Abstract:
Methods and devices are disclosed which apply an excitation-emission matrix (EEM) to a heterogeneous, two-dimensional sample, allowing a considerably larger number of emitting, e.g. fluorescent, labels to be used simultaneously. This may be accomplished by employing a spectroscopic method of excitation-emission matrices which allows discrimination of species with similar emission spectra, and also allows positive identification of energy transfer between emitting species. The methods and devices may employ a novel excitation-light scanning technique which allows imaging of the emission from the heterogeneous sample both in two spatial dimensions (length and width) and in two spectral dimensions (excitation and emission wavelength). This light scanning technique maximizes the throughput of excitation light, increasing the sensitivity and hence the reading speed of the instrument.
Abstract:
A sensing device includes a transmission path, an electromagnetic-wave input unit through which an electromagnetic wave enters the transmission path, an electromagnetic-wave detector configured to detect the electromagnetic wave propagating through the transmission path, and a bent portion provided in the transmission path. The electromagnetic wave propagates through the transmission path while radiating to the periphery of the transmission path. The bent portion is provided in the transmission path for allowing an interaction to occur between a test subject and the electromagnetic wave in the transmission path. When the test subject is positioned relative to the bent portion, the electromagnetic-wave detector detects a change in the state of the electromagnetic wave caused by the interaction occurring between the test subject and the electromagnetic wave in the bent portion. The detected information provides a basis for obtaining information on the test subject.
Abstract:
A method for scanning a surface, consisting of focusing an array of optical beams using optics having an axis, so as to illuminate a region of the surface intercepted by the axis, such that each optical beam illuminates a portion of a respective sub-region within the region. The method further includes moving at least one of the array and the surface so as to cause a translation of the surface relative to the axis in a first direction. During the translation in the first direction, each of the optical beams is scanned over the respective sub-region in a second direction, which is different from the first direction.
Abstract:
A light fluctuation measuring apparatus, comprising a parameter setting unit 2 which sets parameters of a microscopic image obtaining unit and/or parameters of a light emission measuring unit used for observing light emission in a desired area of a sample in time series, a parameter storage 4 which stores parameters, a mode selector 3 which selects one of a microscopic image obtaining mode for obtaining a microscopic image by a microscopic image obtaining unit, and a light emission measuring mode for observing light emission in a desired area by a light emission measuring unit, and a control unit 1 which reads parameters stored in the storage 4 based on a selected mode, inputs the parameter to a microscopic image obtaining unit or a light emission measuring unit, and controls these units.
Abstract:
A method for scanning a surface, consisting of focusing an array of optical beams using optics having an axis, so as to illuminate a region of the surface intercepted by the axis, such that each optical beam illuminates a portion of a respective sub-region within the region. The method further includes moving at least one of the array and the surface so as to cause a translation of the surface relative to the axis in a first direction. During the translation in the first direction, each of the optical beams is scanned over the respective sub-region in a second direction, which is different from the first direction.
Abstract:
A portal for security screening of transport passengers includes a THz trans-receiver. In one example of the portal, the trans-receiver includes a small-spot, reflective scanning arrangement including a single detector in a heterodyne receiver configuration. In another example, the trans-receiver includes a large-beam reflective scanning arrangement with the trans-receiver in a synthetic aperture radar (SAR) configuration.
Abstract:
A scanning microscope includes: a light source; an optical system that irradiates light from the light source onto a sample while two-dimensionally scanning the light, and collects light from the sample; a photo-detector that receives the light from the sample which has been collected by the optical system, and converts the light thus received into a brightness signal; an integrating circuit that integrates the brightness signal from the photo-detector for each pixel; and an image forming circuit that forms an image of the sample based upon the brightness signal of each pixel integrated by the integrating circuit. And the integrating circuit includes a plurality of integrators for integrating the brightness signal from the photo-detector and an adder for adding output signals from the plurality of integrators, and integrates the brightness signal while sequentially switching the plurality of integrators for each of a plurality of periods obtained by dividing a period corresponding to a pixel.
Abstract:
Methods for evaluating a pixel signal produced during scanning of a chemical array are provided. In general, the methods involve producing at least two analog signals for a pixel using a multi-gain signal detection system, integrating at least one of these signals, and outputting data representing the pixel. Also provided are systems and computer program products for performing the subject methods, and an array scanner containing these systems and program products.
Abstract:
Methods and devices are disclosed which apply an excitation-emission matrix (EEM) to a heterogeneous, two-dimensional sample, allowing a considerably larger number of emitting, e.g. fluorescent, labels to be used simultaneously. This may be accomplished by employing a spectroscopic method of excitation-emission matrices which allows discrimination of species with similar emission spectra, and also allows positive identification of energy transfer between emitting species. The methods and devices may employ a novel excitation-light scanning technique which allows imaging of the emission from the heterogeneous sample both in two spatial dimensions (length and width) and in two spectral dimensions (excitation and emission wavelength). This light scanning technique maximizes the throughput of excitation light, increasing the sensitivity and hence the reading speed of the instrument.
Abstract:
The present invention is directed towards a channel power monitor for monitoring channel power levels for each of N signal channels. The value of each channel power level is designated as p(nulli), where nulll is a channel parameter that characterizes each channel. An embodiment of the invention includes a variable channel attenuator having M attenuation profiles where MnullN, and where a k-th attenuation profile is characterized as a function of the channel parameter nulll by Ak(nulll). This embodiment also includes a detector for measuring a k-th integrated attenuated power level, the value of which is represented by Pk. An analysis unit receives all of the values Pk of the integrated attenuated power levels and thereupon derives the values p(nulll) of the channel power levels by solving a set of linear equations.