Back-reflecting LED light source
First Claim
Patent Images
1. A light source comprising:
- a reflector having a front side and a back side;
at least one light-emitting element associated with said reflector and positioned on said front side;
a volume between said reflector and said light-emitting element;
said volume substantially filled by paths of light rays connecting said light-emitting element with said reflector;
a first heat-conducting body positioned at least partially within said volume; and
said heat-conducting body providing a pathway for heat to flow from said light-emitting element toward said back side of said reflector.
5 Assignments
0 Petitions
Accused Products
Abstract
An LED light source using back-reflecting collection optics with a supporting structure and heat sink to block only a small amount of light. A reflector has a front and back side with an LED positioned on the front side of the reflector. A heat conducting body is positioned at least partially between the reflector and the LED. The heat conducting body provides a pathway for heat to flow from the LED toward the back side of the reflector.
83 Citations
21 Claims
-
1. A light source comprising:
-
a reflector having a front side and a back side; at least one light-emitting element associated with said reflector and positioned on said front side; a volume between said reflector and said light-emitting element;
said volume substantially filled by paths of light rays connecting said light-emitting element with said reflector;a first heat-conducting body positioned at least partially within said volume; and said heat-conducting body providing a pathway for heat to flow from said light-emitting element toward said back side of said reflector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A light source comprising:
-
a reflector having a central optical axis; a light-emitting element positioned near said central optical axis; a volume between said reflector and said light-emitting;
said volume substantially filled by paths of light rays connecting said light-emitting element with said reflector;a heat-conducting body comprising a central hub and at least one axial vane positioned at least partially within said volume; and said axial vane positioned predominantly in a plane containing said central optical axis, and said axial vane having a higher thermal conductivity in at least one direction within said plane than in the direction perpendicular to said plane. - View Dependent Claims (16, 17)
-
-
18. A light source comprising:
-
a reflector having a front side, a back side, and a central optical axis; at least one light-emitting element associated with said reflector and positioned on said front side; a first heat-conducting body comprising a central hub positioned near said optical axis and thermally coupled to said light-emitting element; at least one axial vane thermally coupled to said hub; said reflector redirecting the majority of light rays from said light-emitting element to exit said reflector toward said front side with said redirected rays lying in planes substantially parallel to said optical axis; said axial vane being positioned predominantly in one of said planes containing said optical axis; and said axial vane having two opposing flat sides predominantly parallel to said plane, and at least one edge perpendicular to said plane and facing said reflector, said edge being much smaller than either of said flat sides. - View Dependent Claims (19, 20, 21)
-
Specification