Scattering attenuator
    32.
    发明授权
    Scattering attenuator 失效
    散射衰减器

    公开(公告)号:US06753953B2

    公开(公告)日:2004-06-22

    申请号:US10002013

    申请日:2001-10-26

    Inventor: Bernd Nebendahl

    CPC classification number: G02B6/266 G02B6/32

    Abstract: An optical attenuator for attenuating the intensity of an input light beam comprises a scattering element for scattering the input light beam into a range of scattering directions. A beam collecting device is arranged in the range of scattering directions for collecting a portion of the scattered light as an output beam. The attenuation of the output beam with respect to the input light beam is dependent on the portion of the collected light relative to the range of scattering directions. The scattering element is provided with a varying scattering angle distribution in order to control the attenuation.

    Abstract translation: 用于衰减输入光束强度的光衰减器包括用于将输入光束散射到散射方向范围的散射元件。 在散射方向的范围内布置有光束收集装置,用于收集散射光的一部分作为输出光束。 输出光束相对于输入光束的衰减取决于所收集的光的相对于散射方向范围的部分。 散射元件具有变化的散射角分布,以便控制衰减。

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