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    • 5. 发明授权
    • Magnetic connector for electronic device
    • 电子设备用磁性连接器
    • US07517222B2
    • 2009-04-14
    • US11876733
    • 2007-10-22
    • Matthew Dean RohrbachMark Edward DouttBartley K. AndreKanye LimJohn C. DifonzoJean-Marc Gery
    • Matthew Dean RohrbachMark Edward DouttBartley K. AndreKanye LimJohn C. DifonzoJean-Marc Gery
    • H01R13/60
    • H01R13/6205G06F1/1633G06F1/18H01R13/24Y10T29/49117
    • An electrical plug and receptacle relying on magnetic force to maintain contact are disclosed. The plug and receptacle can be used as part of a power adapter for connecting an electronic device, such as a laptop computer, to a power supply. The plug includes electrical contacts, which are preferably biased toward corresponding contacts on the receptacle. The plug and receptacle each have a magnetic element. The magnetic element on one or both of the plug and receptacle can be a magnet, which is preferably a permanent rare earth magnet although electromagnets may also be used. The magnetic element on the plug or receptacle that does not include a magnet is composed of ferromagnetic material. When the plug and receptacle are brought into proximity, the magnetic attraction between the magnet and its complement, whether another magnet or a ferromagnetic material, maintains the contacts in an electrically conductive relationship.
    • 公开了一种依靠磁力保持接触的电插头和插座。 插头和插座可用作用于将电子设备(例如膝上型计算机)连接到电源的电源适配器的一部分。 插头包括电触点,其优选地被偏压到插座上的相应触点。 插头和插座各有一个磁性元件。 插头和插座中的一个或两个上的磁性元件可以是磁体,尽管也可以使用电磁体,但优选永久性稀土磁体。 不包括磁体的插头或插座上的磁性元件由铁磁材料构成。 当插头和插座接近时,磁体和其互补件之间的磁吸引力,无论是另一个磁体还是铁磁材料,都会使触点保持导电关系。
    • 6. 发明授权
    • Apparatus using induced birefringence to improve laser beam quality
    • 使用诱导双折射来提高激光束质量的装置
    • US4935932A
    • 1990-06-19
    • US232446
    • 1988-08-15
    • Bertram C. JohnsonJohn C. DiFonzoRichard L. Herbst
    • Bertram C. JohnsonJohn C. DiFonzoRichard L. Herbst
    • H01S3/08H01S3/102
    • H01S3/102H01S3/08
    • A laser beam shaper which provides polarized output with a high spatial quality, utilizing induced stress birefringence. The laser beam shaper in which light resonates along a resonant path defined by reflective surfaces includes a solid state medium, such as a Nd:YAG rod which exhibits thermally induced stress birefringence that is of known, azimuthally independent distribution in planes perpendicular to the resonant path. On either side of the medium, quarter-wave retardation plates are provided which create essentially circular polarization of the resonant light within the medium. Sandwiching the quarter-wave plates and the medium are the first and second polarizing elements, both of which are aligned along the same preferred plane. By inducing stress birefringence in the medium, an output beam is produced. A shape defined by the distribution of the birefringence is provided. With media such as YAG, the shape of the beam is round with high quality.
    • 激光束整形器,利用感应应力双折射提供具有高空间质量的偏振输出。 其中沿着由反射表面限定的谐振路径共振的激光束整形器包括固态介质,例如Nd:YAG棒,其呈现在垂直于共振路径的平面中具有已知的方位角独立分布的热致应力双折射 。 在介质的任一侧,提供四分之一波长相位差板,其产生基本上在介质内的共振光的圆偏振。 夹杂四分之一波片和介质是第一和第二偏振元件,它们都沿着相同的优选平面排列。 通过在介质中引起应力双折射,产生输出光束。 提供了由双折射分布限定的形状。 使用YAG等介质,光束的形状是高质量的圆形。