Hybrid two-dimensional (2D) scanner system and method of operating the same

    公开(公告)号:US10598923B2

    公开(公告)日:2020-03-24

    申请号:US15818279

    申请日:2017-11-20

    Abstract: Provided are a hybrid two-dimensional (2D) scanner system and a method of operating the same. The hybrid 2D scanner system includes a meta-surface based one-dimensional (1D) scanner and a mechanical scanner connected to the meta-surface based 1D scanner. In this scanner system, the mechanical scanner is operated as a 1D scanner. For this purpose, one of two rotational axes included in the mechanical scanner is maintained in a fixed position during a scanning operation. The meta-surface based 1D scanner may include a base substrate, a meta-surface that is arranged on the base substrate and includes a channel array, and a power supply configured to apply a voltage to the channel array.

    META DEVICE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20210033892A1

    公开(公告)日:2021-02-04

    申请号:US17075007

    申请日:2020-10-20

    Abstract: A beam steering apparatus may include: a mirror; a refractive index modulation layer disposed on the mirror; a nanoantenna on the refractive index modulation layer; and an insulating layer disposed between the nanoantenna and the refractive index modulation layer, wherein the insulating layer has a thickness distribution in which a first thickness of the insulating layer on a central region of the mirror is less than a second thickness of the insulating layer on an edge region of the mirror, wherein a refractive index of the refractive index modulation layer is modulated to control propagation direction of beam.

    Phase modulation active device, method of driving the same, and optical apparatus including the phase modulation active device

    公开(公告)号:US10761351B2

    公开(公告)日:2020-09-01

    申请号:US15685314

    申请日:2017-08-24

    Abstract: A phase modulation active device and a method of driving the same are provided. The method may include configuring, for the phase modulation active device including a plurality of channels that modulate a phase of incident light, a phase profile indicating a phase modulation target value to be implemented by the phase modulation active device; setting a phase limit value of the phase modulation active device; generating a modified phase profile based on the phase profile by modifying the phase modulation target value, for at least one channel from the plurality of channels that meets or exceeds the phase limit value, to a modified phase modulation target value that is less than the phase limit value in the phase profile; and operating the phase modulation active device based on the modified phase profile. Thus, improved optical modulation performance may be achieved.

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