Management Team

With decades of experience in optics, metrology, laser interferometers, design, software, and manufacturing, the 4D team's world class staff of experts continues to support our customers as a Nanometrics business unit. If you're interested in joining our team, visit our careers page to view our current job openings.

James Millerd, PhD, President of 4D technology

James Millerd, Ph.D.

Nanometrics Vice President

Dr. Millerd brings extensive expertise in optical metrology and leadership to the role of Vice President of the 4D Technology Business Unit. He has been a central figure in the development and commercialization of vibration-insensitive interferometry, the core technology of 4D's product line, and he was co-founder of both 4D Vision Technology, Inc. and 4D Technology Corporation. Prior to 4D, Dr. Millerd held leadership and engineering positions with MetroLaser, Inc. and TRW’s Space and Technology Group. Dr. Millerd’s work in optical measurement has led to over 70 publications, 15 patents and several product awards. He received his BS in Physics and Electrical Engineering from California State University, Chico in 1987. He received MS (1989) and Ph.D. (1992) degrees from the University of Southern California in the Electrical Engineering Department. He serves on the California State University Physics Advisory Board, the Board of Directors for the National Motorcycle Institute and is a member of Vistage.

Stephen J. Martinek, 4D Technology Director of Worldwide Sales

Stephen J. Martinek

Director of Sales and Marketing

Steve Martinek brings to 4D Technology over thirty years experience in optical engineering, surface metrology, product development and marketing. He joins the company following 15 years with WYKO Corporation (now a subsidiary of Bruker, Inc.) where his responsibilities included product management for various interferometer systems, applications and product development, manager of technical and customer service, and sales and marketing.During his seven-year tenure as VP of International Sales, Steve managed a network of 16 distributors representing WYKO in 25 countries in Europe and Asia. Prior to WYKO, he was employed by the TRW Space and Technology Group were his experience included analysis and testing of satellite based optical systems and by Pacific Sierra Research performing system analysis, test planning and ground tests of defense optical systems. Steve received degrees in Physics (BS – 1973, MS-1975) from the University of Illinois and an MS (1980) in Optics from the Optical Sciences Center at the University of Arizona.

Michael North-Morris, Director of Product Development, 4D Technology

Michael North Morris, Ph.D.

Director of Product Development

Dr. North Morris brings over twenty-two years of experience in optical engineering and interferometer design to the 4D engineering team. His technical innovations have garnered numerous patents and publications, while his 4D product programs have earned two R&D 100 awards for technical excellence and NASA's Exceptional Achievement Award. Prior to 4D Michael was a senior optical engineer for Agilent Technologies where he designed fiber optic test and measurement equipment.

Dr. North-Morris earned his Masters (1998) and PhD (2000) in Optical Engineering from the University of Arizona.


Erik Novak, Director of Business Development 4D Technology

Erik Novak, Ph.D.

Sr. Director of Business Development

Dr. Novak received his Ph.D. in Optical Sciences from the University of Arizona in 1998 under Dr. James Wyant. Erik began his career at Wyko in 1994, and stayed as it transitioned to Veeco Metrology then Bruker Nano Surfaces, where he eventually lead the engineering, applications, and research and development teams. Erik Novak joined 4D Technology in 2013, developing ways to apply environmentally insensitive measurement technology to in-line, industrial applications. Dr. Novak He has been developing precision metrology instrumentation for more than 19 years in applications including displays, optical components, plastic films, aerospace, automotive components, MEMS, telecommunications, photovoltaics, and medical devices. He has developed systems and techniques for interferometry, confocal microscopy, stylus systems, spectrometry, Raman imaging and more. Dr. Novak has received five R&D 100 awards, holds over a dozen patents, and has more than sixty publications and book chapters related to surface measurement and industrial process control.

Neal Brock, 4D Technology Fellow

Neal Brock


Neal Brock co-founded both 4D Vision Technology in 2000 and 4D Technology in 2002. He is an accomplished photonics scientist, author, inventor, and entrepreneur. Previously he held leadership and research and development roles with NASA-Ames Research Center, Aerometrics Inc., and Metrolaser Inc. He is also a veteran of the United States Marine Corps and is a retired United States Navy Reserve officer. He has published over 50 research papers and one book chapter covering subjects such as flow visualization, high-speed and dynamic interferometry, resonant holographic interferometry, 3D profilometry, and polarimetry. He has several patents awarded and pending. He is one of the inventors of 4D Technology’s core micropolarizer technology.


Eric Frey, Director of Engineering, 4D Technology

Eric Frey

Director of Engineering

Eric Frey has been working in the optics industry for over 25 years, serving as mechanical and opto-mechanical engineer, engineering department manager and product manager. He has worked on the design and manufacture of a wide range of metrology products including multiple types of interferometers, autocollimators, laser triangulation devices and scanning probe microscopes.

Mr. Frey has also designed systems that mechanically adjust static attitude of disk drive suspension arms. He received his Bachelor of Science in Mechanical Engineering from the University of Arizona in 1985.


Chris Lesadd, Director of Manufacturing, 4D Technology

Chris Lesadd

Director of Operations

Chris Lesadd brings over 20 years of experience and a passion for lean manufacturing to 4D’s production team. An expert in designing and implementing Kaizen, Toyota Production System, and Six Sigma techniques, Chris has successfully transformed many traditional manufacturing units into highly effective, lean organizations. He has used his knowledge of cost reduction, defect prevention and design transfer to improve 4D’s production capability and to strengthen its supply chain. Chris is also responsible for creating effective Quality Systems that enable business processes and meet ISO regulations. He received his Bachelors of Science in Mechanical Engineering from Harrow Technical College, London, England in 1984.


Al Davis, Accounting Manager, 4D Technology

Al Davis

Accounting Manager

Al Davis joined 4D in 2014, bringing with him a wide-ranging background in all phases of general accounting principles and practices, cost accounting, data management, and management. Al has succeeded in functions from inventory tracking to budgeting and forecasting, with a particular passion for procedure development.