one side wall of the plurality of side walls includes a coating of a reflective material and is adjoined by at least two side walls of the plurality of side walls without any coating.