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57 条记录 (耗时 0.027 秒)

    Optical particle sensor
    22.
    发明授权
    Optical particle sensor 有权

    公开(公告)号：US11579062B2

    公开(公告)日：2023-02-14

    申请号：US17305070

    申请日：2021-06-30

    申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

    发明人： Tony Maindron ,  Salim Boutami ,  Christophe Kopp

    IPC分类号： G01N15/02 ,  G01N15/00

    摘要： The invention provides an optical particle sensor (1) comprising: at least one light source (2, 2r, 2g, 2b) configured to emit light rays (20), at least one channel (3) intended to receive a fluid transporting at least one particle (30), and to at least partially receive the light rays (20) emitted by the at least one source (2, 2r, 2g, 2b), such that said light rays (20) are partially scattered by the at least one particle (30), at least one photodetector (4) capable of receiving said scattered light rays (20), said sensor (1) being characterised in that the at least one source (2, 2r, 2g, 2b) has an emission face (21) facing one side (D) of the sensor and in that the at least one photodetector (4) has a receiving face (41) facing the same side (D) of the sensor (1), such that the light rays received by the at least one photodetector are light rays (20b) backscattered by the at least one particle (30), for at least 90% of them.

    Optical detector of particles
    23.
    发明授权
    Optical detector of particles 有权

    公开(公告)号：US11204308B2

    公开(公告)日：2021-12-21

    申请号：US16480136

    申请日：2018-01-25

    申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

    发明人： Salim Boutami ,  Sergio Nicoletti

    IPC分类号： G01N15/02 ,  G01N21/47 ,  G01N15/14 ,  G01N15/06

    摘要： The present invention relates to a particle detector comprising at least an optical device configured to emit a luminous radiation; and a substrate extending in a plane and defining a channel intended to receive particles, the channel extending principally in a direction perpendicular to the principal plane; characterised in that the detector comprises a matrix of photo detectors and a reflecting surface; the matrix of photo detectors and the reflecting surface being disposed on mutually parallel planes and situated on either side of said portion of the substrate so that a part of the luminous radiation passes through the channel by being diffracted by a particle, then reflects off the reflecting surface, and then reaches the matrix of photo detectors.

    Highly-folding pendular optical cavity
    24.
    发明授权
    Highly-folding pendular optical cavity 有权

    公开(公告)号：US10884225B2

    公开(公告)日：2021-01-05

    申请号：US16341220

    申请日：2017-10-10

    申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

    发明人： Salim Boutami

    IPC分类号： G02B19/00 ,  G01N21/3504 ,  G02B17/00 ,  G01N21/03

    摘要： An optical cavity includes: a first elliptical mirror, having a first focal axis A1, and designed to reflect a light beam emitted by a light source; a second elliptical mirror, having a second focal axis A2; a third elliptical mirror, having a third focal axis A3, the light beam exiting from the third elliptical mirror being designed to be received by a detector; a first reflector, arranged to reflect the light beam exiting from first elliptical mirror in the direction of the second elliptical mirror, and arranged to reflect the light beam exiting from second elliptical mirror in the direction of the third elliptical mirror; the first, second and third elliptical mirrors being arranged so that A1, A2 and A3 have a point of intersection F, corresponding to a focus common to the first, second and third elliptical mirrors.

    Optical device
    26.
    发明授权
    Optical device 有权

    公开(公告)号：US10788623B2

    公开(公告)日：2020-09-29

    申请号：US16308277

    申请日：2017-06-08

    申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

    发明人： Salim Boutami

    IPC分类号： G02B6/122 ,  G02B6/136 ,  G02B6/24 ,  G02B6/10 ,  G02B6/12

    摘要： An optical device including: a waveguide, including a core having a refractive index, for guiding a quasi monochromatic light radiation, of a central wavelength, in a first direction and transmitting the radiation through an exit facet of the waveguide to the external environment according to a transmission coefficient, the exit facet being substantially perpendicular to the first direction, a filter blade, for example an air blade, disposed in the waveguide, parallel to the exit facet and at a first non-zero distance from the exit facet, the filter blade having, in the first direction, a first thickness, the first distance and the first thickness configured so that the transmission coefficient of the waveguide is equal to a first transmission coefficient at the central wavelength.

    Avalanche photodiode
    27.
    发明授权
    Avalanche photodiode 有权

    公开(公告)号：US10686092B2

    公开(公告)日：2020-06-16

    申请号：US16104188

    申请日：2018-08-17

    申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

    发明人： Karim Hassan ,  Salim Boutami

    IPC分类号： H01L31/107 ,  H01L31/02 ,  H01L31/0224 ,  H01L31/18 ,  H01L31/0232 ,  G02B6/42

    摘要： The invention aims for an avalanche photodiode comprising an absorption zone (2), a multiplication zone (3), a first electrode and a second electrode. The photodiode further comprises a waveguide (10) forming a curved closed circuit capable of guiding a luminous flux over several turns of said circuit. The absorption zone extends over a portion at least of said waveguide, and the multiplication zone, the first and second electrodes extend along one part at least of the curved closed circuit. The waveguide is preferably an edge waveguide forming a ring and comprising an absorption zone made of germanium of width less than 200 nm. The photodiode according to the invention has an improved compacity and an improved bandwidth while limiting the multiplication noise.

    Displacement sensor with segmented ring microresonator
    28.
    发明授权
    Displacement sensor with segmented ring microresonator 有权

    公开(公告)号：US10578437B2

    公开(公告)日：2020-03-03

    申请号：US16026535

    申请日：2018-07-03

    申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

    发明人： Boris Taurel ,  Salim Boutami ,  Laurent Duraffourg

    IPC分类号： G01C19/72 ,  G02B6/293

    摘要： An optical sensor includes an optical device including a microresonator, laid out to guide a light beam along a closed loop optical path, and an injection and/or extraction waveguide, optically coupled to the microresonator; a photodetector, arranged at the output of the injection and/or extraction waveguide; and an analysis device, receiving a signal supplied by the photodetector, and deducing therefrom information relative to a displacement. The microresonator is constituted of a plurality of elementary waveguides spaced apart from each other, and arranged one after the other according to a loop shaped layout. The optical sensor offers increased sensitivity to the measurement of nanometric displacements.