US Patent 7641335 Stable titanium spectacle frames for telemicroscopes and surgical telescopes

The entire front portion of eyeglass frames for medical, surgical or dental applications are constructed from a solid piece of machined metal, preferably titanium. This results in no welding of the nose bridge, resulting in a one-piece frame that is substantially more stable than existing designs. In a preferred embodiment, the basic shape is cast or stamped from plate stock from titanium, then machined down, if necessary, to a desired finished product. Holes are provided on the bridge portion for the mounting of medical, surgical or dental optics or other accessories.