06582103 is referenced by 254 patents and cites 5 patents.

An illumination apparatus provides an output with high spatial uniformity of luminance. The illumination apparatus includes a cavity that has reflective surfaces and an output area. At least one light source is disposed in the cavity, with the light source including a point source (such as an LED) and an optical diverter having a flared (e.g., cuspated) reflecting surface. Light from the point source is distributed by the optical diverter towards the reflective surfaces within the cavity. Before exiting the device, light passes through an optical conditioning element that is positioned over the output area of the cavity. The optical conditioning element includes at least a diffuser, such as a translucent film or plastic sheet, and preferably also includes one or more prism sheets such as a brightness-enhancing film.

Title
Lighting apparatus
Application Number
9/620051
Publication Number
6582103 (B1)
Application Date
July 20, 2000
Publication Date
June 24, 2003
Inventor
Eric D Pelka
Los Angeles
CA, US
Michael J Popovich
Del Mar
CA, US
William A Parkyn
Lomita
CA, US
David G Pelka
Los Angeles
CA, US
John Popovich
Del Mar
CA, US
Agent
Kirkpatrick & Lockhart
US
Assignee
Teledyne Lighting and Display Products
CA, US
IPC
F21V 7/00
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