Dr. Ansgar Hellwig Profile

Dr. Ansgar Hellwig

Optical Engineer at Auer Lighting GmbH

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Publications (9)

Proceedings Article | 4 October 2022 Presentation + Paper

SUPRAX glass optics for automotive application

Ulf Geyer, Ansgar Hellwig, Marc Hübner

Proceedings Volume 12219, 122190G (2022) https://doi.org/10.1117/12.2633277

KEYWORDS: Glasses, Glass molding, Waveguides, Optics manufacturing, Light emitting diodes, Modulation transfer functions, Lenses, Precision glass molding, Polymethylmethacrylate, Polishing

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Proceedings Article | 28 May 2018 Paper

Application of the multiple Cartesian oval method for glass lens design

Ulf Geyer, Ansgar Hellwig, Thomas Heßling, Marc Hübner

Proceedings Volume 10693, 1069308 (2018) https://doi.org/10.1117/12.2313227

KEYWORDS: Light emitting diodes, Glasses, Lens design, Light sources, Ray tracing, Optics manufacturing, Freeform optics, Light sources and illumination

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Proceedings Article | 27 September 2016 Paper

Micro structured glass optics - basics and benefits

Ulf Geyer, Christian Paßlick, Thomas Heßling, Ansgar Hellwig, Marc Hübner

Proceedings Volume 9949, 994908 (2016) https://doi.org/10.1117/12.2236865

KEYWORDS: Glasses, Optics manufacturing, Light emitting diodes, Liquids, Optical spheres, Scattering, Light scattering, Spherical lenses, Polymers, Laser scattering

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Proceedings Article | 27 September 2016 Paper

Glass light guides for color mixing of high-power LEDs

C. Paßlick, U. Geyer, T. Heßling, A. Hellwig, M. Hübner

Proceedings Volume 9949, 994907 (2016) https://doi.org/10.1117/12.2236821

KEYWORDS: Glasses, Light emitting diodes, Waveguides, Glass molding, Polymers, Light sources and illumination, Surface finishing, Light scattering, Zoom lenses, Head

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Proceedings Article | 25 September 2014 Paper

Stability of glass versus plastics for transmissive high-power LED optics

C. Paßlick, A. Hellwig, U. Geyer, T. Heßling, M. Hübner

Proceedings Volume 9192, 919210 (2014) https://doi.org/10.1117/12.2061854

KEYWORDS: Waveguides, Light emitting diodes, Glasses, Absorption, Polymethylmethacrylate, Thermography, Polymers, Silicon, Light sources and illumination, LED lighting

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Proceedings Article | 5 September 2014 Paper

Tailoring free-form glass reflectors towards a homogeneous luminance distribution in roadway applications

Thomas Heßling, Ulf Geyer, Ansgar Hellwig, Christian Paßlick, Marc Hübner

Proceedings Volume 9191, 919106 (2014) https://doi.org/10.1117/12.2061810

KEYWORDS: Roads, Light sources and illumination, Reflectors, Glasses, Light sources, 3D modeling, Superposition, Nonimaging optics, Electroluminescent displays, Reflector design

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Proceedings Article | 19 October 2012 Paper

Applicability of glass for transmission LED optics

Ansgar Hellwig, Ulf Geyer, Thomas Heßling, Marc Hübner

Proceedings Volume 8489, 84890M (2012) https://doi.org/10.1117/12.929812

KEYWORDS: Glasses, Light emitting diodes, Lenses, Transmittance, Absorption, Fresnel lenses, Resistance, Light sources and illumination, Ultraviolet radiation, Refraction

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Proceedings Article | 19 October 2012 Paper

Glass reflectors for LED downlight applications

Ulf Geyer, Ansgar Hellwig, Thomas Heßling, Marc Hübner

Proceedings Volume 8489, 84890J (2012) https://doi.org/10.1117/12.929791

KEYWORDS: Reflectors, Light emitting diodes, Lamps, Glasses, Halogens, Coating, Light sources, Reflectivity, LED lighting, Optical testing

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Proceedings Article | 11 October 2012 Paper

Free-form glass reflectors for non-trivial illumination applications with extended sources

Thomas Heßling, Ulf Geyer, Ansgar Hellwig, Marc Hübner

Proceedings Volume 8485, 84850G (2012) https://doi.org/10.1117/12.929761

KEYWORDS: Light sources and illumination, Glasses, Detection and tracking algorithms, Reflectors, Manufacturing, Electroluminescent displays, Light, Freeform optics, Borosilicate glass, Lamps

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Showing 5 of 9 publications

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