US Patent 7585071 Tan thru glasses

A pair of glasses includes a first lens and a second lens. A frame section is adapted to secure the first lens and the second lens. A first bow and a second bow are attached to the frame section. At least one of the first bow and the second bow defines at least one critical section and the at least one critical section has a thickness that is different from the remaining thicknesses of the bows. The at least one critical section is at least partially translucent to a spectrum of electromagnetic radiation.