Photodetection apparatus including optical filter and optical detector

    公开(公告)号:US09976904B2

    公开(公告)日:2018-05-22

    申请号:US15206266

    申请日:2016-07-09

    Inventor: Seiji Nishiwaki

    Abstract: In one aspect, an apparatus includes a first light source that applies first light having a first wavelength as a center wavelength to an object, a second light source that applies second light having a second wavelength as a center wavelength longer than the first wavelength to the object, an optical filter that includes first and second regions and that transmits third light produced by the first and second light each passed through or reflected by the object, first and second optical detectors that determine first and second amounts, respectively, of the third light passed through the first and second regions. The transmission ranges of spectral transmission curves of the first and second regions are located between the first wavelength and the second wavelength. The spectral transmission curve of the first region has a width at half maximum different from that of the spectral transmission curve of the second region.

    Electronic device and information processing method

    公开(公告)号:US09869589B2

    公开(公告)日:2018-01-16

    申请号:US14579310

    申请日:2014-12-22

    CPC classification number: G01J3/2803 G01J3/0205 G01J3/12 G01J5/60

    Abstract: The present disclosure discloses an electronic device and an information processing method. The electronic device comprises a light detection unit, including a photonic crystal layer configured to reflect and transmit light with a first wavelength in a first incident light according to a voltage applied to the photonic crystal layer; and a photosensitive layer arranged at a light transmission side of the photonic crystal layer and configured to detect a first parameter of a first transmission light transmitted through the photonic crystal layer when the light with the first wavelength is reflected by the photonic crystal layer, and detect a second parameter of a second transmission light transmitted through the photonic crystal layer when the light with the first wavelength is transmitted through the photonic crystal layer; and a processing unit configured to form a spectrum of the first waveform according to the first parameter and the second parameter.

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