POLARIZED BIOMETRIC OPERATIONS
    1.
    发明申请

    公开(公告)号:US20220375263A1

    公开(公告)日:2022-11-24

    申请号:US17748182

    申请日:2022-05-19

    Abstract: A system and corresponding method are disclosed for biometric operations. The system may comprise an illumination source, a polarization selector, an imager, and a controller. The illumination source may illuminate a biometric feature. The polarization selector may receive light reflected from the biometric feature and be operable between two states selectively transmitting different polarizations. The imager may receive the light selectively transmitted by the polarization selector and generate one or more images. The controller may perform a biometric authentication based, at least in part, on the one or more images. In operation, the polarization selector may switch between states so that the system may capture two separate image sets, each based on light of a different polarization. Accordingly, adverse reflections, such as those off an eyeball or glasses, may be substantially eliminated or reduced in at least one of the image sets.

    SINGLE SENSOR, SINGLE PATH MULTIVIEW OR MULTI-BAND SENSING

    公开(公告)号:US20220157872A1

    公开(公告)日:2022-05-19

    申请号:US17523971

    申请日:2021-11-11

    Abstract: An imaging system may comprise: an image sensor; a first lens having a first field of view; a second lens having a second field of view; a multi-band pass filter capable of filtering light by allowing light having a first wavelength and light having a second wavelength to pass through; at least one cholesteric liquid crystal pair, each of the at least one cholesteric liquid crystal pairs tuned to one of the first and second wavelengths filtered by the multi-band pass filter; wherein the image sensor, the multi-band pass filter, the at least one cholesteric liquid crystal pairs, the first lens, and the second lens may be in optical communication with one another; and wherein scenes captured by at least one of the first and second lenses may be transmitted to the image sensor.

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