Prof. Cornelius F. Hahlweg Profile

Prof. Cornelius F. Hahlweg

Professor at bbw Hochschule

SPIE Involvement:

Conference Chair | Editor | Author

Publications (57)

Proceedings Article | 1 October 2024 Presentation + Paper

Polarimetric imaging mobile phone application for large-area surface inspection

Carlo Martini, Cornelius Hahlweg

Proceedings Volume 13130, 1313008 (2024) https://doi.org/10.1117/12.3028658

KEYWORDS: Dielectric polarization, Light sources and illumination, Inspection, Polarimetry, Tunable filters, Polarization imaging, Reflection, Image acquisition, Dielectrics, Contamination

Read Abstract +

Proceedings Article | 1 October 2024 Presentation + Paper

Modeling dynamic thermal systems with radiation exchange and distributed parameters using thermal-electrical analogy in construction

Jan Laser, Cornelius Hahlweg

Proceedings Volume 13130, 1313004 (2024) https://doi.org/10.1117/12.3028066

KEYWORDS: Solar radiation models, Systems modeling, Modeling, Chemical elements, Thermal modeling, Resistors, Dynamical systems, Solar radiation, Mathematical optimization, Device simulation

Read Abstract +

Proceedings Article | 1 October 2024 Open Access

Optics, arts, and history continued: interaction with new master's degree program in electrical engineering

Christoph Fessler, Cornelius Hahlweg, Jan Laser, Carlo Martini, Witold Stypa

Proceedings Volume 13128, 131280M (2024) https://doi.org/10.1117/12.3028239

KEYWORDS: Electrical engineering, Video, Uranium, Polarization, Education and training, Safety, Windows, Thermal modeling, Systems modeling, Radium

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 3 October 2022 Open Access

Optics, arts, and sound: celebrating 100 years of Kaluza's 5th dimension in a geographically distributed interactive hybrid exhibition

Cornelius Hahlweg, Witold Stypa

Proceedings Volume 12213, 1221307 (2022) https://doi.org/10.1117/12.2633406

KEYWORDS: Video, Modulation, Glasses, Electrical engineering, Physics, Mathematics, Visualization, Superposition, Polishing, Optical spheres

Read Abstract +

DOWNLOAD PAPER

SPIE Journal Paper | 24 April 2021 Open Access

Special Section Guest Editorial: Recent Advances in Lens Design and Optical Engineering

Simon Thibault, R. Barry Johnson, Joseph Mulley, Cornelius Hahlweg

OE, Vol. 60, Issue 05, 051201, (April 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.5.051201

KEYWORDS: Lens design, Optical engineering, Monochromatic aberrations, Optical design, Aspheric lenses, Semiconductor lasers, Zoom lenses, Laser optics, Electronic components, Electro-optical engineering

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 9 September 2019 Paper

Thermal modeling of facade and roof constructions using nonlinear equivalent circuit techniques: review and recent applications

Cornelius Hahlweg, Stefan Marschall, Sebastian Schreiber

Proceedings Volume 11105, 111050G (2019) https://doi.org/10.1117/12.2530079

KEYWORDS: Thermal modeling, Visualization, Circuit switching, Energy efficiency, Radiation effects, Modeling, Electronic components, Electrical engineering, Resistance, Thermography

Read Abstract +

Proceedings Article | 17 September 2018 Paper

Further development of an imaging inspection system for layered surfaces

Janine Brennförder, Cornelius Hahlweg

Proceedings Volume 10746, 107460E (2018) https://doi.org/10.1117/12.2322362

KEYWORDS: Inspection, Imaging systems, Photography, Dielectric polarization, Optical inspection, Image processing, Optical filters, Control systems, Polarization, Cameras

Read Abstract +

In recent years we investigated optical inspection methods for quality control of printed matter. Special imaging processes like reflected shadow imaging in the specular reflex, scanning through focal planes using switched delay elements and narrowing the depth of field by using central stops, and also cross polarization photography were used to separate printed layers from semi-macroscopical structures or textures of glossy surfaces and vice versa. These methods are interesting not only for printed matter, but for several kinds of more or less 2-1/2-D surfaces, like textured metal sheets, lacquered surfaces or laminated material. A similar problem arises in the automated inspection of natural roof tiles, especially from clay slate with fine mica like lamella structure, which is usually the preferred material due to cleavage and easy machining. The typical inspection process involves visual and acoustic checks for possible disintegration of the lamella structure throughout the tile, but it does not necessarily quantify the integrity of the lamellae near surface. Further, the orientation and quality of the breaking edges of the lamellae determines the water flow conditions on the roof and the resistance against frost damages, which is to be considered in the finishing process when the tile is cut from the blank and again when installing the tile. While traditionally the slate production involves manual and visual inspection in every step, an automated inspection method for pre-selection and orientation of blanks as well as documented and certified onsite inspection are desirable. The present paper is dedicated to the development of a robust and rugged imaging system, which emphasizes the slate structure in orthogonal view an allows the discrimination of elevated edges from color variations and the extraction of the edge orientation in both longitudinal and transversal directions. In the paper we discuss our current investigations, the system concept and application examples and present some illustrative measurement results.

Proceedings Article | 17 September 2018 Paper

Standard specifications vs metrology of LED illumination systems

Stefan Marschall, Nikolai Schedrick, Cornelius Hahlweg

Proceedings Volume 10746, 107460H (2018) https://doi.org/10.1117/12.2323884

KEYWORDS: Light emitting diodes, Metrology, Standards development, Light sources, LED lighting, Lamps, Modulation, Safety, Electroluminescence, Light sources and illumination

Read Abstract +

Proceedings Article | 14 September 2018 Open Access

Implementing optics courses in dual engineering university programs: challenges and perspectives

Janine Brennförder, Cornelius Hahlweg

Proceedings Volume 10741, 1074104 (2018) https://doi.org/10.1117/12.2322360

KEYWORDS: Electrical engineering, Control systems, Communication engineering, Mathematics, Internet, Integrated optics, Glasses, Optical communications, Materials science, Computer engineering

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 30 September 2016 Presentation + Paper

Generation of rhythm patterns from harmonic structures in power modulated light

Cornelius Hahlweg, Kai Jäger, Cornelia Weyer, Jürgen Weiß

Proceedings Volume 9948, 99480X (2016) https://doi.org/10.1117/12.2237891

KEYWORDS: Modulation, Light sources, Acoustics, Occupational medicine, Optical design, Multimedia, Visualization, Superposition, Mathematics, Amplitude modulation

Read Abstract +

Proceedings Article | 27 September 2016 Open Access

Optics and optronics in university courses for officers of the Federal Armed Forces - special curricula and hands-on lessons vs. academic requirements

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 9946, 99460J (2016) https://doi.org/10.1117/12.2238055

KEYWORDS: Image processing, Digital image processing, Optoelectronics, Mechanical engineering, Sensors, MATLAB, Video, Mechanics, Mechatronics, Electrical engineering

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 9 September 2015 Paper

A quintuple of painful lessons from surface inspection to high-speed imaging

Cornelius Hahlweg, Hendrik Rothe, Cornelia Weyer

Proceedings Volume 9583, 95830I (2015) https://doi.org/10.1117/12.2188707

KEYWORDS: Short wave infrared radiation, Diffraction, Diffraction gratings, Optical filters, Inspection, Visualization, High speed imaging, Calibration, Black bodies, Lamps

Read Abstract +

Proceedings Article | 3 September 2015 Paper

Further development of imaging near-field scatterometer

Denise Uebeler, Lukas Pescoller, Cornelius Hahlweg

Proceedings Volume 9579, 95790C (2015) https://doi.org/10.1117/12.2188118

KEYWORDS: Near field, Diffraction, System on a chip, Polarization, Inspection, Decision support systems, Imaging systems, Image processing, Reflection, Prototyping

Read Abstract +

Proceedings Article | 3 September 2015 Open Access

Endoscopic system for automated high dynamic range inspection of moving periodic structures (Withdrawal Notice)

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 9579, 957908 (2015) https://doi.org/10.1117/12.2188726

KEYWORDS: Endoscopy, High dynamic range imaging, Inspection, Optical design, Current controlled current source

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 2 September 2015 Paper

Extended volume and surface scatterometer for optical characterization of 3D-printed elements

Florian Dannenberg, Denise Uebeler, Jürgen Weiß, Lukas Pescoller, Cornelia Weyer, Cornelius Hahlweg

Proceedings Volume 9573, 957307 (2015) https://doi.org/10.1117/12.2189546

KEYWORDS: Printing, Fused deposition modeling, Inspection, Translucency, Optical components, Near field optics, Near field, Luminescence, Scatterometry, Imaging systems

Read Abstract +

Proceedings Article | 1 September 2015 Paper

A rugged stereoscopical device for surface inspection

Florian Dannenberg, Cornelius Hahlweg, Lukas Pescoller, Jürgen Weiß

Proceedings Volume 9576, 957602 (2015) https://doi.org/10.1117/12.2188649

KEYWORDS: Inspection, Imaging systems, Cameras, Sensors, Printing, Distortion, Tolerancing, Control systems, Head, Microscopes

Read Abstract +

Proceedings Article | 18 September 2014 Paper

Investigation of correlation of LF power modulation of light in natural and artificial illumination situations and acoustic emission

Florian Kleeberg, Holger Gutzmann, Cornelia Weyer, Jürgen Weiß, Joachim Dörfler, Cornelius Hahlweg

Proceedings Volume 9190, 919003 (2014) https://doi.org/10.1117/12.2062332

KEYWORDS: Modulation, Acoustics, Lamps, Fluctuations and noise, Light sources, Coherence (optics), Light emitting diodes, Acoustic emission, Phase shift keying, Occupational medicine

Read Abstract +

Proceedings Article | 12 September 2014 Paper

Chords and harmonies in mixed optical and acoustical stimuli

Cornelius Hahlweg, Florian Dannenberg, Joachim Dörfler, Bernhard Weber, Cornelia Weyer, Harald Gercke-Hahn, Steffen Freimuth, Sören Heucke, Holger Ludwig Gutzmann

Proceedings Volume 9193, 91930P (2014) https://doi.org/10.1117/12.2062325

KEYWORDS: Modulation, Acoustics, Light sources, Coherence (optics), Amplifiers, Occupational medicine, Linear filtering, Multimedia, Visualization, Amplitude modulation

Read Abstract +

Proceedings Article | 12 September 2014 Paper

Near-field imaging techniques for surface inspection

Florian Dannenberg, Cornelius Hahlweg, Lukas Pescoller, Wenjing Zhao

Proceedings Volume 9193, 91930Q (2014) https://doi.org/10.1117/12.2062316

KEYWORDS: Image processing, Inspection, Imaging systems, Near field, Reflection, Light sources, Glasses, Near field optics, Scatterometry, Printing

Read Abstract +

Proceedings Article | 30 September 2013 Paper

Applied paraxial methods and some philosophical questions

Cornelius Hahlweg, Wenjing Zhao, Joachim Doerfler, Hendrik Rothe

Proceedings Volume 8842, 88420A (2013) https://doi.org/10.1117/12.2023700

KEYWORDS: Mirrors, Geometrical optics, Refraction, Imaging systems, Spherical lenses, Fourier optics, Refractive index, Paraxial approximations, Electrical engineering, Sensors

Read Abstract +

Proceedings Article | 30 September 2013 Paper

Special high speed imaging techniques using phase, aperture, and polarization effects

Wenjing Zhao, Daniel Skaloud, Sascha Kutz, Hendrik Rothe, Cornelius Hahlweg

Proceedings Volume 8842, 884208 (2013) https://doi.org/10.1117/12.2023677

KEYWORDS: Polarization, Glasses, Video, Cameras, Explosives, Optical filters, Lamps, High speed imaging, Solids, Visualization

Read Abstract +

Proceedings Article | 30 September 2013 Paper

Visualization of sound generation: special imaging techniques

Cornelius Hahlweg, Daniel Skaloud, Holger Gutzmann, Sascha Kutz, Hendrik Rothe

Proceedings Volume 8842, 88420J (2013) https://doi.org/10.1117/12.2022268

KEYWORDS: Glasses, Video, Visualization, Polarization, Neck, Video processing, Optical spheres, Spherical lenses, Imaging systems, Photoelasticity

Read Abstract +

Proceedings Article | 30 September 2013 Paper

Perception of power modulation of light in conjunction with acoustic stimulation

Cornelius Hahlweg, Cornelia Weyer, Harald Gercke-Hahn, Holger Gutzmann, Andre Brahmann, Hendrik Rothe

Proceedings Volume 8842, 88420K (2013) https://doi.org/10.1117/12.2024291

KEYWORDS: Lamps, Acoustics, Modulation, Light sources, Oscilloscopes, Electroencephalography, Light emitting diodes, Occupational medicine, Coherence (optics), Electronics

Read Abstract +

Proceedings Article | 30 September 2013 Paper

Inspection and characterization of flexo-printing plates

Cornelius Hahlweg, Lukas Pescoller, Wenjing Zhao

Proceedings Volume 8842, 88420M (2013) https://doi.org/10.1117/12.2024318

KEYWORDS: Imaging systems, Sensors, Inspection, Printing, Optical inspection, Chemical elements, Optical components, Optical resolution, Optical design, Microscopes

Read Abstract +

Proceedings Article | 30 September 2013 Paper

The unique sound of the uni-vibe pedal: Part II. Transient behaviour

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 8842, 88420I (2013) https://doi.org/10.1117/12.2021481

KEYWORDS: Systems modeling, Modulation, Transform theory, Phase modulation, Phase shift keying, Resistors, Optical design, Photoresistors, Resistance, Computing systems

Read Abstract +

Proceedings Article | 19 October 2012 Paper

Uranium glass in optics: historical review and current research

Cornelius Hahlweg, Wenjing Zhao, Hendrik Rothe

Proceedings Volume 8487, 84870S (2012) https://doi.org/10.1117/12.929568

KEYWORDS: Glasses, Calibration, Lithium, Luminescence, Scatterometry, Fluorescent materials, Scattering, Lanthanum, Optical spheres, Imaging devices

Read Abstract +

Proceedings Article | 19 October 2012 Paper

The unique sound of the Univibe pedal

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 8487, 84870R (2012) https://doi.org/10.1117/12.929584

KEYWORDS: Signal processing, Systems modeling, Second-harmonic generation, Distortion, Resistors, Electronics, Lamps, Capacitors, Bridges, Phase shift keying

Read Abstract +

Proceedings Article | 19 October 2012 Paper

Design of scale distorting imaging devices with tilted object plane

Cornelius Hahlweg, Lukas Pescoller

Proceedings Volume 8487, 84870I (2012) https://doi.org/10.1117/12.929595

KEYWORDS: Imaging systems, Lenses, Cylindrical lenses, Imaging devices, Lens design, Spherical lenses, Image sensors, Distortion, Fourier optics, Image compression

Read Abstract +

Proceedings Article | 15 October 2012 Paper

Design of combined microscopical and scatterometrical imaging device of surface inspection

Wenjing Zhao, Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 8495, 849506 (2012) https://doi.org/10.1117/12.929473

KEYWORDS: Cameras, Microscopes, Diffraction, Inspection, Imaging systems, Dielectrophoresis, Fourier transforms, Image sensors, Spatial frequencies, Refractor telescopes

Read Abstract +

Proceedings Article | 15 October 2012 Paper

Surface characterization using combined analysis of original and scatter image

Wenjing Zhao, Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 8495, 849508 (2012) https://doi.org/10.1117/12.929472

KEYWORDS: Cameras, Diffraction gratings, Mirrors, Microscopes, Imaging systems, Beam splitters, Image analysis, Diffraction, CMOS cameras, Image fusion

Read Abstract +

Proceedings Article | 11 October 2012 Paper

Imaging of short time microscopic scenes with strong light emission: revisited

Cornelius Hahlweg, Wenjing Zhao, Hendrik Vogeler, Hendrik Rothe

Proceedings Volume 8466, 84660K (2012) https://doi.org/10.1117/12.929577

KEYWORDS: Scatterometry, Cameras, High dynamic range imaging, Camera shutters, CCD cameras, Imaging systems, Explosives, Mirrors, Optical properties, Image processing

Read Abstract +

Proceedings Article | 20 September 2011 Paper

Verification of scatterometer design

Wenjing Zhao, Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 8105, 810509 (2011) https://doi.org/10.1117/12.893511

KEYWORDS: Mirrors, Cameras, Diffraction gratings, Combined lens-mirror systems, Reflection, Diffraction, Data processing, Imaging systems, Metrology, Optical design

Read Abstract +

Proceedings Article | 20 September 2011 Paper

Laser based imaging of time depending microscopic scenes with strong light emission

Cornelius Hahlweg, Eugen Wilhelm, Hendrik Rothe

Proceedings Volume 8105, 81050J (2011) https://doi.org/10.1117/12.893526

KEYWORDS: Explosives, Cameras, Optical filters, LIDAR, Signal attenuation, Telescopes, High speed cameras, Doppler effect, Video, Diffraction

Read Abstract +

Proceedings Article | 17 September 2011 Paper

Backscatter behaviour and tracking of ogive shaped objects in optical range

Uwe Chalupka, Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 8137, 813705 (2011) https://doi.org/10.1117/12.893397

KEYWORDS: Receivers, Light sources, Optical spheres, Nose, Ray tracing, Optical tracking, Imaging systems, Computer simulations, Cameras, Collimation

Read Abstract +

Proceedings Article | 17 September 2011 Paper

Lambert's multiple reflection model revisited

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 8127, 812707 (2011) https://doi.org/10.1117/12.893452

KEYWORDS: Lenses, Refraction, Reflection, Spherical lenses, Geometrical optics, Diffraction, Scatterometry, Refractor telescopes, Matrices, Systems modeling

Read Abstract +

Proceedings Article | 17 September 2011 Paper

Fourier planes vs. Scheimpflug principle in microscopic and scatterometric devices

Cornelius Hahlweg, Wenjing Zhao, Hendrik Rothe

Proceedings Volume 8127, 812708 (2011) https://doi.org/10.1117/12.893470

KEYWORDS: Mirrors, Imaging devices, Diffraction, Imaging systems, Microscopy, Microscopes, Inspection, Refractor telescopes, Off axis mirrors, Fourier transforms

Read Abstract +

Proceedings Article | 2 September 2010 Paper

Design rules for catadioptric scatterometers based on measurement requirements

Wenjing Zhao, Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 7792, 77920B (2010) https://doi.org/10.1117/12.860173

KEYWORDS: Mirrors, Imaging systems, Scatter measurement, Combined lens-mirror systems, Diffraction, CMOS sensors, Reflection, Spatial resolution, Optical filters, Data processing

Read Abstract +

Proceedings Article | 2 September 2010 Paper

Investigations on back scatter of typical projectiles for application of laser based trajectory measurement

Wenjing Zhao, Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 7792, 77920K (2010) https://doi.org/10.1117/12.860588

KEYWORDS: Surface finishing, Polishing, Laser scattering, Cameras, Optical spheres, Metrology, Reflection, Backscatter, Imaging systems, Image processing

Read Abstract +

Proceedings Article | 2 September 2010 Paper

A stereoscopic imaging system for laser back-scatter-based trajectory measurement in ballistics

Eugen Wilhelm, Uwe Chalupka, Cornelius Hahlweg, Wenjing Zhao, Hendrik Rothe

Proceedings Volume 7792, 77920N (2010) https://doi.org/10.1117/12.860568

KEYWORDS: Cameras, Sensors, Imaging systems, Image segmentation, Device simulation, Error analysis, Weapons, Optical simulations, Stereoscopy, Modulation

Read Abstract +

Proceedings Article | 2 September 2010 Paper

Time depending techniques for volume and discrete boundary surface scatterometry and part II of a lost chapter in Lambert's Photometria on multiple reflection

Cornelius Hahlweg, Burkhard Meißner, Wenjing Zhao, Hendrik Rothe

Proceedings Volume 7792, 77920A (2010) https://doi.org/10.1117/12.860170

KEYWORDS: Reflection, LIDAR, Scatterometry, Interferometry, Refractor telescopes, Laser scattering, Signal processing, Multiplexers, Transmitters, Receivers

Read Abstract +

Proceedings Article | 20 August 2010 Paper

The idea of the Lambertian surface: history, idealization, and system theoretical aspects and part 1 of a lost chapter on multiple reflection

Cornelius Hahlweg, Burkhard Meißner, Wenjing Zhao, Hendrik Rothe

Proceedings Volume 7792, 779202 (2010) https://doi.org/10.1117/12.860172

KEYWORDS: Reflection, Atrial fibrillation, Reflectivity, Refractor telescopes, Eye, Photometry, Sun, Diffraction, Light, Fourier transforms

Read Abstract +

Proceedings Article | 21 August 2009 Paper

Spectral effects of AFM tip geometry

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 7405, 74050I (2009) https://doi.org/10.1117/12.826835

KEYWORDS: Atomic force microscopy, Convolution, Signal processing, Image processing, Spherical lenses, Spatial frequencies, Statistical analysis, Optical spheres, Spatial resolution, Image quality

Read Abstract +

Proceedings Article | 21 August 2009 Paper

Non-linear distortions caused by AFM-tip geometry and limitations of reconstruction on discrete data

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 7405, 74050K (2009) https://doi.org/10.1117/12.826855

KEYWORDS: Spherical lenses, Signal analyzers, Inverse problems, Signal processing, Convolution, Mathematics, Fourier transforms, Systems modeling, Phase measurement, Deconvolution

Read Abstract +

Proceedings Article | 12 August 2009 Paper

Macroscopical scatter and reflection behavior of convex bodies in free flight

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 7458, 74580K (2009) https://doi.org/10.1117/12.826925

KEYWORDS: Imaging systems, Optical spheres, Receivers, LIDAR, Cameras, Reflection, Numerical analysis, Laser development, Laser processing, Mathematical modeling

Read Abstract +

Proceedings Article | 25 September 2008 Paper

Optical compensation of macroscopical surface curvature in rough surface scatterometry

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 7102, 71020Z (2008) https://doi.org/10.1117/12.799065

KEYWORDS: Scatterometry, Diffraction, Modulation, Light scattering, Mirrors, Surface finishing, Wavefronts, Spherical lenses, Phase shift keying, Receivers

Read Abstract +

Proceedings Article | 29 August 2008 Paper

Rough surface scatterometry of bodies with rotational symmetry

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 7065, 70650H (2008) https://doi.org/10.1117/12.795891

KEYWORDS: Scatterometry, Diffraction, Modulation, Mirrors, Light scattering, Surface finishing, Phase shift keying, Scattering, Wavefronts, Polishing

Read Abstract +

Proceedings Article | 29 August 2008 Paper

Utilization of the Scheimpflug-principle in scatterometer design

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 7065, 706507 (2008) https://doi.org/10.1117/12.794939

KEYWORDS: Mirrors, Diffraction, Imaging systems, Imaging devices, Sensors, Spherical lenses, Optical components, Optical imaging, Scatterometry, Geometrical optics

Read Abstract +

Proceedings Article | 13 September 2007 Paper

Non-goniometric scatterometry: a review

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 6682, 66820D (2007) https://doi.org/10.1117/12.734098

KEYWORDS: Mirrors, Sensors, Diffraction, Imaging systems, Scatterometry, Spherical lenses, Cameras, Convolution, Optical spheres, Polarization

Read Abstract +

Proceedings Article | 10 September 2007 Paper

Theoretical and experimental investigations of non-goniometric scatterometry

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 6672, 66720K (2007) https://doi.org/10.1117/12.767684

KEYWORDS: Mirrors, Sensors, Imaging systems, Spherical lenses, Scatterometry, Feature extraction, Diffraction, Convolution, Optical spheres, Cameras

Read Abstract +

Proceedings Article | 17 February 2007 Paper

Spectroscopic imaging from 400nm to 1800nm with liquid crystal tunable filters

C. Hahlweg, H. Rothe

Proceedings Volume 6503, 650307 (2007) https://doi.org/10.1117/12.705874

KEYWORDS: Cameras, Short wave infrared radiation, Tunable filters, Optical filters, Liquid crystals, Imaging spectroscopy, Spectroscopy, Imaging systems, Near infrared, Chemical elements

Read Abstract +

Proceedings Article | 5 October 2006 Paper

Hemispherical radiometer for angle resolved measurement of IR scatter and radiation behaviour

C. Hahlweg, H. Rothe

Proceedings Volume 6396, 63960F (2006) https://doi.org/10.1117/12.690179

KEYWORDS: Mirrors, Sensors, Cameras, Scatter measurement, Calibration, Short wave infrared radiation, Infrared imaging, Bidirectional reflectance transmission function, Radiometry, Infrared radiation

Read Abstract +

Proceedings Article | 20 October 2005 Paper

Design of a full-hemispherical spectro-radiometer with high dynamic range for characterization of surface properties using multispectral BRDF data from VIS to NIR

C. Hahlweg, H. Rothe

Proceedings Volume 5965, 596519 (2005) https://doi.org/10.1117/12.624832

KEYWORDS: Mirrors, Sensors, Bidirectional reflectance transmission function, Calibration, Imaging systems, Cameras, Image sensors, Light sources, Light emitting diodes, Reflectivity

Read Abstract +

Proceedings Article | 20 October 2005 Paper

Classification of optical surface properties and material recognition using mutlispectral BRDF data measured with a semihemispherical spectro-radiometer in VIS and NIR

C. Hahlweg, H. Rothe

Proceedings Volume 5965, 59650G (2005) https://doi.org/10.1117/12.624838

KEYWORDS: Bidirectional reflectance transmission function, Mirrors, Sensors, Imaging systems, Surface properties, Near infrared, Data acquisition, Cameras, Spatial resolution, CMOS sensors

Read Abstract +

Proceedings Article | 15 October 2004 Paper

Calibration procedures and measurement results of a fast semihemispherical spectroradiometer in VIS and NIR

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 5546, (2004) https://doi.org/10.1117/12.555902

KEYWORDS: Sensors, Calibration, Bidirectional reflectance transmission function, Mirrors, Reflectivity, Near infrared, Light sources, Light emitting diodes, Diffraction gratings, Spatial resolution

Read Abstract +

Proceedings Article | 15 October 2004 Paper

Design of a semihemispherical spectroradiometer for fast acquisition of BRDF libraries in VIS and NIR

Cornelius Hahlweg, Hendrik Rothe

Proceedings Volume 5546, (2004) https://doi.org/10.1117/12.555815

KEYWORDS: Sensors, Bidirectional reflectance transmission function, Spatial resolution, Mirrors, Light emitting diodes, Calibration, Light sources, CMOS sensors, Luminescence, Copper

Read Abstract +

Proceedings Article | 16 October 2003 Paper

Estimation of performance limits of multipole method using parallel computing techniques

Cornelius Hahlweg, Thomas Rinder, Hendrik Rothe

Proceedings Volume 5189, (2003) https://doi.org/10.1117/12.509479

KEYWORDS: Scattering, Parallel computing, Computing systems, Dielectrics, Atomic force microscopy, Matrices, Particles, Modeling, Software development, Gold

Read Abstract +

Proceedings Article | 16 October 2003 Paper

Deducing light scatter from AFM measurements

Cornelius Hahlweg, Thomas Rinder, Peter Thomsen-Schmidt, C. Groh, Hendrik Rothe

Proceedings Volume 5189, (2003) https://doi.org/10.1117/12.505016

KEYWORDS: Light scattering, Atomic force microscopy, Scatter measurement, Scattering, Diffraction gratings, Bidirectional reflectance transmission function, Diffraction, Gold, Dielectrics, Inverse problems

Read Abstract +