Variable total internal reflection electrowetting lens assembly for a detector

    公开(公告)号:US09977235B2

    公开(公告)日:2018-05-22

    申请号:US15188232

    申请日:2016-06-21

    Abstract: Disclosed are examples of optical/electrical devices including a variable TIR lens assembly having a transducer, an optical lens and an electrowetting cell coupled to an exterior wall of the lens. The electrowetting cell contains two immiscible liquids having different optical and electrical properties. One liquid has a high index of refraction, and the other liquid has a low index of refraction. At least one liquid is electrically conductive. A signal causes the high index of refraction and the low index of refraction liquids to assume various positions within the electrowetting cell along the exterior wall. The properties of the optical lens, e.g. its total internal reflectivity, change depending upon the position of the respective liquids along the exterior wall. The light detection characteristics of the assembly change to receive an input light beam over a range of inputs or over a range of fields of view.

    Lighting device with optical lens for beam shaping and refractive segments

    公开(公告)号:US10761335B2

    公开(公告)日:2020-09-01

    申请号:US16590871

    申请日:2019-10-02

    Abstract: An example lighting device includes a plurality of individually controllable illumination light sources configured to be driven by electrical power to emit light. The lighting device further includes an optical lens positioned over the illumination light sources for beam shaping or steering. The optical lens has a plurality of aspherical, spherical, planar, or freeform surfaces, including an input surface coupled to receive light from the illumination light sources and an output surface. The input surface includes an input peripheral portion and an input central portion. The output surface includes an output lateral portion, an output shoulder portion, and an output body portion. One or both of the input surface or the output surface includes facets.

    Apparatus with isolated display and lighting portions and optical passages for backlit illumination

    公开(公告)号:US10403180B2

    公开(公告)日:2019-09-03

    申请号:US15590434

    申请日:2017-05-09

    Abstract: The examples relate to implementations of an apparatus and a luminaire that use isolated display and lighting portions and optical passages for backlit general illumination through the display. The apparatus includes a general illumination light source, an optical coupling, and an optical array. A luminaire includes the apparatus and a display light board. The display light board may include display light emitters and transparent regions. The transparent regions enable general illumination light to pass through the display light board. The general illumination light source outputs general illumination light that is directed by the optical coupling toward the optical array. The optical array has optical passages and optical array supports. The optical array supports frame the display light emitters and the optical passages channel the directed general illumination light from the optical coupling around display light emitters framed near the optical array supports. Near-field shadow regions are formed under the display light emitters.

    Electrowetting cell with stepped lateral wall electrodes

    公开(公告)号:US10268036B1

    公开(公告)日:2019-04-23

    申请号:US15842072

    申请日:2017-12-14

    Abstract: A system comprises a driver and an electrowetting cell controlled by the driver that includes a substrate that includes a well filled with at least two non-mixing media. The well has lateral walls and a stepped control channel electrode matrix including multiple stepped control channel electrode arrays. The lateral walls can collectively form a continuous perimeter around the well (e.g., circle shaped). Each stepped control channel electrode array includes a number of stepped control channel electrodes formed at different longitudinal levels along a respective lateral wall. Each stepped control channel electrode is independently controllable to control a shape of the at least two non-mixing media via an electric field. Each lateral wall encloses the at least two non-mixing media inside the well.

    MicroLED with integrated controllable beam steering and/or shaping

    公开(公告)号:US10247935B2

    公开(公告)日:2019-04-02

    申请号:US15203060

    申请日:2016-07-06

    Abstract: The disclosed examples relate to various implementations of a micro-light emitting diode upon which is built a controllable variable optic to provide a chip-scale light emitting device. An example of the controllable variable optic described herein is a controllable electrowetting structure having a leak-proof sealed cell with a first fluid having a first index of refraction and a second fluid having a second index of refraction. The controllable electrowetting structure may be integrally formed on or in a substrate or semiconductor material associated with the micro-light emitting diode in alignment with one or more of the light emitting diodes of the micro-LED device to provide a controllable lighting distribution.

    ELECTROWETTING CELL CONSTRUCTS
    18.
    发明申请

    公开(公告)号:US20190049715A1

    公开(公告)日:2019-02-14

    申请号:US15674040

    申请日:2017-08-10

    CPC classification number: G02B26/005 G02B3/14

    Abstract: An electrowetting cell includes a substrate that includes a well filled with at least one fluid an external contact surface. The substrate is formed of ceramic or fiberglass mesh infused with resin. A control channel electrode connection pad and a common electrode connection pad are on the external contact surface. A first plate is coupled to the substrate to seal a first end of the well. A second plate is coupled to the substrate to seal a second end of the well. The electrowetting cell further includes a control channel electrode on the substrate configured to control a shape of the at least one fluid via an electric field, a common electrode, a control channel electrode interconnect connected to the control channel electrode and the control channel electrode connection pad, and a common electrode interconnect connected to the common electrode and the common electrode connection pad.

Patent Agency Ranking