Leadership Team

Tim Lester

Chief Executive Officer

Tim Lester joined Bridgelux in 2010 and currently serves as Chief Executive Officer. Prior to that, he served as Chief Financial Officer and Chief Operating Officer. His guidance and expertise as an industry veteran has helped Bridgelux achieve its position as best in industry for product performance, quality and service levels.

Mr. Lester brings more than 25 years of financial and operational experience to Bridgelux, including leadership positions with several semiconductor and LED industry players such as ASIC design house eSilicon, LED manufacturer Lumileds Lighting and Philips Electronics (NYSE: PHG,AEX:PHIA).

Mr. Lester received his master of management degree from the Kellogg Graduate School of Management at Northwestern University and his undergraduate in accounting from Marquette University. He is a CPA.

Fun fact: Although he's all about color, Mr. Lester's favorite sports team is the Chicago White Sox, whose colors are black and white.

Dr. Frank Hu

Senior Vice President, Global Quality

Frank Hu joined Bridgelux in 2007 and serves as Senior Vice President of Global Quality. Dr. Hu’s key area of focus and scope includes all aspects of quality and reliability for package and chip technology, as well as the chip product roadmap.

Prior to his current position, Dr. Hu was General Manager of Die Business at Bridgelux from January 2014 to January 2015, and served as Vice President of Manufacturing from May 2011 to January 2014. Dr. Hu was brought to Bridgelux as Director of Fab operations when he joined the company in 2007.

Before joining Bridgelux, Dr. Hu held various technical and management positions in R&D, engineering and operations at a number of technology companies in Silicon Valley, including Lightwave Microsystems, Candescent Technologies, Agilent Technologies (NYSE: A), Avago Technologies (NASDAQ: AVGO) and Novalux Inc.

Dr. Hu received his bachelor’s degree in Chemistry from Lanzhou University, a master’s degree from Chinese Academy of Sciences and a Ph.D from the University of Alabama. After obtaining his PH.D., Dr. Hu spent two years as a postdoctoral research fellow at California Institute of Technology on optoelectronics material and devices research and development.

Fun facts: Dr. Hu likes to watch college football and practice yoga!

Jason Posselt

Vice President of Global Marketing

Jason Posselt is the Vice President of Global Marketing at Bridgelux. Mr. Posselt rejoined Bridgelux in 2019 after previously working for the company from 2008 to 2013 where he was instrumental in the initial marketing and launch of the company’s first LED array products. He is currently responsible for leading the global marketing team at Bridgelux, including product management, corporate positioning and business development in partnership with the global sales teams.

Mr. Posselt has more than 23 years of product development and marketing experience in solid state lighting. He began his career in the product development group of Hewlett Packard, focused on developing the first high power LED, later branded as Luxeon. Over his career, he has held multiple commercial roles in solid state lighting including the areas of product marketing, market development, and business and marketing management.

Mr. Posselt received his undergraduate degree in mechanical engineering from the University of Southern California and a master’s degree in mechanical engineering from University of California, Berkeley.

Fun fact: Mr. Posselt’s favorite baseball and football teams are the San Francisco Giants and the USC Trojans.

Dr. Brian Cumpston

Vice President, Solutions Development

Brian Cumpston joined Bridgelux in 2014 and serves as Vice President of Solutions Development. Dr. Cumpston is responsible for innovation and focuses on delivering high quality light that is robust, connected and designed for the future.

His responsibilities at Bridgelux have included the development of high-performance substrates and processes for new lighting products, and the rapid progression of projects from the R&D phase to high volume manufacturing.

Dr. Cumpston has 20 years of experience developing innovative products for the display, photovoltaic, and LED lighting industries. Prior to Bridgelux, he held engineering and technology development positions at both private and start-up companies with responsibilities ranging from product and process development to pilot manufacturing oversight and hardware prototyping.

Dr. Cumpston holds a B.S. in Chemical Engineering from University of Arizona and a Ph.D. in Chemical Engineering from the Massachusetts Institute of Technology. He also completed two years of post-doctoral study at the California Institute of Technology.

Fun fact: Dr. Cumpston's favorite color is 520nm!

Dr. Jesus Del Castillo

General Counsel

Jesus Del Castillo joined Bridgelux in 2011 and serves as General Counsel. Dr. Del Castillo was appointed General Counsel in September 2016, and prior to that appointment, held various roles in the company's legal department, including Chief Intellectual Property Counsel.

Before joining Bridgelux, he worked as an attorney at a major international law firm, and as an in-house counsel for Seagate Technology LLC. He began his career as an engineer working in major technology companies including Seagate and IBM.

Dr. Del Castillo earned bachelor degrees in Physics and Mathematics from the University of California at Berkeley, a Ph.D. in Physics from the University of California at Davis focusing on solid state physics, and a Juris Doctor degree from Santa Clara University School of Law. He is admitted to practice law in California.

Fun fact: Dr. Del Castillo's favorite activity is running!

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