Back to results
US 2014/0192539 A1Published application
Led-based light source reflector with shell elements
AssigneeXicato, Inc.
InventorsJOHN S. YRIBERRI, CHRISTOPHER R. REED, JIM W. LI, GERARD HARBERS
Life of this patent
Estimating the term…
Abstract
An optical element that may be replaceably mounted to an LED based illumination device. The optical element includes a hollow shell reflector and a plurality of annular shell elements disposed within the hollow shell reflector at different distances from the input port of the optical element. An annular shell element that is closer to the input port of the optical element has a radius that is less than the radius of an annular shell element farther from the input port.
Claims20
An apparatus comprising:
- an LED based illumination device operable to emit light in a Lambertian pattern over a surface of an output window;
- and
- an optical element coupled to receive the light emitted from the output window of the LED based illumination device, the optical element having an input port and an output port, wherein a perimeter of the optical element increases in size from the input port to a maximum perimeter, the optical element comprising:
- a hollow shell reflector having a first height;
- a first annular shell element having a first radius and a second height that is less than the first height, the first annular shell element disposed within the hollow shell reflector;
- and
- a second annular shell element having a second radius and a third height, the second annular shell element disposed within the hollow shell reflector at a location closer to the input port of the optical element than a location of the first annular shell element, wherein the second radius is less than the first radius.
4 more elements
An optical element, comprising:
- an input port configured to receive light emitted from a planar light emitting area of an LED based illumination device;
- an output port configured to emit an amount of light;
- a hollow shell reflector having a first height;
- a first annular shell element having a first radius and a second height that is less than the first height, the first annular shell element disposed within the hollow shell reflector;
- and
- a second annular shell element having a second radius and a third height that is less than the first height, the second annular shell element disposed within the hollow shell reflector at a location closer to the input port of the optical element than a location of the first annular shell element, wherein the second radius is less than the first radius.
3 more elements
An optical element, comprising:
- an input port configured to receive light emitted from a planar light emitting area of an LED based illumination device;
- an output port configured to emit an amount of light;
- a hollow shell reflector having a first height;
- a first annular shell element having a first diameter and a second height that is less than the first height;
- a curved, annular shell element having a second diameter that is less than the first diameter, and a third height that is greater than the second height and less than the first height;
- a second annular shell element having a third diameter that is less than the second diameter and a fourth height that is less than the third height, wherein the curved, annular shell element and the first annular shell element and the second annular shell elements are disposed within the hollow shell reflector.
3 more elements
Dependencies are inferred from the claim text.