US Patent 7566145 Direct type illuminating device

Patent 7566145 was granted and assigned to Coretronic on July, 2009 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Coretronic

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7566145

Date of Patent

July 28, 2009

Patent Application Number

11823744

Date Filed

June 28, 2007

Patent Primary Examiner

‌

Sharon E. Payne

Patent abstract

A direct type illuminating device includes a light source unit, a reflector plate, a diffuser plate, and a lens module. The light source unit provides source light beams. The reflector plate and the diffuser plate are spaced at an interval from each other, and the light source unit is interposed between the reflector plate and the diffuser plate. The lens module surrounds the light source unit such that the lens module is interposed between the light source unit and the reflector and diffuser plates. An outer curved surface of the lens module has a radius of curvature different from a radius of curvature of an outer curved surface of the light source unit such that the source light beams provided by the light source unit are refracted by the lens module to result in change of traveling directions of the source light beams.