Abstract:
Optical spectroscopy system and method possessing spectral selectivity sufficient to distinguish isotopic line of the metal of interest. Each of the light beams, counter-propagating through vial with vapor of the sample, has been originated from the same light output of the laser source and modulated at a corresponding judiciously-determined frequency. The light-output, in turn, possesses a carrier frequency and two side-band frequencies defined with respect to a mean value of excitation frequencies of isotopes in the vapor.
Abstract:
An arrangement for optical measurement of at least one process variable in a medium, comprising: at least one light source; at least one light receiver; an optical sensor element at least one data processing unit; and a light conductor. The light conductor connects the light source with the optical sensor element and the optical sensor element with the light receiver. The light conductor is embodied with at least three arms, wherein the first arm is arranged at the light source, the second arm is arranged at the light receiver and the third arm is arranged at the optical sensor element first arm and the second arm combine to form the third arm. The invention relates further to a measuring device comprising an above described arrangement.
Abstract:
A method and apparatus for dating a body sample, such as blood, includes taking at least one spectroscopic measurement of the sample at at least two predetermined positions in the spectrum having spectral characteristics corresponding to at least two predetermined substances present in the sample that have a time varying relationship with each other. A measured relative concentration of each of the predetermined substances is then determined from the measurement, and the measured relative concentrations of the two predetermined substances is compared with a known variation of the relative concentrations of the two predetermined substances over time. A good fit of the measured relative concentrations to the known variation of the relative concentrations is then determined, so as to provide an indication of the age of the sample. Alternatively, instead of measuring the relative concentrations of each of the predetermined substances, the rate of change of the relative concentrations is determined.
Abstract:
An inspection station identifies defects such as artifacts (e.g., dust, hair, particles) in the sealing areas of sealed sterile packages. A multi-head optical scanner can include at least two fiber optic sensors each comprised of a bundle of optical fibers arranged into a linear face coupled to an image processing module and oriented towards a scanning area of sealed packages moving through a conveyance system. An image processing module can analyze input from the at least two fiber optic sensor arrangements to identify artifacts in the sealing areas of the sealed packages.
Abstract:
The embodiments herein relate to a system (100) for analyzing a fluid (103). The system (100) comprises a light source (110) configured to emit light for transmission through a first optical transmission means (107a) to a measurement device (105). The measurement device (105) comprises at least a part of the fluid (103) and is configured to be illuminated by the emitted light. The system comprises a second optical transmission means (107b) configured to transmit shadowed or reflected light from the fluid (103) when the measurement device (105) is illuminated to an image capturing device. The image capturing device (113) is configured to capture an image of the fluid (103) in the measurement device (105) based on the transmitted information about the fluid (103). The light source (110) and the one or more image capturing device (113) are remotely arranged from the at least one measurement device (105).
Abstract:
An arrangement for optical measurement of at least one process variable in a medium, comprising: at least one light source; at least one light receiver; an optical sensor element at least one data processing unit; and a light conductor. The light conductor connects the light source with the optical sensor element and the optical sensor element with the light receiver. The light conductor is embodied with at least three arms, wherein the first arm is arranged at the light source, the second arm is arranged at the light receiver and the third arm is arranged at the optical sensor element first arm and the second arm combine to form the third arm. The invention relates further to a measuring device comprising an above described arrangement.
Abstract:
An inspection station identifies defects such as artifacts (e.g., dust, hair, particles) in the sealing areas of sealed sterile packages. A multi-head optical scanner can include at least two fiber optic sensors each comprised of a bundle of optical fibers arranged into a linear face coupled to an image processing module and oriented towards a scanning area of sealed packages moving through a conveyance system. An image processing module can analyze input from the at least two fiber optic sensor arrangements to identify artifacts in the sealing areas of the sealed packages.
Abstract:
Apparatus for detecting optical radiation emitted from an array of spots on an object. The apparatus includes a plurality of light guides having respective input ends and output ends, with the input ends ordered in a geometrical arrangement corresponding to the array of the spots. Relay optics collect and focus the optical radiation from the object onto the input ends such that each input end receives the optical radiation from a corresponding one of the spots. Multiple detectors and each coupled to receive the optical radiation from an output end of a respective one of the light guides.
Abstract:
The present invention pertains to a method and apparatus for total hemoglobin measurement. A modulated optical signal based on a digital code sequence is transmitted to human tissue. A temporal transfer characteristic is determined from the modulated optical signal. Total hemoglobin is determined based on the temporal transfer characteristic.
Abstract:
The present invention pertains to a method and apparatus for cerebral oximetry. A modulated optical signal based on a digital code sequence is transmitted to the human brain. A temporal transfer characteristic is derived from the modulated optical signal. Oxygen level in the brain is determined based on the temporal transfer characteristic.