Abstract:
Die Erfindung betrifft eine Vorrichtung zur Aufnahme eines Hyperspektralbildes eines Untersuchungsgebietes mit - einer Lichtquelle (3) zur Bestrahlung des Untersuchungsgebietes, - einem Eingangsobjektiv (2) zur Erzeugung eines Bildes des Untersuchungsgebietes in einer Bildebene, - einem Spektrometer (11), das eine in der Bildebene angeordnete schlitzförmige Blende (7) zur Selektion eines schlitzförmigen Bereichs des Bildes, ein dispersive Element (9), das so aufgebaut und angeordnet ist, dass die dispersive Auffächerung des durch die Blende hindurch tretenden Lichts in einer von der Längsrichtung der Blende verschiedenen Richtung erfolgt, und einen Kamerasensor (10) zur Aufnahme des Beugungsbildes aufweist, und - einer Datenverarbeitungseinrichtung zur Aufnahme der Kamerasensorsignale als eine Vielzahl von Spektren mit jeweils zugeordneter Ortskoordinate x entlang der Längsrichtung X der Blende, - wobei die Vorrichtung dazu eingerichtet ist, in einer von der Längsrichtung X verschiedenen zweiten Richtung Y aufeinanderfolgende schlitzförmige Bereiche des Bildes des Untersuchungsgebietes mit zugeordneter Ortskoordinate y aufzunehmem, - dadurch gekennzeichnet, dass das Spektrometer (11) in der zweiten Richtung Y verfahrbar relativ zum Eingangsobjektiv (2) gelagert ist, eine Antriebseinrichtung zum gesteuerten Verfahren und Einstellen der Position des Spektrometers (11) in der zweiten Richtung Y vorhanden ist und dass die Datenverarbeitungseinrichtung dazu eingerichtet ist, das Spektrometer (11) schrittweise zu verfahren, um so sukzessive aufeinanderfolgende schlitzförmige Bereiche mit Spektren mit zugeordneten Ortskoordinaten x, y aufzunehmen und zu dem Hyperspektralbild zusammenzusetzen.
Abstract:
A wireless near-infrared spectrometry sensor includes a light source for emitting near-infrared energy into tissue and a light receiver for receiving the near- infrared energy after it exits the tissue. The sensor may include a portable energy source for supplying energy to the light source. A processing module may control the light source and process readings in connection with the light source. A wireless transceiver may be coupled to the processing module for at least one of transmitting and receiving information, wherein the light source emits near-infrared energy at predetermined intervals in order to conserve energy in the portable energy source. The portable energy source may include at least one of a battery, a capacitor, a thermoelectric generator, a kinetic energy transducer, electricity derived from RF energy, and any combination thereof. The sensor may further include a substrate for support and which may be part of a sterile bandage.
Abstract:
An optical filter includes a stationary substrate and a movable substrate disposed so as to be opposed to each other, a first reflecting film disposed on a movable substrate side of the stationary substrate, a second reflecting film disposed on a stationary substrate side of the movable substrate, and opposed to the first reflecting film, a first protective film disposed so as to overlap the first reflecting film, and having a light transmissive property and an electrical conductivity, a second protective film disposed so as to overlap the second reflecting film, and having a light transmissive property and an electrical conductivity, a first terminal to be connected to the first protective film, and a second terminal to be connected to the second protective film, and connection between the first terminal and the second terminal is electrically switched.
Abstract:
A spectroscopic imaging device adjusting method adjusts a relative arrangement relationship among a collimating lens, a diffraction grating, a condensing lens and an array type light receiving part so as to maximize the value of the following expression (1) for an output values f n from respective light receiving sensors P n when monochromatic light is inputted to a spectroscopic imaging device, wherein α > 1 and n is each integer equal to or larger than 1 and equal to or smaller than N. [Expression 1]
Abstract:
Various embodiments include systems and methods to provide selectable variable gain to signals in measurements using incident radiation. The selectable variable gain may be used to normalize signals modulated in measurements using incident radiation. The selectable variable gain may be attained using a number of different techniques or various combinations of these techniques. These techniques may include modulating a modulator having modulating elements in which at least one modulating element acts on incident radiation differently from another modulating element of the modulator, modulating the use of electronic components in electronic circuitry of a detector, modulating a source of radiation or combinations thereof. Additional apparatus, systems, and methods are disclosed.
Abstract:
Systems and methods for standardizing one or more fluorescence scanning instruments to a reference system by separating the effects of drift and normalization. In an embodiment, a drift image comprising an image of a drift reference slide is captured by a system to be standardized. A drift measurement is calculated using the drift image. A first normalization image comprising an image of a normalization slide is also captured by the system to be standardized. A reference normalization image, also comprising an image of the normalization slide, is captured by a reference system. The first normalization image is compared to the reference normalization image to determine a gamma value and offset value for the system to be standardized.
Abstract:
Fast focusing methods and devices for multi-spectral imaging are disclosed. The method comprising selecting one of a plurality of imaging channel as a reference channel, adjusting rotation positions of a stepper motor, calculating focus measures corresponding to all rotation positions of the stepper motor, and obtaining a first distribution curve; in each of the other imaging channels, selecting at least three rotation positions of the stepper motor, matching focus measures at the selected rotation positions with the first distribution curve to obtain a second distribution curve and a offset value between the first distribution curve and the second distribution curve, and calculating a clear focusing position of the imaging channel to be focused according to the offset value; performing a fine-tuning focusing, and thereby obtaining a more precise clear focusing position. A fast focusing for multi-spectral imaging and obtain clear multi-spectral images is obtained.
Abstract:
The invention relates to simplified portable method of measuring light sources by limiting the number of parameters to measured for example to one plane of radiation where know characteristics are preselected or default selected to be used to calculated combined output. Further more is light measurements combined with power calculation and control where phase of supply current is used to obtain light source flickering, determine dimmable. Further more can an imaging recording device be used to further enhance the measurements.