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MERTIS: geometrical calibration of thermal infrared optical system by applying diffractive optical elements

Bauer, Martin and Baumbach, Dirk and Buder, Maximilian and Börner, Anko and Grießbach, Denis and Peter, Gisbert and Santjer, Eilke and Säuberlich, Thomas and Schischmanow, Adrian and Schrader, Sigurd and Walter, Ingo (2015) MERTIS: geometrical calibration of thermal infrared optical system by applying diffractive optical elements. Proc. SPIE, 9608.

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Official URL: http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2436088

Abstract

Geometrical sensor calibration is essential for space applications based on high accuracy optical measurements, in this case for the thermal infrared push-broom imaging spectrometer MERTIS. The goal is the determination of the interior sensor orientation. A conventional method is to measure the line of sight for a subset of pixels by single pixel illumination with collimated light. To adjust angles, which define the line of sight of a pixel, a manipulator construction is used. A new method for geometrical sensor calibration is using Diffractive Optical Elements (DOE) in connection with laser beam equipment. Diffractive optical elements (DOE) are optical microstructures, which are used to split an incoming laser beam with a dedicated wavelength into a number of beams with well-known propagation directions. As the virtual sources of the diffracted beams are points at infinity, the resulting image is invariant against translation. This particular characteristic allows a complete geometrical sensor calibration with only one taken image avoiding complex adjustment procedures, resulting in a significant reduction of calibration effort. We present a new method for geometrical calibration of a thermal infrared optical system, including an thermal infrared test optics and the MERTIS spectrometer bolometer detector. The fundamentals of this new approach for geometrical infrared optical systems calibration by applying diffractive optical elements and the test equipment are shown. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Item URL in elib:https://elib.dlr.de/99007/
Document Type:Proceedings
Title:MERTIS: geometrical calibration of thermal infrared optical system by applying diffractive optical elements
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bauer, MartinAirbus Defense and SpaceUNSPECIFIED
Baumbach, DirkDLR, Institut für Optische SensorsystemeUNSPECIFIED
Buder, MaximilianDLR, Institut für Optische SensorsystemeUNSPECIFIED
Börner, AnkoDLR, Institut für Optische SensorsystemeUNSPECIFIED
Grießbach, DenisDLR, Institut für Optische SensorsystemeUNSPECIFIED
Peter, GisbertDLR, Institut für Optische SensorsystemeUNSPECIFIED
Santjer, EilkeDLR, Institut für Optische SensorsystemeUNSPECIFIED
Säuberlich, ThomasDLR, Institut für Optische SensorsystemeUNSPECIFIED
Schischmanow, AdrianDLR, Institut für Optische SensorsystemeUNSPECIFIED
Schrader, SigurdTechnische Hochschule WildauUNSPECIFIED
Walter, IngoDLR, Institut für Optische SensorsystemeUNSPECIFIED
Date:1 September 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:9608
DOI :10.1117/12.2188120
Series Name:Proc. SPIE
Status:Published
Keywords:Calibration ; Diffractive optical elements ; Optical systems ; Sensor calibration ; Sensors ; Spectrometers ; Vision ; Lasers ; Bolometers ; Optical testing
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben BepiColombo (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Information Processing for Optical Systems
Institute of Optical Sensor Systems > Optics, Calibration and Validation
Deposited By: Schischmanow, Adrian
Deposited On:09 Nov 2015 06:39
Last Modified:10 May 2016 23:33

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