Dr. Ulf Geyer Profile

Dr. Ulf Geyer

Optical Engineer at Auer Lighting GmbH

SPIE Involvement:

Author

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

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 | 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 | 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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SPIE Journal Paper | 1 January 2011 Open Access

Periodic nanostructuring for guided mode extraction in organic light-emitting diodes

Julian Hauss, Boris Riedel, Sebastian Gleiss, Ulf Geyer, Uli Lemmer, Martina Gerken

JPE, Vol. 1, Issue 1, 011012, (January 2011) https://doi.org/10.1117/12.10.1117/1.3544495

KEYWORDS: Organic light emitting diodes, Nanostructuring, Finite-difference time-domain method, Scattering, Glasses, Refraction, Nanolithography, Lithography, Plasma etching, Etching

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Proceedings Article | 19 May 2010 Paper

Optical spectroscopy with organic semiconductor lasers

Sönke Klinkhammer, Thomas Woggon, Christoph Vannahme, Ulf Geyer, Timo Mappes, Uli Lemmer

Proceedings Volume 7722, 77221I (2010) https://doi.org/10.1117/12.854785

KEYWORDS: Semiconductor lasers, Tunable lasers, Organic semiconductors, Photonic crystals, Refractive index, Luminescence, Spectroscopy, Laser scattering, Laser applications, Thin films

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Proceedings Article | 26 August 2008 Paper

Nano-structured metallic electrodes for plasmonic optimized light-emitting diodes

U. Geyer, J. Hetterich, C. Diez, D. Z. Hu, D. Schaadt, U. Lemmer

Proceedings Volume 7032, 70320B (2008) https://doi.org/10.1117/12.794563

KEYWORDS: Metals, Light emitting diodes, Plasmonics, Photoresist materials, Surface plasmons, Electrodes, Silver, Lithography, Photons, Polarization

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Proceedings Article | 12 September 2007 Paper

Organic semiconductor lasers as integrated light sources for optical sensor systems

Martin Punke, Thomas Woggon, Marc Stroisch, Bernd Ebenhoch, Ulf Geyer, Christian Karnutsch, Martina Gerken, Uli Lemmer, Mathias Bruendel, Jing Wang, Thomas Weimann

Proceedings Volume 6659, 665909 (2007) https://doi.org/10.1117/12.733165

KEYWORDS: Semiconductor lasers, Waveguides, Nanoimprint lithography, Laser resonators, Polymethylmethacrylate, Ultraviolet radiation, Laser damage threshold, Organic semiconductors, Resonators, Polymers

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Proceedings Article | 20 April 2006 Paper

Optical and acoustical ridge waveguides based on piezoelectric semiconductors for novel integrated acoustooptic components

Jan Brückner, Jürgen Silbereisen, Dominique Daub, Ulf Geyer, Georg Bastian, Bruno Daniel, Michael Hetterich

Proceedings Volume 6183, 618309 (2006) https://doi.org/10.1117/12.662775

KEYWORDS: Waveguides, Acoustics, Acousto-optics, Integrated optics, Refractive index, Heterojunctions, Optical filters, Modulation, Photons, Dielectric filters

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Showing 5 of 14 publications

Conference Committee Involvement (1)

Polymer Optics and Molded Glass Optics: Design, Fabrication, and Materials 2022

22 August 2022 | San Diego, California, United States

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