Abstract:
A display device is provided in which the electro-optical effect is created through bending of bendable elements, particularly nanowires or nanotubes. Arrays of bendable elements are provided in areas of the display with the light path. This is possible in that the bendable elements are transparent in the case where they are oriented substantially perpendicular to the substrate, but will absorb light if bent at an angle. Hereto, it is of importance that polarized light is used. The bendable elements are preferably separated from the electrodes through a layer of dielectric material, and are bent under the influence of an electric or magnetic field.
Abstract:
An optical diffraction element (1) comprises a diffraction layer (4) which is divided into diffraction strips (6) alternating with intermediate strips (8). The diffraction strips comprise nano-elements (10) which are aligned in one direction and absorb radiation (b) which is linearly polarized in this direction. The diffraction element may be a linear or two-dimensional grating (1) or a Fresnel lens (160). The polarization-sensitive grating can be used in optical systems in which only radiation with a specific polarization direction should be diffracted, or in an optical record carrier to allow reading of an information structure with high spatial frequencies.
Abstract:
A disk drive unit for a removable disk (D), in particular for use in mobile devices, comprises a spindle (1) driven by an electric motor (2) and supporting the disk (D) in its operating position. It further comprises one or two loading mechanisms (4A and 4B) to load mechanical energy into a storage mechanism (5) for storing the loaded energy. A release mechanism (6) is provided to release the stored energy stepwise to the spindle in order to assist during a plurality of start-ups of the disk rotation. The two loading mechanisms (4A and 4B) are adapted to load mechanical energy provided by the user during insertion of the disk and energy released during the deceleration of the rotation of the disk, respectively. The electrical power consumption of the disk drive unit is reduced by the storage of the mechanical energy and its stepwise release.
Abstract:
A device manufacturing method is disclosed. The method includes patterning a beam of radiation with a patterning device, projecting the patterned beam of radiation onto a target portion of a substrate, supplying a chemical reagent to a chamber that holds the patterning device and/or the substrate, and removing water from the chamber with use of the chemical reagent.
Abstract:
A lithographic apparatus contains an optical element, the surface of the optical element being modified to reduce the effects of reflectivity reduction by molecular contamination. The surface includes a self assembled monolayer.
Abstract:
LED light source comprising a string of LED loads (LED1-LED4) supplied by a rectified mains voltage. The number of LED loads carrying current is increased as the momentary amplitude of the rectified mains voltage increases, and is decreased as the momentary amplitude of the rectified mains voltage decreases. The order in which the LED loads start carrying a current and the order in which the LED loads stop carrying a current is reversed for each half period of the mains.
Abstract:
The present invention is related to a method for the production of cell sheets comprising at least two different cell types, said method comprising the steps of providing a continuous cell sheet which is disposed on a substrate comprising shape transition properties and/or alterable surface characteristics; exposing said continuous cell sheet to a releasing agent in a patterned fashion; washing the cell sheet after exposure to the releasing agent in order to remove cells which have been affected by the releasing agent, and repopulating the gaps remaining after the cells which have been affected by the releasing agent have been removed with a second cell type.
Abstract:
It is presented a heat managing device for a light source (100) which combines heat managing by means of a heat sink, heat pipes and forced convection, thereby achieving efficient cooling of high power lighting applications. The heat managing device comprises a heat spreading element (104) having an upper side arranged for thermally connecting to at least one light source (106). The light emitted from the light source is controlled by secondary optics (103). The heat managing device comprises a heat sink which is thermally connected to the heat spreader, and to a first set of heat pipes which is thermally connected to the heat spreader. At least a portion of the heat sink is arranged to encompass the secondary optics. The heat pipes are embedded in the heat sink. Further, a fan for providing forced air convection at the heat sink is comprised in the device. A corresponding lighting device is also presented.
Abstract:
A LED light source comprises a first rectifier (DB1) having input terminals coupled to an AC voltage source and output terminals connected by a first series arrangement comprising N LED loads and further comprises circuitry (I1, I2, I3, CC) for making the LED loads one by one carry a current when the momentary value of the AC voltage increases and one by one stop carrying a current when the momentary value of the AC voltage decreases. The LED light source also comprises a second rectifier (DB2) having input terminals coupled to the AC voltage source via a reactive element and LED1 LED2 LED3 output terminals connected by a second series arrangement comprising M LED loads and further comprises circuitry (I4) for making the LED loads one by one carry a current when the momentary value of the AC voltage present at the input terminals of the second rectifier increases and one by one stop carrying a current when the momentary value of the AC voltage decreases.
Abstract:
There is provided an arrangement for light balancing. The arrangement provides light balancing and robust flux feedback and comprises a light source array, a plurality of light sources arranged as a plurality of strings of individual light emitting diodes, at least one light guide structure, and at least one optical sensor. The arrangement provides feedback relating to the optical contribution for each one of the plurality of strings of individual light emitting diodes and is thereby maintaining the emitted light at a balanced level.