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.
Abstract:
The present invention relates to a method and device for determining a property of an ambient environment. The device comprises a plasmonic sensing element; a first light source for illuminating a first and a second light sensor, the first sensor via the plasmonic sensing element; a second light source for illuminating the light sensors; circuitry for executing: a control function controlling light sources, a function receiving a measurement from the first sensor, and a first signal from the second sensor, a function receiving a reference from the first sensor, and a second signal from the second sensor, a function determining the property by comparing the measurement and reference signals, and the control function further controlling light sources such that a relation of intensities of light emitted by the light sources is constant over time.
Abstract:
A light, in particular for testing workpiece surfaces using a fluorescent marking device, which light has at least two lighting elements that emit electromagnetic radiation with different wavelength ranges. The intensity with which the lighting element irradiates can be adjusted separately for at least one of the lighting elements. Expediently, the light is configured to increase or reduce the intensity of at least one of the lighting elements and at the same time to keep the intensity of at least one other of the lighting elements constant, or to reduce it or increase it in the opposite way to the first-mentioned lighting element. The light is configured to adjust the intensity at such a speed that the human eye can adapt to a change in the intensity during the adjustment without adverse effects on the person's sight.
Abstract:
A fluid separation system for separating compounds of a sample fluid in a mobile phase comprises a detector adapted to detect separated compounds by providing an optical stimulus signal to the sample fluid and receiving a response signal on the optical stimulus signal. The detector comprises a light source adapted to provide an output light beam as the optical stimulus signal. The light source comprises a plurality of light emitting elements each adapted to emit a light beam having a respective wavelength, and a diffracting element. The plurality of light emitting elements are arranged that emitted light beams impinging on the diffracting element in a respective angle dependent on the respective wavelength are diffracted by the diffracting element into the output light beam.
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 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 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:
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.