A wide-spectrum 550-1600 nm, 16k VIS + 8 NIR pixels, high-dynamic range image-sensor for biomedical applications

Capteur d'image à large spectre 550-1660nm, 16000 VIS + 8 NIR pixels à grande dynamique pour applications biomédicales.

Laurent Alacoque (1) , David Coriat (2) , Jean-Michel Tualle (3) , Valentin Espinas (4) , Xavier Alacoque (5) , Anabela da Silva (4) , Guillaume Moritz (1) , Sylvain Dumas (6) , Dominique Ettori (3)

1 DOPT - Département d'Optronique
2 LIIM - Laboratoire Intelligence Intégrée Multi-capteurs
3 LPL - Laboratoire de Physique des Lasers
4 DiMABio - DiMABio
5 CRCT - Centre de Recherches en Cancérologie de Toulouse
6 DSYS - Département Systèmes

This paper presents an Application-Specific Integrated Circuit (ASIC) wide-spectrum image sensor and its sensing-module and system. It is made of an integrated visible image sensor, an external NIR-SWIR photodiodes acquisition system and on-chip Analogue to Digital conversion and provides a digital interface to a portable, fully integrated host system based on a raspberry-pi with a dedicated "hat" board. The system is capable of real-time Diffuse Optical Imaging in a wide spectrum with a resolution of 3x16k visible images and 3x8 NIR photodiodes. A signal-to-noise ratio of 66dB in the NIR domain was attained at a total power of 18.4 mW.

Mots clés: biomedical sensor; diffuse optical imaging; diffuse optical spectroscopy; image sensor; NIR; SWIR

Domaines: Micro et nanotechnologies/Microélectronique; Imagerie

Laurent Alacoque, David Coriat, Jean-Michel Tualle, Valentin Espinas, Xavier Alacoque, et al.. A wide-spectrum 550-1600 nm, 16k VIS + 8 NIR pixels, high-dynamic range image-sensor for biomedical applications. ICECS 2023 - 30th IEEE International Conference on Electronics, Circuits and Systems, IEEE, Dec 2023, Istanbul, Turkey. ⟨10.1109/ICECS58634.2023.10382858⟩. ⟨cea-04455302⟩