Electrowetting cells with high transmissivity fluids

    公开(公告)号:US10810951B2

    公开(公告)日:2020-10-20

    申请号:US15887219

    申请日:2018-02-02

    摘要: The examples relate to various implementations of an electrowetting cell and optical devices including the electrowetting cell. The electrowetting cell includes a conductive fluid and a non-conductive fluid having refractive indices that differ by at least 0.2. In an example, the fluids of the electrowetting cell are capable of providing at least 50% transmissivity to radiation in a preselected band within the x-ray, ultraviolet, visible, infrared, microwave, or radiowave spectrums after 1 hour at a temperature of 40° C. and/or after 1 hour of an exposure at an average illuminance of at least 80,000 lux. In another example, the non-conductive fluid is selected from a compound of Formula 1, 2, or 3: in which R1 to R9 and R11 to R16 are independently selected from H, a saturated or unsaturated, branched or linear C1 to C6 alkyl group, and a phenyl group; R and R10 are aromatic groups, optionally substituted by one or more heteroatoms selected from N, O, and Si, and, in Formula 1, R1 and R are optionally linked to one another so as to define a ring; and n is an integer from 1 to 5. The electrowetting cell may be coupled to an optical device, such as a light sensor or light emitting device.

    Reconfigurable optical fiber spectrometer in a lighting device

    公开(公告)号:US10753792B2

    公开(公告)日:2020-08-25

    申请号:US16572989

    申请日:2019-09-17

    摘要: A spectrometer-equipped lighting device detects substances in an environment around the device. A fiber detector is optically coupled to receive light from a light source. The fiber detector has a bare area from which emanates an evanescent wave of light surrounding an exterior of the fiber detector to interact with the environment in which the fiber detector is exposed. The spectrometer, optically coupled to an opposite end of the fiber detector, detects the light output and in response, generates signals representative of the spectral power distribution of the light of the evanescent wave that has interacted with the surrounding environment. A controller analyzes the spectrometer generated signals and initiates action based on the analysis of the generated signals or outputs a report indicating an environmental condition detected by the spectrometer-equipped device.

    Lighting wall controller with configurable user interface

    公开(公告)号:US10732787B2

    公开(公告)日:2020-08-04

    申请号:US15916936

    申请日:2018-03-09

    发明人: Jeffrey M. Scott

    摘要: A wall controller controls lighting in an area based upon a configurable user interface. The wall controller includes touch and gesture sensing electrodes mounted to a substrate, and an overlay mounted over the touch and gesture sensing electrodes. The overlay includes firmware to define lighting functions relative to a touch or motion gesture on the overlay. A processor is coupled to receive at least one of sensing signals based upon user touch inputs on the overlay, or sensing signals based upon user motion gestures near the overlay. Programming in a memory configures the processor to analyze the received sensing signals in accordance with the firmware of the overlay, generate a lighting control message based upon the analyzed sensing signals, and transmit the lighting control message to one or more luminaires in an area of the wall controller to control an output of the one or more luminaires.

    Dynamic refractive index control for beam shaping utilizing variable electrokinetic optic

    公开(公告)号:US10732479B2

    公开(公告)日:2020-08-04

    申请号:US15993762

    申请日:2018-05-31

    摘要: An example fighting device has a luminaire and a driver circuit. The luminaire includes a variable electrokinetic optic that includes an electrokinetic fluid between a transparent substrate and a diffuser. The electrokinetic fluid includes a carrier fluid mixed with charged particles. The variable electrokinetic optic further includes a transparent substrate electrode and a diffuser electrode configured to generate an electric field in the electrokinetic fluid in response to a control voltage applied across the transparent substrate electrode and the transparent diffuser electrode. The electric field attracts the charged particles to adjust an effective birefringence of the variable electrokinetic optic. Increasing the effective birefringence increases an output beam angle of the emitted illumination lighting relative to an input beam angle. The driver circuit selectively controls the applied control voltage.

    Distributed processing using resources of intelligent lighting elements of a lighting system

    公开(公告)号:US10721807B2

    公开(公告)日:2020-07-21

    申请号:US15177782

    申请日:2016-06-09

    摘要: An exemplary lighting system utilizes intelligent system elements, such as lighting devices, user interfaces for lighting control or the like and possibly sensors, and utilizes network communication amongst such intelligent system elements. Some processing functions performed within the system are implemented on a distributed processing basis, by two or more of the intelligent elements of the lighting system. Distributed processing, for example, may enable use of available processor and/or memory resources of a number of intelligent system elements to process a particular job. Another distributed processing approach might entail programming to configure two or more of the intelligent system elements to implement multiple instances of a server functionality with respect to client functionalities implemented on intelligent system elements.

    Recessed luminaire mounting assembly for junction box

    公开(公告)号:US10704771B2

    公开(公告)日:2020-07-07

    申请号:US16048868

    申请日:2018-07-30

    IPC分类号: F21V21/04 F21V21/088 F21S8/02

    摘要: A lighting assembly for illuminating an architectural space includes a mounting bracket with an axial portion, a trim flange ring including an outer surface, and a light fixture including a flange with an external surface such that the lighting assembly has an installed configuration. The axial portion includes an annular cross-section and at least one open end. In the installed configuration, at least a portion of the light fixture is disposed inside the axial portion. In the installed configuration, the trim flange ring is disposed between the mounting bracket and the light fixture. In the installed configuration, the outer surface faces the architectural space such that the outer surface is a concentric ring around the external surface of the flange of the light fixture.

    Lighting control system commissioning using lighting control system sensors

    公开(公告)号:US10694606B1

    公开(公告)日:2020-06-23

    申请号:US16571674

    申请日:2019-09-16

    摘要: A method for commissioning a lighting control system includes selecting a control device for a lighting group in the lighting control system, and receiving, via the control device for the lighting group, a first instruction to the lighting control system. The first instruction may cause devices in the lighting control system to enter a pairing mode. A first device to be associated with the control device may be selected based on motion of a person in a vicinity of the first device detected by a sensor. The first device may be associated with the lighting group for a specified space based on the motion detected by the sensor. A second instruction may be received via the control device for the lighting group and, in response to the second instruction, the lighting control system may exit the pairing mode.