Dr. Hakki H. Refai Profile

Dr. Hakki H. Refai

Chief Technology Officer at Optecks LLC

SPIE Involvement:

Conference Program Committee | Author

Area of Expertise:

3D Printing , Spectroscopy , 3D/2D Display Technologies , 3D Machine Vision

Websites:

Company Website

Publications (17)

PROCEEDINGS ARTICLE | March 21, 2016

Miniature transmissive DLP-based infrared spectrometer

Proc. SPIE. 9761, Emerging Digital Micromirror Device Based Systems and Applications VIII

KEYWORDS: Spectroscopy, Sensors, Digital micromirror devices, Mirrors, Diffraction gratings, Signal detection, Signal to noise ratio, Infrared spectroscopy, Digital Light Processing, Signal processing

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PROCEEDINGS ARTICLE | March 10, 2015

Design23DPrint software for 3D DLP printers

Proc. SPIE. 9376, Emerging Digital Micromirror Device Based Systems and Applications VII

KEYWORDS: Printing, 3D printing, Digital Light Processing, Digital micromirror devices, Control systems, Computer aided design, Control systems design, 3D modeling, Software development, Ultraviolet radiation

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PROCEEDINGS ARTICLE | May 17, 2013

CSpace high-resolution volumetric 3D display

Proc. SPIE. 8738, Three-Dimensional Imaging, Visualization, and Display 2013

KEYWORDS: Digital micromirror devices, Digital Light Processing, 3D displays, Image processing, Image resolution, Fluctuations and noise, Imaging systems, Distortion, Optical design, Prototyping

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PROCEEDINGS ARTICLE | May 11, 2011

Multi-layer overlay display

Proc. SPIE. 8042, Display Technologies and Applications for Defense, Security, and Avionics V; and Enhanced and Synthetic Vision 2011

KEYWORDS: 3D displays, Digital micromirror devices, 3D image processing, Infrared lasers, Light, Composites, Crystals, Projection systems, Laser sources, Clouds

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PROCEEDINGS ARTICLE | October 11, 2010

A technique for flicker reduction in a volumetric three-dimensional display with a static image space

Proc. SPIE. 7835, Electro-Optical Remote Sensing, Photonic Technologies, and Applications IV

KEYWORDS: 3D displays, 3D image processing, Projection systems, Digital Light Processing, Image processing, Image quality, Holography, Glasses, 3D volumetric displays

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PROCEEDINGS ARTICLE | February 27, 2010

3D visualization of medical imaging using static volumetric display: CSpace

Proc. SPIE. 7625, Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling

KEYWORDS: 3D displays, Medical imaging, 3D image processing, 3D volumetric displays, Ions, Digital micromirror devices, Aluminium phosphide, Projection systems, Digital Light Processing

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PROCEEDINGS ARTICLE | October 1, 2009

A high-resolution, scalable three-dimensional volumetric display

Proc. SPIE. 7482, Electro-Optical Remote Sensing, Photonic Technologies, and Applications III

KEYWORDS: Digital micromirror devices, 3D displays, Projection systems, Digital Light Processing, Aluminium phosphide, 3D image processing, Ions, 3D volumetric displays, Upconversion

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PROCEEDINGS ARTICLE | October 7, 2008

FSO tracking and auto-alignment transceiver system

Proc. SPIE. 7112, Unmanned/Unattended Sensors and Sensor Networks V

KEYWORDS: Free space optics, Transceivers, Telecommunications, Atmospheric optics, Data communications, Sensors, Signal detection, Optical tracking, Detection and tracking algorithms, Semiconductor lasers

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PROCEEDINGS ARTICLE | February 13, 2008

A tracking system for mobile FSO

Proc. SPIE. 6877, Free-Space Laser Communication Technologies XX

KEYWORDS: Free space optics, Telecommunications, Atmospheric optics, Data acquisition, Video, Diodes, Lenses, Optical tracking, Transceivers, Photodiodes

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SPIE Journal Paper | August 1, 2007

Digital micromirror device for optical scanning applications

Refai, Hakki , Sluss, James , Tull, Monte

OE Vol. 46 Issue 08

KEYWORDS: Digital micromirror devices, Phased array optics, Micromirrors, Free space optics, Beam steering, Optical scanning, Scanners, Digital Light Processing, Prisms, Optical engineering

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PROCEEDINGS ARTICLE | May 10, 2007

Omnidirectional free-space optical (FSO) receivers

Proc. SPIE. 6551, Atmospheric Propagation IV

KEYWORDS: Free space optics, Receivers, Transceivers, Atmospheric optics, Buildings, Laser sources, Video, Optical testing, Transmitters, Modulation

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PROCEEDINGS ARTICLE | February 26, 2007

Tablet PC interaction with digital micromirror device (DMD)

Proc. SPIE. 6507, Multimedia on Mobile Devices 2007

KEYWORDS: Digital micromirror devices, Tablets, Digital Light Processing, Micromirrors, Projection systems, Interfaces, Aluminium phosphide, Mirrors, Display technology, Control systems

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SPIE Journal Paper | February 1, 2006

Comparative study of the performance of analog fiber optic links versus free-space optical links

Refai, Hakki , Sluss, James , Refai, Hazem , Atiquzzaman, Mohammed

OE Vol. 45 Issue 02

KEYWORDS: Free space optics, Fiber optics, Analog electronics, Fiber optics tests, Optical amplifiers, Transmitters, Fiber amplifiers, Signal attenuation, Receivers, Modulation

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PROCEEDINGS ARTICLE | June 3, 2005

The use of free-space optical links for CATV applications

Proc. SPIE. 5825, Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks

KEYWORDS: Free space optics, Optical amplifiers, Analog electronics, Fiber amplifiers, Intermodulation, Receivers, Distortion, Optical fibers, Transmitters, Signal attenuation

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PROCEEDINGS ARTICLE | May 25, 2005

The transmission of multiple RF signals in free-space optics using wavelength division multiplexing

Proc. SPIE. 5793, Atmospheric Propagation II

KEYWORDS: Free space optics, Signal to noise ratio, Wavelength division multiplexing, Signal attenuation, Analog electronics, Optical amplifiers, Fiber amplifiers, Atmospheric optics, Transmitters, Optical testing

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PROCEEDINGS ARTICLE | May 25, 2005

Free-space optical communications performance in the presence of interfering laser signals

Proc. SPIE. 5793, Atmospheric Propagation II

KEYWORDS: Free space optics, Dye lasers, Free space optical communications, Tunable lasers, Modulation, Telescopes, Local area networks, Atmospheric optics, Switches, Receivers

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PROCEEDINGS ARTICLE | April 18, 2005

Transporting RF signals over free-space optical links

Proc. SPIE. 5712, Free-Space Laser Communication Technologies XVII

KEYWORDS: Free space optics, Signal to noise ratio, Optical amplifiers, Analog electronics, Transmitters, Fiber amplifiers, Modulation, Receivers, Signal attenuation, Atmospheric optics

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