Temperature dependent calibration of movement detection devices

    公开(公告)号:US12247846B2

    公开(公告)日:2025-03-11

    申请号:US18161616

    申请日:2023-01-30

    Abstract: An electronics system has a board with a thermal interface having an exposed surface. A thermoelectric device is placed against the thermal interface to heat the board. Heat transfers through the board from a first region where the thermal interface is located to a second region where an electronics device is mounted. The electronics device has a temperature sensor that detects the temperature of the electronics device. The temperature of the electronics device is used to calibrate an accelerometer and a gyroscope in the electronics device. Calibration data includes a temperature and a corresponding acceleration offset and a corresponding angle offset. A field computer simultaneously senses a temperature, an acceleration and an angle from the temperature sensor, accelerometer and gyroscope and adjusts the measured data with the offset data at the same temperature. The field computer provides corrected data to a controlled system.

    MICROLENS COLLIMATOR FOR SCANNING OPTICAL FIBER IN VIRTUAL/AUGMENTED REALITY SYSTEM

    公开(公告)号:US20210239992A1

    公开(公告)日:2021-08-05

    申请号:US17234968

    申请日:2021-04-20

    Abstract: A display subsystem for a virtual image generation system for use by an end user comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a collimation element mounted to a distal end of the optical fiber for collimating light from the optical fiber. The virtual image generation system further comprises a mechanical drive assembly to which the optical fiber is mounted to the drive assembly. The mechanical drive assembly is configured for displacing the distal end of the optical fiber, along with the collimation element, in accordance with a scan pattern. The virtual image generation system further comprises an optical waveguide input apparatus configured for directing the collimated light from the collimation element down the planar waveguide apparatus, such that the planar waveguide apparatus displays image frames to the end user.

    COLLIMATING FIBER SCANNER DESIGN WITH INWARD POINTING ANGLES IN VIRTUAL/AUGMENTED REALITY SYSTEM
    9.
    发明申请
    COLLIMATING FIBER SCANNER DESIGN WITH INWARD POINTING ANGLES IN VIRTUAL/AUGMENTED REALITY SYSTEM 审中-公开
    虚拟/相容现实系统中的带有指向角的收缩光纤扫描器设计

    公开(公告)号:US20170038579A1

    公开(公告)日:2017-02-09

    申请号:US15214319

    申请日:2016-07-19

    Abstract: A display subsystem for a virtual image generation system. The display subsystem comprises a planar waveguide apparatus, and an optical fiber having a distal tip affixed relative to the planar waveguide apparatus, and an aperture proximal to the distal tip. The display subsystem further comprises at least one light source coupled the optical fiber and configured for emitting light from the aperture of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted to the drive assembly. The mechanical drive assembly is configured for displacing the aperture of the optical fiber in accordance with a scan pattern. The display subsystem further comprises an optical waveguide input apparatus configured for directing the light from the aperture of the optical fiber down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to the end user.

    Abstract translation: 虚拟图像生成系统的显示子系统。 显示子系统包括平面波导装置和具有相对于平面波导装置固定的远侧末端的光纤以及靠近远端的孔。 显示子系统还包括耦合光纤并被配置为从光纤的孔径发射光的至少一个光源和光纤被安装到驱动组件的机械驱动组件。 机械驱动组件被配置为根据扫描图案移动光纤的孔径。 显示子系统还包括光波导输入装置,其被配置为将来自光纤的孔的光引导到平面波导装置下方,使得平面波导装置向最终用户显示一个或多个图像帧。

    Temperature dependent calibration of movement detection devices

    公开(公告)号:US11598651B2

    公开(公告)日:2023-03-07

    申请号:US17262991

    申请日:2019-07-23

    Abstract: An electronics system has a board with a thermal interface having an exposed surface. A thermoelectric device is placed against the thermal interface to heat the board. Heat transfers through the board from a first region where the thermal interface is located to a second region where an electronics device is mounted. The electronics device has a temperature sensor that detects the temperature of the electronics device. The temperature of the electronics device is used to calibrate an accelerometer and a gyroscope in the electronics device. Calibration data includes a temperature and a corresponding acceleration offset and a corresponding angle offset. A field computer simultaneously senses a temperature, an acceleration and an angle from the temperature sensor, accelerometer and gyroscope and adjusts the measured data with the offset data at the same temperature. The field computer provides corrected data to a controlled system.

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