Multispectral filter
    1.
    发明授权

    公开(公告)号:US11880054B2

    公开(公告)日:2024-01-23

    申请号:US16948003

    申请日:2020-08-27

    Abstract: An optical filter may include a substrate. The optical filter may include a first mirror and a second mirror. Each of the first mirror and the second mirror may include a plurality of quarterwave stacks. The plurality of quarterwave stacks may include a plurality of layers comprising a first material, a second material, and a third material. The optical filter may include a spacer disposed between the first mirror and the second mirror.

    Dielectric mirror based multispectral filter array

    公开(公告)号:US11450698B2

    公开(公告)日:2022-09-20

    申请号:US15964395

    申请日:2018-04-27

    Abstract: An optical sensor device may include a set of optical sensors. The optical sensor device may include a substrate. The optical sensor device may include a multispectral filter array disposed on the substrate. The multispectral filter array may include a first dielectric mirror disposed on the substrate. The multispectral filter array may include a spacer disposed on the first dielectric mirror. The spacer may include a set of layers. The multispectral filter array may include a second dielectric mirror disposed on the spacer. The second dielectric mirror may be aligned with two or more sensor elements of a set of sensor elements.

    Multispectral filter
    4.
    发明授权

    公开(公告)号:US11143803B2

    公开(公告)日:2021-10-12

    申请号:US16049391

    申请日:2018-07-30

    Abstract: An optical filter may include a substrate, a first mirror that includes a first subset of layers of a set of layers, and a second mirror that includes a second subset of layers of the set of layers. The optical filter may include a spacer. The spacer may include a third subset of layers of the set of layers. The set of layers may include a plurality of high refractive index layers associated with a first refractive index and a plurality of low refractive index layers associated with a second refractive index that is less than the first refractive index. The optical filter may be associated with a spectral range from at least approximately 1200 nanometers (nm) to approximately 1900 nm.

    Silicon-germanium based optical filter

    公开(公告)号:US10168459B2

    公开(公告)日:2019-01-01

    申请号:US15365540

    申请日:2016-11-30

    Abstract: An optical filter may include a substrate. An optical filter may include a set of optical filter layers disposed onto the substrate. The set of optical filter layers including a first subset of optical filter layers. The first subset of optical filter layers may include a silicon-germanium (SiGe) with a first refractive index. An optical filter may include a second subset of optical filter layers. The second subset of optical filter layers may include a material with a second refractive index. The second refractive index being less than the first refractive index.

    Optical filter array
    9.
    发明授权

    公开(公告)号:US12243887B2

    公开(公告)日:2025-03-04

    申请号:US17247589

    申请日:2020-12-17

    Abstract: A device may include a filter array disposed on a substrate. The filter array may include a first mirror disposed on the substrate. The filter array may include a plurality of spacers disposed on the first mirror. A first spacer, of the plurality of spacers, may be associated with a first thickness. A second spacer, of the plurality of spacers, may be associated with a second thickness that is different from the first thickness. A first channel corresponding to the first spacer and a second channel corresponding to the second spacer may be associated with a separation width of less than approximately 10 micrometers (μm). The filter array may include a second mirror disposed on the plurality of spacers.

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