Abstract:
The present invention relates to an apparatus (100) and, a method and a computer program for optical analysis of an associated tissue sample (116), the apparatus being adapted to determine a concentration of collagen and/or elastin with two independent methods. With two independent methods, the concentrations determined with each method may be held up against the other, and if the difference is too large a user may be informed that at least one of the measured values is not reliable. In a particular embodiment, the two independent methods are Diffuse Reflectance Spectroscopy (DRS) and fluorescence spectroscopy, and the absorption and scattering determined with DRS may be used when interpreting the fluorescence spectroscopy spectra so as to be able to obtain quantitative information regarding concentration of collagen and elastin from both methods. According to a specific embodiment, the apparatus further comprises an interventional device (112).
Abstract:
A method and device structure are provided which enable an archive sample to be collected and detached relative to a device within which a series of processes, such as PCR are being provided. A chamber structure and method of use are provided in which a controlled and precise volume is obtained by control of the relative resistance to flow through various channels.
Abstract:
Verfahren und Vorrichtung zur Bestimmung von Zustandsgrößen im Inneren eines Behälters (1) für verflüssigte Gase auf optischem Weg, besteht darin, dass von einer Beleuchtungseinheit (2) ausgehendes Licht in einem Lichtleiter (7, 9) zu einer Berührungsstelle (33) mit dem Inhalt des Behälters (1) gelangt, dort teilweise reflektiert und die Lichtstärke des reflektierten Lichtes von einem Bildsensor (4) gemessen und daraus eine Zustandsgröße ermittelt wird. Um ein umfassendes „Bild" der Zustandsgrößen im Behälter und dessen Inhaltes zu schaffen, sind mehrere Lichtleiter (29, 29') zu im Inneren des Behälters (1) verteilten Messpunkte (9.1, 9.2, 9.3,..., 9.n) bildenden Berührungsstellen (33) geführt. Aus den in diesen erhaltenen Messwerten werden örtlich zugeordnete Zustandsgrößen (Brechungsindex, Dichte, Temperatur etc) des Behälterinhaltes ermittelt und diese zusammen mit den räumlichen Koordinaten der Messpunkte (9.1, 9.2, 9.3,..., 9.n) im Behälter (1) ausgewertet. Die zugehörige Vorrichtung ist ebenfalls beschrieben.
Abstract:
The disclosure relates to a portable and/or handheld bioagent detector and methodology described herein that is based in part on advanced Raman Chemical Imaging ("RCI") technology. According to one embodiment of the present disclosure, the detection system may include a fiber array spectral translator ("FAST") and may also include a probe which may include a complementary metal oxide semiconductor (CMOS) camera. The probe alleviates the need to place the main instrument close to an unconfined release of a potentially hazardous material and facilitates analysis of a sample that is situated in a hard-to-reach location while minimizing contamination of the detector and operator.
Abstract:
The present invention provides a low profile fiber optic sensor including a fiber optic fan having a collecting end with a light-collecting portion, a terminal end, a core material extending from the collecting end to the terminal end and an outer cladding. The fiber optic fan may be made from a plurality of optical fibers or a light pipe. The light-collecting portion is formed into a pattern that has a shape with a first side and a second side. A light source is positioned on the first side of the pattern with an opaque light shield positioned about the light source. To enhance the performance of the sensor, an optical lens is coupled to the core material on the first side of the pattern to enhance detection of the light. The lens may be an array of microprisms, spheres or hemispheres.
Abstract:
The spectrum of light, inelastically scattered by a sample (16) is measured. The light is guided through a capillary (12) from and to the sample, at least in one of these directions, through the channel no inelastic scattering of light occurs which can form an interfering background when measuring on the sample. By guiding the light through the channel, inelastic scattering of this light is prevented and it becomes possible to guide scattered light back through the channel to spectral analysis equipment (14) without problems with inelastic scattering during the guidance of the light. Preferably, the light is guided through the channel of the capillary in both directions.
Abstract:
A multitasking optical fiber probe (10) for collecting dosimeter information from more than one position in a sample. The basic principle of the present invention involves using one or more different sensor zones (20,22,24,26,28,30) along the length of the fiber (14) each with a different photoactive constituent having a sufficiently unique emission spectra (spectral or temporal) to enable deconvolution of the emission spectra by the computer (46) and therefore correlation of the detected parameter with the position of the sensor zone along the length of the optical fiber. In the broadest form of the invention the probe is embodied by only one sensor zone located at some point along the length of the fiber spaced away from the end face of the fiber. More than one different photoactive constituent could be incorporated into a single sensor zone for measuring several factors in the vicinity of the sensor zone.