Abstract: Transactional database replication techniques are disclosed that do not require altering of the database management system implementation. A replicator module includes a dynamic membership manager, which is configured to manage the persistent membership of a coordination group. The persistent membership can be, for example, a durable set of sites that can replicate changes amongst themselves. Changes from sites not in the persistent membership are discarded. The set of recovered members is a subset of the persistent membership. The persistent membership changes incrementally by either removing or adding members. Failed members may still be part of the persistent membership. The dynamic membership manager module manages the modification of the persistent membership, initialization of replicas, and propagation of membership information.

Abstract: The invention relates to a method for producing a spectacle lens that provides both ophthalmic vision and an additional type of vision, said method comprising two consecutive steps consisting of calculating a rear surface (FP) and a front surface (FA) of the lens. The additional vision type corresponds to the perception of a light (VS) that is conveyed between the front and rear surfaces by an insert (2) built into the lens. The rear surface of the glass is initially calculated to provide a correction of the additional vision type, and the front surface is calculated to correct the ophthalmic vision. The two surfaces of the glass therefore have complex shapes, which simultaneously reduce the optical aberration levels for both types of vision.

Abstract: The invention relates to ophthalmic spectacles for characterizing a convergence of the eyes of a wearer. Each lens of the spectacles is provided with output sections for guiding a radiation towards the side areas of an eye of the carrier, in which the right and left portions of the corneal margin of said eye are in motion. The lens further comprises input sections for collecting the portions of said radiation reflected in said side areas of the eye. A computing unit is also combined with the spectacles in order to determine the convergence of the eyes of the wearer from detection signals measuring the portions of the radiation that are simultaneously collected by the input sections of the two lenses.

Abstract: The invention relates to ophthalmic spectacles for characterizing the direction of gaze of a wearer. Each lens of the spectacles is provided with output sections for directing a radiation towards the ocular areas of the wearer, in which different portions of an ocular limbus of the wearer are in motion. The lens is further provided with input sections for collecting the portions of said radiation reflected in said ocular areas. A computing unit is also combined with the spectacles in order to determine the direction of gaze of the wearer from detection signals measuring the portions of the radiation that are simultaneously collected by the input sections of the two lenses.

Abstract: A linear fluidic actuator comprising an upper actuation deformable surface suitable to induce a displacement in an actuation direction L and a wall delimiting an internal cavity wherein the shape of the actuator is a pillar; the wall, the cavity and the upper surface of a base form the lower part of said pillar, where h1 is the highest dimension of the internal cavity at rest according to the actuation direction L; a part forms the upper part of said pillar where the upper surface of said upper part is the upper actuation deformable surface, the bottom surface of said upper part closes the upper part of the cavity so as to form an upper surface of said cavity and where h2 is the distance at rest from the top of the upper surface of the internal cavity to the upper actuation deformable surface; the height ratio h1/h2 is comprised between 0.2 and 10; a fluidic inlet is provided and suitable for introducing a fluid in the internal cavity.

Abstract: Method of manufacturing an optical device, and an optical device, the optical device having one or more layers (13) of quantum-dots located in-between barrier layers (12). A spacer layer (15) is grown on a barrier layer (12), such that the spacer layer (15) is adapted for substantially blocking strain fields induced by quantum-dot layers, thereby producing a smooth growth front for a subsequent barrier layer (12).

Abstract: The present invention relates to a display system for stereoscopic viewing, the system comprising a binocular viewing device, information content, and a display source. The display system is remarkable in that it further comprises electronic components for implementing pieces of software for optimizing the binocular viewing device, the information content, and the display source, said pieces of optimization software together forming a loop for managing various parameters. The wearer of said device can thus view the information content via the binocular viewing device under conditions that are best adapted to the wearer's physiology.

Abstract: The invention provides an eyesight correcting lens having a front face and a rear face, and into which light beams emitted by a light beam generator system are introduced via an inlet surface and directed towards the eye of an ametropic wearer of said lens to enable information content to be viewed, an optical insert being included in the lens, said lens being arranged so as to enable the wearer of said lens to provide an accommodation effort that is less than or equal to 2D when viewing the information content.

Abstract: The invention relates to an ophthalmological display comprising an optical imager (10) for shaping light beams emitted by a miniature screen (20) of a light beam generator system and for directing the beams towards the eye (O) of the wearer to enable an image (I) to be viewed, said imager presenting an outlet optical axis (A). According to the invention, the display includes a device for adjusting to the user's pupil spacing, the device including means for adjusting the position of said image (I1, I2) in a plane substantially perpendicular to said optical axis (A).

Abstract: Transactional database replication techniques are disclosed. The techniques can be realized in many ways, such as in a replicator module that can be instantiated at each site in a distributed system. The techniques support a variety of data storage technologies such as traditional durable transactional databases as well as in-memory data storage systems, and a variety of data types such as relational, flat file, XML, and object-oriented data. Guaranteed levels of distributed transactional data consistency for both reads and writes are enabled for database applications. The techniques also support the ability of applications distributed across a network to perform updates concurrently, and the ability to replicate many standard database systems without needing to modify their intrinsic behavior or needing them to be aware of the replicator, and the ability to tolerate network and process failures without any change to the data consistency guarantees provided to the applications.

Abstract: The invention relates to an ophthalmic display comprising: a generator system for generating light beams; an optical imager for shaping light beams emitted by a miniature screen of said light beam generator system, which beams are introduced into said imager via an inlet face, and for directing said beams towards the eye of a wearer in order to enable an image to be viewed; an adapter in a reference position relative to said imager; and a connection arrangement carried by said light beam generator system for connection to said adapter, the connection between said system and said adapter being releasable. According to the invention, said adapter is constituted by at least two magnets for co-operating by the magnetic effect and by interengagement with at least two magnets carried by said connection arrangement.

Abstract: Transactional database replication techniques are disclosed that do not require altering of the database management system implementation. A replicator module includes a dynamic membership manager, which is configured to manage the persistent membership of a coordination group. The persistent membership can be, for example, a durable set of sites that can replicate changes amongst themselves. Changes from sites not in the persistent membership are discarded. The set of recovered members is a subset of the persistent membership. The persistent membership changes incrementally by either removing or adding members. Failed members may still be part of the persistent membership. The dynamic membership manager module manages the modification of the persistent membership, initialization of replicas, and propagation of membership information.

Abstract: Transactional database replication techniques are disclosed that do not require altering of the database management system implementation. A replicator module includes a dynamic membership manager, which is configured to manage the persistent membership of a coordination group. The persistent membership can be, for example, a durable set of sites that can replicate changes amongst themselves. Changes from sites not in the persistent membership are discarded. The set of recovered members is a subset of the persistent membership. The persistent membership changes incrementally by either removing or adding members. Failed members may still be part of the persistent membership. The dynamic membership manager module manages the modification of the persistent membership, initialization of replicas, and propagation of membership information.

Abstract: The invention relates to an ophthalmic display comprising an optical imager both for shaping light beams emitted by a miniature screen of a light-beam generator system for generating light beams that are introduced into said imager via an inlet face, and for directing them towards the eye of the wearer so as to make it possible to view an image, an adapter being in a reference position relative to the imager, and said light-beam generator system including a connection arrangement for connection to said adapter, the connection between said system and said adapter being releasable. In the invention, said adapter is constituted by two snap-fastener hooks for housing in housings carried by said connection arrangement.

Abstract: The invention relates to an ophthalmic display comprising: a generator system for generating light beams; an optical imager for shaping light beams emitted by a miniature screen of said light beam generator system, which beams are introduced into said imager via an inlet face, and for directing said beams towards the eye of a wearer in order to enable an image to be viewed; an adapter in a reference position relative to said imager; and a connection arrangement carried by said light beam generator system for connection to said adapter, the connection between said system and said adapter being releasable. According to the invention, said adapter is constituted by at least two magnets for co-operating by the magnetic effect and by interengagement with at least two magnets carried by said connection arrangement.

Abstract: The invention provides an eyesight correcting lens having a front face and a rear face, and into which light beams emitted by a light beam generator system are introduced via an inlet surface and directed towards the eye of an ametropic wearer of said lens to enable information content to be viewed, an optical insert being included in the lens, said lens being arranged so as to enable the wearer of said lens to provide an accommodation effort that is less than or equal to 2D when viewing the information content.

Abstract: Method of manufacturing an optical device, and an optical device, the optical device having one or more layers (13) of quantum-dots located in-between barrier layers (12). A spacer layer (15) is grown on a barrier layer (12), such that the spacer layer (15) is adapted for substantially blocking strain fields induced by quantum-dot layers, thereby producing a smooth growth front for a subsequent barrier layer (12).

Abstract: The invention relates to an ophthalmological display comprising an optical imager (10) for shaping light beams emitted by an optical element of a light beam generator system (20) and directing them towards the eye (O) of the wearer as to enable information content (I) to be viewed, said display being fitted with a device for adjusting focusing by adjusting the length of said light beams between said element and the imager. According to the invention, the generator system comprises a stationary part (21) referred to as a stationary plate, to which said optical element is connected by a moving connection (22) that is adjustable by an actuator device.

Abstract: The invention relates to an ophthalmological display comprising an optical imager (10) for shaping light beams emitted by an optical element of a light beam generator system (20) and directing them towards the eye (O) of the wearer as to enable information content (I) to be viewed, said display being fitted with a device for adjusting focusing by adjusting the length of said light beams between said element and the imager. According to the invention, the generator system comprises a stationary part (21) referred to as a stationary plate, to which said optical element is connected by a moving connection (22) that is adjustable by an actuator device.

Abstract: The invention relates to an ophthalmological display comprising an optical imager (10) for shaping light beams emitted by a miniature screen (20) of a light beam generator system and for directing the beams towards the eye (O) of the wearer to enable an image (I) to be viewed, said imager presenting an outlet optical axis (A). According to the invention, the display includes a device for adjusting to the user's pupil spacing, the device including means for adjusting the position of said image (I1, I2) in a plane substantially perpendicular to said optical axis (A).