Patent ID: 9304287
Filing Date: 2016-04-05
CPC Classification: G02B

Claim Text:
1. A light concentrating apparatus, comprising: a light collecting element configured to receive incident light and redirect the incident light as redirected light; a non-imaging optical assembly comprising a plurality of shaped reflectors and configured to receive the redirected light and serially modify directional and spatial distributions of the redirected light through a relay of reflections to form an output beam; wherein the light concentrating apparatus is further configured such that a spatial distribution of the redirected light associated with a first dimension is modified differently than a spatial distribution associated with a second dimension; and wherein at least two of the plurality of shaped reflectors comprises surfaces that are defined substantially according to the formula: wherein coefficients A, B, C, D, E and F are different for each of the at least two shaped reflectors, where x represents a position measured substantially horizontally perpendicular to the building façade, z represents a position measured in a vertical direction, and coefficients A, B, C, D, E, and F are obtained by a deterministic numerical optimization technique to maximize a transmission of visible light into at least one of a predetermined spatial aperture and a predetermined angular range.