Patent application number | Description | Published |
20110255750 | METHOD AND DEVICE FOR EXAMINING VALUE DOCUMENTS - The invention relates to an apparatus and a method for checking the usage state of a document of value. The document of value is illuminated with illumination light and with the help of an image sensor there is detected the light intensity of the light reflected from the document of value in order to take an image of the document of value. Of the taken image there is chosen an image detail in which there is imaged an opaque, reflective section of the document of value. The chosen image detail is examined for signs of creases which are possibly present in the opaque, reflective section of the document of value. The results of the examination for creases are used to evaluate the usage state of the document of value. | 10-20-2011 |
20120092648 | OPTICAL SYSTEM AND SENSOR FOR CHECKING VALUE DOCUMENTS HAVING SUCH AN OPTICAL SYSTEM - An optical system having a plane anisotropic retroreflector portion which specularly reflects radiation components in a first plane of incidence, but retroreflects radiation components in a second plane of incidence, a first imaging portion which produces on the retroreflector portion a line-shaped intermediate image of an object point in an object plane in a specified position relative to the system, the image extending along a line in the second plane of incidence, and a second imaging portion by means of which the line-shaped intermediate image is imaged into an image point. | 04-19-2012 |
20120248299 | APPARATUS FOR THE ANALYSIS OF AN OBJECT, PREFERABLY OF A DOCUMENT OF VALUE, USING OPTICAL RADIATION - A device for examining an object, preferably a document of value, by using optical radiation, having an optical waveguide which has an anisotropic retro-reflector section, which is formed along a surface curved in a plane of curvature and which reflects radiation components specularly in a first plane of incidence parallel to the plane of curvature but retro-reflects radiation components orthogonally with respect to the first plane of incidence, so that at least a proportion of the optical radiation falling in a glancing manner on the retro-reflector section is at least partly guided on the convex side of the surface by reflection on the retro-reflector section. | 10-04-2012 |
Patent application number | Description | Published |
20130136619 | BLADING - A blading for a turbomachine, particularly for a gas turbine, wherein thickened areas and depressions formed and disposed on a lateral wall having a plurality of blades such that at least one depression is disposed on a blade pressure side and at least one thickened area is disposed on a blade suction side for each blade of the plurality of blades. | 05-30-2013 |
20130136621 | BLADING - A blading for a turbomachine, particularly for a gas turbine, wherein thickened areas and depressions are formed and disposed on a lateral wall having a plurality of blades such that at least one depression or thickened area is disposed at a blade pressure side and at least one thickened area or depression is disposed at a blade suction side for each blade of the plurality of blades. | 05-30-2013 |
20130202444 | BLADE CASCADE AND TURBOMACHINE - A blade cascade for a turbomachine having a plurality of blades arranged next to one another in the peripheral direction, at least two blades having a variation for generating an asymmetric outflow in the rear area, as well as a turbomachine having an asymmetric blade cascade, which is connected upstream from another blade cascade, are disclosed. | 08-08-2013 |
20140044518 | CONTINUOUS-FLOW MACHINE WITH AT LEAST ONE GUIDE VANE RING - A continuous-flow machine, especially an axial compressor, having at least one guide vane ring that includes at least one row of adjustable guide vanes, whereby each guide vane is tapered relative to its vane body in the direction of its longitudinal axis as seen in a side view of the guide vane. In order to increase the stability of the flow in the continuous-flow machine, each row of guide vanes comprises first guide vanes and second guide vanes, whereby, as seen in a combined side view of a first guide vane and of a second guide vane, each first guide vane is tapered along its vane body in the lengthwise direction, and each second guide vane is tapered in the opposite direction. | 02-13-2014 |
Patent application number | Description | Published |
20130052758 | REMOVING ALUMINUM NITRIDE SECTIONS - Approaches for substantially removing bulk aluminum nitride (AlN) from one or more layers epitaxially grown on the bulk AlN are discussed. The bulk AlN is exposed to an etchant during an etching process. During the etching process, the thickness of the bulk AlN can be measured and used to control etching. | 02-28-2013 |
20130082237 | ULTRAVIOLET LIGHT EMITTING DEVICES HAVING ENHANCED LIGHT EXTRACTION - Light emitting devices having an enhanced degree of polarization, P | 04-04-2013 |
20130250986 | OPTICALLY PUMPED SURFACE EMITTING LASERS INCORPORATING HIGH REFLECTIVITY/ BANDWIDTH LIMITED REFLECTOR - Optically pumped laser structures incorporate reflectors that have high reflectivity and are bandwidth limited to a relatively narrow band around the central laser radiation wavelength. In some cases, the reflectors may be ¾-wavelength distributed Bragg reflectors (DBRs). | 09-26-2013 |
20130343420 | SURFACE EMITTING LASER INCORPORATING THIRD REFLECTOR - Surface emitting laser structures that include a partially reflecting element disposed in the laser optical cavity are disclosed. A vertical external cavity surface emitting laser (VECSEL) structure includes a pump source configured to emit radiation at a pump wavelength, λ | 12-26-2013 |
20140072009 | ELECTRON BEAM PUMPED VERTICAL CAVITY SURFACE EMITTING LASER - A vertical external cavity surface emitting laser (VECSEL) structure includes a heterostructure and first and second reflectors. The heterostructure comprises an active region having one or more quantum well structures configured to emit radiation at a wavelength, λ | 03-13-2014 |
20140133506 | DISTRIBUTED FEEDBACK SURFACE EMITTING LASER - A semiconductor surface emitting laser (SEL) includes an active zone comprising quantum well structures separated by spacer layers. The quantum well structures are configured to provide optical gain for the SEL at a lasing wavelength, λ | 05-15-2014 |
20140231745 | P-SIDE LAYERS FOR SHORT WAVELENGTH LIGHT EMITTERS - A light emitting device includes a p-side heterostructure having a short period superlattice (SPSL) formed of alternating layers of Al | 08-21-2014 |
20140369367 | Structure For Electron-Beam Pumped Edge-Emitting Device and Methods for Producing Same - A semiconductor light emitting device includes a light guiding structure, a light emitting layer disposed within the light guiding structure, and a structure for discharging excess electric charge within the device. The device may be excited by an electron beam, as opposed to an optical beam, to create electron-hole pairs. The light emitting layer is configured for light generation without requiring a p-n junction, and is therefore not embedded within nor part of a p-n junction. Doping with p-type species is obviated, reducing device loss and permitting operation at a short wavelengths, such as below 300 nm. Various structures, such as a top-side cladding layer, are disclosed for discharging beam-induced charge. A single device may be operated with multiple electron beam pumps, either to enable a relatively thick active layer or to drive multiple separate active layers. Cooperatively curved end facets accommodate for possible off-axis resonance within the active region(s). | 12-18-2014 |