Title :
CMOS Imager Technologies for Biomedical Applications
Author :
Burghartz, Joachim N. ; Engelhardt, Thorsten ; Graf, Heinz-Gerd ; Harendt, Christine ; Richter, Harald ; Scherjon, Cor ; Warkentin, Karsten
Author_Institution :
IMS CHIPS, Stuttgart
Abstract :
Presented is the design and characteristics of the first CMOS imager chip that has been implanted into a patient´s eye with demonstration of partially-restored vision. Also presented and discussed are the design and characteristics of the first miniature APS imager chip based on thin-film-on-CMOS (TFC) photodiode technology targeted at low-cost and disposable diagnostic products. Both sensor designs exploit the high-dynamic range CMOS (HDRC*) pixel circuit providing a continuous lin-to-log transformation of the photo current into a voltage sense signal. This allows for implementing a retinal implant with characteristics similar to that of the human eye and to operate a miniature TFC imager for video inspection under strongly varying light conditions.
Keywords :
CMOS image sensors; photodiodes; prosthetics; APS imager chip; CMOS imager chip; retinal implants; thin-film-on-CMOS photodiodes; CMOS image sensors; CMOS technology; Circuits; Implants; Photodiodes; Product design; Retina; Sensor phenomena and characterization; Signal design; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2008. ISSCC 2008. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-2010-0
Electronic_ISBN :
978-1-4244-2011-7
DOI :
10.1109/ISSCC.2008.4523097
