Publications related to 2PFC™ Image Sensors: Better Image Quality at Lower Cost

Direct time-of-flight SPAD image sensors for light detection and ranging

Depth sensing is an increasingly important feature in many applications of consumer, automotive, augmented/virtual reality (AR-VR), space and bio-medical imaging. Long range, high depth resolution, high spatial resolution, and high frame rates are often co ...

EPFL2021

Low-power image sensor system with single-photon avalanche diode photodetectors

Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic

The invention relates to an image sensor comprising a photodetector array including neighboring photodetector elements, each photodetector element comprising: - a photodetector cell having a photodiode and a reset unit; - a cell control unit coupled with t ...

2021

High sensitivity single-photon avalanche diode array

Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic

The present invention relates to a photodetector array for capturing image data, comprising: - photodetector cells arranged on a substrate, each including a single-photon avalanche diode, wherein the active areas of the photodetector cells are neighbored a ...

2021

A CMOS Image Sensor Pixel Combining Deep Sub-Electron Noise With Wide Dynamic Range

Christian Enz, Assim Boukhayma, Antonino Caizzone

This letter introduces a 5-transistors (5T) implementation of CMOS Image Sensors (CIS) pixels enabling the combination of deep sub-electronnoise performance with wide dynamic range (DR). The 5T pixel presents a new technique to reduce the sense node capaci ...

2020

Light microscope with reconfigurable sensor array

Edoardo Charbon, Claudio Bruschini, Ivan Michel Antolovic

A light microscope comprises a light source (10) for illuminating a specimen (35), a sensor array (60) comprised of photon-counting detector elements (61, 62) for measuring detection light (15) coming from the specimen (35), and a control device (70) for c ...

2020

Pixel sensor cell for cmos image sensors with enhanced conversion gain at high dynamic range capability

Assim Boukhayma

The present invention relates to a pixel sensor cell (1) for a CMOS sensor device comprising: - a photodiode (11) for generating photoelectrons; - a first transfer transistor (12) coupling the photodiode (11) with an intermediate node (IN) and configured t ...

2019

Compact Modeling of Charge Transfer in Pinned Photodiodes for CMOS Image Sensors

Christian Enz, Farzan Jazaeri, Assim Boukhayma, Raffaele Capoccia

In this paper, we propose a physics-based compact model of the pinned photodiode (PPD) combined with the transfer gate. A set of analytical expressions is derived for the 2-D electrostatic profile, the PPD capacitance, and the charge transfer current. The ...

2019

A Modular, Direct Time-of-Flight Depth Sensor in 45/65-nm 3-D-Stacked CMOS Technology

Edoardo Charbon, Myung Jae Lee, Preethi Padmanabhan, Augusto Ronchini Ximenes

This article introduces a modular, direct time-of-flight (TOF) depth sensor. Each module is digitally synthesized and features a 2

\times

(8

\times

8) single-photon avalanche diode (SPAD) pixel array, an edge-sensitive decision tree, a shared time-to ...

2019

AC/DC Ratio Enhancement in Photoplethysmography Using a Pinned Photodiode

Christian Enz, Assim Boukhayma, Antonino Caizzone

Photoplethysmography (PPG) enables non-invasive vitals monitoring. Nevertheless, it is intrinsically limited by the extremely small AC/DC ratio, also called perfusion-index (PI). This increases the dynamic-range requirements to reliably process the PPG wav ...

2019

Time-resolved Single-photon Detector Arrays for High Resolution Near-infrared Optical Tomography

Scott Anthony Lindner

Oxygenation is an important marker in many clinical settings, e.g. diagnosing ischaemic brain injuries in preterm infants or determining treatment effectiveness in cancer patients. Despite significant efforts to determine the oxygenation state of the human ...

EPFL2018

2PFC™ Image Sensors: Better Image Quality at Lower Cost

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Direct time-of-flight SPAD image sensors for light detection and ranging

Low-power image sensor system with single-photon avalanche diode photodetectors

High sensitivity single-photon avalanche diode array

A CMOS Image Sensor Pixel Combining Deep Sub-Electron Noise With Wide Dynamic Range

Light microscope with reconfigurable sensor array

Pixel sensor cell for cmos image sensors with enhanced conversion gain at high dynamic range capability

Compact Modeling of Charge Transfer in Pinned Photodiodes for CMOS Image Sensors

A Modular, Direct Time-of-Flight Depth Sensor in 45/65-nm 3-D-Stacked CMOS Technology

AC/DC Ratio Enhancement in Photoplethysmography Using a Pinned Photodiode

Time-resolved Single-photon Detector Arrays for High Resolution Near-infrared Optical Tomography

Time-resolved Single-photon Detector Arrays for High Resolution Near-infrared Optical Tomography

A Modular, Direct Time-of-Flight Depth Sensor in 45/65-nm 3-D-Stacked CMOS Technology

Compact Modeling of Charge Transfer in Pinned Photodiodes for CMOS Image Sensors

Pixel sensor cell for cmos image sensors with enhanced conversion gain at high dynamic range capability

Light microscope with reconfigurable sensor array

A CMOS Image Sensor Pixel Combining Deep Sub-Electron Noise With Wide Dynamic Range

High sensitivity single-photon avalanche diode array

Low-power image sensor system with single-photon avalanche diode photodetectors

Direct time-of-flight SPAD image sensors for light detection and ranging

AC/DC Ratio Enhancement in Photoplethysmography Using a Pinned Photodiode