Method of making optical waveguides from glass fibers
    6.
    发明授权
    Method of making optical waveguides from glass fibers 失效
    从玻璃纤维制造光波导的方法

    公开(公告)号:US3981705A

    公开(公告)日:1976-09-21

    申请号:US574437

    申请日:1975-05-05

    Abstract: A procedure is described for drawing glass fibers which are particularly suitable for use in optical waveguides. A laser is used as a souce of heat and an optical system is provided for focusing an annular beam around a glass preform from which the glass fiber is drawn. Particular attention is devoted to the optical focusing system to provide highly uniform distribution of heat and insure very precise short and long term fiber diameter control and precise control of the optical properties (freedom from scattering centers, profile of optical properties across the diameter) of the fiber. Precise diameter control of glass fibers for optical waveguides is highly desirable because it minimizes optical losses and facilitates low-loss splicing of individual glass fibers.

    Abstract translation: 描述了用于绘制特别适用于光波导的玻璃纤维的方法。 使用激光作为热源,并且提供光学系统用于将环形束聚焦在玻璃纤维被拉制的玻璃预制件周围。 特别注意光学聚焦系统,以提供高度均匀的热分布,并确保非常精确的短期和长期光纤直径控制以及精确控制光学性能(不受散射中心,光学性质在整个直径上的分布) 纤维。 用于光波导的玻璃纤维的精确直径控制是非常需要的,因为它最小化光学损耗并且促进单个玻璃纤维的低损耗拼接。

    Positioning system that uses signals from a point source
    7.
    发明申请
    Positioning system that uses signals from a point source 审中-公开
    使用点源信号的定位系统

    公开(公告)号:US20060061469A1

    公开(公告)日:2006-03-23

    申请号:US11231540

    申请日:2005-09-21

    Abstract: Systems for tracking, containing, and controlling moving objects such as vehicles, boats, airplanes, animals, and people use wireless RF or microwave signals to calculate position within a predefined boundary. The system has antennas in a location, and has processing for determining location either on a device on the mobile device or at a base station. The boundary can be arbitrary and can be learned during a set-up process.

    Abstract translation: 用于跟踪,包含和控制诸如车辆,船只,飞机,动物和人员的移动物体的系统使用无线RF或微波信号来计算预定边界内的位置。 该系统在一个位置具有天线,并且具有用于在移动设备上或在基站上的设备上确定位置的处理。 边界可以是任意的,并且可以在设置过程中学习。

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