Indirect luminaire
First Claim
1. A luminaire comprising:
- at least one optical chamber delimited by a light exit window and a 5 curved reflective surface extending from the light exit window to a mounting surface extending from the curved reflective surface towards the light exit window, each optical chamber comprising;
a light source mounted on the mounting surface; and
a light guide extending across part of the optical chamber, comprising;
a total internal reflection major surface facing the light exit window;
a further major surface facing the curved reflective surface, said further major surface comprising a light outcoupling portion comprising a plurality of light outcoupling structures;
a first edge surface optically coupled to the light source; and
a further edge surface opposite the first edge surface arranged to direct light towards the curved reflective surface;
wherein;
the optical chamber has a width (W) defined from a light emission surface of the light source to an end point of the curved reflective surface proximal to the light exit window;
the light guide has a length (L) between the first edge surface and the further edge surface;
a ratio between the width (W) and the length (L) is in a range of 2;
15;
1; and
the light guide is spatially away from the curved reflective surface at a substantial distance (H1) along direction of the mounting surface, wherein the substantial distance (H1) is equal to or larger than thickness of the light guide.
2 Assignments
0 Petitions
Accused Products
Abstract
A luminaire (1) is disclosed comprising at least one optical chamber (10) delimited by a light exit window (11) and a curved reflective surface (15) extending from the light exit window to a mounting surface (17) extending from the curved reflective surface towards the light exit window. Each optical chamber comprises a light source (20) mounted on the mounting surface; and a light guide (30) extending across part of the optical chamber. The light guide comprises a total internal reflection major surface (40) facing the light exit window; a further major surface (50) facing the curved reflective surface, said further major surface comprising a light outcoupling portion (51) comprising a plurality of light outcoupling structures (53); a first edge surface (60) optically coupled to the light source; and a further edge surface (70) opposite the first edge surface arranged to direct light towards the curved reflective surface.
21 Citations
15 Claims
-
1. A luminaire comprising:
-
at least one optical chamber delimited by a light exit window and a 5 curved reflective surface extending from the light exit window to a mounting surface extending from the curved reflective surface towards the light exit window, each optical chamber comprising; a light source mounted on the mounting surface; and
a light guide extending across part of the optical chamber, comprising;
a total internal reflection major surface facing the light exit window;
a further major surface facing the curved reflective surface, said further major surface comprising a light outcoupling portion comprising a plurality of light outcoupling structures;
a first edge surface optically coupled to the light source; anda further edge surface opposite the first edge surface arranged to direct light towards the curved reflective surface;
wherein;the optical chamber has a width (W) defined from a light emission surface of the light source to an end point of the curved reflective surface proximal to the light exit window;
the light guide has a length (L) between the first edge surface and the further edge surface;
a ratio between the width (W) and the length (L) is in a range of 2;
15;
1; and
the light guide is spatially away from the curved reflective surface at a substantial distance (H1) along direction of the mounting surface, wherein the substantial distance (H1) is equal to or larger than thickness of the light guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification