Abstract:
A vertical beam spectrophotometer for measuring the light absorption of an assay prepared using standard wet chemistry procedures and conventional solid phase coated bead technology is disclosed. The spectrophotometer measures the absorption of the assay in a conventional reaction cuvette with the bead remaining in the cuvette. The light source of the spectrophotometer illuminates the bead, which diffuses the light into the surrounding assay solution. A lense projects the diffused light onto a photocell which converts it into an electrical signal having magnitude related to the light absorption of the assay. The signal is processed in a known manner by conventional processing circuitry to obtain an absorption value.
Abstract:
The present invention provides a system and method for collection, storage and processing of tissues and cells. The system includes a collection container with chambers for storing and processing tissues, which are controllably separated and maintain a physiologic environment for the tissues. The system also includes a fluidic device for isolating target cells of interest. The method includes receiving the tissue into a collection chamber, transferring the tissue to a processing chamber, dissociating the tissue into single cells, and passing the single cells to a device for isolating one or more target cells.
Abstract:
The present invention relates to a method for quantification of the amount of lactide in a lactide-based polymeric matrix by means of Infra Red Spectroscopy measurement. According to the invention the quantification is based on measurements performed on absorptions in the near Infra Red region of the electromagnetic spectrum. The invented method allows a rapid, easy and cheap quantification of lactide in a polymeric matrix, especially in PLA.
Abstract:
A handheld optoacoustic probe includes an ultrasound transducer array and optical fibers with a first end formed into a fiber bundle providing an input and a second, distal end providing an output. A light bar guide retains the distal end of the optical fibers on the same plane. One or more optical windows may be associated with, and spaced from the light bar guide so as to prevent contact between a coupling agent and the distal ends of the optical fibers, thus mitigating a potential acoustic effect of the coupling agent in response to light emitting from the fibers. A silicon rubber acoustic lens doped with TiO2 may be provided, with a reflective metal surrounding the outer surface of the acoustic lens. A handheld probe shell houses the light bar guide, the ultrasound transducer array, and the acoustic lens.
Abstract:
Устройство для анализа люминесцирующих биологических микрочипов содержит держатель (1) образца (2), средство (3) его освещения, оптическую систему с фильтром (6) для выделения света люминесценции образца и средство (7) фиксации изображения образца. Средство (3) освещения образца включает в себя лазерные источники (16, 17 и 18) возбуждения флуоресцентного излучения и волоконно-оптическую систему распределения излучения лазеров. Согласно изобретению оптическая система содержит два объектива (4 и 5), направленных навстречу друг другу, а держатель (1) объекта выполнен с возможностью позиционирования анализируемого образца по его поверхности, обращенной в сторону оптической системы, при этом лазерные источники (16, 17 и 18) возбуждения флуоресцентного излучения включают в себя по меньшей мере два лазера (16, 18) с разными длинами волн, а фильтр (6) выполнен многополосным.
Abstract:
An apparatus for detecting spectra in light emanating from chemical or biochemical reactions occurring in at least one reaction vessel (3) of a plurality of reaction vessels is disclosed. Each reaction vessel (3) has a receptacle portion having an emitting area from which light can emanate. The apparatus may include a masking element (5) having an array of apertures (6) through which light from each reaction vessel (3) can escape. A plurality of light waveguides (7) are arranged to guide light from the apertures (6) in the masking element (5) to a light dispersing device (8) for dispersing the light from each waveguide (7) into a dispersed spectrum. A light detecting device (10) detects specific spectra in the dispersed spectra of light substantially simultaneously. In one embodiment, the apertures (6) are substantially smaller in size than the emitting area of the reaction vessel, but in another embodiment, the apertures (6) are substantially similar in size to the emitting area of the reaction vessel and the light waveguides (7) have a diameter that tapers from a first end substantially similar in diameter to the area of the top of the reaction vessel to a second end that is substantially smaller in diameter. In an alternative embodiment, the light waveguides are not used, when light from the small apertures is directed straight at the light dispersing device. In a further alternative embodiment, several light waveguides are provided for each reaction vessel, each waveguide directing light to a different detector for detecting a different specific spectrum.
Abstract:
A scattered light collector for collecting light scattered by or originating from an object (210) to be examined and for guiding the collected light to a light detector (204), the collector comprising: a first free propagation region (223) for receiving scattered light comprising a light collection end and an input grating line, and a plurality of waveguides (236a, b, c) for guiding the collected light from the free propagation region to the detector, the first ends of the waveguides forming the input grating line of the free propagation region.
Abstract:
Certain examples described herein are directed to optical devices and systems that include first and second optical elements. In some examples, the first optical element may be configured to pass light received from an excitation source, and the second optical element may be optically coupled to the first optical element and may be configured to reflect incident light from the first optical element back to the first optical element and configured to pass the light reflected from the first optical element. Methods using the devices and systems are also described.
Abstract:
A method of controlling a device for imaging the interior of turbid media is provided. The device comprises: a receiving portion (2) for receiving a turbid medium (1) tobe examined; at least one light source (6) optically connected to the receiving portion (2) for irradiating the interior of the receiving portion (2); and at least one detector (7) opticallyconnected to the receiving portion (2) for detecting light emanating from the interior ofthe receiving portion (2). The at least one light source (6) and the at least one detector (7) areoptically connected to the receivingportion (2) such that a plurality of differentsource- detector position combinationsare formedover a complete measurement. The different source-detector position combinations define different light paths through the receiving portion (2). The method comprises a fast-measurement step in which a reduced set of data corresponding to onlya part of the plurality of source-detector position combinations is generated for providing fast-information about the interior of the receiving portion (2).