Determining an ambient light unit vector and an ambient light intensity value using a sensor behind display

    公开(公告)号:US12163839B2

    公开(公告)日:2024-12-10

    申请号:US17617722

    申请日:2020-07-16

    Abstract: The present disclosure describes a method and apparatus that can be used to determine various characteristics of ambient light when an ambient light sensor is located behind a display screen. The strategy of the disclosure relies, at least in part, on spectral decomposition of ambient light measurements into components (e.g., red, green, and blue components of an Organic Light Emitting Diode (“OLED”) display screen and ambient light). Following the spectral decomposition technique, statistical analysis are performed on the measurement data to remove the OLED light components from the measurement. This technique enables determinations such as ambient lux and correlated color temperature independent of the content displayed on the screen.

    FLEXIBLE ULTRAVIOLET SENSOR
    33.
    发明申请

    公开(公告)号:US20240402006A1

    公开(公告)日:2024-12-05

    申请号:US18328331

    申请日:2023-06-02

    Abstract: A flexible ultraviolet sensor circuit is provided comprising a number of solar cells, a reflective display device electrically connected to the solar cells, and a floating gate transistor electrically connected to the solar cells and reflective display device. A floating gate in the floating gate transistor discharges in response to ultraviolet light such that the floating gate transistor turns on when a threshold voltage of the floating gate transistor drops below a combined open circuit voltage of the solar cells minus a switching threshold of the reflective display device, thereby causing electrical current flow through the ultraviolet sensor circuit. The reflective display device changes as the electrical current flow increases, indicating total ultraviolet light exposure.

    LIGHT-OUT DETECTION FOR WAYSIDE SIGNALS

    公开(公告)号:US20240393168A1

    公开(公告)日:2024-11-28

    申请号:US18202363

    申请日:2023-05-26

    Inventor: Dustin Ferrone

    Abstract: A light-out detection device includes a mounting structure with a sensor for measuring a light output, wherein the mounting structure is configured as retrofittable structure to mount at a front side of a signal, a processor board with an actuator, the processor board being operably coupled to the at least one sensor, wherein the processor board is configured to control the actuator such that the actuator switches from a first state to a second state when the measured light output is less than a predefined threshold.

    Limitation of Noise on Light Detectors using an Aperture

    公开(公告)号:US20240385320A1

    公开(公告)日:2024-11-21

    申请号:US18429644

    申请日:2024-02-01

    Applicant: Waymo LLC

    Abstract: The present disclosure relates to limitation of noise on light detectors using an aperture. One example embodiment includes a system. The system includes a lens disposed relative to a scene and configured to focus light from the scene onto a focal plane. The system also includes an aperture defined within an opaque material disposed at the focal plane of the lens. The aperture has a cross-sectional area. In addition, the system includes an array of light detectors disposed on a side of the focal plane opposite the lens and configured to intercept and detect diverging light focused by the lens and transmitted through the aperture. A cross-sectional area of the array of light detectors that intercepts the diverging light is greater than the cross-sectional area of the aperture.

    Diagnostics of an on-board water generation system

    公开(公告)号:US12139423B2

    公开(公告)日:2024-11-12

    申请号:US17683849

    申请日:2022-03-01

    Abstract: A vehicle including: (a) a water generator configured to generate water; (b) a water storage container configured to store the water that the water generator generates; (c) an ultraviolet light emitter configured to emit ultraviolet light into the water storage container; (d) a sensor configured to detect the ultraviolet light that the ultraviolet light emitter has emitted; and (e) a human-machine interface configured to issue a notification to a user of the vehicle regarding the ultraviolet light emitter. The sensor can detect a wavelength range of the ultraviolet light that the ultraviolet light emitter has emitted. The sensor can detect an intensity of the ultraviolet light at a predetermined wavelength or wavelength range that the ultraviolet light emitter has emitted. The vehicle further comprises a controller in communication with the ultraviolet light emitter, the sensor, and the human-machine interface.

    Elastic retroreflector
    39.
    发明授权

    公开(公告)号:US12138873B2

    公开(公告)日:2024-11-12

    申请号:US17525546

    申请日:2021-11-12

    Abstract: A retroreflector includes an arrangement of triples, each having three side surfaces, which are disposed in the manner of a cube corner and stand approximately perpendicular on one another. The retroreflector can be produced from a carrier material by injection molding. An optical silicone resin is used as the carrier material. The retroreflector is based on triple mirrors that are both easily unmolded from a die and easily applied to curved surfaces even after unmolding or are usable for reflection of ultraviolet light.

    THROUGH-BEAM PHOTOELECTRIC SENSOR AND ASSEMBLY METHOD

    公开(公告)号:US20240369406A1

    公开(公告)日:2024-11-07

    申请号:US18775016

    申请日:2024-07-17

    Abstract: A through-beam photoelectric sensor includes an emitter and a receiver, the emitter is opposite the receiver, the receiver is configured to receive an optical signal from the emitter, the emitter comprises a first housing, an emitter lens, a first PCB, a lamp panel and an emission lamp, the emitter lens is embedded in the first housing, a light hole is formed in the lamp panel, the emission lamp is welded on the lamp panel and clamped in the light hole, a limit block is provided in the first housing, the lamp panel is detachably mounted on the limit block, and the first PCB is sleeved over the limit block and engaged with the lamp panel, such that a wick of the emission lamp is aligned with an optical center of the emitter lens. An assembly method is applied to the through-beam photoelectric sensor.

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