Abstract:
A conversion assembly for converting a spectrophotometer to a fluorometer which utilizes the light source and light detector of the spectrophotometer. The assembly has a conversion adaptor which is positionable in the spectrophotometer between the light source and the light detector. The adaptor is an enclosure having a receptacle for holding a sample container filled with the sample being analyzed and having openings formed therein to provide a light path for excitation light from the light source to the sample container and further to provide a light path for emitted luminescent light from the sample container to the light detector. In one embodiment the excitation light is centered on an optical shield on the front of the enclosure while light receiving openings at the edges of the front of the enclosure are positioned to receive off center excitation light. In another embodiment a light receiving opening is formed in the side of the enclosure and excitation light centered on the front of the enclosure is reflected around to the opening in the side of the enclosure by a plurality of reflectors.
Abstract:
The invention relates to an electronic device (1) for analyzing an analyte (2) present in a fluid, comprising:
a sensor (10) comprising a photonic chip (12) comprising a light guide (13) in which receptors (14) are arranged capable of interacting with the analyte present in the fluid, the interaction causing a local property change, and a sensor support (50); a closing element (60); a local property change transducer capable of converting the local property change into an electronic signal expressing the local property change, this transducer comprising: a light source (130); an optical detector (131),
the light guide comprising an interference arm (134) into which a resulting light beam is guided, characterized in that the radiant power of the resulting light beam guided into the interference arm is equal to or greater than 0.2 μW.
Abstract:
A protective sheet fixing jig fixes the protective sheet placed on the stage. The protective sheet fixing jig includes: an upper plate pressing the protective sheet on the stage to tightly fix the protective sheet to the stage; a post disposed at a side of the stage and connected with the upper plate; a bracket facing the upper plate and connected with the post; and a fixing part fastened to the bracket to press a lower surface of the stage.
Abstract:
Modular photoacoustic detection device comprising: a photoacoustic cell including at least two chambers connected by at least two capillaries and forming a Helmholtz type differential acoustic resonator; acoustic detectors coupled to the chambers; a light source capable of emitting a light beam having at least one wavelength capable of exciting a gas intended to be detected and which can be modulated to a resonance frequency of the photoacoustic cell; a first photonic circuit optically coupling the light source to an input face of a first of the chambers; wherein the first photonic circuit is arranged in a detachable manner in a first housing formed in the acoustic cell and emerging on the input face of the first chamber.
Abstract:
Systems for collecting light (e.g., in a flow stream) are described. Light collection systems according to embodiments include: a mount having an orifice for receiving light, an adapter configured for attaching a camera to the mount and a fastener for attaching a lens to the distal end of the mount and a releasably attachable connecter that is configured for coupling to an orifice plate and an aligner that is configured to couple with an aligner on the mount and maintain optical alignment between the mount and connector. Methods for coupling a connector and a mount are also described. Systems and methods for measuring light emitted by a sample (e.g., in a flow stream) are also provided.
Abstract:
In one aspect of the present disclosure an optical measurement device includes a sample holder defining a sample plane, wherein the sample holder is configured to arrange a sample carrier including an array of measurement positions in the sample plane, an illumination unit configured to illuminate the sample plane, a detector and an optical imaging system configured to image the sample plane including the array of measurement positions onto the detector, the optical imaging system including two or more curved reflective elements adapted to image the sample plane onto the detector with a magnification of between 2:1 and 1:2 and the detector being configured to take an image of all measurement positions of the array of measurement positions at a time.
Abstract:
A test element for a mobile water analyzing system includes a sample line and a key reagent disposed in the sample line. The sample line includes an inlet opening arranged at a first end, a pump port arranged at a second end of the sample line, an inlet section arranged between the inlet opening and the pump port, and a measuring section with at least one window arranged at an end of the measuring section. The inlet opening receives a water sample. The measuring section is arranged between the inlet section and the pump port and is coincident with a sample pathway.
Abstract:
An optical instrument monitors PCR replication of DNA in a reaction apparatus having a temperature cycled block with vials of reaction ingredients including dye that fluoresces in presence of double-stranded DNA. A beam splitter passes an excitation beam to the vials to fluoresce the dye. An emission beam from the dye is passed by the beam splitter to a CCD detector from which a processor computes DNA concentration. A reference strip with a plurality of reference emitters emit reference beams of different intensity, from which the processor selects an optimum emitter for compensating for drift. Exposure time is automatically adjusted for keeping within optimum dynamic ranges of the CCD and processor. A module of the beam splitter and associated optical filters is associated with selected dye, and is replaceable for different dyes.
Abstract:
A basic unit for a mobile water analyzing system includes a photometer, a test element receptacle, a photometric measuring track, and a pump actuator. The photometer comprises a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam. The test element receptacle is configured so as to allow a separate test element comprising a measuring section and a pump port to be inserted into the test element receptacle. The photometric measuring track is defined by the measuring section when the separate test element is inserted into the test element receptacle. The measurement beam and the photometric measuring track are aligned during a photometric measurement so that a photometric measurement occurs along a longitudinal length of each of the photometric measuring track and the measuring section. The pump actuator is cooperatively connected with the pump port.
Abstract:
A sample analyzer has an illuminator for illuminating an assay sample to cause luminescence, and a support for a sample vessel containing the assay sample. The support is adapted to position the assay sample proximate the illuminator. A detector is positioned along an optical axis extending from the illuminator, through the positioned assay sample, to the detector, so as to detect the luminescence from the assay sample. A reflector is removably disposed between the illuminator and the assay sample so as to reflect a portion of the luminescence back through the positioned assay sample toward the detector.