Abstract:
An ultraviolet absorption hygrometer is provided including a source of pulsed ultraviolet radiation for providing radiation in a first wavelength region where water absorbs significantly and in a second proximate wavelength region where water absorbs weakly. Ultraviolet radiation in the first and second regions which has been transmitted through a sample path of atmosphere is detected. The intensity of the radiation transmitted in each of the first and second regions is compared and from this comparison the amount of water in the sample path is determined.
Abstract:
A multi-wavelength time-sharing apparatus usable in various different configurations of optical measuring equipment to provide a plurality of time-shared optical channels and including appropriate circuitry. The apparatus employs a turbine-driven filter wheel having a shaft position-encoding arrangement consisting of a hollow shaft portion which is internally illuminated. The hollow shaft portion has two sets of spaced apertures cyclically communicating with respective angularly spaced pairs of externally fixedly mounted phototransistors which are sequentially illuminated as the shaft portion rotates and which produce timing pulses which drive Schmitt triggers, which, in a typical embodiment, in turn produce pulses compatible with a logic circuit employed to decode the phototransistor signals into triggers for driving a 4-channel switched gain equalizer, a dark current clamp, and detector gates. Appropriate selection of the signals enables the instrument to function as a fluorometer or a spectrophotometer.
Abstract:
There is set forth herein a light energy exciter that can include one or more light sources. A light energy exciter can emit excitation light directed toward a detector surface that can support biological or chemical samples.
Abstract:
The present invention provides a multi-channel fluorescence detecting system for detecting a plurality of fluorescence labeled analytes. The multi-channel fluorescence detecting system comprises a light source, a light filter device, a dual branch light guide tube, and a detector. The light source comprises a plurality of sub light sources for respectively providing an excitation light. The plurality of sub light sources are a plurality of single color Light emitting diodes (LEDs) which can be selectively turned on or off. The light source generates a plurality of lights with full width at half maximum (FWHM) wavelengths formed in a non-overlap manner. With the disposition of the plurality of sub light sources, the accuracy for detecting the specific analytes is raised, the light flux with a specific wavelength band is effectively raised (without raising the light flux of the full wavelength band), the structure is simplified, and the manufacturing cost is decreased.
Abstract:
A flow cell includes a transparent planar member having a first principal surface and a second principal surface opposite to the first principal surface. The planar member has a through-hole that has a circular cross-sectional shape and that penetrates through the first principal surface and the second principal surface. The flow cell further includes a first lens element having a through-hole that has a circular cross-sectional shape. The first lens element is disposed on the first principal surface of the planar member such that the through-hole in the planar member communicates with the through-hole in the first lens element. The flow cell further includes a second lens element having a through-hole that has a circular cross-sectional shape. The second lens element is disposed on the second principal surface of the planar member such that the through-hole in the planar member communicates with the through-hole in the second lens element.
Abstract:
In a sample analyzing apparatus, an injector assembly injects a reagent onto a sample, and luminescent light from the sample is transmitted to a detector. The assembly may be movable toward and away from the sample. The assembly may include one or more needles that communicate with one or more reservoirs supplying reagent or other liquids. The assembly may include a light guide for communicating with the detector. A cartridge may be provided in which the assembly, one or more reservoirs, and one or more pumps are disposed. The cartridge and/or the apparatus may be configured for enabling rinsing or priming to be done outside the apparatus. The cartridge and/or the apparatus may include one or more types of sensors configured for detecting, for example, the presence of liquid or bubbles in one or more locations of the apparatus and/or the cartridge.
Abstract:
A flow cell includes a transparent planar member having a first principal surface and a second principal surface opposite to the first principal surface. The planar member has a through-hole that has a circular cross-sectional shape and that penetrates through the first principal surface and the second principal surface. The flow cell further includes a first lens element having a through-hole that has a circular cross-sectional shape. The first lens element is disposed on the first principal surface of the planar member such that the through-hole in the planar member communicates with the through-hole in the first lens element. The flow cell further includes a second lens element having a through-hole that has a circular cross-sectional shape. The second lens element is disposed on the second principal surface of the planar member such that the through-hole in the planar member communicates with the through-hole in the second lens element.
Abstract:
A device for determining a concentration of at least one gas in a sample gas stream includes an analysis chamber, a detector, and a connecting channel. The analysis chamber is configured to have the sample gas stream and a reaction gas stream be introduced therein. The sample gas stream and the reaction gas stream are mixed to a gas mixture which reacts so as to emit an optical radiation. The detector is configured to measure the optical radiation. The connecting channel is configured to connect the analysis chamber to the detector. The connecting channel is configured as a light conductor extending from the analysis chamber to the detector.
Abstract:
Proposed is a defect inspection method whereby: illuminating light having a substantially uniform illumination intensity distribution in one direction of a sample surface irradiated on the sample surface; multiple scattered light components, which are output in multiple independent directions, are detected among the scattered light from the sample surface and multiple corresponding scattered light detection signals are obtained; at least one of the multiple scattered light detection signals is processed and the presence of defects is determined; at least one of the multiple scattered light detection signals that correspond to each of the points determined by the processing as a defect is processed and the dimensions of the defect are determined; and the position and dimensions of the defect on the sample surface, at each of the points determined as a defect, are displayed.
Abstract:
A method and an apparatus for imaging a biologic sample is provided. The apparatus includes at least one light source, at least one lens array, at least one image detector, a positioning system, and an image processor. The lens array has a plurality of lengthwise extending rows, which rows are successively arranged in a widthwise direction. Each row has a plurality of micro lenses, with each micro lens having a resolution field. Each micro lens is adapted to receive light from the illuminated region of the sample and to produce a beam of light. Each row includes a first micro lens and the first micro lens in each successive row is offset from the first micro lens in the previous row by a predetermined amount extending in the lengthwise direction. The offset between successive rows aligns the resolution fields of the micro lenses to collectively create a continuous resolution field across the length of the lens array. The positioning system moves the lens array and image detector relative to the sample, or vice versa, or both. The image processor produces an image signal indicative of the illuminated region of the sample produced from data signals from the image detector.