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    MULTI-SPECTRAL OPTICAL SENSOR AND SYSTEM
    82.
    发明公开
    MULTI-SPECTRAL OPTICAL SENSOR AND SYSTEM 审中-公开

    公开(公告)号：US20230388660A1

    公开(公告)日：2023-11-30

    申请号：US18248246

    申请日：2021-10-06

    Applicant: ams Sensors Germany GmbH

    Inventor： Gunter SIESS ,  Volker MANNHEIM ,  Holger PLESS ,  Julius KOMMA

    IPC: H04N23/76 ,  G01J3/28 ,  H04N25/13 ,  H04N23/71 ,  H04N23/88

    CPC classification number: H04N23/76 ,  G01J3/2823 ,  G01J3/2803 ,  H04N25/13 ,  H04N23/71 ,  H04N23/88 ,  G01J2003/2806 ,  G01J2003/2813 ,  G01J2003/2816

    Abstract: A monolithic semiconductor chip defines a plurality of subarrays of optical detector regions, wherein each subarray of optical detector regions includes a corresponding plurality of optical detector regions and wherein each subarray of optical detector regions has the same relative spatial arrangement of optical detector regions as each of the other subarrays of optical detector regions. A multi-spectral optical sensor comprises the monolithic semiconductor chip, a plurality of optical filters, and a plurality of lens elements, wherein each optical filter is aligned between a corresponding lens element and a corresponding subarray of optical detector regions such that light which is incident on any one of the lens elements along a direction of incidence converges through the corresponding optical filter onto a corresponding one of the optical detector regions of the corresponding subarray of optical detector regions, which corresponding one of the optical detector regions depends on the direction of incidence. Such a multi-spectral optical sensor may be used to measure spectral information relating to different parts or sectors of a scene captured by an image sensor or a camera. A multi-spectral optical system and an image sensing system are also disclosed which comprise the multi-spectral optical sensor.

    Hyperspectral image sensor with calibration
    85.
    发明授权
    Hyperspectral image sensor with calibration 有权

    公开(公告)号：US11733095B2

    公开(公告)日：2023-08-22

    申请号：US17302217

    申请日：2021-04-27

    Applicant: IMEC

    Inventor： Nicolaas Tack ,  Andy Lambrechts ,  Luc Haspeslagh

    IPC: G01J3/28 ,  H04N23/11 ,  H04N25/75 ,  G01J3/26 ,  G01J3/12

    CPC classification number: G01J3/2823 ,  G01J3/12 ,  G01J3/26 ,  G01J3/2803 ,  H04N23/11 ,  H04N25/75 ,  G01J2003/1226 ,  G01J2003/265 ,  G01J2003/2806 ,  G01J2003/2826

    Abstract: A method for calibrating an image sensor begins by illuminating a portion of the image sensor with an input light spectrum, where the input light spectrum includes light of known wavelength and intensity. The method continues by sampling an output for each optical sensor of the image sensor, where each optical sensor is associated with one or more optical filters and where each optical filter being associated with a group of optical filters of a plurality of groups of optical filters. Each optical filter of a group of optical filters is configured to pass light in a different wavelength range and at least some optical filters in different groups of the plurality of groups of optical filters are configured to pass light in substantially a same wavelength range. The method then continues by comparing a sampled output for each optical sensor of the plurality of optical sensors with an expected output and generating a calibration factor for each of at least a subset of the plurality of optical sensors and storing the generated calibration factors in memory.

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