Abstract:
An apparatus for managing and monitoring a sensing device encapsulated in a compartment formed within a medium is disclosed. The medium compartment includes a release mechanism (210) suitable for exposing the sensing device (310). The apparatus comprises an active component (510) connected to the encapsulated sensing device, the active component providing a measurement from the sensing device to a sensing measurement device. In one aspect of the invention a second active device (420) connected to an electrode associated with the release mechanism, the second active component (420) selectively providing an electrical signal to the electrode for activating the release mechanism (210) and exposing the encapsulated sensing device (310). In another aspect of the invention, a plurality of the apparatus disclosed may be incorporated into an array that is electrically connected to a select circuit for providing a voltage to selected ones of the first and second active devices for switching the active devices to a conductive state. A release circuit selectively provides a voltage to selected ones of the second active device (420), wherein the voltage is suitable for operating an associated compartment release mechanism and exposing the associated sensing device.
Abstract:
The invention provides a device for the controlled release of a predefined quantity of a substance and a method for controllably releasing a predefined quantity of a substance from a compartment. The device comprises a matrix arrangement of compartments in a substrate, each compartment being closed by at least one release mechanism, at least one first electrode and at least one second electrode being assigned to each compartment, the device comprising a plurality of selection lines and a plurality of signal lines, the number of compartments exceeding the sum of the number of selection lines and the number of signal lines, each first electrode or each second electrode being electrically connected via at least one active component to one of the plurality of selection lines and/or to one of the plurality of signal lines.
Abstract:
A light-emitting diode (1) has a first electrode (3), a second electrode (4) and a light-emitting layer (5). A layer (6) of an ion receptor (CR) is positioned between the first electrode (3) and the light-emitting layer (5). Immobile ions of a second charge are positioned between the second electrode (4) and the first electrode (3). The immobile ions initially had counterions of a first charge. The layer (6) has captured the counterions, thereby forming a concentration of immobilized ions at the first electrode (3). The ion gradient provide for injection of electrons (e) and holes (h) resulting in emission of light (L). A diode (1) is manufactured by exposing a laminate (2) of the above structure to a forward bias making the ion receptor (CR) capture the counterions.
Abstract:
A light-emitting diode (1) has a first electrode (3), a second electrode (4), a light-emitting layer (5) which comprises a matrix, and ions. A layer (6) of a cation receptor (CR) is positioned adjacent to the first electrode (3), has captured cations, and has generated immobilized cations (+). A layer (7) of an anion receptor (AR) is positioned adjacent to the second electrode (4), has captured anions, and has generated immobilized anions (-). The ion gradients provide for quick response in emission of light (L) when the diode (1) is exposed to a forward bias. A diode (1) is manufactured by first forming a laminate (2) of the above structure. The laminate (2) is exposed to a forward bias to make the ions become immobilized at respective sites (Sl, S2) of the respective receptors (CR, AR).
Abstract:
The invention relates to a light source (1) comprising one or more light- emissive elements (4) and photosensitive means (P) for detecting light from one or more of said light-emissive elements and first polarization means (30) with a first polarization direction, wherein said first polarization means is provided on or over said photo-sensitive means. The first polarization means may be interposed substantially between said light- emissive element and said photo-sensitive means. Preferably, the light source further comprises second polarization means (32) with a second polarization direction perpendicular to said first polarization direction. In this arrangement, the light-emissive element (4) is interposed substantially between the first polarization means (30) and the second polarization means (32). Accordingly, the environmental light will not hit the photosensitive means and accurate optical feedback can be accomplished.
Abstract:
The present invention relates to a printer device for printing information as a tactile relief structure on a medium, which on at least one side is coated with a polymerizable composition comprising a stationary phase component, polymerizable monomers and a radiation inducible polymerization initiator. The printer device comprises an addressable irradiation system, arranged to irradiate an addressed area of a polymerizable composition on medium located in said device. A radiation induced polymerization is induced in said addressed area to effect polymerization induced diffusion of polymerizable monomers towards said addressed area. Thus, a tactile relief structure develops in said composition on said medium.
Abstract:
The invention relates to a pixel arrangement (20;30) for an emissive device with at least a first emissive pixel and a second emissive pixel, said first emissive pixel and said second emissive pixel having respectively a first emissive area (21;31) and a second emissive area (22;32) adapted to emit light upon excitation. The first emissive area (21;31) is located in a first plane (I) and said second emissive area (22;32) being located in a second plane (II) such that said first emissive area (21;31) and said second emissive area (22;32) at least partially overlap in a viewing direction (A) normal to at least one of said planes (1,11). The first emissive area (21;31) is adapted to emit light with a first polarization direction (P1) and said second emissive area (22;32) is adapted to emit light with a second polarization direction (P2) oriented substantially perpendicular to said first polarization direction (P1). The invention further relates to a display panel and a light source comprising a plurality of such pixel arrangements (20;30).
Abstract:
The present invention relates to an information medium comprising a first information layer (L1) and a second information layer (L2), said first and second information layers (L1, L2) comprising marks intended to store binary data, each mark being intended to be read by a light spot polarized according to a first direction (d1) or to a second direction (d2), wherein: the first information layer (L1) comprises first marks (101) sensitive to the first polarization direction, and second marks (102) not sensitive to said first polarization direction, said first and second marks being both not sensitive or equally sensitive to the second polarization direction, the second information layer (L2) comprising third marks (103) sensitive to the second polarization direction, and fourth marks (104) not sensitive to said second polarization direction, said third and fourth marks being both not sensitive or equally sensitive to the first polarization direction.
Abstract:
In the described method of producing a plurality of bodies bearing equal imprints of a stamp as optical structures, a stamp (13) is initially produced, by attaching particles (14) to a surface (15) of an auxiliary body (16); then, the stamp (13) is used to produce an imprint (11) on a plurality of bodies (10). Optical structures can be irradiated, producing on a screen a speckle pattern indicative of a key. It is substantially impossible to clone a given optical structure with current technological means. Optical structures represent physical One-Way Functions, easy to compute in the forward sense but unfeasible to reverse. Thus, they can be used to build an access/copy protection system of user information contained in an information carrier associated with the body 10. The reproducibility of the optical structures makes this method suitable for optical disks.
Abstract:
The present invention relates to a controller (30) for controlling the light- output of two light-emitting devices (10, 20). The two light-emitting devices are adapted to provide a McCandless effect on an illuminated object (40). The controller (30) comprises a first user interface for a user to set a first color (11) to be output by a first light-emitting device (10) and second user interface for a user to set a desired mixed color (81) of a common area (80) being illuminated by both light-emitting devices (10, 20). The controller (30) further comprises a processing circuitry for determining first lighting parameters resulting in said first color (11) when provided to the first light-emitting device (10), and for determining second lighting parameters resulting in a second color (21) when provided to a second light-emitting device (20). A mix of the first color (11) and the second color (21) provides the mixed color (81). The first color (11) and the mixed color (81) are represented in a color space chromaticity diagram such that they define a line and the second color (21) is determined such that it is located on said line in the color space chromaticity diagram on an opposite side of the desired mixed color (81) relative to the first color (11). Further, the second color (21) is determined by the processing circuitry such that the desired mixed color (81) is achieved when the first (11) and the second (21) colors are mixed.