Light-emitting device with remote scattering element and total internal reflection extractor element
First Claim
Patent Images
1. A light-emitting device comprising:
- a light-emitting element (LEE);
a scattering element spaced apart from the LEE, configured to scatter received light and arranged to receive light from the LEE;
an extractor arranged to form an optical interface with the scattering element through which the extractor receives light, the extractor including a side surface and an exit surface, the extractor being configured to emit light through the exit surface to an ambient environment, whereinthe side surface is shaped such that an angle of incidence of light received directly from the optical interface is reflected via total internal reflection, andthe exit surface is non-planar and comprises multiple differently shaped portions; and
a reflective surface arranged between the optical interface and the side surface of the extractor, the reflective surface being arranged and configured to reflect light from the optical interface back into the extractor.
1 Assignment
0 Petitions
Accused Products
Abstract
A variety of light-emitting devices are disclosed that are configured to output light provided by a light-emitting element (LEE). In general, embodiments of the light-emitting devices feature a light-emitting element, a scattering element that is spaced apart from the light-emitting element and an extractor element coupled to the scattering element, where the extractor element includes, at least in part, a total internal reflection surface. Luminaires incorporating light-emitting devices of this type are also disclosed.
123 Citations
29 Claims
-
1. A light-emitting device comprising:
-
a light-emitting element (LEE); a scattering element spaced apart from the LEE, configured to scatter received light and arranged to receive light from the LEE; an extractor arranged to form an optical interface with the scattering element through which the extractor receives light, the extractor including a side surface and an exit surface, the extractor being configured to emit light through the exit surface to an ambient environment, wherein the side surface is shaped such that an angle of incidence of light received directly from the optical interface is reflected via total internal reflection, and the exit surface is non-planar and comprises multiple differently shaped portions; and a reflective surface arranged between the optical interface and the side surface of the extractor, the reflective surface being arranged and configured to reflect light from the optical interface back into the extractor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A light-emitting device comprising:
-
a light-emitting element (LEE); a scattering element spaced apart from the LEE, configured to scatter received light and arranged to receive light from the LEE, the scattering element comprising phosphor, wherein the phosphor comprises inelastic scattering centers and elastic scattering centers, the inelastic scattering centers are configured to inelastically scatter at least some of the light received from the LEE, and the elastic scattering centers are configured to elastically scatter at least some of the light received from the LEE; an extractor arranged to form an optical interface with the scattering element through which the extractor receives light, the extractor including a side surface and an exit surface, the extractor being configured to emit light through the exit surface to an ambient environment, wherein the side surface is shaped such that an angle of incidence of light received directly from the optical interface is reflected via total internal reflection; and a reflective surface arranged between the optical interface and the side surface of the extractor, the reflective surface being arranged and configured to reflect light from the optical interface back into the extractor. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
Specification