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Freeform Mirror Design for Novel Laser Warning Receivers and Laser Angle of Incidence Sensors
In this paper, we present a novel configuration of an optical angle-of-incidence (AOI) sensor based on the application of a freeform mirror. The main challenge in designing this mirror was to provide a strictly linear transformation between AOI and the spatial position of the spot created on the lin...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7248688/ https://www.ncbi.nlm.nih.gov/pubmed/32366005 http://dx.doi.org/10.3390/s20092569 |
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author | Wojtanowski, Jacek Jakubaszek, Marcin Zygmunt, Marek |
author_facet | Wojtanowski, Jacek Jakubaszek, Marcin Zygmunt, Marek |
author_sort | Wojtanowski, Jacek |
collection | PubMed |
description | In this paper, we present a novel configuration of an optical angle-of-incidence (AOI) sensor based on the application of a freeform mirror. The main challenge in designing this mirror was to provide a strictly linear transformation between AOI and the spatial position of the spot created on the linear detector array. Another two goals of this paper were to minimize stray light issues (improve the dynamic range) and create an intermediate focus and lateral shift in the detector position with respect to the plane of incidence. From an optical point of view, the designed mirror can thus be understood as the composition of three components: a high-numerical-aperture (NA) fully achromatic f-theta lens in one cross-section and a perfectly focusing lens, combined with a deviating prism in the second (orthogonal) cross-section. In comparison to the standard “shade” methods, the proposed approach allows a constant angular resolution to be maintained over the entire field of view. The mirror was designed on the basis of fundamental geometrical rules by numerically solving differential problems using an innovative scheme based on the minimization of the specific merit function. The proposed method was practically applied to design a freeform mirror for a 90°/120° field-of-view sensor, showing a satisfactory performance. |
format | Online Article Text |
id | pubmed-7248688 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-72486882020-08-13 Freeform Mirror Design for Novel Laser Warning Receivers and Laser Angle of Incidence Sensors Wojtanowski, Jacek Jakubaszek, Marcin Zygmunt, Marek Sensors (Basel) Article In this paper, we present a novel configuration of an optical angle-of-incidence (AOI) sensor based on the application of a freeform mirror. The main challenge in designing this mirror was to provide a strictly linear transformation between AOI and the spatial position of the spot created on the linear detector array. Another two goals of this paper were to minimize stray light issues (improve the dynamic range) and create an intermediate focus and lateral shift in the detector position with respect to the plane of incidence. From an optical point of view, the designed mirror can thus be understood as the composition of three components: a high-numerical-aperture (NA) fully achromatic f-theta lens in one cross-section and a perfectly focusing lens, combined with a deviating prism in the second (orthogonal) cross-section. In comparison to the standard “shade” methods, the proposed approach allows a constant angular resolution to be maintained over the entire field of view. The mirror was designed on the basis of fundamental geometrical rules by numerically solving differential problems using an innovative scheme based on the minimization of the specific merit function. The proposed method was practically applied to design a freeform mirror for a 90°/120° field-of-view sensor, showing a satisfactory performance. MDPI 2020-04-30 /pmc/articles/PMC7248688/ /pubmed/32366005 http://dx.doi.org/10.3390/s20092569 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wojtanowski, Jacek Jakubaszek, Marcin Zygmunt, Marek Freeform Mirror Design for Novel Laser Warning Receivers and Laser Angle of Incidence Sensors |
title | Freeform Mirror Design for Novel Laser Warning Receivers and Laser Angle of Incidence Sensors |
title_full | Freeform Mirror Design for Novel Laser Warning Receivers and Laser Angle of Incidence Sensors |
title_fullStr | Freeform Mirror Design for Novel Laser Warning Receivers and Laser Angle of Incidence Sensors |
title_full_unstemmed | Freeform Mirror Design for Novel Laser Warning Receivers and Laser Angle of Incidence Sensors |
title_short | Freeform Mirror Design for Novel Laser Warning Receivers and Laser Angle of Incidence Sensors |
title_sort | freeform mirror design for novel laser warning receivers and laser angle of incidence sensors |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7248688/ https://www.ncbi.nlm.nih.gov/pubmed/32366005 http://dx.doi.org/10.3390/s20092569 |
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