Electronic devices with frame antennas

A head-mounted device, comprising:

• a frame having left and right halves coupled at a nose bridge portion;
• left and right elongated side members coupled by respective left and right hinges to the left and right halves;
• a left display system coupled to the left half that is configured to produce a left image for a left eye box, wherein the left display system is configured to allow a real-world object to be viewed through the left display system from the left eye box;
• and
• a right display system coupled to the right half that is configured to produce a right image for a right eye box, wherein the right display system is configured to allow the real-world object to be viewed through the right display system from the right eye box;
• and
• dielectric gaps in the frame that form a segment of the frame that serves as an antenna, wherein the frame comprises a metal member that surrounds left and right lenses and wherein the segment comprises a metal segment of the metal member that forms an antenna resonating element for the antenna.

A pair of glasses, comprising:

• clear lenses through which real-world objects are viewable from eye boxes;
• display systems configured to present images in the eye boxes;
• a metal frame that extends around peripheral portions of the clear lenses;
• left and right temples;
• left and right hinges that respectively couple the left and right temples to corresponding left and right edges of the metal frame;
• radio-frequency transceiver circuitry;
• and
• dielectric gaps in the metal frame that form a metal frame segment that serves as an antenna resonating element in an antenna that is coupled to the radio-frequency transceiver circuitry, wherein the dielectric gaps and the metal frame segment are formed along a lower edge of the metal frame below one of the clear lenses.