Abstract: The present invention relates to a method in connection with the manufacturing of a dosing roller, comprising the provision of a roller body (1) with an envelope surface (IA) on which a wire (4) is being wound such that plurality of turns of wire is formed in contact with the envelope surface (IA) and with adjoining turns of wire (4, 4?, 4?) in tight contact with each other, wherein for at least the major part of said adjoining turns of wire (4, 4?, 4?) the surface of the wire (4) which is outwardly exposed is being provided with protrusions (11) and depressions (12).

Abstract: A laser arrangement is provided, in which a Lyot filter arrangement is operative to effect single mode operation. The birefringent element of the Lyot filter arrangement has a cavity folding mirror on one side thereof and a polarizing element on another side thereof, such that the free spectral range of the Lyot filter is improved. Preferably, the Lyot filter arrangement and the laser gain material are located in different branches of the folded cavity.

Abstract: A laser arrangement comprising a first and a second resonant cavity for generating a first and a second fundamental wavelength. A first and a second non-linear region are provided in the second cavity for sum-frequency mixing of the radiation generated in the first cavity and in the second cavity, and for frequency-doubling of the radiation generated in the second cavity, respectively.

Abstract: A method of generating coherent radiation, wherein a first fundamental beam of radiation from a four level laser and a second fundamental beam of radiation from a three level laser are mixed in a non-linear body to obtain an output beam at the sum frequency of the two fundamental beams. The invention also relates to an arrangement for carrying out the method.

Abstract: A method and a device for generating visible coherent radiation is disclosed. The visible coherent radiation is generated by sum-frequency mixing of a first fundamental beam from a diode laser and a second fundamental beam from a diode-pumped solid-state laser. The mixing is performed by means of a quasi-phasematching element provided within the resonant cavity of the solid-state laser. The first fundamental beam is stabilized by providing feedback to the diode laser.

Abstract: A lens arrangement for transforming a divergent, generally astigmatic laser beam from a diode laser into a beam having a high degree of rotational symmetry is disclosed. The arrangement comprises, in series, a first cylindrical gradient index lens arranged with its principal axes parallel to the principal axes of the astigmatic laser beam; a second cylindrical gradient index lens arranged with its principal axes parallel to the principal axes of the astigmatic laser beam; and a third cylindrical gradient index lens arranged with its principal axes rotated 45 degrees with respect to the principal axes of the astigmatic laser beam. The first and the second gradient index lenses have such refractive powers that both the fast and the slow axis of the astigmatic laser beam are converged to a focus inside the third gradient index lens.

Abstract: A method for processing a time domain reflectometry (TDR) signal used to determine at least one process variable for a material in a tank, wherein said TDR signal has been generated by a radar level gauge system comprising a pulse generator, a probe extending into the tank for guiding the pulse, and a receiver for receiving said TDR signal, and wherein the TDR signal comprises at least a surface reflection pulse caused by an interface between different materials in the tank, and an interfering pulse caused by a transition between the pulse generator and the probe.

Abstract: When a running web (3) is coated with a liquid coating mixture, at least one side of the web is provided with a coating (40, 40?) of coating mixture. Existing excess (33) of coating mixture in or adjacent to the regions of the edge portions of the web is removed by being blown off downstreams of where the coating operation is performed.

Abstract: The present invention relates to a feature agent (20), a central control unit in an exchange in a telecommunication network, an exchange and a telephone network all comprising such a feature agent, a computer program product for realizing such a feature agent as well as a method of controlling the process flow between and through a number of features (22, 24, 26) subscribing to a certain event. The feature agent receives, in an event receiver (30), the event, selects, in a selector (32) and from an encountered control point of the process flow, a feature (22) having the highest priority from a list (list 1) comprising features of differing priorities to said event and to the combination of control points including at least the encountered control point and hands over control of the process flow to that feature for continuing the process flow in the selected feature.

Abstract: The present invention relates to a filtering device for preventing passing and blocking of unwanted particles in a suspension, which filtering device comprises an inlet and an outlet and a defined space between the inlet and the outlet, wherein the device comprises a filter means arranged in the outlet, that the filter means is arranged with openings, that the size of the openings permit particles of a size smaller than the openings to pass through, and at least one nozzle connected to a pressurised liquid source, capable of delivering a liquid jet, and arranged adjacent said outlet, wherein the said at least one nozzle is arranged such and directed such that particles that engage said filter means are removed therefrom by the liquid jet.

Abstract: The present invention relates to the field of arrangements in reflector antennas, and in particular to that part of this field that concerns reflector antennas that include subreflectors. The invention is concerned chiefly with an improved subreflector (5b) which when used in a reflector antenna (1) enables the antenna to obtain a radiation diagram with high suppression of side lobes in both the H-plane and the E-plane. The reflective structure of the subreflector (5b) includes at least two mutually different geometries (15, 17) that have been configured specifically to obtain radiation diagrams with good suppression of side lobes in both the E-plane and the H-plane.

Abstract: Coating blade for applying coating material onto a travelling web (41), particularly coating liquid onto a travelling paper web, comprising a steel band (3), which, along the edge section (7) intended to engage the web (41), is provided with a wear-resistant coating (5). Said coating is constituted by a material which has a hardness according to Shore A of from about 30 to about 80.