Abstract:
A fiber-optic probe is formed by a pair of optical fibers one of which delivers light to a target zone and the other collects light from a field of view in the target zone. One of these fibers isprovided with a window that opens substantially perpendicular to the longitudinal axis of the fiber and with a transverse surface oriented at an angle to the longitudinal axis of the fiber to reflect light through the window or from the window longitudinally of the axis of this fiber. Two fibers are physically interconnected to position the window on one side of and immediately adjacent to the target zone and the axial end of other fiber to deliver or receive light from another side of the target zone preferably substantially perpendicular to the one side.
Abstract:
The method and apparatus as shown in the present invention is to measure the absorption of light by material contained in a liquid. A transmitted signal is sent through a measurement window to a measurement chamber to a target point just inside the measurement window. The reflected signal indicates the amount of light absorbed by a material in the measurement chamber which allows for the amount of materials in a liquid to be determined. Adjustments are made through an optical block and a light control molecule to correct for variations in light intensity.
Abstract:
A biological material measuring instrument is disclosed. The biological material measuring instrument comprises: a rotating body including one or more cartridge holders having cuvettes in which a reagent and an analyte in a sample react; and a main body including at least a pair of light-emitting parts and light-receiving parts for optically measuring the analyte in the sample, wherein the rotating body further includes: a light-emitting optical waveguide for guiding the light of the light-emitting parts to a light-irradiated surface, which is one surface, of the cuvette, excluding a sample inflow surface into which the sample flows and a centrifugal force-applied surface to which centrifugal force is applied by the rotation of the rotating body such that particle components in the sample are separated from the sample, and adsorbed thereto or precipitated thereon; and a light-receiving optical waveguide for guiding, to the light-receiving parts, the light penetrating a light-receiving measurement surface, which is one surface excluding the sample inflow surface and the centrifugal force-applied surface.
Abstract:
Devices are known for determining the concentration of at least one gas in a sample gas stream, having an analysis chamber (10) into which the sample gas stream and a reaction gas stream can be introduced, a detector (48) which measures the optical radiation emitted by the reaction, and a connecting channel (22) via which the analysis chamber (10) is connected to the detector (48). In order to increase the efficiency and measuring accuracy of these devices and to avoid deposits on the walls of the analysis chamber (10) the invention proposes forming the connecting channel (22) as a light conductor (26) which extends from the analysis chamber (10) to the detector (48).
Abstract:
The invention relates to an optical measurement device for a reaction vessel, and a method therefor. An object is to measure the optical state within a reaction vessel in an efficient, rapid, and highly reliable manner, without an expansion of the device scale. The configuration includes: a vessel group in which two or more reaction vessels are arranged; a light guide stage having two or more linking portions to which front ends of light guide portions, which have a flexibility, that optically connect with the interior of the linked reaction vessels, are provided; a connecting end arranging body that has an arranging surface that arranges and supports along a predetermined path two or more connecting ends, to which back ends of the light guide portions, in which the front ends thereof are provided to the linking portions, are provided, the connecting ends are provided corresponding to the respective linking portions; a measurement device provided approaching or making contact with the arranging surface that has measuring ends that are successively optically connectable with the respective connecting ends along the predetermined path, and in which light from within the reaction vessels is receivable by means of optical connections between the connecting ends and the measuring ends; and a light guide switching mechanism that relatively moves the respective connecting ends arranged on the connecting end arranging body and the respective measuring ends such that they are successively optically connected.