US 2003/0227774 A1 · Axial LED source

Abstract

A lamp has LED sources that are placed about a lamp axis in an axial arrangement. The lamp includes a post with post facets where the LED sources are mounted. The lamp includes a segmented reflector for guiding light from the LED sources. The segmented reflector includes reflective segments each of which is illuminated primarily by light from one of the post facets (e.g., one of the LED sources on the post facet). The LED sources may be made up of one or more LED dies. The LED dies may include optic-on-chip lenses to direct the light from each post facet to a corresponding reflective segment. The LED dies may be of different sizes and colors chosen to generate a particular far-field pattern.

Claims46

Dependent claims

A lamp, comprising:

a post aligned along a lamp axis, the post comprising a post facet;
and
a monolithic LED die mounted on the post facet, wherein the monolithic LED die includes an array of LEDs and normal vectors to light emitting surfaces of the LEDs are approximately perpendicular to the lamp axis.

Dependencies are inferred from the claim text.

Facts

Application

10/166,853Filed 10 Jun 2002

Published

11 Dec 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

F21V 29/51
Cooling arrangements: using condensation or evaporation of a fluid, e.g. heat pipes
F21K 9/68
Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction: details of reflectors…
F21S 41/148
The main emission direction of the LED being angled to the optical axis of the illuminating device: the main emission direction of the LED being…
F21S 41/151
Light emitting diodes [LED]: arranged in one or more lines

Axial LED source

Life of this patent

Axial LED source

Life of this patent

Abstract

Claims46