This disclosure concerns an interactive head-mounted eyepiece including an optical assembly through which the user views a surrounding environment and displayed content. The displayed content includes a local advertisement, wherein the location of the eyepiece is determined by an integrated location sensor and wherein the local advertisement has a relevance to the location of the eyepiece. The head mounted eyepiece may also include an audio device and the displayed content may comprise local advertisements and audio.

Local advertising content on an interactive head-mounted eyepiece

Head-worn adaptive display

An eyepiece includes a mechanical frame adapted to secure a lens and an image source facility above the lens. The image source facility includes an LED, a planar illumination facility and a reflective display. The planar illumination facility converts a light beam from the LED received on a side of the planar illumination facility into a top emitting planar light source, uniformly illuminates the reflective display, and is substantially transmissive to allow reflected light to pass through towards a beam splitter. The beam splitter is positioned to receive the image light and to reflect a portion onto a mirrored surface. The mirrored surface is positioned and shaped to reflect the image light into an eye of a user of the eyepiece thereby providing an image within a field of view, the mirrored surface further adapted to be partially transmissive within an area of image reflectance.

Eyepiece with uniformly illuminated reflective display

An apparatus including a plurality of adjacent repeated base units, each base unit formed from an active electrode of first, second and third touch sensor arrays, the first, second and third touch sensor arrays each including a plurality of active electrodes connected to a respective common terminal of the touch sensor array, wherein each base unit includes an active electrode of the second touch sensor array interlaced between an active electrode of the first touch sensor array and an active electrode of the third touch sensor array such that a swipe touch gesture applied to two or more adjacent active electrodes of the apparatus generates signalling at the respective common terminals of the corresponding touch sensor arrays which allows the direction of the swipe touch gesture to be determined.

Apparatus and associated methods

See-through display with an optical assembly including a wedge-shaped illumination system

The invention relates to a lens (10) of variable focal length comprising two transparent windows (24, 38) at least partially facing each other and parallel to one another and delimiting, at least in part, an internal volume (15) containing two non-miscible liquids, with different optical indices. The lens comprises an elastic means (36) capable of deforming in response to a change in pressure of the liquids in order to maintain the parallelism of the two transparent windows.

Lens of variable focal length

The invention concerns an electrowetting optical device comprising a chamber (15) comprising first and second immiscible liquids (16, 18) contacting each other at a liquid-liquid interface (19), the first liquid being an insulating liquid and the second liquid being a conducting liquid; a first electrode (20) in the contact with the second liquid; and a second electrode (202) insulated from the first and second liquids by an insulating layer, wherein the second electrode is formed of a conductive molded polymer material, wherein the curvature of said liquid-liquid interface is controllable by application of a voltage between said first and second electrodes.

Electrowetting device with polymer electrode

We have developed a miniature liquid lens component based on electro-wetting. It is designed to be plugged on a fix
focus camera module lens to provide both optical image stabilization (OIS) and auto-focus (AF) functions without any
mobile mechanical parts. The OIS/AF liquid lens component features a conical shape supporting the liquid interface in
order to maintain a stable optical axis and a multi-electrode design able to induce an average tilt of the liquid interface
when a bias voltage is applied to the different electrodes. The miniature size of the OIS/AF liquid lens component is well
adapted to imaging applications with ¼ inch, 1/3 inch and possibly 1/2.5 inch sensor formats. We will present general
rules for the optical design with an OIS/AF liquid lens. In this context, we will describe a simple calculation, based on
the well known Marechal criterion, to estimate the optical wave front error requirement of an optical component
positioned in the aperture stop plane of an imaging lens design to perform images with a pixel resolution quality. We will
also present the principle of command of a multi-electrode liquid lens in order to perform AF and OIS functions with an
optimal image quality.

http://mavoiescientifique.onisep.fr/wp-content/uploads/2011/03/Optical-design-rules-of-a-camera-module-2010.pdf

Optical design rules of a camera module with a liquid lens and principle of command for AF and OIS functions

The invention concerns an electrowetting device comprising first and second immiscible fluids, the liquids being sealed within a structure comprising a cap portion, a base portion, a gasket formed of a first material positioned between a first contact surface on said cap portion and a second contact surface on said base portion, and a first film formed of a second material between said gasket and one of said first contact surface and said second contact surface.

Frederic Laune

Papers

Lens of variable focal length

Electrowetting device with polymer electrode

Optical design rules of a camera module with a liquid lens and principle of command for AF and OIS functions

Hermetic electrowetting device

Selective area chemical beam epitaxy for butt-coupling integration