Dr. Aleksandra Cvetkovic Profile

Dr. Aleksandra Cvetkovic

R&D Product Engineer

SPIE Involvement:

Author

Area of Expertise:

nonimaging optics , illumination , concentration photovoltaics , optical design

Publications (22)

Proceedings Article | 23 September 2015 Paper

Freeform étendue-preserving optics for light and color mixing

Simone Sorgato, Rubén Mohedano, Julio Chaves, Aleksandra Cvetkovic, Maikel Hernández, Pablo Benítez, Juan Miñano, Hugo Thienpont, Fabian Duerr

Proceedings Volume 9629, 962905 (2015) https://doi.org/10.1117/12.2191048

KEYWORDS: Spherical lenses, Microlens, Light emitting diodes, Receivers, Lenses, Light, Freeform optics, Diffusers, Reflectors, Prototyping

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Proceedings Article | 25 August 2015 Paper

Efficient color mixing through étendue conservation using freeform optics

Simone Sorgato, Rubén Mohedano, Julio Chaves, Aleksandra Cvetkovic, Maikel Hernández, Pablo Benitez, Juan Miñano, Hugo Thienpont, Fabian Duerr

Proceedings Volume 9572, 95720G (2015) https://doi.org/10.1117/12.2186965

KEYWORDS: Spherical lenses, Light emitting diodes, Light, Sensors, Freeform optics, Microlens, Reflectors, Diffusers, Lenses, RGB color model

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SPIE Journal Paper | 29 December 2014

Plasma etching antireflection nanostructures on optical elements in concentrator photovoltaic systems

Efrain Eduardo Tamayo Ruiz, Kentaroh Watanabe, Ryo Tamaki, Takuya Hoshii, Masakazu Sugiyama, Yoshitaka Okada, Kenjiro Miyano, Aleksandra Cvetkovic, Rubén Mohedano, Maikel Hernández

JPE, Vol. 5, Issue 01, 057006, (December 2014) https://doi.org/10.1117/12.10.1117/1.JPE.5.057006

KEYWORDS: Plasma etching, Transmittance, Nanostructures, Optical components, Antireflective coatings, Polymethylmethacrylate, External quantum efficiency, Interfaces, Glasses, Nanostructuring

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Proceedings Article | 18 December 2012 Paper

Inhomogeneous source uniformization using a shell mixer Köhler integrator

J. Chaves, A. Cvetkovic, R. Mohedano, O. Dross, M. Hernandez, P. Benítez, J. Miñano, J. Vilaplana

Proceedings Volume 8550, 85502X (2012) https://doi.org/10.1117/12.981004

KEYWORDS: Light emitting diodes, Light sources, Lenses, Light, Diffusers, Collimation, Channel projecting optics, Receivers, Reflectors, Prototyping

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SPIE Journal Paper | 16 October 2012

Experimental characterization of Fresnel-Köhler concentrators

Pablo Zamora, Pablo Benítez, Rubén Mohedano Arroyo, Aleksandra Cvetkovic, Juan Vilaplana, Yang Li, Maikel Hernández, Julio Chaves, Juan Miñano

JPE, Vol. 2, Issue 1, 021806, (October 2012) https://doi.org/10.1117/12.10.1117/1.JPE.2.021806

KEYWORDS: Solar concentrators, Prototyping, Electrical efficiency, Solar cells, Solar energy, Dispersion, Fresnel lenses, Temperature metrology, Sun, Optics manufacturing

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Proceedings Article | 11 October 2012 Paper

Primary optics for efficient high-brightness LED colour mixing

A. Cvetkovic, R. Mohedano, O. Dross, M. Hernandez, P. Benítez, J. Miñano, J. Vilaplana, J. Chaves

Proceedings Volume 8485, 84850Q (2012) https://doi.org/10.1117/12.931508

KEYWORDS: Light emitting diodes, Near field optics, Light sources, Collimation, Prototyping, Light, Reflectors, Reflectivity, Diffusers, Integrated optics

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Proceedings Article | 10 October 2012 Paper

1000x shadow-free mirror-based Köhler concentrator

Maikel Hernandez, Pablo Benítez, João Mendes-Lopes, Aleksandra Cvetkovic, Yupin Sun, Juan Carlos Miñano, Julio Chaves, Rubén Mohedano

Proceedings Volume 8468, 84680C (2012) https://doi.org/10.1117/12.931657

KEYWORDS: Solar concentrators, Solar cells, Glasses, Optics manufacturing, Mirrors, Sun, Optical components, Coating, Prisms, Antireflective coatings

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Proceedings Article | 10 November 2010 Paper

Free-form Köhler nonimaging optics for photovoltaic concentration

Pablo Benítez, Juan Miñano, Pablo Zamora, Marina Buljan, Aleksandra Cvetković, Maikel Hernandez, Rubén Mohedano, Julio Chaves, Oliver Dross

Proceedings Volume 7849, 78490K (2010) https://doi.org/10.1117/12.873884

KEYWORDS: Solar concentrators, Sun, Fresnel lenses, Solar cells, Mirrors, Antireflective coatings, Tolerancing, Optics manufacturing, Optical design, Optical components

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Proceedings Article | 19 August 2010 Paper

CPV and illumination systems based on XR-Köhler devices

Maikel Hernandez, Aleksandra Cvetkovic, Pablo Benitez, Juan Carlos Miñano, Waqidi Falicoff, Yupin Sun, Julio Chaves, Ruben Mohedano

Proceedings Volume 7785, 77850A (2010) https://doi.org/10.1117/12.861968

KEYWORDS: Solar concentrators, Solar cells, Light emitting diodes, Mirrors, Sun, Glasses, Wavefronts, Reflectivity, Tolerancing, Collimators

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Proceedings Article | 18 August 2010 Paper

High performance Fresnel-based photovoltaic concentrator

Pablo Zamora, Pablo Benítez, Juan Miñano, Rubén Mohedano, Aleksandra Cvetkovic, Marina Buljan, Julio Chaves

Proceedings Volume 7785, 778504 (2010) https://doi.org/10.1117/12.860670

KEYWORDS: Solar concentrators, Fresnel lenses, Optics manufacturing, Tolerancing, Antireflective coatings, Optical components, Sun, Spherical lenses, Manufacturing, Solar cells

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Proceedings Article | 18 August 2010 Paper

Performance comparison of Fresnel-based concentrator arrays

Rubén Mohedano, Aleksandra Cvetkovic, Pablo Benítez, Pablo Zamora, Juan Miñano, Julio Chaves, Maikel Hernandez, Marina Buljan, Juan Vilaplana

Proceedings Volume 7785, 778508 (2010) https://doi.org/10.1117/12.862253

KEYWORDS: Solar concentrators, Tolerancing, Manufacturing, Fresnel lenses, Optics manufacturing, Solar cells, Receivers, Diodes, Electrical efficiency, Optical components

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Proceedings Article | 24 August 2009 Open Access

High performance concentrating photovoltaic module designs for utility scale power generation

Adam Plesniak, Russ Jones, Joel Schwartz, Guy Martins, John Hall, Authi Narayanan, David Whelan, Pablo Benítez, Juan Miñano, Aleksandra Cvetkovic, Maikel Hernandez, Oliver Dross, Roberto Alvarez

Proceedings Volume 7407, 740704 (2009) https://doi.org/10.1117/12.827789

KEYWORDS: Prototyping, Optical design, Solar concentrators, Solar cells, Computer aided design, Mirrors, Optics manufacturing, Geometrical optics, Brain-machine interfaces, Electroluminescence

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Proceedings Article | 24 September 2008 Paper

Köhler integrators embedded into illumination optics add functionality

O. Dross, R. Mohedano, M. Hernández, A. Cvetkovic, J. Miñano, P. Benítez

Proceedings Volume 7103, 71030G (2008) https://doi.org/10.1117/12.798111

KEYWORDS: Solar cells, Mirrors, Solar concentrators, Sun, Light emitting diodes, Microlens, Microlens array, Reflectivity, Integrated optics, Collimation

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Proceedings Article | 9 September 2008 Paper

The SMS3D photovoltaic concentrator

Aleksandra Cvetković, Maikel Hernandez, Pablo Benítez, Juan Carlos Miñano, Joel Schwartz, Adam Plesniak, Russ Jones, David Whelan

Proceedings Volume 7059, 705909 (2008) https://doi.org/10.1117/12.795861

KEYWORDS: Solar concentrators, Wavefronts, Mirrors, Photovoltaics, Reflectivity, Nonimaging optics, Optics manufacturing, Optical design, Tolerancing, Prisms

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Proceedings Article | 9 September 2008 Paper

The free form XR photovoltaic concentrator: a high performance SMS3D design

Aleksandra Cvetkovic, Maikel Hernandez, Pablo Benítez, Juan C. Miñano, Joel Schwartz, Adam Plesniak, Russ Jones, David Whelan

Proceedings Volume 7043, 70430E (2008) https://doi.org/10.1117/12.793714

KEYWORDS: Solar concentrators, Wavefronts, Mirrors, Photovoltaics, Reflectivity, Optics manufacturing, Nonimaging optics, Optical design, Tolerancing, Prisms

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Proceedings Article | 2 September 2008 Paper

High-performance Köhler concentrators with uniform irradiance on solar cell

M. Hernández, A. Cvetkovic, P. Benítez, J. Miñano

Proceedings Volume 7059, 705908 (2008) https://doi.org/10.1117/12.794927

KEYWORDS: Solar concentrators, Sun, Solar cells, Integrated optics, Optics manufacturing, Mirrors, Optical components, Nonimaging optics, Molybdenum, Glass molding

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Proceedings Article | 21 September 2007 Paper

The XR nonimaging photovoltaic concentrator

M. Hernández, P. Benítez, J. Miñano, A. Cvetkovic, R. Mohedano, O. Dross, R. Jones, D. Whelan, G. Kinsey, R. Alvarez

Proceedings Volume 6670, 667005 (2007) https://doi.org/10.1117/12.736897

KEYWORDS: Solar concentrators, Mirrors, Nonimaging optics, Prisms, Photovoltaics, Solar cells, Manufacturing, Tolerancing, Optical design, Multijunction solar cells

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Proceedings Article | 11 September 2007 Paper

XR: a high-performance PV concentrator

M. Hernández, P. Benítez, J. C. Miñano, A. Cvetkovic, R. Mohedano, O. Dross, R. Jones, D. Whelan, G. S. Kinsey, R. Alvarez

Proceedings Volume 6649, 664904 (2007) https://doi.org/10.1117/12.736910

KEYWORDS: Solar concentrators, Mirrors, Prisms, Nonimaging optics, Photovoltaics, Solar cells, Manufacturing, Tolerancing, Optical design, Multijunction solar cells

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Proceedings Article | 8 September 2006 Paper

Design and modeling of a measuring device for a TIR-R concentrator

Daniel Pérez Calero, Juan Carlos Miñano, Pablo Benitez, Maikel Hernandez, Aleksandra Cvetkovic

Proceedings Volume 6339, 63390H (2006) https://doi.org/10.1117/12.680496

KEYWORDS: Solar concentrators, Compound parabolic concentrators, Collimators, Solar cells, Ray tracing, Sensors, Collimation, Computer aided design, Calibration, Manufacturing

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Proceedings Article | 19 July 2006 Paper

High-concentration mirror-based Kohler integrating system for tandem solar cells

R. Winston, P. Benitez, A. Cvetkovic

Proceedings Volume 6342, 634213 (2006) https://doi.org/10.1117/12.692270

KEYWORDS: Solar concentrators, Mirrors, Sun, Optical design, Prototyping, Solar cells, System integration, Tandem solar cells, Computer aided design, Imaging systems

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