Abstract:
Using an LED element as a light source, a photometric unit including the light source, a light receiving element and other components therebetween is reduced in size. A holder 30 detachable from the device as a unit holds a light emission unit 15 formed of an LED and a light receiving element 21, and the holder is placed inside a thermostatic chamber 18 which holds a constant temperature fluid 17. Thus, the photometric unit is reduced in size.
Abstract:
The present invention relates generally to the field of biochemical laboratory instrumentation for different applications of measuring properties of samples on e.g. microtitration plates and corresponding sample supports. The object of the invention is achieved by providing an optical measurement instrumentation wherein a sample (281-285) is activated (212AS, 218AS) and the emission is detected (291, 292), wherein between the activation and detection phases of measuring the sample, a shift is made in the relative position between the sample and means (218) directing the activation radiation to the sample as well as in the relative position between the sample and the means (293) receiving the emission radiation from the sample. This can be implemented e.g. by moving (299) the sample assay plate and/or a measuring head between the activation and emission phases of a sample. The invention allows a simultaneous activation of a first sample and detecting emission from a second sample thus enhancing efficiency of the measurement.
Abstract:
A light amount is increased and an analyzing accuracy can be increased in accordance with an enlargement of a load angle.. However, scattered light tends to be loaded into a light receiving element in an analysis accompanied by scattered light, and the dynamic range of a concentration which can be measured becomes narrow. In the invention, light is dispersed by a light dispersing portion (20), a load angle of the received light is changed per wavelength, the load angle is made larger for light of a wavelength having a small light amount, and the load angle is made smaller for light of a wavelength having a large light amount and used for an analysis accompanied by scattered light. Accordingly, it is possible to gain a dynamic range of a concentration which can be measured in the analysis accompanied by scattered light, while increasing the light amount and maintaining the analyzing accuracy.
Abstract:
Using an LED element as a light source, a photometric unit including the light source, a light receiving element and other components therebetween is reduced in size. A holder 30 detachable from the device as a unit holds a light emission unit 15 formed of an LED and a light receiving element 21, and the holder is placed inside a thermostatic chamber 18 which holds a constant temperature fluid 17. Thus, the photometric unit is reduced in size.
Abstract:
Light emitting diodes (LEDs) are mounted in an array to an upper structure overlying a lower structure with a plurality of light detectors thereon. Each LED is configured to overlie a separate detector. Each LED emits light at a frequency relevant for measuring optical density of a specimen. LEDs having different frequencies are included within the LED array. A corresponding array of detectors is also provided, mounted to the lower structure. Spacing between adjacent LEDs and between adjacent detectors match a spacing between wells in a microtiter plate. Spacing between the lower structure and the upper structure supporting the LEDs is sufficient for the microtiterplate to fit between. Circuitry sequentially fires individual LEDs and gathers optical density data through the detectors for specimens in the wells of the microtiter plate. The structures are then moved to a next adjacent well position on the microtiter plate and the process repeated.
Abstract:
Die vorliegende Erfindung bezieht sich auf eine Vorrichtung (10,30,40,50,60) zur photometrischen Untersuchung von Proben. Sie weist eine Probenhalterungseinrichtung (11,31,41,51,61) für mindestens zwei Probengefäße sowie eine Messeinrichtung und eine bewegbare Einrichtung (14,34,44,54) auf. Die Probenhalterungseinrichtung ist dabei stationär ausgebildet, und die Messeinrichtung ist an der bewegbaren Einrichtung angeordnet, so dass sie mittels der bewegbaren Einrichtung verfahrbar ist.
Abstract:
Light emitting diodes (LEDs) are mounted in an array to an upper structure overlying a lower structure with a plurality of light detectors thereon. Each LED is configured to overlie a separate detector. Each LED emits light at a frequency relevant for measuring optical density of a specimen. LEDs having different frequencies are included within the LED array. A corresponding array of detectors is also provided, mounted to the lower structure. Spacing between adjacent LEDs and between adjacent detectors match a spacing between wells in a microtiter plate. Spacing between the lower structure and the upper structure supporting the LEDs is sufficient for the microtiter plate to fit between. Circuitry sequentially fires individual LEDs and gathers optical density data through the detectors for specimens in the wells of the microtiter plate. The structures are then moved to a next adjacent well position on the microtiter plate and the process repeated.
Abstract:
L'invention concerne un dispositif d'analyse par chimie sèche et spectrophotométrie d'échantillons sanguins à disposer sur rotor consommable (10), ledit dispositif comprenant - une source de lumière polychromatique (21), - une ligne optique pour éclairer (22, 23, 24) un volume d'échantillon (E) à analyser avec ladite lumière polychromatique, en sorte de former un faisceau transmis après traversée du volume d'échantillon, - un système de référence pour l'obtention de l'intensité d'au moins une fraction de référence de la lumière polychromatique, - un système optique de distribution (33, 34 ; 133 ; 233, 234 ; 533, 534) transformant ledit faisceau transmis en un faisceau éclairant une pluralité d'au moins deux capteurs optiques (35 ; 135 ; 235 ; 535), chaque capteur mesurant, à une longueur d'onde donnée, l'intensité de la fraction du faisceau lumineux transmis qui lui est appliquée.