An electronic device can comprise a first electronic module; a second electronic module; and a hermetic electric interconnect to hermetically couple them. The hermetic electric interconnect can comprise a bottom metal layer; a bottom insulating layer, deposited on the bottom metal layer to insulate the bottom metal layer; an interconnect metal layer, deposited on the bottom insulating layer, and deposited to form a bottom sealing ring; and patterned to form electrical connections between contact pads, and to form a middle sealing ring; a patterned top insulating layer, deposited on the interconnect metal layer to insulate the interconnect metal layer; and patterned to form feedthrough holes; and a top metal layer, deposited on the top insulating layer to start forming contacts by filling the feedthrough holes; and patterned to complete forming contacts through the feedthrough holes, to form a separate barrier layer, and to complete forming the top sealing ring.

Described here are devices, systems, and methods for increasing tear production by stimulating the cornea, conjunctiva, and/or subconjunctiva. In some variations, the devices may be in the form of a contact lens. The contact lens may comprise a lens body and a stimulator chip, where the stimulator chip is embedded in the lens body. An external power source wirelessly transmits energy to the stimulator chip, where the stimulator chip may convert the energy to an electric waveform to stimulate the cornea, conjunctiva, and/or subconjunctiva. Stimulation may activate the lacrimal reflex to increase tear production. The devices and systems for increasing tear production may be used in methods of treating dry eye, reducing the symptoms of tired eye, increasing comfort for contact lens wearers, and extending the number of years a contact lens user can wear contacts. Also described are methods of manufacturing a contact lens.

According to examples, a lens configuration for a head-mounted display (HMD) device may include a base platform made from glass or plastic, an antenna layer deposited onto the base platform, an optical polymer film deposited onto the antenna layer, and a lens layer deposited onto the optical polymer film through a 3D printing technique. The antenna layer may include a transparent antenna embedded into or deposited onto a transparent layer. The lens layer may be 3D printed as multiple partial layers to have a shape that matches a prescription for the lens layer.

Lenses and methods for adjusting the focus of a lens include dividing multiple light sensors in a lens into four quadrants. A position of the lens relative to occlusion along a top and bottom edge of the lens is determined based on numbers of bits in respective bit sequences from light sensors in respective regions of the lens. An optimal focal length for the lens is determined based on the position of the lens. The focal length of the lens is adjusted to match the optimal focal length.

Lenses and methods for adjusting the focus of a lens include dividing multiple light sensors in a lens into four quadrants. A position of the lens relative to occlusion along a top and bottom edge of the lens is determined based on lengths of bit sequences from light sensors in each of the four quadrants. An optimal focal length for the lens is determined based on the position of the lens. The focal length of the lens is adjusted to match the optimal focal length.

Methods of forming a lens include forming components on a lower substrate. The components are sealed on the lower substrate with a sealing layer. An upper substrate is formed over the sealing layer. The lower substrate is polished to a lower lens curvature.

An electronic device can comprise a first electronic module; a second electronic module; and a hermetic electric interconnect to hermetically couple them. The hermetic electric interconnect can comprise a bottom metal layer; a bottom insulating layer, deposited on the bottom metal layer to insulate the bottom metal layer; an interconnect metal layer, deposited on the bottom insulating layer, and deposited to form a bottom sealing ring; and patterned to form electrical connections between contact pads, and to form a middle sealing ring; a patterned top insulating layer, deposited on the interconnect metal layer to insulate the interconnect metal layer; and patterned to form feedthrough holes; and a top metal layer, deposited on the top insulating layer to start forming contacts by filling the feedthrough holes; and patterned to complete forming contacts through the feedthrough holes, to form a separate barrier layer, and to complete forming the top sealing ring.

An eye-mountable device is provided that includes a battery or other local power source and that can wirelessly power one or more intraocular devices using power from the battery. The eye-mountable device could be provided as a contact lens. The eye-mountable device could provide power to an intraocular device by emitting radio frequency energy, time-varying electrical fields through the conductive medium of the eye, or optical energy. The intraocular device could include an electronic lens configured to provide a controllable optical power to the eye. The intraocular device could include sensors configured to detect accommodation forces exerted by muscles of the eye; such detected forces could be used to control an electronic lens of the intraocular device or an electronic lens of the eye-mountable device. The battery could be rechargeable and the eye-mountable device could include instrumentation for receiving power to recharge the battery.

Apparatus, systems and methods employing contact lens as power source for powering a retinal implant are provided. In an aspect, a contact lens includes a substrate that forms at least part of a body of the contact lens and a circuit disposed on or within the substrate comprising. The circuit includes a power harvesting component configured to receive energy in a first form from an external power source and convert the energy from the first form to a second form and an energy transfer component configured to transmit the energy in the second form to device remote from the contact lens when the contact lens is worn over an eye.

An electronic device can comprise a first electronic module; a second electronic module; and a hermetic electric interconnect to hermetically couple them. The hermetic electric interconnect can comprise a bottom metal layer; a bottom insulating layer, deposited on the bottom metal layer to insulate the bottom metal layer; an interconnect metal layer, deposited on the bottom insulating layer, and deposited to form a bottom sealing ring; and patterned to form electrical connections between contact pads, and to form a middle sealing ring; a patterned top insulating layer, deposited on the interconnect metal layer to insulate the interconnect metal layer; and patterned to form feedthrough holes; and a top metal layer, deposited on the top insulating layer to start forming contacts by filling the feedthrough holes; and patterned to complete forming contacts through the feedthrough holes, to form a separate barrier layer, and to complete forming the top sealing ring.