Abstract:
Vorrichtung zur optischen Detektion von Analyten in einer Probe, mit optoelektronischen Komponenten in Form von mehreren optischen Detektoren zum Empfang von Photonen und mehreren optischen Emittern zum Emittieren von Photonen, bei der mindestens drei Emitter in einer flächigen Anordnung, nicht auf einer Linie, vorgesehen sind, und mindestens drei Detektoren in einer flächigen Anordnung, nicht auf einer Linie, vorgesehen sind, und die Emitter und/oder die Detektoren mindestens drei unterschiedliche Wellenlängencharakteristika aufweisen.
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 (f 1 , f 2 , f 3 ) 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 (α) 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 (α) 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 (f 1 , f 2 , f 3 ).
Abstract:
An illuminating and optical apparatus for inspecting soldering of PCB of the present invention comprises: a fixed member which forms a horizontal plane at the top thereof and a tilted plane at the side thereof; first illuminating means disposed at the upper plane of the fixed member for illuminating the inspecting part attached on the PCB; second illuminating means disposed at the tilted plane of the fixed member for illuminating the inspecting part to obtain an image whose shade is inverted to that obtained by the first illuminating means; control means for controlling brightness of the first and second illuminating means and turning on/off of power; and optical means disposed at the upper portion of the fixed member for photographing at large and small views the inspecting part illuminated by the first and second illuminating means under the control of the control means, thereby automatically inspecting the mounted and soldered states of various electronic parts on the surface of a printed circuit board of a surface mounting apparatus by evenly illuminating and photographing with an adequate view in accordance with the size thereof.
Abstract:
A device and method for identifying solid and liquid materials use near-infrared transmission spectroscopy combined with multivariate calibration methods for analysis of the spectral data. Near-infrared transmission spectroscopy is employed within either the 700 - 1100 nm or the 900 - 1700 nm wavelength range to identify solid or liquid materials and determine whether they match specific known materials. Uses include identifying solid (including powdered) and liquid materials with a fast measurement cycle time of about 2 to 15 seconds and with a method that requires no sample preparation, as well as quantitative analysis to determine the concentration of one or more chemical components in a solid or liquid sample that consists of a mixture of components. A primary application of such analysis includes detection of counterfeit drug tablets, capsules and liquid medications.
Abstract:
Gezeigt wird ein Verfahren und eine Vorrichtung zum Detektieren von bleihaltigen Glasstücken in einem einschichtigen Materialstrom von Objekten aus vorwiegend Altglas, wobei die Objekte mit im Wesentlichen monochromatischem UV-Licht (3) bestrahlt und das daraus resultierende Fluoreszenzlicht detektiert wird. Dabei wird vorgesehen, dass - das Objekt zusätzlich mit sichtbarem oder IR-Licht (4) bestrahlt wird, - das Transmissionslicht des sichtbaren oder IR-Lichts (4) nach dem Durchgang durch das Objekt detektiert wird, - und ein Objekt dann als bleihaltig definiert wird, wenn sowohl Fluoreszenzlicht für zumindest einen vorbestimmten, der Fluoreszenz von bleihaltigen Gläsern entsprechenden Wellenlängenbereich in einem vorbestimmten Intensitätsbereich vorliegt als auch Transmissionslicht in einem vorbestimmten Intensitätsbereich mit einer Intensität größer Null.
Abstract:
An optical inspection system for capturing images of backlit test objects at two or more aperture settings includes a telecentric imaging system having a first setting associated with a first size aperture stop and a second setting associated with a second larger size aperture stop. An illumination system includes a substage illuminator incorporating (a) a first set of one or more light sources surrounded by a first barrier that defines a first size aperture stop and (b) a second set of one or more light sources located beyond the first barrier and surrounded by a second barrier that defines a second larger size aperture stop. The respective first and second size aperture stops of the illumination system image to the respective first and second size aperture stops of the telecentric imaging system at the respective first and second settings.
Abstract:
The invention relates to the optical testing of articles. The invention is characterized in that a number of light sources (7) which are arranged along at least one circular line and define an illumination ring (2) are provided as the lighting unit, that the light sources (7) can be switched on and off at predetermined times and/or can be controlled with respect to the intensity of the light emitted by them, that an image recording unit or camera detects the object region (8) present within the illumination ring or partial illumination ring (2) by means of its image region, and that the distance between the light sources (7) that are individually arranged along the illumination ring (2) or the light segments (7'') or subsegments (7''') formed by the light sources (7) or the peripheral extent of the regions of the illumination ring (2) not emitting light and lying along the circular line form an angle at center s = 10°.
Abstract:
A fluid separation system (10) for separating compounds of a sample fluid in a mobile phase comprises a detector (50) adapted to detect separated compounds by providing an optical stimulus signal to the sample fluid and receiving a response signal to the optical stimulus signal. The detector (50) comprises a light source (100) adapted to provide an output light beam (230) as the optical stimulus signal. The light source (100) comprises a plurality of light emitting elements (200, 200A, 200Z) each adapted to emit a light beam (210, 210A1, 210A2, 210Z1, 210Z2) having a respective wavelength,, and a diffracting element (220). The plurality of light emitting elements (200, 200A, 200Z) are arranged that emitted light beams (210, 210A1, 210A2, 210Z1, 210Z2) impinging, on the diffracting element (220) are diffracted by the diffracting element (220) to form the output light beam (230).
Abstract:
Die Erfindung betrifft eine Vorrichtung sowie ein Verfahren zur Prüfung von Gegenständen. Erfindungsgemäß ist vorgesehen, - dass als Beleuchtungseinheit eine Anzahl von längs zumindest einer Kreislinie angeordneten, einen Beleuchtungsring (2) ausbildenden Lichtquellen (7) vorgesehen ist, - dass die Lichtquellen (7) zu vorgegebenen Zeiten ein- und ausschaltbar und/oder bezüglich der Intensität des von ihnen abgestrahlten Lichtes regelbar sind, - dass eine Bildaufnahmeeinheit oder mit ihrem Bildbereich den innerhalb des Beleuchtungsringes oder -teilringes (2) gelegenen Objektbereich (8) erfasst und - dass der Abstand zwischen den einzelnen längs des Beleuchtungsringes (2) angeordneten Lichtquellen (7) oder von von den Lichtquellen (7) gebildeten Leuchtsegmenten (7") oder Untersegmenten (7'") oder die Umfangserstreckung von nicht lichtabstrahlenden, längs der Kreislinie liegenden Bereichen des Beleuchtungsringes (2) einen Zentriwinkel σ ≤ 10° besitzen.