Title :
A colour 3200fps high-speed CMOS imager for endoscopy in bio-medical applications
Author :
Lustenberger, Felix ; Lehmann, M. ; Cavalier, L. ; Blanc, N. ; Heppner, W. ; Ernst, J. ; Gick, St ; Bloss, H.
Author_Institution :
Photonics Div., CSEM SA, Zurich, Switzerland
Abstract :
A high-speed, high-sensitivity sensor was developed in a standard 0.5 μm CMOS mixed-signal technology for the use in endoscopes. The full frame rate in excess of 3200 frames per second enables the imaging of transient events in biomedical samples. The sensor is organized as a 512×192 pixel array with additional RGB dye filters. Data are transferred from the sensor on either 4 or 8 analogue signal taps. The imager reaches a sensitivity of 130 V/μJ.cm-2 at a wavelength of 470 nm with a dynamic range of 62 dB and 50.2 dB in linear mode and charge-skimming mode, respectively. The FPN, PRNU and temporal noise were measured to be at 0.7%, 1.1% and 0.08% of the full-scale output range of the sensor. This excellent performance is exploited in the analysis of high-speed transient phenomena of human vocal cords.
Keywords :
CMOS image sensors; biomedical optical imaging; endoscopes; mixed analogue-digital integrated circuits; optical filters; transient analysis; 0.5 micron; 192 pixel; 470 nm; 50 MHz; 512 pixel; 98304 pixel; CMOS mixed-signal technology; FPN; PRNU; RGB dye filters; analogue signal taps; biomedical endoscopy; charge-skimming mode; colour CMOS imager; dynamic range; endoscopes; full frame rate; high-speed CMOS imager; high-speed transient event analysis; human vocal cords; imager sensitivity; linear mode; temporal noise; Biomedical imaging; Biosensors; CMOS image sensors; CMOS technology; Dynamic range; Endoscopes; Filters; Sensor arrays; Standards development; Transient analysis;
Conference_Titel :
Solid-State Circuits Conference, 2004. ESSCIRC 2004. Proceeding of the 30th European
Print_ISBN :
0-7803-8480-6
DOI :
10.1109/ESSCIR.2004.1356706
