07618157 is referenced by 127 patents and cites 21 patents.

A lamp includes a linearly extending heat sink, blue-light-emitting LEDs mounted on the heat sink, and a light emitting cover mounted on the heat sink in line with the LEDs, a first portion of the cover opposite the LEDs including a phosphor that is excited by the LEDs to emit white light. The cover may be a tube with the LEDs outside the tube, a portion of the tube nearest the LEDs being transparent and receiving light from the LEDs. The tube may include reflectors that are attached to an exterior surface of the tube to hold the tube on the heat sink. Alternatively, the cover may enclose the LEDs on the heat sink, where a portion of the cover has an interior surface that reflects light from the LEDs to the first portion. The lamp may include electrical connections that allow for multiple lamps to be connected in series.

Title
Tubular blue LED lamp with remote phosphor
Application Number
12/145895
Publication Number
7618157 (B1)
Application Date
June 25, 2008
Publication Date
November 17, 2009
Inventor
William A George
Lynn
MA, US
Richard Speer
Concord
MA, US
Maria Anc
Groveland
MA, US
Miguel Galvez
Danvers
MA, US
Agent
Robert F Clark
Assignee
Osram Sylvania
MA, US
IPC
F21V 29/00
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