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    INTEGRATED MEMS SWITCHES FOR SELECTIVELY COUPLING LIGHT IN AND OUT OF A WAVEGUIDE
    3.
    发明申请
    INTEGRATED MEMS SWITCHES FOR SELECTIVELY COUPLING LIGHT IN AND OUT OF A WAVEGUIDE 审中-公开

    公开(公告)号：WO2018227007A1

    公开(公告)日：2018-12-13

    申请号：PCT/US2018/036538

    申请日：2018-06-07

    Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

    Inventor： SPECTOR, Steven J. ,  MOEBIUS, Michael G. ,  LANE, Benjamin F.

    IPC: G02B6/35 ,  G02F1/313

    Abstract: A steerable optical transmit and receive terminal includes a MEMS-based Nxl optical switching network. Each optical switch (322 - 336) in the switching network uses an electrostatic MEMS structure to selectively position a translatable optical grating (502) close to or far from an optical waveguide (510). In the close ("ON") position, light couples between the translatable optical grating (502) and the optical waveguide (510), whereas in the far ("OFF") position, no appreciable light couples between the translatable optical grating (502) and the optical waveguide (510). The translatable optical grating (502) is disposed at or near a surface of the optical switching network. Thus, the translatable optical grating (502) emits light into, or receives light from, free space. The steerable optical transmit and receive terminal also includes a lens (102) and can steer a free space optical beam in a direction determined by which port of the Nxl optical switching network is ON.

    PHOTONIC IMAGING ARRAY
    4.
    发明申请
    PHOTONIC IMAGING ARRAY 审中-公开
    光子成像阵列

    公开(公告)号：WO2018085683A1

    公开(公告)日：2018-05-11

    申请号：PCT/US2017/059976

    申请日：2017-11-03

    Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

    Inventor： LANE, Benjamin F. ,  SPECTOR, Steven J. ,  ZHOU, Alan X. ,  BROWN, Julian A. ,  MOEBIUS, Michael G.

    IPC: H01L27/146

    Abstract: A multi-beam optical phased array on a single planar waveguide layer or a small number of planar waveguide layers enables building an optical sensor that performs much like a significantly larger telescope. Imaging systems use planar waveguides created using micro- lithographic techniques. These imagers are variants of "phased arrays," common and familiar from microwave radar applications. However, there are significant differences when these same concepts are applied to visible and infrared light.

    Abstract translation: 在单个平面波导层或少量平面波导层上的多束光学相控阵能够构建光学传感器，该光学传感器的功能非常像大得多的望远镜。 成像系统使用使用微光刻技术创建的平面波导。 这些成像器是“相控阵列”的变体， 通用和熟悉微波雷达应用。 但是，将这些相同的概念应用于可见光和红外光时，存在显着差异。

    Optical Switch Controllable by Vertical Motion MEMS Structure
    8.
    发明申请
    Optical Switch Controllable by Vertical Motion MEMS Structure 审中-公开

    公开(公告)号：WO2021062206A1

    公开(公告)日：2021-04-01

    申请号：PCT/US2020/052796

    申请日：2020-09-25

    Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

    Inventor： MOEBIUS, Michael Gerhard ,  SPECTOR, Steven J. ,  COOK, Eugene Hightower ,  BERNSTEIN, Jonathan J.

    IPC: G02B6/35 ,  G02B6/12

    Abstract: MEMS-actuated optical switches can be implemented on photonic chips. These switches are compact, essentially planar, simple to implement and include only one moving MEMS component per switch. The switches exhibit low optical loss, require low power to operate, and are simple to control and easy to integrate with other optical devices. Each switch has two optical waveguides that are optically coupled in an ON switch state and not coupled in an OFF switch state. An end or a medial section of one of the two waveguides may translate between the ON and OFF states to affect the coupling. Alternatively, a coupling frustrator may translate between the ON and OFF states to affect the coupling.

    ADAPTIVE LIDAR SCANNING TECHNIQUES FOR IMPROVED FRAME RATE AND SAFETY
    9.
    发明申请
    ADAPTIVE LIDAR SCANNING TECHNIQUES FOR IMPROVED FRAME RATE AND SAFETY 审中-公开

    公开(公告)号：WO2020087016A1

    公开(公告)日：2020-04-30

    申请号：PCT/US2019/058168

    申请日：2019-10-25

    Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

    Inventor： MOEBIUS, Michael G. ,  SPECTOR, Steven J. ,  BYRNES, Steven J. ,  BESSETTE, Christopher ,  LENNOX, Scott Evan

    IPC: G01S17/08 ,  G02B6/35

    Abstract: A LiDAR system includes an array of optical emitters, an objective lens optically coupling each optical emitter to a respective unique portion of a field of view, an optical switching network coupled between a laser and the array of optical emitters and a controller coupled to the optical switching network and configured to cause the optical switching network to route light from the laser to a sequence of the optical emitters according to a dynamically varying temporal pattern and to vary the temporal pattern based at least in part on distance to an object within the field of view. The LiDAR system scans different portions of the field of view differently, such as with different laser power levels, different revisit rates and/or different scan patterns, for example based on likelihood of detecting objects of interest in the various portions or based on likely relative importance of objects likely to be found in the various portions.

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