Abstract:
A device and method are provided for use with a noninvasive optical measurement system, such as a thermal gradient spectrometer, for improved determination of analyte concentrations within living tissue. In one embodiment, a wearable window is secured to a patient's forearm thereby isolating a measurement site on the patient's skin for determination of blood glucose levels. The wearable window effectively replaces a window of the spectrometer, and thus forms an interface between the patient's skin and a thermal mass window of the spectrometer. When the spectrometer must be temporarily removed from the patient's skin, such as to allow the patient mobility, the wearable window is left secured to the forearm so as to maintain a consistent measurement site on the skin. When the spectrometer is later reattached to the patient, the wearable window will again form an interface between the spectrometer and the same location of skin as before.
Abstract:
A portable system and method for measuring the concentration of multiple chemical or biological substances where an onsite analysis of such substances is needed. The new and original handheld sensor system uses a disposable optical test element and a spectroscopic detector that measures the test element response to specific analytes through a change in light absorbance, luminescence, and other forms of light-based response. In this way, reflection light intensities indicative of the test element response can be used to measure the concentration of the target analytes. The sensor system is also capable of being interfaced to an information processing unit or computer so that analytical data can be manipulated or stored electronically.
Abstract:
PROBLEM TO BE SOLVED: To provide a PCR (polymerase chain reaction) equipment being an optical equipment for quantitative monitoring of replicative DNA which is improved in a dynamic range, capable of automatically selecting the exposure time for expanding a dynamic range, capable of automatic drift adjustment, easy to operate, relatively low price, and easy to change the optical system for storing a different fluorescence dye. SOLUTION: The equipment includes a light source, a light guide means for guiding a light beam, an optical detector, and a means for processing a data signal. The light source emits source beam containing at least one frequency of primary excitation frequency capable of making fluorescence emit with emission frequency. A 1st means is so arranged as to activate an excitation beam of excitation frequency while receiving the source beam. A 1st focus means is arranged to focus the excitation beam in each suspension to make the primary dye emit emission beams with intensity indicating the emission frequency and the DNA concentration of each suspension. A focus means receives an emission beam and makes it pass through. A 2nd means is arranged to receive the emission beam to pass through the emission beam of emission frequency to the other focus means which focuses the emission beam on the detector. The detector generates a primary data signal representing the emission beam and generates the concentration corresponding to the DNA of each small bottle. The processor displays the concentration of DNA by acquiring the primary data signal. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a system capable of solving the problems encountered by spatial non-uniformities. SOLUTION: An apparatus and method for fluorescent detection in biological samples are provided in which non-uniformities in the emitted light due to the optical systems rather than the specimens are corrected by using special optical elements. The apparatus includes a light source (105), illuminating a dichroic beam splitter (110) which reflects excitation light via a first optical element (130) onto a sample region (120) including a tray of samples (122). The emitted light is redirected to a detector (125) through the first optical element (130) and the beam splitter (110). The first optical element (130) collimates and reduces non-uniformities in the emission light. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
MIR spectroscopy systems comprising hierarchical spectral dispersion that enables fine spectral resolution and high sensitivity spectroscopy are disclosed. Hierarchical spectral dispersion is derived by employing at least two diffractive lens arrays, located on either side of a test sample, each receiving input radiation having an input spectral range and distributing the input radiation into a plurality of output signals, each having a fraction of the spectral range of the input radiation. As a result, the signal multiplication factor of the two arrays is multiplied in a manner that mitigates the propagation of wavelength harmonics through the system. In some embodiments, an emitter array comprising a plurality of spectrally selective emitters provides the input MIR radiation to a spectroscopy system. In some embodiments, spectrally selective detectors are used to detect narrow spectral components in the radiation after they have passed through the test sample.
Abstract:
An optical instrument monitors PCR replication of DNA in a reaction apparatus having a temperature cycled block with vials of reaction ingredients including dye that fluoresces in presence of double-stranded DNA. A beam splitter passes an excitation beam to the vials to fluoresce the dye. An emission beam from the dye is passed by the beam splitter to a CCD detector from which a processor computes DNA concentration. A reference strip with a plurality of reference emitters emit reference beams of different intensity, from which the processor selects an optimum emitter for compensating for drift. Exposure time is automatically adjusted for keeping within optimum dynamic ranges of the CCD and processor. A module of the beam splitter and associated optical filters is associated with selected dye, and is replaceable for different dyes.