Lucovsky said "changes in AR leadership and Google's unstable commitment and vision" contributed to his decision.

Lucovsky's departure adds to the numerous challenges Google's AR team has faced in recent months, including a round of layoffs and the resignation of Google's former head of VR, Clay Bavor.

In June, a report from Insider indicated that Google has given up on its plans to build AR glasses, codenamed Project Iris.

It's also discontinued the enterprise edition of Google Glass.