Patent ID: 9448158
Filing Date: 2016-09-20
CPC Classification: G01N,G02B

Claim Text:
1. A light collector, comprising: a slab light guide having an elliptical cross section defined by a first planar elliptical surface and a second planar elliptical surface opposite the first planar elliptical surface, wherein a first axis between a first focus and a second focus of a first planar elliptical surface and a second axis between a first focus and a second focus of the second planar elliptical surface are situated in the first planar elliptical surface and the second planar elliptical surface, respectively, the slab light guide situated to direct light via multiple reflections and defining a relief volume situated between the first focus of the first planar elliptical surface and the first focus of the second planar elliptical surface and configured to receive a specimen, the relief volume of the slab light guide bounded by at least one transmissive optical surface that directs received emission from the specimen in the relief volume into the slab light guide, the slab light guide further including a perimeter surface that couples the first planar elliptical surface and the second planar elliptical surface and configured to reflect the received emission propagating within the slab light guide to an output coupling region situated between a second focus of the first planar elliptical surface and a second focus of the second planar elliptical surface.