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公开(公告)号：DE102004002194A1
公开(公告)日：2005-08-04
申请号：DE102004002194
申请日：2004-01-15
Applicant: NAT INST OF ADVANCED IND SCIEN
Inventor： KAWATE ETSUO
IPC: G01J3/08 , G01M11/02 , G01N21/55 , G01N21/59 , G01N21/00 , G01J1/04 , G01J3/02 , G01N21/17 , G01N21/41
Abstract: An optical measurement system where first and second optical paths are set up by projecting light to intersect in a window of a sliding holder (SH) in which a sample can be interposed, or withdrawn, from the selected optical path. The intensity of light can be measured after it has been reflected from either face of a sample, or refracted by the sample.
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公开(公告)号：AT299590T
公开(公告)日：2005-07-15
申请号：AT99952382
申请日：1999-08-12
Applicant: METSO PAPER AUTOMATION OY
Inventor： SCHUMACHER URSULA
Abstract: A device for detecting properties of a web of material has a crossbar extending across the web of material. An infrared spectrometer having a holographic grating is provided an has an input side and an output side. Infrared detectors are arranged at the output side of the infrared spectrometer and are formed by a detector matrix having n lines and m rows of infrared sensitive individual sensors. A plurality of optical waveguides are provided, each waveguide having an entrance area and an exit area. The entrance area is fastened to said crossbar, located in vicinity of the surface of the web of material and is oriented towards said surface. The exit areas of the optical waveguides are connected to the input side of the infrared spectrometer. The optical waveguides are arranged side by side in one line at this input side, so that infrared spectra inputted into the entrance areas of the individual optical waveguides appear in rows side by side at the output side of the spectrometer, and the spectra of up to m optical waveguides are distributed and detected in up to n spectral areas.
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公开(公告)号：GB2376294A
公开(公告)日：2002-12-11
申请号：GB0216672
申请日：2000-12-21
Applicant: SCAN MESSTECHNIK GMBH
Inventor： LOICHT MARTIN , WEINGARTNER ANDREAS , WEINGARTNER WENDELIN , FLEISCHMANN NIKOLAUS , ZIPPER THOMAS , WEINGARTNER BERNHARD
Abstract: The invention relates to a miniaturised spectrometer, especially in the form of a probe, for detecting the contents of a gaseous or liquid fluid. The invention comprises a light source (3) and a spectrometer (2), at least one measuring beam and at least one reference beam. The invention is characterised in that the light of the light source (3) is optionally spread and bundled by means of at least one optical lens (8) to form an essentially parallel beam, in that at least one measuring beam is guided through a light-permeable aperture out of the probe and into the fluid to be examined and through an additional light-permeable aperture back into the probe, in that at least one reference beam is guided inside the probe, in that collecting optics (14) consisting of at least one lens that guides beams to the point of impact or the inlet of the spectrometer (2) are provided and in that a beam selector (7) is provided in the area of the collecting optics (14), whereby said point of impact pertains to a light conductor (5) and said selector accepts one of the partial beams respectively and interrupts the remaining beams.
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Patent Agency Ranking
公开(公告)号：DE10021103A1
公开(公告)日：2001-11-08
申请号：DE10021103
申请日：2000-05-02
Applicant: QUALICO GMBH
Inventor： SCHUMACHER URSULA
Abstract: Light guides (28) have one end fastened to a crossbeam (26), while the other ends are linked with the corresponding fiber arrays (60). The outler regions of the light guides in each fiber array are arranged at the input side of the spectrometer. The signals coming from the light guide row of the fiber array are deflected by a rotating mirror arranged about a rotational axis sequential to a scrambled grid. The rotating axis of the mirror is parallel to the longitudinal axis of the light guide rows.
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287.发明专利
公开(公告)号：CA2368997A1
公开(公告)日：2000-10-19
申请号：CA2368997
申请日：1999-11-10
Applicant: NASA
Inventor： SACHSE GLEN
Abstract: A system and method are provided for detecting one or more substances. An optical path switch divides sample path radiation into a time of alternating first and second polarized components. The first polarized components are transmitted along a first optical path and the second polarized components along a second optical path. A first gasless optical filter train filters th e first polarized components to isolate at least a first wavelength band there by generating first filtered radiation. A second gasless optical filter train filters the second polarized components to isolate at least a second wavelength band thereby generating second filter radiation. Spectral absorption of a substance of interest is different at the first wavelength band as compared to the second wavelength band. A beam combiner combines the first and the second filtered radiation to form a combined beam of radiation . A detector is disposed to monitor magnitude of at least a portion of the combined beam alternately at the first wavelength band and the second wavelength band as an indication of the concentration of the substance in th e sample path.
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公开(公告)号：AU1922600A
公开(公告)日：2000-06-19
申请号：AU1922600
申请日：1999-11-24
Applicant: UNIV NEBRASKA
Inventor： DOWBEN PETER A , ADENWALLA SHIREEN , ROBERTSON BRIAN W , BAI MENGJUN
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公开(公告)号：DE19850335A1
公开(公告)日：2000-05-04
申请号：DE19850335
申请日：1998-11-02
Applicant: QUALICO GMBH
Inventor： SCHUMACHER URSULA
IPC: G01J3/08 , G01J3/18 , G01J3/28 , G01N21/89 , G02B6/06 , G02B6/34 , G02B6/38 , G01N21/86 , G01N21/35 , G01N21/59 , G01J3/42 , G01J3/30
Abstract: The present invention relates to a device for detecting the properties of a web of material transported in the longitudinal direction such as a paper web (20). The device includes a plurality of optical fibres (28) having their input areas (30) each located in the vicinity of the surface of the material web and aligned on said surface, the fibres being secured on a crossbar (26) extending across the material web. The device also includes an infrared spectrometer having the output areas (34) of the optical fibres (28) connected to its input (36) while infrared sensors are connected to the output (44) of said infrared spectrometer. The infrared spectrometer includes a holographic grating (40) for arranging the optical fibers (28) side by side and in one line at the spectrometer input (36) so that the infrared spectra of the signals emitted by the individual optical fibres (28) appear side by side in one line at the spectrometer output (44), and so that the infrared sensors at said output (44) are made in the form of a sensor matrix (46) comprising n lines and m rows of individual infrared-sensitive sensors (48), wherein the spectra from up to m optical fibres (28) can be distributed and detected into up to n spectral areas.
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公开(公告)号：ZA982011B
公开(公告)日：1999-09-10
申请号：ZA982011
申请日：1998-03-10
Applicant: HOWARD FOUNDATION
Inventor： BONE RICHARD ANDREW , LANDRUM JOHN THOMAS , HUANG WENLUE , ORTA CARLOS MANUEL
Abstract: A flicker photometer comprises generating means (1, 8, 4) for generating two beams of light of different colours. Both beams are directed to a viewing means (190), and a subject can vary the intensity of light from one beam relative to the other. The colour of the light seen by the subject is caused to alternate. The performance of the photometer is improved by screens which scatter light before it reaches the subject. A first of the screens (186, 188) reflects light from one beam, whilst a second screen (b) is translucent, and thus transmits light from the other. If light of wavelengths to which the eye is less sensitive is passed through the second screen, whilst light of a wavelength to which the eye is more sensitive passes through the first screen, the screens help to make it practicable for the generating means to use a single lamp (1) to produce the light for both beams.
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