US 6,949,771 B2 | Light source

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US 6,949,771 B2

Light source

Tech Center:

2800 Semiconductors/Memory, Circuits/Measuring and Testing, Optics/Photocopying, Printing/Measuring and Testing

Examiner:

David A. Zarneke

Art Unit:

2891 Semiconductors/Memory

Agent:

DOCUMENT SECURITY SYSTEMS, INC.

Inventors:

Sundar A/L Yoganandan; Seong Choon Lim

Assignee:

DOCUMENT SECURITY SYSTEMS, INC.

Priority:

04/25/01

Filed:

04/23/02

Granted:

09/27/05

Expiration:

09/27/22

Abstract

A light source suitable for surface mounting onto a printed circuit board. The light source includes a planar substrate with a centrally positioned aperture. A light emitting diode is mounted on a metallic layer covering the bottom of the aperture, and is encapsulated by a transparent encapsulant material. The metallic layer provides a thermal path for heat generated by the light emitting diode.

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