Abstract:
The present invention provides a luminescence sensor (20) comprising at least one chamber (22) and at least one optical filter formed by at least a first conductive grating (11), the at least first conductive grating (11) comprising a plurality of wires (12), wherein at least one of the wires (12) of the at least first conductive grating (11) is linked to a temperature control device for controlling the temperature of at least one chamber (22) in the sensor.
Abstract:
Method and arrangement for changing the spectral composition and/or intensity of illumination light and/or specimen light in an adjustable manner, wherein a spatial separation into radiation components of different polarization is carried out with a first polarizing device, a spectral, spatial splitting of at least one radiation component is carried out with first dispersion device, the polarization state of at least one part of the spectrally spatially split radiation component is changed, and a spatial separation and/or combination of radiation components of different polarization are/is carried out by a second polarizing device, wherein a spatial combination of radiation components which are changed and not changed with respect to their polarization state is advantageously carried out by a second dispersion device.
Abstract:
A spectrometry device comprising at least one wavefront-dividing interferometer comprising at least two unbalanced arms and at least one air wedge, a device for imaging interference fringes, an imaging sensor of the fringes and a processor that processes a signal derived from the sensor.
Abstract:
A system for detecting atmospheric contamination, the system comprising a laser operable to generate an infrared light beam comprising a longitudinal component and a transverse component, the laser remote from the atmospheric contamination, and a processor operable to process a flouresence resulting from contact between the atmospheric contamination and an ultraviolet light being generated from the longitudinal and transverse components of the infrared light of the laser, wherein the processor determines the identity of the fluorescence by comparing the fluorescence to known fluorescence.
Abstract:
A fluorescence distribution image of each fluorescent agent can be acquired from a fluorescence image that has been captured in a mixed state so as to improve the diagnosability of cancer cells. An endoscope system comprises: a light source section for selectively irradiating two or more types of excitation lights having different spectral characteristics so as to excite two or more types of fluorescent agents having different optical characteristics; an imaging section provided on a part to be inserted into a body cavity, and having a light-receiving sensitivity in the wavelength bands of the two or more types of fluorescence radiated from the observation target by respective types of excitation lights; a storage section for storing relation information between the fluorescence intensity and the concentration of each of the fluorescent agents; a concentration information computing section for computing concentration information of each of the fluorescent agents on the basis of the fluorescence intensities of two or more images captured by the imaging section and the relation information stored in the storage section, and outputting the concentration information; and a mode switching section capable of switching between a first fluorescence observation mode in which at least one of the fluorescence intensity images acquired by the imaging section is presented, and a second fluorescence observation mode in which the concentration information of each of the fluorescent agents computed by the concentration information computing section is presented.
Abstract:
The present invention provides systems and methods for measuring an analyte in a medium without exposing the medium to contamination. The systems and methods employ a novel combination of a small sensor device embedded in a Luer cap and capable of wirelessly transmitting data to a reading device.
Abstract:
A method used to detect and identify biological substances suspended in air in the form of aerosols or clouds including generating a remote infrared light beam directed toward the atmospheric contamination, producing an ultraviolet light beam from the infrared light beam by compression via the air through which the IR beam travels, and producing fluorescence of the atmospheric contamination, when the generated ultraviolet light contacts the atmospheric contamination. The fluorescent signals are then processed in order to identify the nature of the atmospheric contamination.
Abstract:
Systems and method for detecting and measuring light emitted from a sample and having a large dynamic range, e.g., a range of luminous intensity covering six or more orders of magnitude, that may be difficult to fully detect using a single detector with a limited detection range. Simultaneous measurement of the emitted light in two intensity ranges is performed using two detectors, e.g., one including a photomultiplier tube (PMT) and the other including a solid state detector such as a photodiode. A beam splitting element directs light emitted from a sample under investigation to both detectors simultaneously such that a portion of the light impinges on the first detector and a second portion of the light impinges on the second detector. A processor receives output signals from the two detectors and provides an output representing the luminous intensity of the sample over a detection range greater than the detection range of each individual detector, thereby providing a detection system having an enhanced dynamic range.
Abstract:
A time-resolved, fluorescence spectrometer makes use of a RadiaLight® optical switch and no dispersive optical elements (DOE) like gratings. The structure is unique in its compactness and simplicity of operation. In one embodiment, the spectrometer makes use of only one photo-detector and an efficient linear regression algorithm. The structure offers a time resolution, for multiple species measurements, of less than 1 s. The structure can also be used to perform fluorescence correlation spectroscopy and fluorescence cross-correlation spectroscopy.
Abstract:
A filter set for observing fluorescent radiation in biological tissue includes at least one illumination filter and at least one observation filter. The at least one illumination filter is arrangeable in an illumination system of an optical system. The at least one least one observation filter is arrangeable in an imaging system of the optical system.