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:
Oct. 12, 2004
Filed:
Nov. 07, 2001
Wilfried Nisch, Tübingen, DE;
Alfred Stett, Teutlingen, DE;
Markus Schubert, Tübingen, DE;
Michael Graf, Leonberg, DE;
Heinz Gerhard Graf, Magstadt, DE;
Hugo Hammerle, Tübingen, DE;
Eberhart Zrenner, Tübingen, DE;
Martin Stelzle, Reutlingen, DE;
Eberhard-Karls-Universitat Tubingen Universitatsklinikum, Tubingen, DE;
Abstract
A retina implant, comprises a surface and a plurality of pixel elements disposed on the surface for receiving and converting incoming light energy into electric energy. At least one amplifier is provided in the implant, and a plurality of stimulation electrodes supplied via the at least one amplifier as a function of signals received by the pixel elements. At least one light-sensitive reference element is coupled with the at least one amplifier for controlling amplification thereof as a function of light energy impinging on the at least one reference element.