Ronald G. Driggers

R. Driggers is a Professor at the University of Arizona’s Wyatt College of Optical Sciences and works in the area of electro-optical and infrared imaging systems.   Previously, he was appointed to the Senior Executive Service as the Superintendent of the Optical Sciences Division at the Naval Research Laboratory in 2008.   Before 2008, he was the Director of the Modeling and Simulation Division at the U.S. Army’s Night Vision and Electronic Sensors Directorate (NVESD) and a brief period as the Chief of the Electro-Optics and Photonics Division at the Army Research Laboratory.  Dr. Driggers received a doctorate in electrical engineering from the University of Memphis in 1990, is the author of five books on Infrared and Electro-Optics Systems.  He was Editor-in-Chief of the Encyclopedia of Optical Engineering (Taylor and Francis).  He was selected as the 2002 Army Materiel Command’s Engineer of the Year, 2001 CERDEC Technical Employee of the Year, and 2001 NVESD Technical Employee of the Year.  He is a retired U.S. Naval Reserve Officer and was selected as the 2001 Naval Engineering Duty Officer of the Year (William Kastner Award).  He is also a Fellow of the International Society for Optical Engineering, the Optical Society of America, and the Military Sensing Symposium.  He has been the Editor-in-Chief of SPIE’s flagship journal, Optical Engineering, and the Editor-in-Chief of the Optical Society of America’s journal Applied Optics.


Dr. Gerald Holst

Gerald Holst is an independent consultant for imaging system analysis and testing. He was a technical liaison to NATO, research scientist for DoD, and a member of the Lockheed-Martin senior technical staff. Dr. Holst has chaired the SPIE conference Infrared Imaging Systems: Design, Analy­sis, Modeling and Test­ing since 1989. He is author of over 30 journal articles and 6 books (published by SPIE and/or JCD Publishing). Dr. Holst is a member of OSA and is a SPIE Fellow. Dr. Holst has been collaborating with R. Driggers for over 30 years and has supported the infrared group for 5 years.

Dr. Holst has been working with Ron Driggers for over 30 years and has worked with the IR Group for the past 5 years.


Dr. Orges Furxhi

Dr. Orges Furxhi is a Principal with True Colors Infrared Imaging and an independent consultant. He holds a PhD in electrical engineering from the University of Memphis. Dr. Furxhi is a co-author of the third edition of the Introduction to Infrared and Electro-optical System book, has authored or co-authored close to 50 research publications, and has five issued patents. Dr. Furxhi was a Principal Member of Technical Staff at Imec working with the Camera, Lidar, and Holography groups in the Sense and Actuate Department. Prior to that he was the R&D Manager of the Camera Systems and Computational Imaging team at Imec. Before joining Imec he was a Director of Engineering at St. Johns Optical Systems where he was responsible for camera product development. He has been a postdoc with the Duke Imaging and Spectroscopy Program at Duke University and with the Center for Advanced Sensors and the Center for Large Scale Complex Systems & Integrated Optimization Networks at the University of Memphis. As a postdoc he developed several Infrared, Millimeter wave and Terahertz imaging systems.


Dr. Kyle Renshaw

Dr. Kyle Renshaw is an Asst. Professor in CREOL, the College of Optics & Photonics, at the Univ. of Central Florida where he holds joint appointments in the Department of Physics and Electrical and Computer Engineering. He conducts research in materials, components and technologies for imaging systems including detector, focal plane and lens technologies along with system architectures. He has authored over 20 journal articles, 15 conference papers and 6 issued patents. He is a member of the OSA, SPIE, and IEEE Photonics.



Recent Graduates

Dr. Robert Short

Dr. Steve Butrimas

Dr. Heath Gemar (UCF)

Spectral Dependence of Deep Subwavelength Systems in Midwave Infrared

Graduated 2021
Support: Naval Research Laboratory (Onsite)
Co-Advisors: Renshaw, Driggers, Yetzbacher

Heath Gemar graduated from Missouri State University with a B.S. in Physics and Mathematics and a M.S. in Material Science after completing a thesis on FTIR spectroscopy of hot exoplanets.  He is pursuing research at Naval Research Laboratory investigating the spectral characteristics of nano-apertures in metallic films. Additional projects and interest have included polarization measurements, coherence measurements, lidar implementation, IR systems, IRST, and more.


Charles Revello (MS UA)

MultiDrone/MultiSensor Research/GPS Denied Image-Based PNT

Graduated 2022
Support: Army Research Laboratory (UM/UCF)
Co-Advisors: Driggers and Furxhi



Edgar Quintana (MS UA)

MultiDrone/MultiSensor Research

Graduated 2022
Support: Army Research Lab (UCF)
Advisor: Driggers
Masters (Electrical Engineering)



Robert Grimming (PhD UCF)

UCIR Spectral Sensors (MultiUAS/MultiSensor)

Graduated 2022
Support: Army Research Laboratory
Co-Advisors: Renshaw/Driggers

Robert Grimming is a retired Army Officer and a PhD graduate from CREOL at the University of Central Florida.  He holds a B.S. in Electrical Engineering from the United States Military Academy at West Point and M.S. in Optics from the University of Central Florida.  While in the Army, he served as an EOD Company Commander and a Nuclear and Counter-Proliferations Officer.  Throughout his career, he has taught as part of the faculty at the United States Military Academy, Valencia College in Orlando, FL, and the Laser-Photonics Magnet at Wekiva High School in Apopka, FL. 

Robert Grimming’s current research is in longwave infrared (LWIR) imaging with uncooled microbolometer systems.   He has participated on research projects at CREOL including LWIR applications for autonomous vehicle navigation and machine learning, multiband LWIR image enhancement, and atmospheric measurements with uncooled LWIR camera systems.

Current Students

Derek Burrell (PhD UA)

Speckle Mitigation in HEL Targeting Sensors
Support: Air Force Research Lab (Kirtland Onsite)
Co-Advisors: Driggers/Spencer

Derek Burrell earned his B.S. in electrical engineering from Michigan Tech before graduating from UCF CREOL with an M.S. in optics and photonics. He previously held internships in fiber-optic communications and automotive-lighting simulations and is currently finishing his UA Ph.D. offsite at the Directed Energy Directorate of the Air Force Research Laboratory. In addition to trade studies of electro-optic and infrared systems, his research interests include beam control and imaging through turbulence. Recently, he is been developing techniques for phase compensation and active target tracking, with an emphasis on mitigating laser speckle in applications involving wavefront sensing and coherent imagery.


Jennifer Hewitt (PhD UCF)

NIR/HSI Imaging Systems for Invasive Species Detection
Support: Air Force Research Lab and State of Florida (FFWCC)
Co-Advisors: Renshaw/Driggers



Lindsey Wiley (PhD UA)

Targeting and ISR Performance of Extended SWIR
Support: Epi Sensors
Co-Advisors: Driggers and Brady

Lindsey Wiley earned her B.A. in Physics from Colgate University, where she performed undergraduate research on quantum entanglement as a means to diagnose disease, which first introduced her to the field of Optics. Prior to that, she performed elemental analysis of airborne particulate matter to determine sources of ambient air pollution, connecting her passions for the environment and human health with research. She is currently pursuing her Ph.D. in Optical Sciences at the Wyant College of Optical Sciences in the Infrared Systems group. Her work includes developing a telescope testbed for long range target sensing to assess the range performance of various reflective bands under challenging atmospheric conditions.


Patrick Leslie (PhD UA)

MultiDrone/MultiSensor Research
Support: Army Research Laboratory (ARL)
Co-Advisors: Driggers and Holst


Patrick Leslie began his academic career at D’Youville College in Buffalo, NY where he graduated with a Biology / Pre-med bachelor’s in science.  After graduation, he worked at Corning Incorporated in the Applied Optical Research directorate he studied optics. The focus of his research at Corning was light-matter interactions between CO2, UV nanosecond, and ultrafast lasers and their interaction with glass / glass-ceramics.  Leslie started his Master’s in Optical Sciences at the University of Arizona with the hope to create a deeper understanding of the field of optics and a more encompassing view of its applications.  He currently works in the Infrared Systems group at UA studying the thermal signatures of power lines and the range performance comparison of the infrared bands.


Joshua Follansbee (PhD UA)

High Energy Laser Targeting
: US Army
Advisor: Driggers

Joshua Follansbee earned a BS in Physics and Mathematics from the University of Notre Dame. Here, his research focused on optimization of reconstruction and control loops for the Fresnel Wavefront Sensor. He is currently working towards a PhD at the University of Arizona, where his work focuses on drone detection in the reflective bands, including the eSWIR, as well as drone-mounted sensors and surface reflectivity characterization.


Emily Chau (MS UA)

GPS Denied Image-Based PNT
Support: Army Research Laboratory (ARL)
Advisor: Driggers

Emily Chau graduated from the University of Nevada, Reno with a B.A. in Physics where she briefly worked on the calculation of electron density from experimental diffraction patterns. She is currently working towards a Master’s at the University of Arizona where her work includes software-hardware integration for multi-camera systems on drones.