US 2019/0101686 A1 · Stack Lighter Luminaire

Abstract

A luminaire module including a plurality of light-emitting elements (LEEs) arranged to emit light in a forward direction; a light guide comprising a pair of opposing side surfaces extending from a receiving end of the light guide to an opposing end of the light guide, the light guide configured to guide light received at the receiving end from the LEEs in the forward direction to the opposing end, wherein the light guide is elongated along a transverse direction orthogonal to the forward direction; and an optical extractor elongated along the transverse direction and located at the opposing end of the light guide to receive the guided light, the optical extractor comprising a redirecting surface and an output surface, wherein the received light undergoes two reflections off the redirecting surface prior to being output through the output surface in an ambient environment as output light in a backward angular range.

Claims25

Dependent claims

A luminaire module comprising:

a plurality of light-emitting elements (LEEs) arranged to emit light in a forward direction;
a light guide comprising a pair of opposing side surfaces extending from a receiving end of the light guide to an opposing end of the light guide, the light guide configured to guide light received at the receiving end from the LEEs in the forward direction to the opposing end, wherein the light guide is elongated along a transverse direction orthogonal to the forward direction;
and
an optical extractor elongated along the transverse direction and located at the opposing end of the light guide to receive the guided light, the optical extractor comprising a redirecting surface and an output surface, wherein the received light undergoes two reflections off the redirecting surface prior to being output through the output surface in an ambient environment as output light in a backward angular range.

1 more element

A light shaping optical article comprising:

a solid optic having a cross-sectional profile comprising:
an input surface;
an output surface opposite the input interface;
a first reflective surface;
and
a second reflective surface extending between the first reflective surface and the output surface, the first reflective surface extending between the second reflective surface and the input surface, wherein
the first reflective surface, the second reflective surface and the output surface are shaped and arranged such that, when the solid optic receives light at the input surface having an input angular range in a plane of the cross-sectional profile, the received light undergoes a first reflection off the first reflective surface, the light reflected off the first reflective surface undergoes a second reflection off the second reflective surface, and the light reflected off the second reflective surface exits the solid optic through the output surface in an output angular range in the plane, where a prevalent propagation direction of output light in the output angular range is tilted in a backward direction relative to a prevalent propagation direction of input light in the input angular range, and
the solid optic has an elongate extension extending from the plane of the cross-sectional profile.

5 more elements

Dependencies are inferred from the claim text.

Stack Lighter Luminaire

Life of this patent

Stack Lighter Luminaire

Life of this patent

Abstract

Claims25