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Focus-Induced Photoresponse: a novel way to measure distances with photodetectors

We present the Focus-Induced Photoresponse (FIP) technique, a novel approach to optical distance measurement. It takes advantage of a universally-observed phenomenon in photodetector devices, an irradiance-dependent responsivity. This means that the output from a sensor is not only dependent on the...

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Autores principales: Pekkola, Oili, Lungenschmied, Christoph, Fejes, Peter, Handreck, Anke, Hermes, Wilfried, Irle, Stephan, Lennartz, Christian, Schildknecht, Christian, Schillen, Peter, Schindler, Patrick, Send, Robert, Valouch, Sebastian, Thiel, Erwin, Bruder, Ingmar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6003943/
https://www.ncbi.nlm.nih.gov/pubmed/29907749
http://dx.doi.org/10.1038/s41598-018-27475-1
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author Pekkola, Oili
Lungenschmied, Christoph
Fejes, Peter
Handreck, Anke
Hermes, Wilfried
Irle, Stephan
Lennartz, Christian
Schildknecht, Christian
Schillen, Peter
Schindler, Patrick
Send, Robert
Valouch, Sebastian
Thiel, Erwin
Bruder, Ingmar
author_facet Pekkola, Oili
Lungenschmied, Christoph
Fejes, Peter
Handreck, Anke
Hermes, Wilfried
Irle, Stephan
Lennartz, Christian
Schildknecht, Christian
Schillen, Peter
Schindler, Patrick
Send, Robert
Valouch, Sebastian
Thiel, Erwin
Bruder, Ingmar
author_sort Pekkola, Oili
collection PubMed
description We present the Focus-Induced Photoresponse (FIP) technique, a novel approach to optical distance measurement. It takes advantage of a universally-observed phenomenon in photodetector devices, an irradiance-dependent responsivity. This means that the output from a sensor is not only dependent on the total flux of incident photons, but also on the size of the area in which they fall. If probe light from an object is cast on the detector through a lens, the sensor response depends on how far in or out of focus the object is. We call this the FIP effect. Here we demonstrate how to use the FIP effect to measure the distance to that object. We show that the FIP technique works with different sensor types and materials, as well as visible and near infrared light. The FIP technique operates on a working principle, which is fundamentally different from all established distance measurement methods and hence offers a way to overcome some of their limitations. FIP enables fast optical distance measurements with a simple single-pixel detector layout and minimal computational power. It allows for measurements that are robust to ambient light even outside the wavelength range accessible with silicon.
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spelling pubmed-60039432018-06-26 Focus-Induced Photoresponse: a novel way to measure distances with photodetectors Pekkola, Oili Lungenschmied, Christoph Fejes, Peter Handreck, Anke Hermes, Wilfried Irle, Stephan Lennartz, Christian Schildknecht, Christian Schillen, Peter Schindler, Patrick Send, Robert Valouch, Sebastian Thiel, Erwin Bruder, Ingmar Sci Rep Article We present the Focus-Induced Photoresponse (FIP) technique, a novel approach to optical distance measurement. It takes advantage of a universally-observed phenomenon in photodetector devices, an irradiance-dependent responsivity. This means that the output from a sensor is not only dependent on the total flux of incident photons, but also on the size of the area in which they fall. If probe light from an object is cast on the detector through a lens, the sensor response depends on how far in or out of focus the object is. We call this the FIP effect. Here we demonstrate how to use the FIP effect to measure the distance to that object. We show that the FIP technique works with different sensor types and materials, as well as visible and near infrared light. The FIP technique operates on a working principle, which is fundamentally different from all established distance measurement methods and hence offers a way to overcome some of their limitations. FIP enables fast optical distance measurements with a simple single-pixel detector layout and minimal computational power. It allows for measurements that are robust to ambient light even outside the wavelength range accessible with silicon. Nature Publishing Group UK 2018-06-15 /pmc/articles/PMC6003943/ /pubmed/29907749 http://dx.doi.org/10.1038/s41598-018-27475-1 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Pekkola, Oili
Lungenschmied, Christoph
Fejes, Peter
Handreck, Anke
Hermes, Wilfried
Irle, Stephan
Lennartz, Christian
Schildknecht, Christian
Schillen, Peter
Schindler, Patrick
Send, Robert
Valouch, Sebastian
Thiel, Erwin
Bruder, Ingmar
Focus-Induced Photoresponse: a novel way to measure distances with photodetectors
title Focus-Induced Photoresponse: a novel way to measure distances with photodetectors
title_full Focus-Induced Photoresponse: a novel way to measure distances with photodetectors
title_fullStr Focus-Induced Photoresponse: a novel way to measure distances with photodetectors
title_full_unstemmed Focus-Induced Photoresponse: a novel way to measure distances with photodetectors
title_short Focus-Induced Photoresponse: a novel way to measure distances with photodetectors
title_sort focus-induced photoresponse: a novel way to measure distances with photodetectors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6003943/
https://www.ncbi.nlm.nih.gov/pubmed/29907749
http://dx.doi.org/10.1038/s41598-018-27475-1
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