ZONAL ILLUMINATION WITH PHOTONIC CIRCUITS FOR DISPLAYS

    公开(公告)号:US20250130447A1

    公开(公告)日:2025-04-24

    申请号:US18405521

    申请日:2024-01-05

    Abstract: In some examples, a device may include a backlight unit configured to illuminate a display. In some examples, a light source may direct light into an active photonic circuit. The active photonic circuit may include optical switches controllable to distribute the light to illuminate display zones. An active photonic circuit may include an arrangement of optical switches configured to allow particular zones to be raster scanned, for example, using light distribution and outcoupling further using a passive photonic circuit. The illumination intensity for each zone may be controlled using the optical switches and/or with variation of the light source intensity. In some examples, the illumination intensity for each zone can be varied based on the displayed content, allowing improved contrast ratios. In some examples, all zones may be illuminated simultaneously with a zonal illumination intensity based on displayed content. Other devices, methods, systems, and computer-readable media are also disclosed.

    TRANSPARENT SPEAKER FOR DISPLAYS, WINDOWS, AND LENSES

    公开(公告)号:US20230096205A1

    公开(公告)日:2023-03-30

    申请号:US17993737

    申请日:2022-11-23

    Abstract: A transducer is described that includes a substrate configured to be deposited on a solid object, and a transparent medium coupled to the substrate and configured to oscillate at a pre-selected frequency upon receipt of an electrical excitation or a mechanical excitation and to provide a first acoustic wave. The transducer also includes an actuator configured to receive an electrical power, and to provide the electrical excitation or the mechanical excitation to the transparent medium, wherein at least a portion of the solid object is viewable through the transparent medium, and the first acoustic wave is at least partially transmitted through an interface of the transparent medium. A system and a non-transitory, computer-readable medium storing instructions to cause the system to perform a method to use the transducer for generating acoustic waves in a transparent medium are also disclosed.

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