MULTI-LAYERED MATERIALS FOR USE IN WAVEGUIDES

    公开(公告)号:EP4556971A1

    公开(公告)日:2025-05-21

    申请号:EP24186681.3

    申请日:2024-07-04

    Abstract: A waveguide includes a plurality of sets of layers arranged in a stack. Each set of layers includes a first layer that comprises at least tantalum and oxygen, and a second layer that comprises at least silicon and oxygen. The waveguide is configured to propagate light associated with a particular wavelength in a first direction that is orthogonal to a second direction in which the plurality of sets of layers are arranged in the stack. A quantity of the plurality of sets of layers is greater than or equal to 15. Respective thicknesses of the first layer and the second layer, in the second direction, are less than or equal to a fifteenth of the particular wavelength.

    OPTICAL INTERFERENCE FILTER
    13.
    发明公开

    公开(公告)号:EP4198469A1

    公开(公告)日:2023-06-21

    申请号:EP22214370.3

    申请日:2022-12-16

    Abstract: An optical interference filter includes a substrate and a plurality of sets of layers that are disposed over the substrate. Each set of layers includes: a first layer that comprises at least a first oxide; a second layer disposed over the first layer that comprises at least a second oxide; and a third layer disposed over the second layer that comprises at least hydrogen and silicon. The optical interference filter may be configured to transmit light associated with a first spectral range (e.g., from 585 nanometers to 700 nanometers) and to block light associated with a second spectral range (e.g., from 440 nanometers to 475 nanometers). The third layer may have an extinction coefficient for the second spectral range that is greater than four times an extinction coefficient of the third layer for the first spectral range.

    OPTICAL INTERFERENCE FILTER
    14.
    发明公开

    公开(公告)号:EP4155787A1

    公开(公告)日:2023-03-29

    申请号:EP22198447.9

    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 a second subset of layers (240), wherein the second subset of layers comprises a hydrogenated silicon (Si:H) material.

    OPTICAL FILTER
    15.
    发明公开
    OPTICAL FILTER 审中-公开

    公开(公告)号:EP3893032A2

    公开(公告)日:2021-10-13

    申请号:EP21167226.6

    申请日:2021-04-07

    Abstract: In some implementations, an optical filter includes a first set of layers configured to pass light associated with a first wavelength range; a second set of layers configured to reflect light associated with at least one subrange of the first wavelength range; and a third set of layers configured to reflect light associated with a second wavelength range. In some implementations, the first wavelength range comprises an upper wavelength cutoff associated with a wavelength threshold, and the second wavelength range comprises a lower wavelength cutoff associated with the wavelength threshold. In some implementations, the optical filter includes a fourth set of layers configured to absorb a particular percentage of light in the first wavelength range.

    MULTISPECTRAL FILTER
    16.
    发明公开

    公开(公告)号:EP3407104A1

    公开(公告)日:2018-11-28

    申请号:EP18170865.2

    申请日:2018-05-04

    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.

    MIXED SPACER MULTISPECTRAL FILTER
    17.
    发明公开

    公开(公告)号:EP3407102A1

    公开(公告)日:2018-11-28

    申请号:EP18170858.7

    申请日:2018-05-04

    Abstract: An optical filter may include a first mirror, a second mirror, and a spacer layer structure disposed between the first mirror and the second mirror. The spacer layer structure may include a first set of layers. Each layer, of the first set of layers, may be a first material associated with a first refractive index and a thickness that is greater than a layer thickness threshold. The spacer layer structure may include a second set of layers. Each layer, of the second set of layers, may be a second material associated with a second refractive index. Each layer, of the second set of, may be selected to replace a corresponding layer of the first material. The corresponding layer may be associated with a thickness that is less than the layer thickness threshold.

    MULTI-BANDPASS OPTICAL INTERFERENCE FILTER
    18.
    发明公开

    公开(公告)号:EP4116682A2

    公开(公告)日:2023-01-11

    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.

    INDUCED TRANSMISSION FILTER WITH HYDROGENATED SILICON AND SILVER

    公开(公告)号:EP3904923A3

    公开(公告)日:2022-01-12

    申请号:EP21170801.1

    申请日:2021-04-27

    Abstract: An induced transmission filter may include a set of optical filter layers. 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 comprising at least silicon or 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 may be different from the first material and the second refractive index may be less than the first refractive index. The second material may include at least silver. A method of making the filter and an optical system comprising the filter are also described.

    INDUCED TRANSMISSION FILTER WITH HYDROGENATED SILICON AND SILVER

    公开(公告)号:EP3904923A2

    公开(公告)日:2021-11-03

    申请号:EP21170801.1

    申请日:2021-04-27

    Abstract: An induced transmission filter may include a set of optical filter layers. 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 comprising at least silicon or 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 may be different from the first material and the second refractive index may be less than the first refractive index. The second material may include at least silver. A method of making the filter and an optical system comprising the filter are also described.

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