Abstract:
The present disclosure generally relates to a device and method for optical measurement. The optical device provides an optical architecture for precise measurement when the measurement light source has inherent noise, and comprises a light source (30) that generates an emitted light beam; a first beam splitter (41) that divides the emitted light beam into a compensation light beam and a measurement light beam, wherein the first beam splitter (41) directs the measurement light beam to a target (99); a second beam splitter (42) that redirects the compensation light beam from the first beam splitter (41), wherein a part of wavelength dependent characteristics of the first beam splitter (41) and the second beam splitter (42) are the same; a first photodetector (51) that detects the compensation light beam redirected from the second beam splitter (42); and a second photodetector (52) that detects the measurement light beam reflected by the target (99) and redirected by the first beam splitter (41). In order to confirm the calibration of the device, a reference mirror (71) is used as a target which reflects the measurement light beam to the first beam splitter (41).
Abstract:
The present invention relates to an image cytometer for capturing and analyzing the image of a sample in the momentum domain. The cytometer is provided with a light source for illuminating a sample with a light beam, an optical transforming system positioned behind the sample in the beam propagation direction for generating the Fourier transform in the space plane, a light sensor array and a spatially selective filter positioned with respect to the optical system such that the Fourier transform is imaged onto the light sensor array.
Abstract:
An apparatus for use in inspecting a wire segment is provided. The apparatus includes a guide tube 208 sized to receive the wire segment 210, and an array of mirrors 214 positioned about the guide tube. Each mirror 214 in the array 212 is oriented such that a reflection of the wire segment in the array of mirrors forms a circumferential view of at least a portion of the wire segment, and such that the reflection from each mirror is within a field of view from a single vantage point 202.
Abstract:
The invention is a SPR sensor that comprises a multi-layered plasmonic structure on a substrate for sensing. The SPR sensor has an enhanced figure of merit and lower limit of detection (system noise divided by the sensitivity) by at least two orders of magnitude than prior art SPR sensors. The plasmonic structure of the invention comprises a Nanostructured Porous Metal Layer (NPML) and at least one of: (a) buried dielectric layer under the nano-porous metal layer; (b) a nano-dimensional high index layer on top of the metal layer; and (c) a molecular layer for bio-functionalization adjacent to an analyte layer. The invention also encompasses many embodiments of measuring systems that comprise the SPR sensors of the invention with improved signal to noise ratio.
Abstract:
Apparatus and corresponding methods for measuring a plurality of parameters of a cut gemstone while it is positioned at a single measurement location. Apparatus comprise a plurality of light sources, each configured to emit light at a different one of a plurality of emission wavelengths or ranges of wavelengths such that the emitted light illuminates at least part of the measurement location. Apparatus further comprise a sensor assembly configured to sense light at a plurality of sensing wavelengths or ranges of wavelengths for measuring the plurality of parameters. The sensed light is received at the sensor assembly from the measurement location as a result of illumination of a cut gemstone located at the measurement location.
Abstract:
The invention relates to a flow apparatus (1) for a spectrometer system, comprising a first optics element (2) that is optically coupleable to a spectrometer (4) and comprising a second optics element (3) that is optically coupleable to a light source (5), which are arranged at a distance from one another in the region of a measurement gap (6) through which a liquid (8) can flow, in the region of which a light beam (7) emerging from the second optics element (3) and reaching into the first optics element (2) is at least partly absorbable, wherein a through-flow amount of the liquid (8) through the measurement gap (6) is influenceable by a change in the distance (10) between the two optics elements (2, 3) in order to be able to use the spectrometer system with a multiplicity of different samples. The invention also relates to a method for operating such a flow apparatus (1).
Abstract:
The white light spotlight for luminescence (e.g. biomarker) detection according to the invention comprises: •at least one solid state light emitting element to emit primary light, and •a plurality of wavelength converting materials, to convert part of primary light into secondary light, provided as an array of independent wavelength converting domains, wherein different domains comprise converting materials producing different secondary light emission bands/peaks, each converting material being adapted to convert primary light into secondary light, wherein each converting material is adapted to contribute to the total emission spectrum with at least one emission band/peak and the total secondary light emission provided by said converting materials provides a broad band emission spectrum except for at least one defined narrow wavelength range in which the spotlight produces no or significantly reduced light emission, and wherein the combined light emission from the converting materials is controllable to form said spectrum.
Abstract:
An examination apparatus 1 for microorganisms for measuring an amount of microorganisms in a sample solution, the apparatus including stirring and mixing means 7 for stirring and mixing the sample solution into which a sample and a fluorescent staining reagent are added, in a sample container 5 formed of a material allowing light to pass through, an excitation light source 10 including a light source that irradiates an irradiation target surface of the sample container 5 with excitation light while the sample solution is being stirred by the stirring and mixing means 7, light receiving means 14 for detecting light and converting the light resulting from a fluorescent emission caused by excitation light from the excitation light source 10, into an electric signal, and control means 23 for detecting the number of emissions based on the electric signal from the light receiving means 14 and calculating the amount of the microorganisms contained in the sample in the sample container 5 based on the number of emissions.