The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 2004
Filed:
Jun. 13, 2002
Chin Chang, Yorktown Heights, NY (US);
Gert W. Bruning, Sleepy Hollow, NY (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An autonomous solid state lighting system has a charge mode which collects energy and produces electric power with a solid state energy source, converts the voltage of the electric power using a bi-directional power converter, and stores the power in an energy storage device. A discharge mode draws electric power from the energy storage device, converts the voltage of the electric power using the bi-directional power converter, and produces light from a solid state light source. A controller controls the charge and discharge modes. In one embodiment, the solid state energy source can be a solar cell panel, the solid state light source can be an LED module, and the energy storage device can be a battery pack.