Improvement of a CMOS dual photosensor for laser distance measurement by a floating PN junction

Zivojinovic, P.; Lescure, M.; Tap-Beteille, H.

doi:10.1016/j.sna.2004.03.060

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…Measurement resolution and signal to noise ratio have been improved by integrating an optoelectronic heterodyning system instead of an electrical one. Previously, the design of a 0.6 µm CMOS dual photosensor [24] has to be aborted because of a too low cut-off frequency for laser range-finding applications. Then, a lowvoltage CMOS APD has been designed to allow high-precision and high-SNR in the embedded measurement system.…”

Section: Discussionmentioning

confidence: 99%

Embedded System for Distance Measurement and Surface Discrimination Applications

Tap

Gatet

Moutaye

et al. 2018

2018 Conference on Design of Circuits and Integrated Systems (DCIS)

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The development of robotics and miniaturization has lead to the design of intelligent embedded sensors capable of measuring distance either on wide ranges or with high resolution. Yet, it is impossible to gather both information at the same time performing a single measurement. Furthermore, the enlightened surface type may be detected only under wellknown experimental conditions. Computer processing is also often necessary to analyze the sensors data. In this paper, we report an embedded sensor capable of measuring distances with a resolution of 250 µm in a range of 2.7 m and of discriminating a wide variety of surface types. The embedded system is based on a phase-shift laser rangefinder, whose essential components are a Laser Diode (ML4412N) and its intelligent CMOS laser driver circuit, a CMOS Avalanche PhotoDiode (APD) and its transimpedance circuit and a CMOS Analog Neural Network.

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Section: Discussionmentioning

confidence: 99%

Embedded System for Distance Measurement and Surface Discrimination Applications

Tap

Gatet

Moutaye

et al. 2018

2018 Conference on Design of Circuits and Integrated Systems (DCIS)

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CMOS image sensor for detection of interferon gamma protein interaction as a point-of-care approach

et al. 2011

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Complementary metal oxide semiconductor (CMOS)-based image sensors have received increased attention owing to the possibility of incorporating them into portable diagnostic devices. The present research examined the efficiency and sensitivity of a CMOS image sensor for the detection of antigen-antibody interactions involving interferon gamma protein without the aid of expensive instruments. The highest detection sensitivity of about 1 fg/ml primary antibody was achieved simply by a transmission mechanism. When photons are prevented from hitting the sensor surface, a reduction in digital output occurs in which the number of photons hitting the sensor surface is approximately proportional to the digital number. Nanoscale variation in substrate thickness after protein binding can be detected with high sensitivity by the CMOS image sensor. Therefore, this technique can be easily applied to smartphones or any clinical diagnostic devices for the detection of several biological entities, with high impact on the development of point-of-care applications.

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A CMOS image sensor to recognize the cardiovascular disease markers troponin I and C-reactive protein

et al. 2011

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A complementary metal oxide semiconductor (CMOS) image sensor was utilized to detect the interaction of cardiovascular disease markers, troponin I and C-reactive protein. Each marker with its respective antibodies was adsorbed to an indium nanoparticle (InNP)-coated glass substrate. Dielectric layers of antigens and antibodies bound onto and interacted on conducting InNPs. Normal room light passed through these protein-layer-bound substrates and hit the CMOS image sensor surface, and the number of photons was detected and converted into digital form. We tested this approach for real-time monitoring of cardiac disease markers based on photon count, demonstrating its low cost and its capacity to detect antigens with high sensitivity at picogram per milliliter concentration.

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Improvement of a CMOS dual photosensor for laser distance measurement by a floating PN junction

Cited by 4 publications

References 8 publications

Embedded System for Distance Measurement and Surface Discrimination Applications

Embedded System for Distance Measurement and Surface Discrimination Applications

CMOS image sensor for detection of interferon gamma protein interaction as a point-of-care approach

A CMOS image sensor to recognize the cardiovascular disease markers troponin I and C-reactive protein

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