Abstract:
The invention relates to a system for raising the spatial resolution of radiation detectors. The aim of the system provided for in the invention is to make it possible to raise spatial resolution in variably predefinable manners and to do so with a low number of component groups. To this end a land (2) which is not transparent to the radiation to be detected is positioned in front of each radiation detecting element (1). The width (ba) of the land is fixed such that it is a fraction of the width of the radiation detector and the land (2) can be displaced across the entire width of the detector by means of an adjustment element (3). Discrete adjustment positions of the adjustment element (3) can be set by means of a control and data line (4) and in a control and evaluation unit (5) said discrete positions can be allocated to the corresponding intensity signals of the radiation detecting element (1) transmitted via a line (6). Following numerical transformation, the intensity curve of the radiation to be detected can be represented at greater resolution in accordance with the ratio detector width to land width.
Abstract:
A bearing for allowing the movement of a movable mirror in a Michelson interferometer (1) includes a stationary hollow glass cylinder (7) and a movable assembly (10, 11, 16) which includes the movable mirror (17) and at least one graphite member (10, 11), the graphite member (10, 11) being slidably disposed within the bore of the glass cylinder (7). Preferably, there is an anti-rotation system for the movable assembly which includes a post (67) coupled with the movable assembly, a magnet (66) mounted on one end of the post and a stationary guide rail (71) positioned substantially parallel to the axis of rotation of the movable assembly and at a predetermined radial distance from the movable assembly.
Abstract:
The invention relates to an apparatus for analyzing a surface area of an object, comprising: a laser device (10) configured to emit monochromatic incident light (101) of a first wavelength (λ 1 ) as well as optionally a monochromatic incident light (102) of a second wavelength (λ 2 ) that differs from the first wavelength (λ 1 ), a first deflection means (20) configured to deflect said incident light (101, 102) onto a point (P ij (X i , y j )) of a surface area (A) of an object that is to be analyzed so that scattered light (104) is generated at said point (P ij (X i , y j )), wherein said deflection means (20) is further configured to deflect said incident light (101, 102) such that said surface area (A) is scanned in a pointwise fashion by said incident light (101, 102), a first sensor means (40) configured to detect said scattered light (104) and to provide from said detected scattered light (104) a scatter data set (S ij (λ k )) for the respective point (P ij (X i , y j )), wherein the respective scatter data set (S ij (λ k )) comprises intensities of the detected scattered light (104) for different wave numbers, and a processing unit (50) for processing and/or analyzing said data sets. Further, the invention relates to a method for analyzing a surface area of an object.
Abstract:
This invention concerns a transmission Raman spectroscopy apparatus comprising a light source (101) for generating a light profile (110) on a sample (102), a photodetector (103) having at least one photodetector element (103a), collection optics (104) arranged to collect Raman scattered light transmitted through the sample (102) and direct the Raman light onto the at least one photodetector element (103a) and a support (109) for supporting the sample (102). The support (102) and light source (101) are arranged such that the light profile (110) can be moved relative to the sample (102) in order that the at least one photodetector element (103 a) receives Raman scattered light generated for different locations of the light profile (110) on the sample (102).
Abstract:
An example embodiment may include a hyperspectral analyzation subassembly configured to obtain information for a sample. The hyperspectral analyzation subassembly may include one or more transmitters configured to generate electromagnetic radiation electromagnetically coupled to the sample, one or more sensors configured to detect electromagnetic radiation electromagnetically coupled to the sample, and an electromagnetically transmissive window. At least one of the sensors may be configured to detect electromagnetic radiation from the sample via the window. The hyperspectral analyzation subassembly may include an analyzation actuation subassembly configured to actuate at least a portion of the hyperspectral analyzation subassembly in one or more directions of movement with respect to the sample.
Abstract:
A linear-motion stage that is angularly or radially symmetric or asymmetric, or monolithic may be used as the moving mechanism in a Fourier transform spectrometer. In embodiments, a linear-motion stage includes a base; a first multiple-arm linkage extending from the base to a first carriage attachment piece; and a second multiple-arm linkage extending from the first carriage attachment piece to the base. The first multiple-arm linkage constrains a motion of the first carriage attachment piece to motion in a first plane and the second multiple-arm linkage constrains the first carriage attachment piece to motion in a second plane, the first and second planes intersecting at a plane intersection line. The first and second multiple-arm linkages constrain the motion of the first carriage attachment piece along a carriage motion line.
Abstract:
The invention relates to a method for a marker-free demarcation of distinct areas of a tissue in vitro , comprising the steps of recording at least two different spectra and/or spectral images of the tissue, analyzing the recorded spectra and/or spectral images by a multivariate data analysis to segment the tissues into distinct areas of similar spectral signature, and classifying each area as physiological, pathological or dead according to its spectral signature.