Abstract:
A laser-based spectroscopy system that combines a distance/proximity standoff sensor, a high-repetition rate laser spectroscopy system, and software with a decision-making algorithm embedded in a processing unit which in combination performs selective firing of the laser when the target object is within an interrogation zone. In a related embodiment, the system provides selective sorting of spectroscopic signals based on information from the standoff signal and from information contained in the spectral signals themselves. The laser emission can be actively controlled while keeping the laser firing, thereby preserving the thermal stability and hence the power of the laser; and the standoff sensor information and the spectral information can be combined to determine the proper relative weighting or importance of each piece of spectral information.
Abstract:
Die Erfindung betrifft eine Vorrichtung zur Aufnahme eines Hyperspektralbildes eines Untersuchungsgebietes mit - einer Lichtquelle (3) zur Bestrahlung des Untersuchungsgebietes, - einem Eingangsobjektiv (2) zur Erzeugung eines Bildes des Untersuchungsgebietes in einer Bildebene, - einem Spektrometer (11), das eine in der Bildebene angeordnete schlitzförmige Blende (7) zur Selektion eines schlitzförmigen Bereichs des Bildes, ein dispersive Element (9), das so aufgebaut und angeordnet ist, dass die dispersive Auffächerung des durch die Blende hindurch tretenden Lichts in einer von der Längsrichtung der Blende verschiedenen Richtung erfolgt, und einen Kamerasensor (10) zur Aufnahme des Beugungsbildes aufweist, und - einer Datenverarbeitungseinrichtung zur Aufnahme der Kamerasensorsignale als eine Vielzahl von Spektren mit jeweils zugeordneter Ortskoordinate x entlang der Längsrichtung X der Blende, - wobei die Vorrichtung dazu eingerichtet ist, in einer von der Längsrichtung X verschiedenen zweiten Richtung Y aufeinanderfolgende schlitzförmige Bereiche des Bildes des Untersuchungsgebietes mit zugeordneter Ortskoordinate y aufzunehmem, - dadurch gekennzeichnet, dass das Spektrometer (11) in der zweiten Richtung Y verfahrbar relativ zum Eingangsobjektiv (2) gelagert ist, eine Antriebseinrichtung zum gesteuerten Verfahren und Einstellen der Position des Spektrometers (11) in der zweiten Richtung Y vorhanden ist und dass die Datenverarbeitungseinrichtung dazu eingerichtet ist, das Spektrometer (11) schrittweise zu verfahren, um so sukzessive aufeinanderfolgende schlitzförmige Bereiche mit Spektren mit zugeordneten Ortskoordinaten x, y aufzunehmen und zu dem Hyperspektralbild zusammenzusetzen.
Abstract:
There is described a device (1) for offline inspection and color measurement of printed sheets for the production of banknotes and like printed securities, comprising (i) a console (10) having a supporting surface (10a) for supporting a sample printed sheet (S), (ii) a multipurpose measuring apparatus (20), which multipurpose measuring apparatus (20) comprises multiple sensors (22, 23) including at least one camera (22) for taking images of selected portions of the sample printed sheet (S) and a color measurement sensor (23) for performing spectrophotometric, colorimetric, and/or densitometric measurements at selected locations on the sample printed sheet (S), (iii) a display (30) for displaying the images taken by the camera (22) and the measurements performed by the color measurement sensor (23), and (iv) a control and processing unit (40) coupled to the multipurpose measuring apparatus (20) and the display (30). The device (1) comprises a moveable sensor beam (200) housing the multipurpose measuring apparatus (20), which moveable sensor beam (200) is displaceable along an x-axis over the supporting surface (10a) of the console (10) and over the entire surface of the sample printed sheet (S) located on the supporting surface (10a), the multiple sensors (22, 23) being mounted on a common sensor head (21) which is displaceable within the moveable sensor beam (200) along a y-axis so that the multipurpose measuring apparatus (20) can selectively take images of selected portions of the sample printed sheet (S) by means of the camera (22) or perform measurements at selected locations on the sample printed sheet (S) by means of the color measurement sensor (23). The control and processing unit (40) is configured to control displacement of the moveable sensor beam (200) along the x-axis and of the sensor head (21) along the y-axis.
Abstract:
A solid state image pickup device (31) in which a plurality of picture elements are arranged in two dimensions to pick up the image of the distribution in two-dimensional space of radiative ray, light beams, electrons, ions, etc., and which is characterized by an opening (34) piercing a substrate (33b) being provided at the roughly center of an image pickup part (33) where the picture elements are arranged, and a charge transfer path to connect charge transfer electrodes (33d) to read out the image of each picture element with one another being wired, avoiding the opening (34). Furthermore, the image pickup part (33) is divided into at least two regions with the boundary between them lying partially in the opening (34), and each region has an exclusive register for charge readout. Hereby, this image pickup device doubles as an image pickup device to pick up the two-dimensional distribution of radiative ray, etc. and an aperture to this radiation.
Abstract:
This invention concerns spectroscopy apparatus comprising a light source (101) arranged to generate a light profile (110) on a sample, a photodetector (103) having at least one photodetector element (104) for detecting characteristic light generated from interaction of the sample with light from the light source (101), a support (109) for supporting the sample, the support (109) movable relative to the light profile (110), and a processing unit (121). The processing unit (121) is arranged to associate a spectral value recorded by the photodetector element (104) at a particular time with a point on the sample predicted to have generated the characteristic light recorded by the photodetector element (104) at the particular time based on relative motion anticipated to have occurred between the support (109) and the light profile (110).
Abstract:
Provided is an analysis target region setting apparatus that can accurately set an analysis target region, based on an observation image of a sample obtained with an optical microscope and the like irrespective of texture on the sample surface when the analysis target region is set therein. The analysis target region setting apparatus according to the present invention divides the observation image into a plurality of sub-regions based on pixel information on each pixel constituting the observation image. Subsequently, consolidation information on each sub-region is calculated, and two adjacent sub-regions themselves are consolidated based on the consolidation information. According to this, it is possible to divide the observation image into sub-regions having similar pixel information with a disregard of noise attributed to the shape of a surface and the like. A user designates one sub-region from among the sub-regions finally obtained, as the analysis target region.