Mr. Bastian Schwarz Profile

Bastian Schwarz

Research Scientist at Fraunhofer IOSB

SPIE Involvement:

Conference Program Committee | Author

Proceedings Article | 1 November 2024 Presentation + Paper

Development of a sensor hardened against laser damage independent of wavelength by off-focus imaging

M. Henrichsen, C. Eisele, B. Schwarz, J. Limbach, G. Ritt, S. Dengler, J. Meyer

Proceedings Volume 13200, 132000N (2024) https://doi.org/10.1117/12.3030908

KEYWORDS: Sensors, Image restoration, Nonlinear filtering, Laser induced damage, Cameras, Spatial light modulators, Optical filters, Image sensors

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SPIE Journal Paper | 16 April 2024 Open Access

Laser safety for electro-optical imaging systems: exposure limits and hazard distances

Gunnar Ritt, Bastian Schwarz, Bernd Eberle, Michael Henrichsen

OE, Vol. 63, Issue 04, 043101, (April 2024) https://doi.org/10.1117/12.10.1117/1.OE.63.4.043101

KEYWORDS: Cameras, Imaging systems, Laser safety, Electro optical imaging, Image sensors, Electrooptical systems, Electrooptical modeling, Diffraction, Optical engineering, Laser damage threshold

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Proceedings Article | 23 October 2023 Presentation + Paper

An approach for laser safety calculations for electro-optical imaging systems

G. Ritt, B. Schwarz, B. Eberle, M. Henrichsen

Proceedings Volume 12738, 127380F (2023) https://doi.org/10.1117/12.2680178

KEYWORDS: Cameras, Image sensors, Imaging systems, Laser safety, Laser damage threshold, Electro optical imaging, Electrooptical systems, Electro optical modeling

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Proceedings Article | 12 September 2021 Presentation + Paper

Simulating laser dazzling using augmented and virtual reality

M. Henrichsen, G. Ritt, B. Schwarz, S. Stutz, F. Landmann, B. Eberle

Proceedings Volume 11867, 118670F (2021) https://doi.org/10.1117/12.2597302

KEYWORDS: Optical simulations, Virtual reality, Laser safety, Eye, Point spread functions, Laser countermeasures, Augmented reality

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Proceedings Article | 7 October 2019 Paper

NATO SET-249 joint measurement campaign on laser dazzle effects in airborne scenarios

Bernd Eberle, Wesley Kinerk, Michael Koerber, Johan Öhgren, Gunnar Ritt, Cristiane Santos, Bastian Schwarz, Ove Steinvall, Sean Tipper, Marijke Vandewal, Christopher Westgate

Proceedings Volume 11161, 111610C (2019) https://doi.org/10.1117/12.2533744

KEYWORDS: Cameras, Sensors, Laser safety, Laser scattering, Airborne laser technology, Laser sources, Light sources

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In October 2018, NATO SET-249 performed a common trial at WTD 52, Oberjettenberg, Germany, to study laser dazzle effects in an airborne scenario. The facility is equipped with a cable car and is ideal for slanted path experiments from the base station to the cable car where the sensors were mounted. NATO SET-249’s background is laser threat evaluation and the evaluation of the impact of laser eye dazzle on the visual performance of humans. This work gives an overview on the various measurements performed here: 1. Assessment of dazzle effects originating from light scattering at an aircraft canopy by comparing the images of two cameras: one outside and one inside the canopy. The general findings showed that the canopy, which had been used previously on an aircraft, substantially affected the dazzle pattern in the camera within the canopy as compared to the camera outside. 2. Sensor dazzling: Laser dazzling of complementary metal-oxide-semiconductor (CMOS) cameras in the visible domain and, in addition, laser dazzling of a camera equipped with a fisheye lens, which is commonly present in micro-unmanned aerial vehicles, is demonstrated. The dazzled area in the camera field of view (FoV) grows with increasing laser irradiance, and dazzling is effective at irradiance levels around a few μW/cm². 3. An overview on realistic handheld laser engagement scenarios to test the capabilities of a DSTL-developed Laser Event Recorder (LER) is provided. This technology is able to detect continuous wave (CW) and pulsed lasers, and extract their wavelengths, irradiances, Pulse Repetition Frequency (PRF) and directionality. Applications for this LER include collecting information on aircraft laser exposure events, giving information to assess if engagements are eye safe. 4. Measurements performed on various Fraunhofer IOSB developed sensor systems hardened against laser dazzle: The hardening measure of these systems is based either on the use of spatial light modulators or on the implementation of the principle of complementary wavelength bands. The field trial offered the possibility to generate data of the hardened systems under real life conditions.

Proceedings Article | 7 October 2019 Paper

Further investigation on laser-induced damage thresholds of camera sensors and micro-optomechanical systems

Bastian Schwarz, Michael Koerber, Gunnar Ritt, Bernd Eberle

Proceedings Volume 11161, 111610A (2019) https://doi.org/10.1117/12.2533142

KEYWORDS: Sensors, Laser induced damage, Laser damage threshold, Cameras, Imaging systems, Pulsed laser operation, CCD image sensors, Charge-coupled devices, Continuous wave operation, Laser energy

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SPIE Journal Paper | 30 January 2019 Open Access

Preventing image information loss of imaging sensors in case of laser dazzle

Gunnar Ritt, Bastian Schwarz, Bernd Eberle

OE, Vol. 58, Issue 01, 013109, (January 2019) https://doi.org/10.1117/12.10.1117/1.OE.58.1.013109

KEYWORDS: Image fusion, Sensors, Image sensors, Optical sensors, Cameras, Transmittance, Optical filters, Image filtering, Optical components, Imaging systems

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Proceedings Article | 9 October 2018 Paper

Preventing image information loss of imaging sensors in case of laser dazzle

Gunnar Ritt, Bastian Schwarz, Bernd Eberle

Proceedings Volume 10797, 107970R (2018) https://doi.org/10.1117/12.2325307

KEYWORDS: Image fusion, Sensors, Image sensors, Image filtering, Optical sensors, Transmittance, Cameras, Optical filters, Optical components, Channel projecting optics

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Proceedings Article | 9 October 2018 Paper

Maritime laser measurement system: MARLA

Max Schiller, Bastian Schwarz, Gunnar Ritt

Proceedings Volume 10795, 107950F (2018) https://doi.org/10.1117/12.2325113

KEYWORDS: Laser safety, Computing systems, Sensors, Laser systems engineering, Pulsed laser operation, Safety, Cameras, Laser range finders, Data acquisition, Relays

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Proceedings Article | 9 October 2018 Paper

Testbed for thermal imager characterization using an infrared scene projector

Michael Koerber, Daniel Wegner, Bastian Schwarz, Gunnar Ritt, Stefan Kessler, Bernd Eberle

Proceedings Volume 10795, 107950K (2018) https://doi.org/10.1117/12.2325106

KEYWORDS: Projection systems, Thermography, Cameras, Infrared imaging, Calibration, Infrared radiation, Nonuniformity corrections, Image enhancement

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SPIE Journal Paper | 20 March 2017 Open Access

Laser-induced damage threshold of camera sensors and micro-optoelectromechanical systems

Bastian Schwarz, Gunnar Ritt, Michael Koerber, Bernd Eberle

OE, Vol. 56, Issue 03, 034108, (March 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.3.034108

KEYWORDS: Laser damage threshold, Cameras, Sensors, Laser induced damage, Digital micromirror devices, Pulsed laser operation, Imaging systems, CCD cameras, CMOS cameras, Image sensors

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Proceedings Article | 21 October 2016 Paper

Laser-induced damage threshold of camera sensors and micro-opto-electro-mechanical systems

Bastian Schwarz, Gunnar Ritt, Michael Körber, Bernd Eberle

Proceedings Volume 9987, 99870D (2016) https://doi.org/10.1117/12.2241057

KEYWORDS: Laser induced damage, Sensors, Pulsed laser operation, Laser damage threshold, Digital micromirror devices, Image sensors, Cameras, CCD cameras, CMOS cameras, CCD image sensors

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Proceedings Article | 31 October 2014 Paper

Analysis of key properties for optical power limiting and the influence of nonlinear scattering

M. Koerber, A. Azarian, B. Schwarz, B. Eberle

Proceedings Volume 9253, 92530Z (2014) https://doi.org/10.1117/12.2067134

KEYWORDS: Nanoparticles, Gold, Absorption, Optical spheres, Silver, Scattering, Principal component analysis, Bioalcohols, Pulsed laser operation, Mie scattering

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Showing 5 of 13 publications

Conference Committee Involvement (2)

High-Power Lasers and Technologies for Optical Countermeasures II

16 September 2024 | Edinburgh, United Kingdom

Technologies for Optical Countermeasures XIX

5 September 2023 | Amsterdam, Netherlands

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