OPTICAL FILTER
    1.
    发明申请
    OPTICAL FILTER 审中-公开

    公开(公告)号:WO2020139841A2

    公开(公告)日:2020-07-02

    申请号:PCT/US2019/068362

    申请日:2019-12-23

    Abstract: An optical filter may include a set of optical filter layers disposed onto a substrate. The set of optical filter layers may include a first subset of optical filter layers comprising a first material with a first refractive index. The first material may comprise at least silicon and hydrogen. The set of optical filter layers may include a second subset of optical filter layers comprising a second material with a second refractive index. The second material is different from the first material and the second refractive index is less than the first refractive index. The set of optical filter layers may include a third subset of optical filter layers comprising a third material different from the first material and the second material.

    OPTICAL FILTER
    2.
    发明申请
    OPTICAL FILTER 审中-公开

    公开(公告)号:WO2020139841A3

    公开(公告)日:2020-07-02

    申请号:PCT/US2019/068362

    申请日:2019-12-23

    Abstract: An optical filter may include a set of optical filter layers disposed onto a substrate. The set of optical filter layers may include a first subset of optical filter layers comprising a first material with a first refractive index. The first material may comprise at least silicon and hydrogen. The set of optical filter layers may include a second subset of optical filter layers comprising a second material with a second refractive index. The second material is different from the first material and the second refractive index is less than the first refractive index. The set of optical filter layers may include a third subset of optical filter layers comprising a third material different from the first material and the second material.

    SILICON-GERMANIUM BASED OPTICAL FILTER
    4.
    发明申请

    公开(公告)号:WO2018102219A1

    公开(公告)日:2018-06-07

    申请号:PCT/US2017/063115

    申请日:2017-11-22

    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.

    INDUCED TRANSMISSION FILTER
    5.
    发明公开

    公开(公告)号:EP4400876A2

    公开(公告)日:2024-07-17

    申请号:EP24177928.9

    申请日:2018-05-04

    CPC classification number: G02B5/201 G02B5/28 G02B5/282 G02B5/285 Y02E10/52

    Abstract: A method comprising: filtering, by an optical filter, a first portion of an input optical signal with a first spectral range, wherein the first portion of the input optical signal is not passed through the optical filter and an optical filter structure; and passing, by the optical filter and an optical filter structure, a second portion of the input optical signal, with a second spectral range, through the optical filter and the optical filter structure and toward an optical sensor of a sensor system. The second portion of the input optical signal is used to provide an output electrical signal for the sensor system. The optical filter is a mixed dielectric/metal filter providing at least one of an angle shift of less than approximately 30 nm at angles of incidence from 0 degrees to 50 degrees, an angle shift of less than approximately 20 nm at angles of incidence from 0 degrees to 40 degrees, or an angle shift of less than approximately 10 nm at angles of incidence from 0 degrees to 20 degrees.

    MULTISPECTRAL FILTER
    6.
    发明公开

    公开(公告)号:EP3605166A3

    公开(公告)日:2020-04-15

    申请号:EP19188434.5

    申请日:2019-07-25

    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.

    INDUCED TRANSMISSION FILTER
    8.
    发明公开

    公开(公告)号:EP4400876A3

    公开(公告)日:2024-09-25

    申请号:EP24177928.9

    申请日:2018-05-04

    CPC classification number: G02B5/201 G02B5/28 G02B5/282 G02B5/285 Y02E10/52

    Abstract: A method comprising: filtering, by an optical filter, a first portion of an input optical signal with a first spectral range, wherein the first portion of the input optical signal is not passed through the optical filter and an optical filter structure; and passing, by the optical filter and an optical filter structure, a second portion of the input optical signal, with a second spectral range, through the optical filter and the optical filter structure and toward an optical sensor of a sensor system. The second portion of the input optical signal is used to provide an output electrical signal for the sensor system. The optical filter is a mixed dielectric/metal filter providing at least one of an angle shift of less than approximately 30 nm at angles of incidence from 0 degrees to 50 degrees, an angle shift of less than approximately 20 nm at angles of incidence from 0 degrees to 40 degrees, or an angle shift of less than approximately 10 nm at angles of incidence from 0 degrees to 20 degrees.

    OPTICAL INTERFERENCE FILTER
    9.
    发明公开

    公开(公告)号:EP4155786A1

    公开(公告)日:2023-03-29

    申请号:EP22198400.8

    申请日:2022-09-28

    Abstract: In some implementations, an optical interference filter (200) includes a substrate (210); and a set of layers (220) that are disposed on the substrate. The set of layers includes a first subset of layers (230), wherein the first subset of layers comprises an aluminum nitride (AlN) material, and wherein a stress of the first subset of layers is between -1000 and 800 megapascals; and a second subset of layers (240), wherein the second subset of layers comprises at least one other material (e.g. hydrogenated silicon).

    MULTI-BANDPASS OPTICAL INTERFERENCE FILTER
    10.
    发明公开

    公开(公告)号:EP4116682A3

    公开(公告)日:2023-03-29

    申请号:EP22183447.6

    申请日:2022-07-06

    Abstract: An optical device includes an optical sensor, a dye-based optical filter, and a multi-bandpass optical interference filter. The multi-bandpass optical interference filter is configured to pass a first spectral range of visible light, a second spectral range of visible light, and a third spectral range of visible light. The second spectral range does not overlap with the first spectral range, and the third spectral range does not overlap with the first spectral range and the second spectral range. The multi-bandpass optical interference filter is further configured to prevent passage of a fourth spectral range of near-infrared light. An angle shift associated with each spectral range, of the first spectral range, the second spectral range, and the third spectral range, is less than or equal to 2.0% of a center wavelength of the spectral range for angles of incidence between 0 and 30 degrees.

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