Tunable dielectric resonators for freespace light intensity modulation

    公开(公告)号:US11966144B2

    公开(公告)日:2024-04-23

    申请号:US17857346

    申请日:2022-07-05

    IPC分类号: H04B10/00 G02F1/01 G02F1/17

    CPC分类号: G02F1/17 G02F1/011

    摘要: Tunable dielectric resonators for the modulation of freespace radiation and methods of using the resonators are provided. The dielectric resonators include a planar waveguide that supports a vertical Fabry-Perot resonance, a grating that supports a qBIC resonance, and a radiation absorbing material having an electronically or thermally tunable absorption at the qBIC resonant frequency. Using this resonator design, the intensity of the transmission and reflection of the qBIC resonance can be modulated by modulating the absorption properties of the absorbing material at the qBIC resonant frequency.

    TUNABLE DIELECTRIC RESONATORS FOR FREESPACE LIGHT INTENSITY MODULATION

    公开(公告)号:US20240012307A1

    公开(公告)日:2024-01-11

    申请号:US17857346

    申请日:2022-07-05

    IPC分类号: G02F1/17 G02F1/01

    CPC分类号: G02F1/17 G02F1/011

    摘要: Tunable dielectric resonators for the modulation of freespace radiation and methods of using the resonators are provided. The dielectric resonators include a planar waveguide that supports a vertical Fabry-Perot resonance, a grating that supports a qBIC resonance, and a radiation absorbing material having an electronically or thermally tunable absorption at the qBIC resonant frequency. Using this resonator design, the intensity of the transmission and reflection of the qBIC resonance can be modulated by modulating the absorption properties of the absorbing material at the qBIC resonant frequency.

    Display device having switchable viewing angle

    公开(公告)号:US11849624B2

    公开(公告)日:2023-12-19

    申请号:US17528708

    申请日:2021-11-17

    发明人: WonKi Park Sumin Lee

    摘要: A display device having switchable viewing angle includes a display panel including a first emission area, a second emission area, a third emission area and a fourth emission area, from which light in different wavelength bands is emitted, and a transparent photochromic layer disposed on at least one surface of the display panel, wherein each of the first emission area, the second emission area and the third emission area emits light in a wavelength band of visible light, the fourth emission area emits light in a wavelength band of ultraviolet ray, and when the fourth emission area is in an emission state, an area of the photochromic layer including the area corresponding to the fourth emission area is an opaque area, and wherein when the fourth emission area is in a non-emission state, an area of the photochromic layer including the area corresponding to the fourth emission area is a transparent region, thereby providing a display device capable of switching viewing angles.