Abstract:
An isothermal reaction and analysis system may include a receiver to receive sample holders, a thermal control subsystem to control a temperature of the receiver, an excitation subsystem, a detection subsystem and an analysis subsystem. Excitation sources and/or detectors are positioned to enhance data collection. Sample holders may include filters, selectively blocking and passing wavelengths or bands of electromagnetic radiation.
Abstract:
An NIR spectroscopy fluid analyzing system (1) using a series of LED's (21), each having its own preselected center wavelength, as illumination sources. These wavelengths have overlapping spectral widths, such that the measurement covers a broad spectrum. The LED's (21) illuminate the fluid sample sequentially, and subsequently the transmission absorbance through the sample and the reflectance or scattering from the sample is measured for the wavelength range of each LED. The measurements are performed using photodetectors (24,27,29). The concentrations of component parts of the fluid are expressed in the form of a polynomial, which is a function of the measured transmitted and/or reflected intensities, and of empirical coefficients, which are extracted by prior statistical analysis on measured intensities obtained from a large number of test samples having known concentrations of the component. A novel sample chamber (16), capable of performing optical absorption measurements on a flowing sample of fluid, is described.
Abstract:
A video inspection system includes first and second video cameras (36 and 48) mounted along a parallel axes. A lighting array (16) is pulsed, and resultant light is reflected from a specimen to both cameras. Orientation of the specimen is determined in accordance with an image generated from a first camera (36). This data is used to isolate a selected portion of the specimen for analysis by an image generated from the second camera (48).
Abstract:
Die Erfindung betrifft eine Vorrichtung (1) zur Emission elektromagnetischer Strahlung, insbesondere UV-Strahlung, die zumindest ein Strahlungsmittel (2) aufweist, das lediglich Strahlung in sichtbaren Wellenlängen emittiert. Erfindungsgemäß umfasst die Vorrichtung eine Einrichtung zur Erkennung eines Funktionsfehlers des Strahlungsmittels. Zweckmäßigerweise ist das Strahlungsmittel (2) zur Emission von lediglich UV-Strahlung und/oder IR-Strahlung vorgesehen und durch eine Leuchtdiode gebildet. In einer Ausgestaltung der Erfindung ist die Erkennungseinrichtung (3) zur kontinuierlichen Überwachung des Strahlungsmittels (2) auf Funktionsfehler eingerichtet und die Vorrichtung (1) weist eine Steuer- oder/und Regelungseinrichtung (4) auf, die dazu vorgesehen ist, das Strahlungsmittel (2) bei Erkennung des Funktionsfehlers durch die Erkennungseinrichtung (3) automatisch außer Betrieb zu setzen und/oder den Funktionsfehler anzuzeigen.
Abstract:
Die Erfindung betrifft eine Leuchte, insbesondere zur Prüfung von Werkstückoberflächen unter Benutzung eines fluoreszierenden Markierungsmittels, die zumindest zwei Leuchtmittel (2, 3) aufweist, die elektromagnetische Strahlung unterschiedlicher Wellenlängenbereiche emittieren. Erfindungsgemäß ist die Leuchte dadurch gekennzeichnet, dass für zumindest eines der Leuchtmittel (2, 3) eine Intensität, mit der das Leuchtmittel (2, 3) strahlt, separat verstellbar ist. Zweckmäßigerweise ist die Leuchte (1) dazu eingerichtet, die Intensität zumindest eines der Leuchtmittel (2, 3) zu vergrößern oder zu verringern und gleichzeitig die Intensität zumindest eines anderen der Leuchtmittel (2, 3) konstant zu halten oder entgegengesetzt zum erstgenannten Leuchtmittel zu verringern bzw. zu vergrößern. In einer Ausgestaltung der Erfindung ist die Leuchte (1) zur Verstellung der Intensität in einer derartigen Geschwindigkeit eingerichtet, dass sich das menschliche Auge während der Verstellung ohne Beeinträchtigung des Sehvermögens an eine Änderung der Intensität anpassen kann.
Abstract:
Provided herein is an apparatus, including a photon emitter configured to emit photons onto a surface of an article, a photon detector array configured to receive photons from surface features of the article; and a processing means configured for processing photon-detector-array signals corresponding to photons scattered from the surface features and photons fluoresced from the surface features, wherein the processing means is further configured for classifying the surface features of the article.
Abstract:
The present invention relates to an apparatus for detecting defects of elements to be subjected to examination, particularly metallic lids, comprising means (30) for lighting an element to be subjected to examination, an image acquisition unit for acquisition of images, such as a camera or like, able detecting image of said element to be subjected to examination lightened by said lighting means (30), a unit for processing images acquired by said image acquisition unit, suitable to detect said defects, wherein said lighting means (30) emit radiation beams according two or more frequencies (f1, f2, f3) included within a range set beforehand, each one of said radiation beams lighting said element to be subjected to examination according to an optical path, individuating an incidence angle (a) with respect to the surface of said element to be subjected to examination included between a grazing minimum incidence angle and a scattering maximum incidence angle, said lighting means (30) being provided so that incidence angle (a) realized by the optical path of each one of said radiation beams emitted by lighting means (30) is directly proportional or inversely proportional with respect to the relevant emission frequency (f1, f2, f3).
Abstract:
A method of "reading" the result of an assay effected by concentrating a detectable material in a comparatively small zone of a carrier in the form of a strip, sheet or layer through the thickness of which electromagnetic radiation such as visible light is transmissible, wherein at least a portion of one face of the carrier is exposed to incident electromagnetic radiation which is substantially uniform across the entire portion, the portion including the small zone, and electromagnetic radiation emerging from the opposite face of the carrier is measured to determine the assay result. Preferably the radiation is diffuse light.
Abstract:
An engineered video inspection lighting system includes a three-dimensional array (22) of solid-state light emitting diodes (18) focused to an inspection area. A single high-current, low-duration pulse is applied to selected elements of the array. Light thus generated is passed through a diffuser (26) and to a specimen (D). Light reflected from the specimen is received by a lens (32) of a video camera (34) disposed in an interior of the three-dimensional array (22). Data thus obtained is used to determine acceptability of the specimen in accordance with preselected standards.