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    TUNABLE VCSEL WITH STRAIN COMPENSATED SEMICONDUCTOR DBR
    1.
    发明申请
    TUNABLE VCSEL WITH STRAIN COMPENSATED SEMICONDUCTOR DBR 审中-公开

    公开(公告)号：WO2022082203A1

    公开(公告)日：2022-04-21

    申请号：PCT/US2021/071874

    申请日：2021-10-14

    Applicant: EXCELITAS TECHNOLOGIES CORP.

    Inventor： KUZNETSOV, Mark E.

    IPC: H01S5/183

    Abstract: Tunable VCSELs (TVCSELs) employing expanded material systems with expanded mechanical/optical design space for semiconductor DBR mirrors on GaAs substrates. One is the InGaAs / AlGaAsP material system. It adds indium In to decrease InGaAs H-layer bandgap for higher refractive index and higher DBR layer refractive index contrast. Adding phosphorus P gives independent control of bandgap and strain of AlGaAsP low refractive index L-layers. The tensile strain of AlGaAsP L-layer compensates compressive strain of InGaAs H-layer and lowers the cumulative strain of the multilayer DBR structure. Another option is the InGaAsN(Sb) / AlGaAsP material system, where both types of layers can be lattice matched to GaAs. It uses indium In and nitrogen N, and possibly antimony Sb, to get independent control of strain and bandgap, and thus refractive index, of dilute nitride InGaAsN(Sb) H-layers, with lower bandgap and higher refractive index than starting GaAs. Using expanded material system enables reliable DBR mirrors with higher reflectivity and spectral bandwidth and tunable VCSELs with wider tuning range.

    FRAME CROSS MEMBER FOR BATTERY ELECTRIC VEHICLE
    2.
    发明申请
    FRAME CROSS MEMBER FOR BATTERY ELECTRIC VEHICLE 审中-公开

    公开(公告)号：WO2022060648A1

    公开(公告)日：2022-03-24

    申请号：PCT/US2021/049998

    申请日：2021-09-13

    Applicant: TROVA COMMERCIAL VEHICLES INC

    Inventor： COLLIGNON, Patrick ,  COLLIGNON, Maxell

    IPC: B62D21/02 ,  B62D21/09 ,  B62D21/12

    Abstract: A u-shaped crossmember is employed in the construction of a chassis frame of a medium or heavy duty battery electric vehicle. In the design, frame rails are joined by at least one of U-shaped cross members, which comprises a main center section and four or more support arms, which extend away from the main center section of the cross member in the transverse direction of the longitudinal frames. The cross members, in one example, include two brackets. Each bracket has two arms connected by a center main portion. These brackets can be fabricated by creating a plurality of angles in several locations that add up to 90-degrees. The angled design allows the transmission of longitudinal and lateral forces to both frame rails. Due to U-shaped nature of the cross member, the body of the chassis frame is opened to allow for installation of components, subassemblies, and especially battery packs, etc.

    PROCESS PARAMETER PREDICTION USING MULTIVARIANT STRUCTURAL REGRESSION
    5.
    发明申请
    PROCESS PARAMETER PREDICTION USING MULTIVARIANT STRUCTURAL REGRESSION 审中-公开

    公开(公告)号：WO2021062336A1

    公开(公告)日：2021-04-01

    申请号：PCT/US2020/052968

    申请日：2020-09-26

    Applicant: CARL ZEISS X-RAY MICROSCOPY, INC.

    Inventor： ANDREW, Matthew

    IPC: G06T7/00

    Abstract: Multivariant feature extraction is used for training volumes or 2D images, (real or synthetic) coupled to process (effective) values probably obtained from direct simulation. These features are coupled with machine learning / regression algorithms to make a predictive model for the effective property. This model can then be used on a real geometry of a sample for effective parameter prediction.

    SYSTEM AND METHOD FOR DETECTING ROOM OCCUPANCY WITH BEAMFORMING MICROPHONE ARRAYS
    9.
    发明申请
    SYSTEM AND METHOD FOR DETECTING ROOM OCCUPANCY WITH BEAMFORMING MICROPHONE ARRAYS 审中-公开

    公开(公告)号：WO2020041094A1

    公开(公告)日：2020-02-27

    申请号：PCT/US2019/046689

    申请日：2019-08-15

    Applicant: SENSORMATIC ELECTRONICS, LLC

    Inventor： GALVEZ, Miguel ,  MARTIN, Walter A. ,  HYUN, Danny

    IPC: G05B15/02

    Abstract: A building automation system generates occupancy information for occupants of spaces of a building (e.g. quantity, identity and/or location of the occupants) based on occupancy sensors in the spaces. The occupancy sensors capture speech sounds originating from one or more occupants of the spaces and/or ultrasonic emissions originating from one or more user devices of the occupants are via microphone arrays. Audio data based on the captured sound is then generated. Position information for the sources of the sound is determined based on the audio data, and the audio data is enhanced based on the position information via a beamforming process. Occupancy information for the spaces is generated based on the audio data. Environmental conditions of the spaces are controlled based on the presence, absence, position, orientation, distribution and/or preferences of the occupants in the space.

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