Abstract:
Registration correction for optical tomographic imaging in three dimensions. An object of interest is illuminated to produce an image. A lateral offset correction value is determined for the image. An axial offset correction value is determined for the image. The lateral offset correction value and the axial offset correction value are applied to the image to produce a corrected file image.
Abstract:
A method and apparatus for characterizing and screening an array of material samples is disclosed. The apparatus includes a sample block having a plurality of regions for containing the material samples, a polarized light source to illuminate the materials, an analyzer having a polarization direction different than the polarization direction of the polarized light source, and a detector for analyzing changes in the intensity of the light beams. The light source, together with a polarizer, may include a plurality of light beams to simultaneously illuminate the entire array of materials with linearly polarized light so that characterization and screening can be performed in parallel. In addition, the materials in the sample block maybe subjected to different environmental conditions or mechanical stresses, and the detector analyzes the array as a function of the different environmental conditions or mechanical stresses.
Abstract:
A method and apparatus for characterizing and screening an array of material samples is disclosed. The apparatus includes a sample block having a plurality of regions for containing the material samples, a polarized light source to illuminate the materials, an analyzer having a polarization direction different than the polarization direction of the polarized light source, and a detector for analyzing changes in the intensity of the light beams. The light source, together with a polarizer, may include a plurality of light beams to simultaneously illuminate the entire array of materials with linearly polarized light so that characterization and screening can be performed in parallel. In addition, the materials in the sample block maybe subjected to different environmental conditions or mechanical stresses, and the detector analyzes the array as a function of the different environmental conditions or mechanical stresses.
Abstract:
A method and apparatus for characterizing and scanning an array of material samples in a combinatorial library in parallel is disclosed. The apparatus includes a sample block having a plurality of regions for containing the material samples, a polarized light source to illuminate the materials, an analyzer having a polarization direction oriented 90.degree. relative to the polarization direction of the polarized light source so as to filter out light intensities having the same polarization direction as the incident light beams from the light source after illuminating the material samples, and a detector for analyzing changes in the intensity of the light beams. In one aspect, the light source in combination with a polarizer, includes a plurality of light beams to simultaneously illuminate the entire array of materials with linearly polarized light such that the characterization can be performed quickly. In another aspect, the materials in the sample block are subjected to different environmental conditions wherein the detector analyzes the array as a function of those environmental conditions.
Abstract:
An Anger-type scintillation camera system fitted with a gamma ray filter between the object under study and the detector and an output signal filter of the signal funneling type which employs a non-linear array of signal filter windows to compensate for inherent non-linear spatial response characteristics in the camera system.
Abstract:
Presence or location of an object is detected or movement thereof is controlled by projecting light at the location where the object or the edge thereof is expected and detecting transmitted or reflected light by a photoelectric responsive device. The photoelectric responsive device is connected to a circuit which actuates either an indicator of the location of the object in the illuminated field or actuates mechanism for readjusting the position or direction of the movement of the object. The effect of variations in ambient or extraneous light or flashes of light is overcome by pulsing the projected light at a suitable rate and causing the photoelectric response circuit to be responsive only to electrical currents having the same pulse wave form as the light source with means for synchronizing the electric detector circuit with the light source.
Abstract:
Aspects of the present disclosure are directed to a method and a device for carrying out chemical, biochemical and/or immunochemical analyses of liquid samples, which are present in a sample store of an automatic analyzer, with the aid of liquid reagents, which are present in at least one reagent store of the analyzer. In one embodiment, a analyzer is disclosed including cuvettes for holding the liquid samples and reagents, the cuvettes are arranged in at least one stationary, linear cuvette array. The analyzer further has an optical measurement unit with a stationary light-supplying unit which has at least one light distributor device that feeds the light from a plurality of LED light sources emitting in a spectrally different manner in the UV/VIS/NIR wavelength range into the inlet windows of the individual cuvettes of the cuvette array. The optical measurement unit further includes a stationary detection unit assigned to outlet windows of the cuvettes and further includes a plurality of photodiodes.
Abstract:
A system, method and apparatus for taking a Raman spectrum of a sample is disclosed. In one embodiment, for example, an integrated Raman spectrometer is provided. In another embodiment, a portable Raman spectrometer is provided. In another embodiment, a Raman spectrometer is provided comprising a collimated beam tube for transmitting excitation radiation to an external optical system, such as a microscope, a telescope or a camera lens. In another embodiment, a method for correcting a Raman spectrum for background interference is provided. In yet another embodiment, a method for rejecting fluorescence in a Raman spectrometer is provided. A chemical reactor comprising a built-in Raman detector for monitoring a chemical reaction in a reaction chamber of the reactor is also provided.
Abstract:
An apparatus and method for correction of relative object-detector motion between successive views during optical tomographic imaging in three dimensions. An object of interest is illuminated to produce an image. A lateral offset correction value is determined for the image. An axial offset correction value is determined for the image. The lateral offset correction value and the axial offset correction value are applied to the image to produce a corrected file image.
Abstract:
A system, method and apparatus for taking a Raman spectrum of a sample is disclosed. In one embodiment, for example, an integrated Raman spectrometer is provided. In another embodiment, a portable Raman spectrometer is provided. In another embodiment, a Raman spectrometer is provided comprising a collimated beam tube for transmitting excitation radiation to an external optical system, such as a microscope, a telescope or a camera lens. In another embodiment, a method for correcting a Raman spectrum for background interference is provided. In yet another embodiment, a method for rejecting fluorescence in a Raman spectrometer is provided. A chemical reactor comprising a built-in Raman detector for monitoring a chemical reaction in a reaction chamber of the reactor is also provided.