Abstract:
A particle detection and classification system is disclosed. The system determines the size of measured particles by measuring light scattered by the particles. The system simultaneously determines whether measured particles are biological or non-biological by measuring fluorescent light from the particles. The system uses a parabolic reflector, and optionally, a spherical reflector to collect fluorescence light.
Abstract:
The present invention concerns a device for sorting and concentrating electromagnetic energy impinging a surface of said device, said surface comprising at least one plasmonics-based surface structure or similar structure of periodic or quasi-periodic surface topography. Device characterised in that said surface (V) is provided with at least two such surface structures (2), acting as individual concentrator structures, which are at least partially spatially overlapped or superposed.
Abstract:
A spectroanalytical system for receiving radiation to be analyzed along a first path includes a grating in the first path with periodic faceted grooves for spatially separating the radiation as a function of wavelength. The blaze angles of the faceted grooves are progressively graded. A multielement detector detects radiation spatially separated by the grating. An optical conditioner is disposed in the first path between the grating and a multielement detector.
Abstract:
The present invention concerns a device for sorting and concentrating electromagnetic energy impinging a surface of said device, said surface comprising at least one plasmonics-based surface structure or similar structure of periodic or quasi-periodic surface topography. Device characterised in that said surface (V) is provided with at least two such surface structures (2), acting as individual concentrator structures, which are at least partially spatially overlapped or superposed.
Abstract:
The invention is based on a method and a device for identifying properties of moving objects such as articles, materials, layers, inter alia. The data representing the properties of the objects are determined and evaluated by means of a spectral spatially resolved quantitative and/or qualitative analysis in real time. According to the invention, a spatially resolved spectral image of the object region to be measured is generated. Said image, prior to its evaluation, is subjected optically to a spatially resolved spectral masking which permits only selected significant spatially resolved spectral values and/or spectral ranges to pass. Afterwards, said significant spatially resolved spectral values and/or spectral ranges are optically compressed to form a readable data image. By virtue of the combination of the optical masking with an optical data compression, significant spectral data having a plurality of spectral properties can be compressed flexibly to form a new spatially resolved spectral image and the latter can be imaged on a multi- or one-dimensional line. The evaluation of the spectral image of an object takes place very rapidly, such that a high number of parts per second can be identified.
Abstract:
A color measurement instrument and color measurement method for measuring a color of a surface are provided. The instrument includes a plurality of independently switchable light sources characterized by differing spectral ranges, and a plurality of light guides configured to receive light from the light sources and to direct the received light to a light emitting portion of the instrument for illuminating the surface. The instrument further includes a first light detector configured to receive a portion of the light reflected from the surface. The first light detector is a wideband light detector.
Abstract:
A spectroanalytical system for receiving radiation to be analyzed along a first path includes a grating in the first path with periodic faceted grooves for spatially separating the radiation as a function of wavelength. The blaze angles of the faceted grooves are progressively graded. A multielement detector detects radiation spatially separated by the grating. An optical conditioner is disposed in the first path between the grating and a multielement detector.
Abstract:
A mirror fluorometer (10) with a rotatable mirror (24) positioned such that it is capable of projecting a converging cone of excitation light onto one or more of the samples wherein the fluorescent signals emitted from the fluorophores in the sample (34) is detected. A method of using the mirror fluorometer (10) for detecting fluorescent signals emitted by one or more fluorophores from samples (34) from a natural or industrial water system. The fluorometer (10), when coupled with a controller is capable of monitoring and optionally controlling an industrial process or system, including a paper mill process.
Abstract:
Described and claimed is a Mirror Fluorometer comprising a rotatable mirror positioned such that it is capable of projecting a converging cone of excitation light onto one or more of the samples wherein the fluorescent signals emitted from fluorophores in the samples is detected. Also claimed is a method of using this Mirror Fluorometer for detecting fluorescent signals emitted by one or more fluorophores from samples from a natural or industrial water system. The fluorometer, when coupled with a controller is capable of monitoring and optionally controlling an industrial process or system, including a paper mill process.
Abstract:
Device and method for recording the visual properties of a surface, comprising an imaging device (3) for recording light interaction (reflection or transmission) with a surface, a light source (2), and a sample area for positioning a sample (6) with a surface to be examined. The imaging device, the light source, and the sample area are arranged in such a way that in one image at least one of the surface properties is recordable as a function of a continuous range of angles between the illumination direction (7, 9) and the observation direction (4, 5). The imaging device is a CCD camera. The device and method are suitable for imaging and evaluating visual properties which are dependent on the optical geometry, such as flop behaviour and gloss.