Abstract:
The present application provides a method of detecting an amount of a treatment agent, such as a flocculating agent, in a process stream comprising the step of measuring at least one absorption property of a sample obtained from the process stream at a wavelength of less than about 250 nm. Processes and systems for monitoring and regulating addition of treatment agents to process streams are also provided.
Abstract:
In one general aspect, a high-throughput optical suspension characterization instrument is disclosed, which can include hydraulically separate and at least partially transparent sample containers. A selection mechanism is operative to selectively direct light from a light source through different ones of the sample containers along an optical axis, and an off-axis scattering detector(40)is responsive to scattered light from the light source after it has interacted with a sample.
Abstract:
In a Raman spectroscopy apparatus, exciting light is focussed on a sample (26) as a line focus (38). Spectra from points in the line focus are dispersed in rows 46 on a CCD detector (34), having a two-dimensional array of pixels. The line focus moves longitudinally in a direction Y relative to the sample. Simultaneously and synchronously, charge is shifted in a parallel direction Y' within the CCD, so that data from a given point in the sample continues to accumulate, hi order to provide averaging in the X direction during fast, low resolution scanning, the line focus is swept across the sample in a zig-zag fashion, between boundary lines 60.
Abstract:
A surface inspection system, as well as related components and methods, are provided. The surface inspection system includes a beam source subsystem, a beam scanning subsystem, a workpiece movement subsystem, an optical collection and detection subsystem, and a processing subsystem. The system features a variable polarization a polarizing relay assembly arranged to selectively permit the scattered light having a selected polarization orientation to pass along a detector optical axis to a light detection unit in the detection subsystem. They system also features a collector output width varying subsystem for varying the width of an output slit in response to changes in the location of the location scanned on the workpiece.
Abstract:
The present invention relates to systems and methods for quantitative three-dimensional mapping of refractive index in living or non-living cells, tissues, or organisms using a phase- shifting laser interferometric microscope with variable illumination angle. A preferred embodiment provides tomographic imaging of cells and multicellular organisms, and time -dependent changes in cell structure and the quantitative characterization of specimen- induced aberrations in high-resolution microscopy with multiple applications in tissue light scattering.
Abstract:
A surface inspection system, as well as related components and methods, are provided. The surface inspection system includes a beam source subsystem, a beam scanning subsystem, a workpiece movement subsystem, an optical collection and detection subsystem, and a processing subsystem. The optical collection and detection system features, in the front quartersphere, a light channel assembly for collecting light reflected from the surface of the workpiece, and a front collector and wing collectors for collecting light scattered from the surface, to, greatly improve the measurement capabilities of the system. The light channel assembly has a switchable edge exclusion mask and a reflected light detection system for improved detection of the reflected light.
Abstract:
A surface inspection system, as well as related components and methods, are provided. The surface inspection system includes a beam source subsystem, a beam scanning subsystem, a workpiece movement subsystem, an optical collection and detection subsystem, and a processing subsystem. The system features a variable scan speed beam scanning subsystem, preferably using an acousto-optic deflector, with beam compensation, so that variable scanning speeds can be achieved. Also included are methods and systems for improving the signal to noise ratio by use of scatter reducing complements, and a system and method for selectively and repeatedly scanning a region of interest on the surface in order to provide additional observations of the region of interest.
Abstract:
A surface inspection system includes a beam source subsystem, a beam scanning subsystem, a workpiece movement subsystem, an optical collection and detection subsystem, and a processing subsystem. The optical collection and detection system features back collectors disposed in the back quartersphere, outside the incident plane, for collecting light scattered from the surface of the workpiece. The back collectors are disposed at a relative minimum in the portion of scattered light attributable to haze relative to the portion of scattered light attributable to defect scatter portion, or, alternatively, at a relative minimum in the Rayleigh scatter.
Abstract:
Analyzers and analyzer systems that include an analyzer for determining multiple label species, methods of using the analyzer and analyzer systems to analyze samples, are disclosed herein. The analyzer includes one or more sources of electromagnetic radiation to provide electromagnetic radiation at wavelengths within the excitation bands of one or more fluorophore species to an interrogation space that is translated through the sample to detect the presence or absence of molecules of different target analytes. The analyzer may also include one or more detectors configured to detect electromagnetic radiation emitted from the one or more fluorophore species. The analyzer for determining multiple target molecule species provided herein is useful for diagnostics because the concentration of multiple species of target molecules may be determined in a single sample and with a single system.
Abstract:
The system comprises a light source (10) generating a light beam (LB) to impinge on a sample (1); an imaging system (20) obtaining an image of said sample (1) and comprising a parabolic mirror (21) with a hole to allow the passage of the light beam (LB) towards the sample (1), the redirection of a scattered light component of the sample (1) towards a light capturing unit comprising a bundle of bifurcated fibers (15), and the elimination of the light coming from direct reflection at the sample (1); the bundle of fibers (15) having a central fiber (17) and at least one external fiber (16), said central fiber (17) receiving scattered light from the surface (1 S) and said external fiber (16) receiving scattered light from inside (11) the sample (1); and a measuring system (30) measuring a power and/or a spectrum collected independently in the central (17) and in the external fiber (16).