Homogenization of an LED array
    1.
    发明授权

    公开(公告)号:US12117159B2

    公开(公告)日:2024-10-15

    申请号:US18450141

    申请日:2023-08-15

    摘要: A luminaire and LED light engine are provided. The luminaire includes the LED light engine and an optical device. The LED light engine includes an LED array and a partial diffuser. The partial diffuser diffuses light that is emitted by LEDs of a selected first subset of LEDs in the LED array and leaves undiffused light that is emitted by LEDs of a second subset of LEDs in the LED array. At least some LEDs are selected for inclusion in the first subset as emitting light that produces poorly blended colors in a light beam emitted by the LED array. The optical device is configured to receive a light beam emitted from the LED light engine and emit a modified light beam.

    System and method for controlling the humidity and pressure in a luminaire

    公开(公告)号:US12085267B2

    公开(公告)日:2024-09-10

    申请号:US18045363

    申请日:2022-10-10

    摘要: A luminaire includes an enclosure, an air valve, and a chamber. The enclosure includes a sealed cover and light beam emitting components. The air valve is air coupled between the enclosure and the chamber. The chamber includes a drying agent and has an opening with a membrane completely covering the opening. The membrane passes air while reducing the passage of water droplets in the air. The air valve blocks air passage between the enclosure and the chamber when closed. A method for testing to determine adequate sealing of an enclosure of a luminaire includes closing an air valve to seal the enclosure from outside air, activating a heat-generating component, determining whether an air pressure in the enclosure increases by more than a threshold value, and sending a signal indicating a result of the determination. The method includes deactivating the heat-generating component and opening the air valve.

    Absolute position sensing system for stepper motor mechanism

    公开(公告)号:US11774075B2

    公开(公告)日:2023-10-03

    申请号:US17710271

    申请日:2022-03-31

    摘要: A luminaire includes a luminaire mechanism, a stepper motor, an absolute multi-turn rotational position sensing system, and a control system. The stepper motor moves the luminaire mechanism. The absolute multi-turn rotational position sensing system includes absolute rotational sensors that detect absolute positions of a cam indexer on the motor shaft and an indexer wheel coupled to the cam indexer. The indexer wheel rotates by a predetermined amount in response to one full rotation of the cam indexer. The control system determines an absolute position of the luminaire mechanism based on information from the absolute rotational sensors relating to the positions of the cam indexer and the indexer wheel. The control system receives a commanded position for the luminaire mechanism and causes the stepper motor to move the luminaire mechanism to the commanded position based on the absolute position of the luminaire mechanism.

    System and Method for Controlling the Humidity and Pressure in a Luminaire

    公开(公告)号:US20220325883A1

    公开(公告)日:2022-10-13

    申请号:US17851742

    申请日:2022-06-28

    IPC分类号: F21V31/00 F21V23/00

    摘要: A luminaire is provided, having first and second enclosures, a pipe, and a chamber. The first enclosure includes luminaire components that emit a light beam, has two openings, and is otherwise sealed. The second enclosure includes electronic circuits coupled to the luminaire components, has an opening, and is otherwise sealed. The first enclosure rotates relative to the second enclosure. The pipe couples an opening of the first enclosure to an opening of the second enclosure, rotates relative to the first enclosure, and is otherwise sealed. The chamber includes a drying agent, two openings, and is otherwise sealed from the external air. One opening of the chamber is rotatably coupled to an opening of the first enclosure. The other opening of the chamber is completely covered by a membrane that allows air to pass through the material while reducing the passage of water droplets in the air.

    Duv control of luminaire beam color

    公开(公告)号:US11428384B2

    公开(公告)日:2022-08-30

    申请号:US17576045

    申请日:2022-01-14

    摘要: A luminaire includes a white light LED light source emitting a light beam that that is filtered by first and second color filters. An optical device modifies the filtered light beam. A control system receives a commanded value for the optical device and responds by causing the optical device to move based on the commanded value; determining a Duv change in the light beam caused by the optical device; determining positions for the color filters based on the Duv change, a current correlated color temperature (CCT) isotherm value, and a current Duv value; and moving the color filters to their determined positions. The control system may alternatively receive a command with a Duv value and respond by determining color filters positions based on the received Duv value and a current CCT isotherm value; and moving the color filters to their determined positions.

    Removable LED module
    8.
    发明授权

    公开(公告)号:US11013079B2

    公开(公告)日:2021-05-18

    申请号:US16839707

    申请日:2020-04-03

    摘要: An LED module is provided that includes an LED circuit board having a substrate and an array of LEDs and an electrical connector mounted on the substrate. The LED module can be removed from an optical system of a luminaire by electrically uncoupling the LED circuit board from the luminaire and mechanically uncoupling the LED module from the luminaire without removing other elements of the optical system from the luminaire. A luminaire is provided that includes a controller and an optical system having an LED module. The LED module has an LED circuit board electrically coupled to the controller. The LED circuit board has a substrate and an array of LEDs mounted thereon. The LED module can be removed from the luminaire without removing other elements of the optical system by electrically uncoupling the LED circuit board from the controller and mechanically uncoupling the LED module from the luminaire.

    System and Method for Producing a Blending Light Distribution from LED Luminaires

    公开(公告)号:US20210048172A1

    公开(公告)日:2021-02-18

    申请号:US17084295

    申请日:2020-10-29

    摘要: An optical system and luminaire are provided that include a light source and a beam adjuster optical element (BAOE). The light source emits a source light beam that is received by the BAOE, which emits an adjusted light beam. The BAOE includes an outer portion that receives an outer portion of the source light beam and causes light rays of the outer portion to diverge in a corresponding outer portion of the adjusted light beam and an inner portion that receives an inner portion of the source light beam and causes light rays of the inner portion to converge in a corresponding inner portion of the adjusted light beam. The luminaire includes an actuator that moves the BAOE within the luminaire and a control system that receives a control signal via a data link and moves the BAOE in response to the control signal.