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    • 3. 发明申请
    • Tensioner
    • 张紧器
    • US20090075768A1
    • 2009-03-19
    • US11900716
    • 2007-09-13
    • Alben D'SilvaJohn HarveyOliver Stegelmann
    • Alben D'SilvaJohn HarveyOliver Stegelmann
    • F16H7/08
    • F16H7/1281F16H7/1218F16H2007/081
    • A tensioner comprising a base, a pivot arm rotationally connected to the base, a pulley journalled to the pivot arm, a torsion spring engaged between the base and the pivot arm for biasing the pivot arm, a first damping member and a second damping member, each engaged with the base such that each cannot rotate with respect to the base but can move axially, a friction member connected to and rotationally moveable with the pivot arm, the friction member disposed between the first damping member and the second damping member, and the torsion spring exerting a normal force directly upon the first damping member, thereby pressing the first damping member and the second damping member into frictional engagement with the friction plate.
    • 张紧器,包括基座,旋转地连接到基座的枢转臂,枢轴枢转的滑轮;接合在基座和枢转臂之间以扭转枢转臂的扭转弹簧,第一阻尼构件和第二阻尼构件, 每个与所述基座接合,使得每个都不能相对于所述基座旋转,而是可以轴向移动;摩擦构件,其连接到所述枢转臂并且可旋转地移动,所述摩擦构件设置在所述第一阻尼构件和所述第二阻尼构件之间, 扭转弹簧直接施加在第一阻尼构件上的法向力,从而将第一阻尼构件和第二阻尼构件按压摩擦接合。
    • 5. 发明授权
    • Tuneable optical amplifier or optical parametric oscillator
    • 可调光学放大器或光学参量振荡器
    • US07697196B2
    • 2010-04-13
    • US10558869
    • 2004-05-31
    • John Harvey
    • John Harvey
    • G02F1/39G02F1/365G02B6/036H04B10/17
    • G02F1/395
    • A parametric process is provided for producing visible light at a second wavelength including pumping an optical fiber (4) with input light (1) at a first wavelength of less than one micron, which is longer than the second wavelength, and wherein the optical fiber (4) has zero group velocity dispersion at a third wavelength in the visible or near infrared region and longer than the first wavelength. An optical amplifier that uses the parametric process for producing light at second wavelength is also provided. The optical fiber (4) may be a photonic crystal fiber. The parametric process is tuneable by adjusting the frequency of the zero group velocity dispersion, the frequency of the first wavelength or the birefringence of the optical fiber (4).
    • 提供了用于产生第二波长的可见光的参数化处理,包括用比第二波长长的第一波长的第一波长的输入光(1)泵浦光纤(4),并且其中光纤 (4)在可见光或近红外区域的第三波长处具有零群速度色散,并且比第一波长长。 还提供了使用参数化处理来产生第二波长的光的光放大器。 光纤(4)可以是光子晶体光纤。 通过调整零组速度色散的频率,第一波长的频率或光纤(4)的双折射来调节参数过程。