Abstract:
The present invention discloses a flow cell optical detection system comprising a light source, a flow cell and a light detector, wherein the light detector is arranged in a separate detector unit that is arranged to be releasably attached to a detector interface, the detector interface being in optical communication with the light source and comprises optical connectors for optically connecting the flow cell and the detector unit in the light path from the light source, and wherein the flow cell is an interchangeable unit arranged to be held in position by the detector unit when attached to the detector interface.
Abstract:
An imaging device including an illumination module including at least one emitter for emitting at least one excitation beam, a scanning and injection module including an image guide, a proximal end and a distal end of which are linked by a plurality of optical fibers, and a scanning and injection optical system configured to alternately inject the at least one excitation beam into an optical fiber of the image guide from the proximal end of the image guide, and a detection module including at least one detector for detecting at least one luminous flux collected at the distal end of the image guide. At least one of the illumination module and the detection module is optically conjugated with the scanning and injection module by a conjugating optical fiber.
Abstract:
An imaging device includes an illumination module comprising at least one emitter for emitting at least one excitation beam; a scanning and injection module comprising an image guide, a proximal end and a distal end of which are linked by a plurality of optical fibers; a scanning and injection optical system configured to alternately inject the at least one excitation beam into an optical fiber of the image guide from the proximal end of the image guide; a detection module comprising a detector for detecting a luminous flux collected at the distal end of the image guide, wherein at least one of the illumination module and the detection module is optically conjugated with the scanning and injection module using a conjugating optical fiber.
Abstract:
An apparatus and devices for measuring fluorescence lifetimes of fluorescence sensors for one or more analytes, the apparatus comprising (c) one or more reference systems (3,6,7), said reference systems each comprising one or more reference light sources (3) and being adapted to receive one or more excitation signals (1a), to produce reference optical signals (6b) in response thereto, and to produce one or more electrical reference output signals (7b) in response to one or more excitation signals (1a); and (d) or more phase detectors (10), said phase detections being adapted to detect one or more delays of said one or more electrical output signals of said one or more fluorescence sensor systems and said one or more reference systems, and to produce one or more phase output signals; and a method of measuring concentration of one or more analytes using such apparatus and/or devices.
Abstract:
A low cost portable fiber optic fluorometer is packaged as a personal computer peripheral and is based on interchangeable modules. One embodiment of the fluorometer comprises an excitation source, a detector, a signal processor, frequency source, wavelength selector, and an optical interface. The optical interface is exclusively fiber optic-based, thereby simplifying optical alignment and reducing the cost of the fluorometer. In another embodiment, the excitation source is an inexpensive monochromatic excitation source. In this case, the monochromatic excitation source and the first wavelength selector are preferably removable and replaceable, so that the fluorometer is advantageously able to generate different excitation wavelengths and detect different emission wavelengths. A fluorescence measurement method comprises the steps of generating an excitation signal; transmitting the excitation signal to a system under study which, in response, generates an emission signal; and detecting both the excitation signal and the emission signal with the fluorometer, and then using the detected excitation signal as a reference signal to calibrate the fluorometer and to nullify distortion errors in the emission signal. The use of the excitation signal as a reference signal provides an advantageously simple way to calibrate the fluorometer and to nullify distortion errors in the emission signal. An alternative method allows the precise shapes of the emission signal and the excitation signal to be profiled. The fluorometry method and apparatus can both advantageously be used for performing both direct fluorescence lifetime measurements and for performing phase fluorometry.
Abstract:
The sensor system monitors solutes in a liquid stream by analyzing the amount of light absorbed in a liquid in a particular wavelength band. The sensor system is arranged for selectability of the type of fiber used for transmission and adjustability of the liquid gap length in the liquid so that individual installations can be arranged with optimum characteristics for sensing particular chemical species in solution by absorption spectroscopy.
Abstract:
The present invention relates to an optical flow cell for a measuring device, having an input light guide with a light exit surface, an output light guide with a light entrance surface, said input light guide and output light guide being integrated with a holder to form an optical flow cell, and wherein the holder extends along a first axis and has a through hole for receiving a flow of a sample fluid, said through hole being transversal to said first axis, and the input light guide and output light guide further are arranged in said holder so that the light exit surface and the light entrance surface extend into said through hole and are arranged to be in optical alignment with each other and at a first distance from each other. The invention also relates to a measuring device having at least one optical flow cell.
Abstract:
A sensor positioning device, having a holding module, with a sensor receptacle, fastening element and spring element, the sensor receptacle being mounted movably relative to the fastening element along a compensating axis. The spring is arranged between the fastening element and the sensor receptacle to cooperate therewith, to create a restoring force during movement of the receptacle relative to the fastening element. A measurement connector with an abutment is configured for arrangement onto a process container, and is configured for releasable arrangement on the holding module. The sensor positioning device is configured such that, when the measurement connector is arranged on the holding module, the sensor receptacle is movable relative to the fastening element along the axis, and a pressing force of the sensor receptacle onto the abutment of the measurement connector is created by the spring. A sensor unit, for turbidity measurement, is provided having the sensor positioning device.
Abstract:
A modular device for remote chemical material analysis with a basic function unit which is formed with a transport module, which is partly equipped with a mobile frame construction which is set up with at least a power supply of the laser, a detection system, designed for plasma radiation dispersion according to the wavelength and its record, a control and evaluation block in the form of PC and a control electronic block and partly is connected with a laser module which contains a laser head, which serves as a source of laser pulses, where the essence of the invention is that the laser module is equipped with a laser beam router of optional routing of laser pulses either into a stand-off module when analyzed with a “Stand-Off LIBS” method or into a fiber module when analyzed with a “Remote LIBS” method.
Abstract:
An optical element includes a main body formed of a light transmissive material and including an arc-shaped optical path, and a gap formed on the arc-shaped optical path in the main body. The gap may have a notch shape. The main body may have a semicircular plate shape. The main body may have a hemispherical shape.