Abstract:
The present invention is directed to an Interferometer (100) comprising a source (110) of a primary energy beam (111), a first reflector (120) being provided static such that a first path length from the source (110) to the first reflector (120) is constant, a reflector (1) with an energy beam reflecting surface (20) being provided by an outer surface of a sonotrode (10), wherein the reflector (1) is provided to oscillate such that a second path length from the source (110) to the reflecting surface (20) is variable, a target (140), a means for splitting an energy beam (160) arranged such that it divides the primary beam (111) into a first energy beam (112) incident onto the first reflector (120), and a second energy beam (113) incident onto the reflector (1) adapted to oscillate, and a means for combining energy beams (170) arranged such that it combines a third energy beam (114) reflected from the first reflector (120) and a fourth energy beam (115) reflected from the reflector (1) adapted to oscillate incident onto the target (140). Further provided is an infrared Fourier transform spectrometer (200).
Abstract:
An apparatus comprises a coherent source (103) radiating coherent light to a sample, an excitation source (101) radiating excitation light to the sample, a scanning unit (102) controlling at least the radiated location and/or radiated shape of the excitation light on the sample, a signal separation unit (106) dividing a mixed signal from the sample into a coherent signal and spectroscopic signal, at least one detector (109,112) measuring the spectroscopic signal and coherent signal, at least one processing unit (110, 113) converting the spectroscopic signal into spectroscopic data and converting the coherent signal into a coherent image, and a feedback unit (118) controlling the scanning unit (102) based on the coherent image.
Abstract:
The invention relates to the detection of state conditions pi(x) of an object (1) to be examined comprising the steps of providing a plurality of variables from measurements of the object (1), wherein the variables can be illustrated by means of a predetermined system function as a function of an object response S(pi,?) by the object (1) and of spectral measurement conditions Lr(?) of the measurements, wherein the object response S(pi, ?) contains the state conditions pi as parameters, and the calculation of the state conditions pi(x) from the variables, wherein the calculation of the state conditions pi(x) comprises an adjustment of the parameters of the object response S(pi,?) such that the variables are represented by the system function. The invention further relates to a measurement device (100) for detecting state conditions pi(x) of an object (1) to be examined. A method for measuring the fluorescence of a pigment in the eye (1) comprises the steps of illuminating the eye (1) using excitation light in a predetermined excitation wavelength range (?ex), measuring a first fluorescence signal (S1) in a first emission wavelength range (?em,1), measuring a second fluorescence signal (S2) in a second emission wavelength range (?em,2), and detecting an autofluorescence signal (S) of the pigment from the first and second fluorescence signals (S1, S2). The invention further relates to a measuring device (100) equipped for the measurement of the fluorescence of a pigment in the eye (1) and comprising an illumination device (10) and a detection device (20).
Abstract:
A fluorescence detection system for testing a sample having at least one fluorophore. The fluorescence detection system comprises a white light generation system outputting a white light pulse. The white light pulse has a first frequency range and a first time duration. The white light pulse excites the at least one fluorophore of the sample to emit a fluorescence. The fluorescence has a second frequency range and a second time duration, wherein the first time duration is less than the second time duration. A time-resolving detector receives the fluorescence and at least a portion of the white light pulse and separates the fluorescence from the portion of the white light pulse.
Abstract:
Light dispersing device comprising a slit element having a slit for exposure to electromagnetic radiation, wherein the slit element is configured and disposed for turning the slit between at least two positions. The light dispersing device is used together with a streak camera, whereby in a first position the slit is adjusted to influence the temporal resolution of the streak camera and in a second postion the slit is adjusted to influence the spectral resolution of the streak camera.
Abstract:
An FT-IR microscope is operated in association with a scanning spectrometer in such a way that incremental movement of the movable stage of the microscope is synchronised with the scanning spectrometer. This minimises delays in processing time.
Abstract:
Light from an object (152) moving through an imaging system (154) is collected, dispersed, and imaged onto a time delay integration (TDI) detector (148) that is inclined relative to an axis of motion of the object, producing a pixilated output signal. In one embodiment, the movement of the image object over the TDI detector (148) is asynchronous with the movement of the output signal producing an output signal that is a composite of the image of the object at varying focal point along the focal plane. In another embodiment, light from the object is periodically incident on the inclined TDI, producing a plurality of spaced apart images and corresponding output signals that propagate across the TDI detector (148). The inclined plane enables images of FISH probes or other components within an object to be produced at different focal point, so that the 3D spatial relationship between the FISH probes or components can be resolved.
Abstract:
A FTIR (100) spectrometer is used to illuminate the sample library in either step scan or rapid scan mode and IR light(s) emitted by the combination library is recorded by a focal plane array. The Fourier transform of the measured data is then taken.
Abstract:
A spectrometer (10) includes a two-dimensional array of modulatable microm-irrors (18), a detector (20), and an analyzer (22). The micro-mirrors are positioned for receiving individual radiation components forming a part of a radiation source. The micro-mirrors are modulated at different modulation rates in order to reflect individual radiation components at known and different modulation rates. The micro-mirrors combine a number of the reflected individual radiation components and reflect them to the detector. The detector receives the combined radiation components and creates an output signal. The analyzer is coupled to the detector to receive the output signal and to analyze at least some of the individual radiation components making up the combined reflection. By using a micro-mirror array that modulates the radiation components at different rates, all of the radiations components can be focused onto a single detector to maximize the signal-to-noise ratio of the detector.
Abstract:
A system for providing real-time control of a process that is monitored at a plurality of process locations by spectrometric techniques. The system utilizes an imaging spectrometer having an optical image input and a spectral image output. A plurality of modules are employed; one module is disposed in each process location. Each module has an illumination source for illuminating such location; a collector for collecting light that has been scattered at such location and directing such light to a collector output; and an optical fiber arranged to provide optical communication from the collector output to a pixel location of the optical image of the imaging spectrometer. In addition an optical transducer is placed in communication with the spectral image output of the imaging spectrometer. The optical transducer provides as an output, spectral data, associated with each pixel location of the optical image input and therefore associated with each process location, for the purpose of process control.