WEARABLE HEADS-UP DISPLAYS EMPLOYING A CORE WIRE COMMUNICATIVELY COUPLED TO A RADIO AS AN ANTENNA
Systems, devices and methods for eyeglasses frames and eyeglasses frames assemblies for wearable electronic devices, and particularly systems, devices, and methods that employ an antenna in eyeglasses frames and eyeglasses frames assemblies for wearable heads-up displays, the systems, devices and methods including a pair of eyeglasses having a first arm housing a radio and a core wire, wherein the core wire is communicatively coupled to the radio as an antenna by an electrically conductive path including a hinge in the first arm or an electrically conductive path that is electrically isolated from the hinge and a power source coupled to the first arm or a second arm and electrically coupled to the radio via a second electrically conductive path.
1 . An apparatus, comprising:
a front eyeglass frame, including: a first rim, a second rim, and a bridge that physically couples the first rim and the second rim;
a first arm coupled to the first rim and having a first temple portion including an anterior portion and a posterior portion;
a second arm coupled to the second rim;
a radio operable to at least one of receive or transmit wireless signals; and
a core wire housed in the first arm and that extends along at least a portion of the posterior portion of the first temple portion, the core wire repeatedly plastically deformable without breaking to retain at least the posterior portion in a shape, the core wire communicatively coupled to the radio as an antenna.
2 . The apparatus of claim 1 wherein the radio is operable to at least one of receive or transmit wireless signals at a first wavelength, and the core wire has a length that is at least approximately equal to a reciprocal of an integer of the wavelength.
3 . The apparatus of claim 2 wherein the core wire has a length that is at least approximately equal to ¼, ⅓, or ½ of the wavelength.
4 . The apparatus of claim 1 wherein a length of the antenna is between 30 millimeters and 63 millimeters.
5 . The apparatus of claim 1 wherein at least a piece of the posterior portion is metal, and is coupled to a ground.
6 . The apparatus of claim 1 further comprising:
a hinge between the anterior portion and the posterior portion; and
a printed circuit board in electrical communication with the core wire.
7 . The apparatus of claim 6 wherein the core wire is electrically coupled to the hinge and extends from the hinge along at least the portion of the posterior portion of the first temple portion.
8 . The apparatus of claim 7 , further comprising:
an electrically conductive path from the printed circuit board to the core wire passing through at least the portion of the posterior portion, a portion of the hinge, and a portion of the anterior portion of the first temple portion.
9 . The apparatus of claim 8 wherein the electrically conductive path includes: the printed circuit board housed in the anterior portion, the radio carried by the printed circuit board, the hinge, a conduit electrically connecting the hinge and the printed circuit board, and the core wire electrically coupled to the hinge.
10 . The apparatus of claim 9 wherein the conduit is one of a coaxial cable electrically coupled between the printed circuit board and the hinge and a shielded trace carried by at least one layer of the printed circuit board.
11 . The apparatus of claim 6 further comprising:
an electrically conductive path between the printed circuit board and the core wire passing through at least the portion of the posterior portion and a portion of the anterior portion of the first temple portion, wherein the hinge is electrically isolated from the electrically conductive path.
12 . The apparatus of claim 11 wherein the electrically conductive path comprises:
a first contact in the anterior portion proximate the hinge;
a conduit electrically connecting the printed circuit board to the first contact;
a second contact in the posterior portion proximate the hinge, the second contact electrically coupled to the core wire; and
a pin having an unfolded configuration and a folded configuration, wherein in the unfolded configuration, the pin electrically couples the first contact and the second contact and in the folded configuration, the pin isolates the first contact from the second contact.
13 . The apparatus of claim 12 wherein the conduit is one of a coaxial cable and a shielded trace.
14 . The apparatus of claim 12 wherein the pin comprises a first pin portion and a second pin portion, the first pin portion electrically coupled to the core wire and the second pin portion electrically coupled to the first pin portion, the second pin portion removably coupleable with the first contact.
15 . The apparatus of claim 14 further comprising a housing surrounding at least the second pin portion, the housing received by the anterior portion of the first temple portion.
16 . The apparatus of claim 1 wherein the core wire is deformable without breaking to retain at least the posterior portion in a shape.