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公开(公告)号：NO20033308D0
公开(公告)日：2003-07-22
申请号：NO20033308
申请日：2003-07-22
Applicant: BERTIN TECHNOLOGIES SA
Inventor： ALAZARINE AYMERIC , BERNASCOLLE PHILIPPE , LEBLAY PIERRICK , PELOUS GERARD
Abstract: A measurement scale independent of temperature is determined in the calculating window from the ratio of differences in flow through the two filters. The gas concentration can be calculated from this scale by weighting the ratio using the mean flow in the calculating window or as a function of the difference between a preset temperature and the ground temperatures during the calculating window Optical gas detection system by observation at a distance of an area using a measurement filter with a transmission band comprising a specific absorption ray for the gas being sought and a reference filter with a transmission band corresponding to that of the measurement filter but not including the specific absorption ray for the gas. The process involves detecting the presence of the gas by determining the difference in flow through the gas (22) and coming from points at different temperatures in a calculation window, and of the ratio of the flow differences seen through the measurement filter and through the reference filter. The scale is equal to ( eta . phi p)/K, where eta is the ratio, phi the mean flow in the calculating window, p a parameter depending on the measuring and reference filters and K a normalization parameter equal to phi p for a preset temperature in the calculating window, e.g. 20 deg C. The values of the derivative with respect to the temperature of the spectral luminescence of a black body at a given mean temperature are calculated for difference ground temperatures to deduce the derivative with respect to the temperature of a ratio for the same mean temperature in the absence of gas. The values are recorded and the measured ratios weighted as a function of the difference between the ground temperatures and the preset mean temperature. For the detection of several gases, a filter assembly (F1, F2, F3) is used, with the transmission bands determined relative to each other as a function of the absorption rays of the gases (G1, G2, G3). Thus, a filter (F2) can be used as a reference filter for a gas (G1) and as a measuring filter for another gas (G2,G3), or vice versa, connecting the filters in pairs, each pair detecting one or more gases. An identification matrix is formed where the rows correspond to the pairs of filters and the columns to the gases to be detected. The matrix is formed by calibrating the various filters and is used to detect the presence and concentration of the gases. A series of filters with stepped transmission bands are used.
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公开(公告)号：FR2834480A1
公开(公告)日：2003-07-11
申请号：FR0200277
申请日：2002-01-10
Applicant: BERTIN TECHNOLOGIES SA
Inventor： WIETZKE CECILE MARIA , MATTOUT RICHARD , VERDIER AMANDINE , TROUCHET DANIEL , BOUGY JEAN JACQUES
Abstract: The powder dispersion device has a chamber (10) housing a block (12) of compacted powder, with a piston (14) exercising pressure on the block. A pressurized gas stream is directed onto the block on the side opposite the piston. The gas gathers powder and is directed through a passage (18) past a tapered needle (40) that controls the flow and deflects the stream to outlet passages (22).
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公开(公告)号：AU2202002A
公开(公告)日：2002-06-11
申请号：AU2202002
申请日：2001-11-21
Applicant: BERTIN TECHNOLOGIES SA
Inventor： BIZET KARINE , VALLAYER BRUNO , VATTAIRE MAURICE
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公开(公告)号：FR2807277A1
公开(公告)日：2001-10-05
申请号：FR0004367
申请日：2000-04-04
Applicant: BERTIN TECHNOLOGIES SA
Inventor： RAGUENET WILFRID
Abstract: The invention concerns a pneumatic loudspeaker, fed by a gas stream under pressure flowing through a sonic throat (62) and modulated by axial displacement of a mobile element in the annular air gap of a magnetic circuit formed by axially stacked discs of permanent magnets (24) and of soft iron (26) inside a soft iron yoke (16). The invention enables the miniaturisation of high acoustic power pneumatic loudspeakers.
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公开(公告)号：FR2804936A1
公开(公告)日：2001-08-17
申请号：FR0001923
申请日：2000-02-15
Applicant: BERTIN TECHNOLOGIES SA
Inventor： LEPRETRE MARC , CHASTANG GEORGES
Abstract: The invention concerns a remote-controlled flying machine, in particular for surveillance and inspection, capable of hovering and comprising a spherical open-worked resistant shroud (40) integral with a cylindrical fairing (16) wherein rotates a propeller (10) powered by an engine (12) housed in a fuselage (18) secured to the fairing (16) with radial arms (28) and straightening vanes (30).
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Patent Agency Ranking
公开(公告)号：US10677692B2
公开(公告)日：2020-06-09
申请号：US15511077
申请日：2015-09-15
Applicant: Bertin Technologies
Inventor： Julien Vallayer , Julien Charpentier
Abstract: A unit for grinding biological samples, comprising a grinding device including at least two tubes having different volumes, suitable for being mounted on a support of the grinding device, each tube comprising an inner space having a height (h) along the axis of the corresponding tube, and being intended to contain samples to be ground, means for driving the support in a precession movement, the support having an axis the position of which varies by describing a cone, each tube being subjected to a movement (d) defined by the projection, onto the axis of said cone, of the distance between the extreme positions of a same point of the tube during the precession movement.
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公开(公告)号：US20190066266A1
公开(公告)日：2019-02-28
申请号：US16083116
申请日：2017-03-13
Applicant: Bertin Technologies
Inventor： Emmanuel SOULIE , David ORIOT DE LA CHAPELLE , Damien DIAZ
Abstract: An image processing method using a first image sensor covering the visible range and a second sensor covering the infra-red range. The method includes a) acquiring a first image I1 of said given zone of space by means of the first image sensor, b) acquiring a second image I2 of said given zone of space by means of the second image sensor, c) performing a decomposition of the first image I1 so as to obtain at least one luminance image I1L, d) obtaining an image If resulting from digital fusion of the luminance image I1L and of the second image I2, e) adding colour information to the fusion image If or during the fusion stage d).
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公开(公告)号：US10060848B2
公开(公告)日：2018-08-28
申请号：US15534571
申请日：2015-12-11
Applicant: BERTIN TECHNOLOGIES
Inventor： Nathalie Morin , Philippe Bernascolle , Franck Fervel , Guillaume Druart
IPC: G01N21/35 , G01N21/3518
CPC classification number: G01N21/3518 , G01J3/0205 , G01J3/36 , G01J2003/1213 , G02B5/008 , G02B5/22 , G02B17/006 , G02B27/106 , G02B27/1066
Abstract: An optical filtering device, in particular for remote gas detection, including a member comprising a tubular passage accommodating a plurality of reflective structures capable of reflecting infrared wavelengths, said structures being elongated along an axis of the tubular passage and arranged around the axis. The reflective structures comprise means of filtering by absorption of bands of different wavelengths located in the infrared spectral band.
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公开(公告)号：US09726600B2
公开(公告)日：2017-08-08
申请号：US14646531
申请日：2013-11-20
Applicant: Bertin Technologies
Inventor： Franck Fervel , Philippe Bernascolle
IPC: G01N21/3504 , G01N33/00 , G01N21/47 , G01J3/42 , G02B26/08
CPC classification number: G01N21/3504 , G01J3/42 , G01N21/47 , G01N33/0031 , G01N33/0036 , G02B26/0833
Abstract: A detector device for optically detecting a gas in a zone of space under observation, the device comprising a camera and means for continuously detecting at least one gas in the observed zone by analyzing absorbance in a plurality of different spectral bands. The device further comprises a matrix of micromirrors that are individually steerable between at least two positions, in a first of which they reflect the radiant flux coming from the observed zone to the camera for detecting gas in said spectral bands, and in a second of which they reflect the radiant flux coming from the observed zone to a Fourier transform infrared spectroscope.
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公开(公告)号：FR3149098A1
公开(公告)日：2024-11-29
申请号：FR2305150
申请日：2023-05-24
Applicant: BERTIN TECHNOLOGIES SA
Inventor： GRASSER RÉGIS , CASALE MARCO
Abstract: Système de multiplexage de faisceaux optiques en espace libre et procédé associé L’invention concerne un système de multiplexage (1) en espace libre de faisceaux (10) lumineux polarisés pour la transmission en espace libre d’un faisceau multiplexé (12), comprenant une pluralité de dispositifs optiques de multiplexage (11) sur au moins deux étages (11a), et dans lequel, pour au moins un étage entrelaceur (11b), au moins un dispositif de multiplexage (11) comprend un dispositif entrelaceur (110) comprenant un module optique de combinaison (113) invariant en angle configuré pour combiner des faisceaux entrants (10a, 10b) de polarisation distincte, pour former un faisceau sortant (10c) de polarisation mixte et un module optique de transformation (111) configurés pour modifier la polarisation du faisceau sortant 10c pour former un faisceau multiplexé (12a) de même polarisation. Figure pour l’abrégé : Fig. 5
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