Illumination control system
    1.
    发明授权

    公开(公告)号:US11882639B2

    公开(公告)日:2024-01-23

    申请号:US17605515

    申请日:2020-04-21

    CPC classification number: H05B47/125 H05B47/155 H05B47/175

    Abstract: An illumination control system includes an illumination device including light sources, and an illumination control device which is capable of individually controlling light emission of the light sources and includes: a measurer which obtains space information regarding a space in which the illumination device is to be installed and position information indicating a position at which the illumination device is to be installed inside the space; an information transmitter which transmits control information to the illumination device; and an information processor which optimizes control information for controlling a lighting mode of each of the light sources, according to an installation condition of the illumination device indicated in the space information and the position information.

    Wavelength conversion device, light source device, lighting apparatus, and projection image display apparatus

    公开(公告)号:US10698307B2

    公开(公告)日:2020-06-30

    申请号:US16221120

    申请日:2018-12-14

    Inventor: Kenta Watanabe

    Abstract: A wavelength conversion device is provided. The wavelength conversion device includes a light-transmissive substrate that includes an incidence surface and an emission surface opposite the incidence surface. The light-transmissive substrate is configured to receive, by the incidence surface, excitation light and emit, from the emission surface, the excitation light. A phosphor layer is configured to emit fluorescent light when excited by the excitation light emitted from the emission surface. The phosphor layer includes a first phosphor layer and a second phosphor layer. The first phosphor layer includes first phosphor particles. The second phosphor layer includes second phosphor particles configured to emit fluorescent light including a peak wavelength longer than a peak wavelength of fluorescent light emitted by the first phosphor particles. The first phosphor layer includes a refractive index different from a refractive index of the second phosphor layer.

Patent Agency Ranking