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    Position encoder with fusion of different sensor types
    2.
    发明授权
    Position encoder with fusion of different sensor types 有权

    公开(公告)号：US12146773B2

    公开(公告)日：2024-11-19

    申请号：US17748203

    申请日：2022-05-19

    Applicant: Novanta Corporation

    Inventor： Daniel J. Holmes ,  Paul A. Remillard ,  Deepak Surendran

    IPC: G01D5/56 ,  G01D5/14 ,  G01D5/20 ,  G01D5/244 ,  G01D5/34 ,  G01D5/58

    Abstract: An opto-magnetic rotary position encoder includes a polarization optical encoder and a magnetic encoder, both configured for on-axis placement and operation with respect to a rotational axis of a rotating component. A polarization sensor digital control block and a magnetic sensor digital control block are configured and operative to combine polarizer channel position data and magnetic channel position data in a manner providing for one or more of (1) redundancy, (2) calibration, (3) monitoring performance of one channel in relation to the other channel, or (4) compensation or correction of one channel based on the other channel.

    Rotary position encoder based on polarization
    3.
    发明授权
    Rotary position encoder based on polarization 有权

    公开(公告)号：US12146771B2

    公开(公告)日：2024-11-19

    申请号：US17571958

    申请日：2022-01-10

    Applicant: Novanta Corporation

    Inventor： William G. Thorburn

    IPC: G01D5/34

    Abstract: A rotary optical position encoder includes a source of a linear-polarized light beam, a polarization-sensitive detector, and a rotating retarder disposed for rotation between the source and the detector. The retarder is configured and operative to produce a polarized exit beam whose polarization state rotates at a rate greater than a rotation rate of the retarder, thereby for increased resolution over a similar encoder using a rotating polarizer element. In an example, when polarized light is incident upon a rotating half-wave retarder, the transmitted beam's polarization axis rotates at twice the rate of retarder rotation, resulting in an electrical detector output that varies four times per revolution. Resolution is improved accordingly, as a given detected increment at the output is produced by only one-half the physical rotation increment required for a simple polarizer.

    Lower display sensor
    5.
    发明授权
    Lower display sensor 有权

    公开(公告)号：US11867538B2

    公开(公告)日：2024-01-09

    申请号：US17056770

    申请日：2020-01-15

    Applicant: HANGZHOU SINGLE MICRO ELECTRONIC CO., LTD.

    Inventor： Byung Il Min

    IPC: G01D5/34

    CPC classification number: G01D5/344

    Abstract: The disclosure relates to a lower display sensor. The lower display sensor includes: a light sensor, including a light irradiation portion that irradiates an induction light used for sensing an object located outside a display, and a light receiving portion that detects a reflected light reflected by the induction light from the object; a first sensor polarizing layer, disposed on an upper portion of the light sensor and having a polarizing axis inclined at a first angle; and a first sensor delay layer, disposed on an upper portion of the sensor polarizing layer and having a slow axis inclined at a first angle with respect to the polarizing axis.

    LINEAR PHOTONIC PROCESSORS AND RELATED METHODS
    6.
    发明公开
    LINEAR PHOTONIC PROCESSORS AND RELATED METHODS 审中-公开

    公开(公告)号：US20230289142A1

    公开(公告)日：2023-09-14

    申请号：US18111008

    申请日：2023-02-17

    Applicant: Lightmatter, Inc.

    Inventor： Nicholas C. Harris ,  Darius Bunandar ,  Michael Gould ,  Carl Ramey ,  Shashank Gupta ,  Carlos Dorta-Quinones

    IPC: G06F7/523 ,  G01D5/34 ,  G06F17/16 ,  G01D5/347 ,  G01J1/46

    CPC classification number: G06F7/523 ,  G01D5/345 ,  G06F17/16 ,  G01D5/347 ,  G01J1/46

    Abstract: Photonic processors are described. The photonic processors described herein are configured to perform matrix-matrix (e.g., matrix-vector) multiplication. Some embodiments relate to photonic processors arranged according to a dual-rail architecture, in which numeric values are encoded in the difference between a pair optical signals (e.g., in the difference between the powers of the optical signals). Relative to other architectures, these photonic processors exhibit increased immunity to noise. Some embodiments relate to photonic processors including modulatable detector-based multipliers. Modulatable detectors are detectors designed so that the photocurrent can be modulated according to an electrical control signal. Photonic processors designed using modulatable detector-based multipliers are significantly more compact than other types of photonic processors.

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