Mr. Nelson Cardenas Profile

Nelson Cardenas

Metrology Engineer at Meta

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Publications (11)

Proceedings Article | 20 May 2022 Presentation + Paper

High resolution, non-contact surface metrology for freeform optics in digital immersive displays

Alex Sohn, Nelson Cardenas, Neil Naples, Xavier Colonna de Lega, Jan Liesener, Thomas Dresel, Peter de Groot

Proceedings Volume 12137, 121370J (2022) https://doi.org/10.1117/12.2624964

KEYWORDS: Metrology, Interferometry, Sensors, Freeform optics, Calibration, Optical spheres, Optical alignment, Surface finishing, Confocal microscopy, Colorimetry, Stitching interferometry

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Proceedings Article | 21 May 2018 Paper

Viewing optics for immersive near-eye displays: pupil swim/size and weight/stray light

Ying Geng, Jacques Gollier, Brian Wheelwright, Fenglin Peng, Yusufu Sulai, Brant Lewis, Ning Chan, Wai Sze Lam, Alexander Fix, Douglas Lanman, Yijing Fu, Alexander Sohn, Brett Bryars, Nelson Cardenas, Youngshik Yoon, Scott McEldowney

Proceedings Volume 10676, 1067606 (2018) https://doi.org/10.1117/12.2307671

KEYWORDS: Distortion, Eye, Fresnel lenses, Stray light, Wavefront sensors, Modulation transfer functions, Cameras, Lenses, Diffraction, Virtual reality, Polarization

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Proceedings Article | 17 April 2015 Paper

Quantification of microscopic surface features of single point diamond turned optics with subsequent chemical polishing

Nelson Cardenas, Matthew Kyrish, Daniel Taylor, Margaret Fraelich, Oscar Lechuga, Richard Claytor, Nelson Claytor

Proceedings Volume 9374, 93741I (2015) https://doi.org/10.1117/12.2080228

KEYWORDS: Polishing, Single point diamond turning, Surface finishing, Diamond, Spatial frequencies, Mirrors, Aluminum, Etching, Diamond machining, Diamond turning

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Proceedings Article | 8 March 2013 Paper

Quantitative phase microscopy of cellular fluctuations modulated by optogenetic stimulation

Bishorup Banjara, Nelson Cardenas, Samarendra Mohanty

Proceedings Volume 8586, 85860Y (2013) https://doi.org/10.1117/12.2020308

KEYWORDS: Optogenetics, Microscopy, Phase measurement, Modulation, Temporal resolution, Digital holography, Beam splitters, Phase imaging, Spatial resolution, Mirrors

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Proceedings Article | 14 February 2012 Paper

Tunable near-infrared dispersive quantitative phase microscopy

Nelson Cardenas, Samarendra Mohanty

Proceedings Volume 8231, 823105 (2012) https://doi.org/10.1117/12.909684

KEYWORDS: Refractive index, Microscopy, Phase imaging, Beam splitters, Particles, Phase measurement, Spatial filters, Interferometry, Imaging systems, Microscopes

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Proceedings Article | 14 February 2012 Paper

Investigation of shape memory of red blood cells using optical tweezers and quantitative phase microscopy

Nelson Cardenas, Samarendra Mohanty

Proceedings Volume 8225, 82252B (2012) https://doi.org/10.1117/12.909758

KEYWORDS: Optical tweezers, Microscopy, Blood, Radiation effects, Beam splitters, Optical manipulation, Microscopes, 3D image reconstruction, Digital holography, Holograms

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Proceedings Article | 2 March 2011 Paper

Development of a digital holographic microscopy system integrated with atomic force microscope

Nelson Cardenas, Ninad Ingle, Lingfeng Yu, Samarendra Mohanty

Proceedings Volume 7904, 790409 (2011) https://doi.org/10.1117/12.875998

KEYWORDS: Atomic force microscopy, Digital holography, Particles, Luminescence, Holography, System integration, Refractive index, Microscopy, Microscopes, Polymers

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Proceedings Article | 28 February 2011 Paper

Stretching of red blood cells by optical tweezers quantified by digital holographic microscopy

Nelson Cardenas, Lingfeng Yu, Samarendra Mohanty

Proceedings Volume 7897, 78971J (2011) https://doi.org/10.1117/12.875981

KEYWORDS: Digital holography, Optical tweezers, Holography, Refractive index, Microscopy, Blood, Objectives, Microscopes, Beam expanders, Holograms

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Proceedings Article | 17 February 2011 Paper

Hybrid optical transport trap: loading and unloading of microscale objects using a microfabricated optical fiber into optical tweezers

Nelson Cardenas, Yogeshwar Mishra, Samarendra Mohanty

Proceedings Volume 7950, 795008 (2011) https://doi.org/10.1117/12.875954

KEYWORDS: Optical tweezers, Axicons, Particles, Digital holography, Holography, Scattering, Optical fibers, Microfluidics, Laser scattering, Hybrid optics

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Proceedings Article | 11 February 2011 Paper

Digital holographic microscopy combined with optical tweezers

Nelson Cardenas, Lingfeng Yu, Samarendra Mohanty

Proceedings Volume 7902, 79020U (2011) https://doi.org/10.1117/12.875992

KEYWORDS: Digital holography, Optical tweezers, Holography, Microscopy, Particles, Holograms, Optical microscopy, Microscopes, Objectives, Visualization

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Proceedings Article | 11 February 2011 Paper

Probing orientation and rotation of red blood cells in optical tweezers by digital holographic microscopy

Nelson Cardenas, Lingfeng Yu, Samarendra Mohanty

Proceedings Volume 7906, 790613 (2011) https://doi.org/10.1117/12.876001

KEYWORDS: Optical tweezers, Digital holography, Holography, Microscopy, Refractive index, Blood, Tomography, Phase imaging, Objectives, Holograms

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Showing 5 of 11 publications

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