Abstract:
Un mécanisme de distribution de liquide (34) comporte une sonde pourvue d'une pointe (70) pour la distribution de liquide et une pompe assurant pour l'ensemble la libération de liquide de la pointe de la sonde (70) en quantités dosées, telles que des gouttes. La sonde de distribution est capable de détecter la formation d'une goutte et la séparation de cette goutte de la sonde (70) grâce à un signal haute fréquence (74, 76) s'appliquant à la pointe de la sonde (70) et par l'intermédiaire d'un élément conducteur relié à un circuit d'amplification et d'analyse (78, 80, 82, 84) situé au-dessous de la sonde et de la chambre de réaction renfermant un fluide de réception. L'élément conducteur détermine également le moment où la sonde est introduite dans le liquide de réception.
Abstract:
An imaging apparatus for infrared ray nonlinear molecular vibration spectrum is provided to improve detection sensitivity by using molecular vibration and infrared pump beam. An imaging apparatus for infrared rays nonlinear molecular vibration spectrum comprises a pump beam source(10) generating an infrared pump beam, a probe beam source(20) generating a probe beam, a beam combiner(30) combining the pump beam and the probe beam, a scanner(40) scanning the combined pump and probe beam to a plane, a first optical collector(50) collecting the scanned pump and probe beam at a local point, a first collimator(60), a first dichroic beam splitter(70), a reference interferometer(80), an optical interferometer beam combiner(90), a photodetector(100), and a data analyzer(110). The infrared pump beam excites molecules of medium forming a sample. The probe beam detects a coherence state of the excited molecules. The beams collected by the first optical collector are subject to an interaction with the sample, and aligned in parallel through first collimator. The first dichroic beam splitter separates a phase-shift probe beam from the collimated beam by removing an infrared pump beam. The reference interferometer generates a reference probe beam by separating a probe beam from the scanned beam. The optical interferometer beam combiner combines the phase-shift probe beam to the reference probe beam. The photodetector detects intensity of a molecular oscillation interference optical signal through the combined phase-shift and reference probe beam. The data analyzer generates a spectrum signal according to a coherence intensity of the molecule oscillation of the sample by collecting the optical signal.
Abstract:
The present invention relates to a device for obtaining images of bacterial cultures in a dish. The proposed device includes a support for a culture dish to be analyzed surrounded by an annular light emitting source facing an image capturing device and a non-reflective surface which, in conjunction with a reflective surface arranged in the periphery of the support, form a preferably spherical-shaped contrast observation chamber, providing a glare- and reflection-free, uniform tangent illumination of the support.
Abstract:
A stage assembly, an imaging system that uses the stage assembly, and methods for using the stage assembly in a high content screening system. The stage assembly includes a stage having a top surface and an opposing bottom surface and an opening extending between the top and bottom surfaces to receive a specimen plate. The stage assembly also includes a calibration sample bay formed in the stage. A calibration sample can also be secured within the calibration sample bay.
Abstract:
A liquid dispensing mechanism (34) is provided which includes a dispensing probe having a tip (70) for dispensing liquid, a pump for collectively discharging fluid from the probe tip (70) in measured quantities such as droplets. The dispensing probe has the capability to detect droplet formation and droplet separation from the probe (70) through use of a radio-frequency signal (74, 76) to the probe tip (70) and a conductive element (72) connected to amplifying and analyzing circuitry (78, 80, 82, 84) disposed below the dispensing probe (70) and a reaction well (16) which contains a receiving fluid. The conductive element (72) also detects when the probe has been inserted into the receiving fluid.
Abstract:
An apparatus is provided for moving a reaction cartridge (10) to different processing areas (36, 38, 42) of the apparatus. Robots (34, 40) for moving the reaction cartridge to the various areas (30, 32, 36, 38, 42, 46) of the apparatus. An image forming device (42) is provided to detect images which indicate whether specific reactions have occurred in reaction wells (16) of the reaction cartridge (10). The apparatus also includes a mechanism (36) for aspirating and dispensing liquids which includes a liquid level detecting mechanism (70, 72, 74, 76, 78, 80, 82, 84). The device further includes a microprocessor and logic (44) for controlling the apparatus operation and analyzing the information received from the image forming device (42) to generate a visual indication of assay results.
Abstract:
Méthode de positionnement et de focalisation automatique de puits de réaction à des fins d'imagerie optique dans un appareil automatique à accès aléatoire programmable effectuant des analyses, cet appareil comprenant une cartouche (10) de réaction renfermant plusieurs puits de réaction nécessitant un positionnement précis dans les limites d'une image pour permettre un transfert exact des images optiques vers un système logique d'analyse de l'information optique. Ce système d'imagerie optique (185) assure la visualisation des résultats des analyses en cours. Un micro-processeur facilite le fonctionnement de l'appareil ainsi que le traitement de l'image.
Abstract:
A stain discriminating apparatus in which light rays having at least one light component having a wavelength in a predetermined range is projected to a cell sample (2) to discriminate the staining method by which the cell sample has been stained on the basis of the light intensity of the light component transmitted through the sample and having the wavelength (530 nm) in the predetermined range. An automatic cell sample classifying apparatus in which a plurality of cell sample slides (2) are sequentially fed to the stain discriminating apparatus (6) to determine the staining method by which the cell samples have been stained, respectively. One of the examination/classification programs previously stored in a memory (82) is read out according to the staining method as discriminated and the cell samples are processed in accordance with the program as read out.