Downtown augmented reality developer and headset manufacturer Daqri announced on Tuesday that its founder and chief executive, Brian Mullins, had resigned.

Mullins has been replaced as chief executive by Roy Ashok, previously the firm’s chief product officer and the director of product development for the augmented reality business unit of Qualcomm of San Diego.

Daqri designs and manufactures industrial hardhats with retractable augmented reality lenses that allow workers to view 3-D images overlaid onto equipment to help them with repair and assessments. The company also develops augmented reality software.

Mullins will remain as an advisor to the company and will continue to sit on its board of directors. Ashok was promoted to lead Daqri for his experience selling and delivering products to customers, Greg Casserly, Daqri board chairman, in a statement.

Daqri has raised more than $275 million since it was founded by Mullins in 2010.

“We’re now entering phase two of the company’s growth, which will be characterized by product shipments at scale, a growing customer base, and all the opportunities and associated operational complexities that brings,” Casserly said. “Ashok’s track record gives us confidence he is the right leader for this new phase.”

Technology reporter Garrett Reim can be reached at [email protected]. Follow him on Twitter @garrettreim for the latest in L.A. tech news.