Abstract:
Pulse laser light L transmitted through a laser light transmission optical fiber 16 to an optical system unit 13 passes through a distribution reflecting mirror 27 and is condensed by a condenser lens group 30. The condenser lens group 30 irradiates the condensed laser light onto an analysis object 12. The fluorescence F emitted as a result of the irradiation of the pulse laser light L onto the analysis object 12 is condensed by the condenser lens group 30 and is reflected by the distribution reflecting mirror 27. The optical system unit 13 transmits the fluorescence F reflected by the distribution reflecting mirror 27 through an fluorescence transmission optical fiber 17 to a fluorescence measuring instrument. The fluorescence measuring instrument determines the quantity of elements included in the analysis object 12 on the basis of the fluorescence F.
Abstract:
A method and apparatus is disclosed for multi-mode spectral imaging. In one embodiment, the present invention comprises the steps of illuminating an object with (101) with a modified illumination profile, producing a reflected, transmitted or fluorescence image, scanning the object (104), and re-imaging (105) the reflected, transmitted or fluorescence light after modifying the light's optical state. The present invention preferably works in conjunction with other imaging systems to provide both high-spectral resolution images with lower temporal resolution and multiple image acquisition with high temporal resolution.
Abstract:
La présente invention a pour objet un dispositif de multiplexage permettant d'amener en alternance à une entrée d'un appareil de mesure les flux lumineux divergents provenant d'au moins deux moyens de propagation ou de transmission de lumière présentant en section des formes et des dimensions identiques, au moins au niveau de leurs sorties. Dispositif caractérisé en ce qu'il est principalement constitué, d'une part, par un obturateur mobile (4) pouvant présenter au moins deux positions ou états, et, d'autre part, par un miroir fixe (3) apte à diriger en les focalisant, les flux lumineux issus des moyens de propagation ou de transmission (1 et 2) sur l'entrée (7') de l'appareil de mesure (7), le flux lumineux issu du premier moyen (1) étant dirigé vers ce miroir fixe (3) et, en ce que l'obturateur mobile (4) comporte au moins une portion munie d'une zone de surface réfléchissante (9) sur sa face tournée vers le ou les deuxième(s) moyen(s) (2) et pouvant être amenée séquentiellement dans une position dans laquelle le flux lumineux issu du premier moyen (1) est masqué ou arrêté par cette portion et le flux lumineux issu du ou de l'un des deuxième(s) moyen(s) (2) est dévié vers le miroir fixe (3) en lieu et place du flux lumineux issu du premier moyen (1).
Abstract:
Système de collecte de lumière, amplificateur, achromatique et d'absorption réduite, particulièrement adapté à l'analyse spectrométrique optique.Ce système collecte la lumière émise par au moins une source lumineuse (52) et la focalise sur au moins un dispositif de détection de lumière (54). Il comprend de préférence un premier miroir (58) qui collecte la lumière émise par la source et la focalise sur un deuxième miroir (60) qui la focalise à son tour sur le dispositif. Le système est muni d'une enceinte qui est opaque à toute lumière, en particulier aux rayonnements ultraviolets, et dans laquelle sont placés la source lumineuse, le dispositif de détection de lumière et les miroirs, et de moyens pour faire le vide dans cette enceinte ou la remplir d'un gaz qui est transparent aux rayonnements ultraviolets.
Abstract:
Systems and methods for filter based spectrographic analysis are provided that permit rapid analysis of bioanalytes. Systems include devices for illuminating a sample with electromagnetic radiation and capturing radiation emitted from the sample. Emitted radiation can be collected by a plurality of waveguides (406) each associated with a filter (408) for a particular wavelength of radiation. Radiation captured by waveguides can then be transmitted to a remote detector (400), which can determine the intensity of radiation for each waveguide. The use of plurality of filters having different band pass characteristics can permit the simultaneous detection of a plurality of different wavelengths of radiation emitted by a sample, thereby providing spectrographic information about the sample under study. Systems can include computers (411) for storing acquired spectrographic information, addressable arrays of samples, and information security measures. Spectrographic information of samples can be diagnostic tools for identifying and quantifying a variety of different materials, including bioanalytes.
Abstract:
The invention relates to devices for sorting objects by color, size, shape and other characteristics. The primary field of application is the sorting of agricultural produce. An optical fiber laser sorter comprises a device for conveying material to be sorted, a device for the laser irradiation of material to be sorted, a laser beam scanning device, two or more image reading and processing devices, and a device for removing defective material. The laser irradiation device additionally comprises an optical fiber, the input of which is connected via focusing optics to the optical outputs of one or a plurality of lasers, and the output of which is connected to focusing and cylindrical optics of the laser beam scanning device. The image reading and processing devices are designed to be capable of reading laser radiation reflected from and transmitted through a material and also of reading in different spectral ranges. The technical result is an increase in sorting effectiveness.
Abstract:
An optical device is provided that includes a converging lens device, a transmitting optical fiber, a sample holder, and a receiving optical fiber. The converging lens device focuses light onto the transmitting optical fiber, which receives the focused light through an entrance face and transmits the light from an exit face, through a sample, and onto the receiving optical fiber. The sample holder holds the sample for analysis. The receiving optical fiber receives the light through an entrance face of the receiving optical fiber after transmission through the sample. The converging lens device is positioned to focus the light onto the entrance face of the transmitting optical fiber such that a half-angle of the angular distribution of the focused light that reaches the entrance face of the transmitting optical fiber is selected to underfill an entrance aperture of the entrance face of the receiving optical fiber in both a spatial dimension and an angular dimension.
Abstract:
Reflectance systems and methods are described that under-fill the collection fiber of a host spectrometer both spatially and angularly. The under- filled collection fiber produces a response of fiber-based spectrometers that is relatively insensitive to sample shape and position.
Abstract:
An apparatus consisting of stacked slab waveguides whose outputs are vertically staggered is disclosed. At the input to the stacked waveguides, the entrances to each slab lie in approximately the same vertical plane. A spot which is imaged onto the input will be transformed approximately to a set of staggered rectangles at the output, without substantial loss in brightness, which staggered rectangles can serve as a convenient input to a spectroscopic apparatus. A slit mask can be added to spatially filter the outputs so as to present the desired transverse width in the plane of the spectroscopic apparatus parallel to its dispersion.