Abstract:
The invention relates to an arrangement for continuous determination of a substance comprising a chemically reacting sensor element (21) arranged in or adjacent to a limiting wall of a volume (22) containing the substance, where in a housing (2) of a modular device (1) optical elements to read the sensor element (21) are arranged, comprising at least one light source (35) illuminating the sensor element (21) and at least one sample detector (29) detecting the light scattered by the sensor element (21), and where a front side of the housing (2) comprises a coupling for the sensor element (21), so that the sensor element (21) may be interchangeably and modularly coupled to the front side of the housing (2). A glass body (24) is arranged adjacent to the coupling for direct contact with the sensor element (21) and separate conduits (34, 31) for the illuminating and for the scattered light are arranged rearward of the glass body (24). The modular device (1) allows for easily interchanging the modular sensor element (21) and provides an optical connection between the sensor element (21) and the detector (29) which is steady and allows for high quality measurements.
Abstract:
Described and claimed is a modular fluorometer and a method of using same to control an industrial water system, wherein said modular fluorometer comprises: one or more units with each unit comprising: a channel comprising an optically appropriate cell through which a water sample flows; a light source positioned outside said optically appropriate cell; an optional excitation filter positioned between the light source and the optically appropriate cell; a reference detector positioned outside the optically appropriate cell; an emission detector positioned outside the optically appropriate cell; an optional emission filter positioned between said emission detector and said optically appropriate cell; wherein if more than one unit is present in said modular fluorometer, said optically appropriate cells through which said water sample flows are aligned such that only one channel through which a water sample flows exists in said fluorometer.
Abstract:
The invention relates to an imaging system for optical automatic analysers, especially fluorescence readers. On the sample side, the imaging system contains a cylindrical lens array (6) and a prism array (7), which is arranged upstream of the cylindrical lens array. The prismatic effect of the prisms (7a-7c) of the prism array (7) lies in the direction of the cylinder axes of the cylindrical lenses (6a-6c). Together with a telescopic imaging system (8, 11), the inventive imaging system creates a number of parallel cylindrical focussing volumes between the cylindrical lens array (6) and a detector array (10), these focussing volumes being slanted towards the optical axis of the telescopic system in relation to the vertical. The arrangement enables the detection of fluorescence with a large aperture in one direction, and at the same time enables depth selective analysis of the fluorescence signal, especially the discrimination of the fluorescent radiation originating from the areas around the bases of the sample containers from the fluorescent radiation originating from the solution above. With the focussing volumes that are slanted towards the bases of the sample containers, the imaging system ensures that the fluorescence from the areas around the bases of the sample containers (5a-5c) is detected with the same sensitivity even when the heights of the bases vary in the individual sample containers.
Abstract:
An optical system made up of lens arrays (2i, 7) and normal lenses (41, 5, 42) is particularly suitable for use as a massive parallel reader (approx. 10 channels) for micro titer plates (1) and the like in absorption, fluorescence and luminescence.
Abstract:
The invention relates to an optical analyser wherein measuring light is directed from a sample to the detector. The apparatus has an optics module (15) which has a detector and optical means for directing light emitted by the sample to the detector and which module can be positioned alternatively either so that light is directed to the detector from above the sample or so that light is directed to the detector from below the sample. The invention is usable in particular in fluorometers and in luminometers.
Abstract:
A modular analytic system includes a base, at least one fluid sample processing module configured to be removably attached to the base, at least one fluid sample analysis module configured to be removably attached to the base, a fluid actuation module positioned on the base, a fluidic network comprising multiple fluidic channels, in which the fluid actuation module is arranged to control transport of a fluid sample between the at least one sample processing module and the at least one sample analysis module through the fluidic network, and an electronic processor, in which the electronic processor is configured to control operation of the fluid actuation module and receive measurement data from the at least one fluid sample analysis module.
Abstract:
A method and apparatus (1) for monitoring particles flowing in a stack are disclosed. The method comprises emitting light from a light source along an optical path for scattering from the particles, rotating a rotatable monitoring assembly (15) mounted in the optical path, and detecting the scattered light using a detector. The rotatable monitoring assembly (15) contains at least two in apertures, and the method further comprises rotating the rotatable monitoring assembly (15) into a plurality of different configurations. In an operation configuration, light passes through the rotatable monitoring assembly (15) and into the stack unimpeded. In a zero-check configuration, the rotatable monitoring assembly (15) blocks the light from reaching the stack. In a span-check configuration, light of varying intensity passes from the light source through the rotatable monitoring assembly (15) into the stack. In a contamination-check configuration, the light is reflected through the rotatable monitoring assembly (15) onto the detector, without entering the stack. In the safety-shutter configuration, the rotatable monitoring assembly (15) protects optical components in the instrument from particles in the stack.
Abstract:
An efficient absorption spectroscopy system is provided. The spectroscopy system may be configured to measure solid, liquid or gaseous samples. Vacuum ultra-violet wavelengths may be utilized. Some of the disclosed techniques can be used for detecting the presence of trace concentrations of gaseous species. A preferable gas flow cell is disclosed. Some of the disclosed techniques may be used with a gas chromatography system so as to detect and identify species eluted from the column. Some of the disclosed techniques may be used in conjunction with an electrospray interface and a liquid chromatography system so as to detect and identify gas phase ions of macromolecules produced from solution. Some of the disclosed techniques may be used to characterize chemical reactions. Some of the disclosed techniques may be used in conjunction with an ultra short-path length sample cell to measure liquids.
Abstract:
An optical imaging system for interfacing with a separate examination apparatus and methods of making and using the same are disclosed. The optical imaging system can include an imaging housing including a housing enclosure and a housing receptor plate, a subject support mount, a cart including an extendable arm, an optical arrangement including an optical source, a cantilever mirror system, and the housing enclosure, and a detection optical path providing optical communication between the cantilever mirror system and an optical detector. The subject support mount allows optical illumination via at least one optical port. The extendable arm is affixed to the cart at one end and the optical arrangement at another end. The extendable arm can move from a retracted position to an extended position without contacting the subject support mount or the subject.
Abstract:
Systems and methods are provided for sample processing. A device may be provided, capable of receiving the sample, and performing one or more of a sample preparation, sample assay, and detection step. The device may be capable of performing multiple assays. The device may comprise one or more modules that may be capable of performing one or more of a sample preparation, sample assay, and detection step. The device may be capable of performing the steps using a small volume of sample.