Abstract:
Examples embodiments of a removable optical assembly are disclosed. A removable optical assembly can be removably attached to a probe of an optical analytical instrument. The removable optical assembly can comprise a spherical optical element. An embodiment of the removable optical assembly can allow contact interrogation of a sample. In some embodiments, the removable optical assembly can comprise an internal optical element. In other embodiments, the removable optical assembly can comprise an external optical element. Manufacture of the removable optical assembly can comprise a monolithic embodiment or an assembled embodiment comprising a plurality of subassemblies. Embodiments of the removable optical assembly can be conical, cylindrical or planar is shape. The removable optical assembly can, in some embodiments, be consumable and/or disposable.
Abstract:
A basic unit for a mobile water analyzing system includes a photometer comprising a light source configured to generate a measurement beam and a light detector configured to receive the measurement beam, a test element receptacle configured to allow a test element to be inserted therein, and a photometric measuring track arranged between the light source and the light detector. The measurement beam is coincident with the photometric measuring track during a photometric measurement, and not in a cross direction thereto.
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 modular optical sensor system for fluid media has a measuring module which includes an exchangeable fluid chamber and an exchangeable optic holder. The fluid chamber has an inlet and an outlet as well as a measurement space for the fluid medium. The optic holder has at least one optical transmitter and at least one optical receiver. The optic holder is inserted within the measuring module relative to the fluid chamber in such a way that the radiation emitted by the optical transmitter traverses the measurement space for the fluid medium in the fluid chamber and impinges on the optical receiver.
Abstract:
An instrument for fluorometric assays in liquid samples is disclosed. The instrument may include multiple optical channels for monitoring a first fluorophore associated with a target analyte and a second fluorophore associated with a control. The disclosed instrument finds utility in any number of applications, including microfluidic molecular biological assays based on PCR amplification of target nucleic acids and fluorometric assays in general.
Abstract:
An apparatus for optically inspecting an at least partially reflecting surface of an object includes first and second transverse carriers (12, 14) defining respective substantially circular segment-shaped cutouts (32). The transverse carriers (12, 14) are disposed at a longitudinal distance (D) from one another and the longitudinal distance (D) defines a longitudinal direction (17). A plurality of longitudinal members are configured to hold the first and second transverse carriers at the longitudinal distance (D). The longitudinal members are arranged at a defined radial distance to the circular segment-shaped cutouts. A translucent diffusing screen is held in the circular segment-shaped cutouts by the transverse carriers to form a tunnel-shaped inspection space. A multiplicity of light sources are arranged outside of the tunnel-shaped inspection space behind the diffusing screen. The light sources are configured to be controlled individually or in small groups to generate variable light-dark patterns on the diffusing screen. A workpiece receptacle is configured for accommodating the object in the tunnel-shaped inspection space. At least one camera is directed into the tunnel-shaped inspection space. An evaluation and control unit is configured to control the light sources and the camera to generate various light-dark patterns on the diffusing screen and to record and evaluate a plurality of images of the object in dependence on the light-dark patterns.
Abstract:
The invention relates to an integrated optical waveguide evanescent field sensor (1) for sensing of chemical and/or physical quantities, comprising a substrate (2) carrying a waveguide layer structure provided with—a waveguide core layer (10) sandwiched between two cladding layers (11, 12) formed by a lower (11) and a upper (12) cladding layer, of a lower refractive index than the waveguide core layer (10),—a sensing section (14A, 14B) comprising a sensing layer (13) included in the upper cladding layer (12), wherein a longitudinal section of said substrate including said waveguide layer structure and said sensing section (14A, 14B) is exchangeable as a separate element (20).
Abstract:
A preliminary diagnostic system comprising a reading station and at least one card comprising an integrated circuit and adapted to be read by the reading station, the integrated circuit of the card comprising a hydraulic circuit and a detection circuit, the card containing a reagent which is adapted to react to the presence of a marker of a disease, the hydraulic circuit being adapted to receive a sample of a biological liquid and to introduce the reagent in the sample, the detection circuit being adapted to detect the presence of the marker in the sample, the absence of the marker of the disease indicating the absence of the disease in the sample.
Abstract:
Gas analyzer systems and methods for measuring concentrations of gasses and in particular dry mole fraction of components of a gas. The systems and method allow for rapid measurement of the gas density and/or dry mole fraction of gases for a number of environmental monitoring applications, including high speed flux measurements. A novel coupling design allows for tool-free removal of a cell enclosing a flow path to enable in field cleaning of optical components.