US Patent 10018837 Head worn computer display systems

Head-worn computers may include an optical chassis mechanically configured to provide a stable optical mounting reference plane and a plurality of image source reference planes, a first image source mounted on a first of the plurality of image source reference planes and configured to project first image light through a first hole in the stable optical mounting reference plane, a second image source mounted on a second of the plurality of image source reference planes and configured to project second image light through a second hole in the stable optical mounting reference plane, and an outer frame configured to hold the optical chassis such that, when worn by a user, the first and second image light is aligned with the eyes of the user.