LEISTER PROCESS TECHNOLOGIES Patent applications |
Patent application number | Title | Published |
20130070797 | LASER UNIT WITH SUPPRESSED FEEDBACK - Laser unit, preferably for gas detection, with a semiconductor laser chip comprising an output mirror with an exit zone for a laser beam and an optical element that reduces self-mixing which is arranged at the exit zone, wherein optical element and laser chip are connected with each other with direct physical contact over an entire surface, at least in the exit zone. Said optical element is connected to the laser chip positively or by means of an optical medium. Thereby optionally a beam-shaping element may be arranged on the optical element that is connected positively or by means of an optical medium with the optical element. Preferably beam-shaping element and optical element have similar or identical refractory indices and are connected with each other and with the laser chip by adhesive agents having corresponding refractory indices. | 03-21-2013 |
20120187099 | PROCESS FOR THE ADJUSTMENT OF A LASER LIGHT SPOT FOR THE LASER PROCESSING OF WORK PIECES AND A LASER DEVICE FOR THE PERFORMANCE OF THE PROCESS - The invention relates to a process for the adjustment of a laser light spot of high intensity for the laser processing of work pieces as well as a laser device for performing the proposed process. The laser device comprises a laser emitting a laser beam and at least one focusing lens for converging the laser beam as well as an optical operating element for adjusting the beam diameter of the laser beam. The invention proposes to use as operating element a diffractive optical element that separates the laser beam emitted by the laser into partial laser beams, with the partial laser beams generated by the diffractive optical element being assembled to form a resulting laser beam that acts on the work piece. By means of a suitable design of the diffractive optical element it is possible to adjust, in particular enlarge, the diameter of the laser light spot as required. | 07-26-2012 |
20120176601 | METHOD FOR DETERMINATION OF MOLECULAR STRUCTURES AND FUNCTIONS - A method for measuring transport properties of cell membranes or lipid bilayers by providing at least a substrate having a topside and a backside and plurality of nano- or micro-pores and a cell membrane covering the plurality of pores being accessible from both sides of the cell membrane for measurement, a material layer at least in the region of the pores to support the cell membrane at the pores but not hindering the transport through the cell membrane and the pores arranged on the substrate, either on the topside or on the backside, applying a fluid containing at least one molecule to the topside of the membrane in order to allow the molecule to move through the membrane, one of the pores and the material layer, and monitoring of the molecules having passed the material layer by using an optical detection method. | 07-12-2012 |
20120125094 | FLOW SENSOR - A flow sensor for measuring the flow of a gaseous or liquid medium with a sensor housing in which, between an inlet channel and an outlet channel, a flow channel extends that comprises a main channel and a measuring channel that is arranged parallel to the main channel. At least one main channel choke point is arranged in the main channel, and the measuring channel comprises a sensor element for measuring the flow. A measuring channel choke point in the measuring channel on the inlet and/or the outlet side, is arranged with the main channel choke point having at least one passage and the measuring channel choke point having a passage, both passages being of identical shape and extending parallel to each other in the flow direction. | 05-24-2012 |
20110233191 | ELECTRICAL HEATING ELEMENT - Electrical heating element | 09-29-2011 |
20110205677 | SWITCH-ON PROTECTION DEVICE FOR AN ELECTRICAL DEVICE THAT CAN BE OPERATED ON A SUPPLY VOLTAGE - The invention relates to a switch-on protection device ( | 08-25-2011 |
20110146903 | LASER HEAD AND METHOD OF CONNECTING TUBULAR PARTS BY THE LASER TRANSMISSION METHOD - The invention relates to a laser head ( | 06-23-2011 |
20110110390 | LASER DIODE STRUCTURE WITH INTEGRATED TEMPERATURE-CONTROLLED BEAM SHAPING ELEMENT AND METHOD FOR GAS DETECTION BY MEANS OF A LASER DIODE STRUCTURE - The invention relates to a laser diode structure, specifically for use in gas detection, with a hermetically sealed housing with electrical connections having a bottom and a window. A laser diode chip and a temperature control system for the laser diode chip are provided in the housing. A thermo element in the form of a Peltier element forms the temperature control system, and is connected via a lower flat surface to the bottom of the housing and via an upper flat surface to the laser diode chip, with a temperature-controlled beam shaping element as collimator provided between the laser diode chip and the window of the housing that acts on a laser beam emerging from a laser aperture of the laser diode chip before it passes through the window. The beam shaping element is in contact with the laser diode chip and is preferably connected via a boundary surface to the laser aperture with surface-to-surface contact or adhesively, or is made in one piece together with the laser aperture. | 05-12-2011 |
20100084097 | INDUCTION CONNECTING SLEEVE FOR CONNECTING WELDABLE THERMOPLASTIC ELEMENTS BY MEANS OF FUSION - An induction connecting sleeve for connecting weldable thermoplastic elements by means of fusion, with at least two sockets for the insertion of connection sections of the thermoplastic elements to be connected, and with an induction heating element embedded in the sockets, with operative sections of the induction heating element surrounded completely by a weldable thermoplastic material, and with the induction heating element arranged coaxially to the sockets. The induction heating element may be manufactured of metallic material with spring characteristics and to embed it under pre-tension in the thermoplastic material of the sockets. When the induction heating element is heated and the thermoplastic material of the socket of the induction connecting sleeve is plasticized, the induction heating element relaxes which causes radial pressure to build towards the connection section. | 04-08-2010 |
20090304372 | ELECTRICAL RESISTANCE HEATING ELEMENT FOR A HEATING DEVICE FOR HEATING A FLOWING GASEOUS MEDIUM - An electrical resistance heating element for a heating device, with at least one flow canal through which the gaseous medium is able to flow from a canal inlet side to a canal outlet side of the resistance heating element, and with at least one heating resistor that extends essentially in the direction of the flow canal, with the medium flowing past the heating resistor and being heated in the process. The heating resistor is rod-shaped and produced from an electrically conductive ceramic material. The electrical resistance heating element is intended for installation in a heating tube into which air, for example, is blown at one end. The heated flow of air exits from the other end of the heating tube. | 12-10-2009 |
20090277886 | LASER DEVICE WITH PENDULUM-TYPE PRESSURE ROLLER - The invention concerns a laser device for joining work pieces made of plastic by means of beam welding technology, with a processing head that has focusing devices for the laser beam. Here, the focusing device that is closest to the work pieces has a rotatably supported cylinder lens in the shape of a roller that focuses the laser beam along a single axis and presses the work pieces together in the form of a line in an area around the impact point of the laser beam. In order to enable the cylinder lens to always contact the surface of the work piece facing the processing head in a precisely tangential manner, the processing head has a pendulum-type suspension for the rotatable cylinder lens. This also makes it possible for the contact pressure exerted by the processing head to always act perpendicularly on the work pieces so that they are pressed together in all welding places in the same way in a defined manner during the welding process. | 11-12-2009 |
20090184094 | LASER ASSEMBLY WITH ELECTRONIC MASKING SYSTEM - The invention concerns a laser assembly for processing or joining work pieces by means of electromagnetic radiation, with a laser source that emits a laser beam, and an electronic masking system for the work pieces that succeeds the laser source. The masking system images the passing laser beam on the work pieces in a pattern that is randomly selectable. As masking system, a phase modulation array with preferably a common pixel size >4 μm is used, and also a laser source with a high beam quality of the laser beam that together permit the sharp imaging of patterns with a line width <2 mm on the work pieces. | 07-23-2009 |