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:
Mar. 13, 2007
Filed:
Feb. 28, 2002
Jun Ohta, Nara, JP;
Shigeru Nishimura, Chiba, JP;
Kohtaro Idegami, Ishikawa, JP;
Norikatsu Yoshida, Nara, JP;
Keiichiro Kagawa, Nara, JP;
Jun Ohta, Nara, JP;
Shigeru Nishimura, Chiba, JP;
Kohtaro Idegami, Ishikawa, JP;
Norikatsu Yoshida, Nara, JP;
Keiichiro Kagawa, Nara, JP;
Nidek Co., Ltd., Aichi, JP;
Abstract
An object of the invention is to provide an intraocular implant-type vision stimulating unit which is capable of outputting a bipolar pulse signal in a simple constitution, and is highly sensitive, compact, and low power consumptive. In the invention, an intraocular implant-type vision stimulating unit for artificially generating the vision or a portion of the vision includes: a photoelectric conversion circuit for converting incoming light into an electrical signal; a pulse conversion circuit for converting the electrical signal outputted from the photoelectric conversion circuit into an electric pulse signal of a frequency corresponding to a magnitude thereof, and for outputting the same; a waveform shaping circuit for converting the pulse signal outputted from the pulse conversion circuit into a bipolar pulse signal, and for outputting the same; a power supply circuit for supplying electric power to each of the circuits, wherein the bipolar pulse signal is imparted to a retinal region through an electrode.