RADIATION BEAM APPARATUS
    1.
    发明申请
    RADIATION BEAM APPARATUS 审中-公开
    辐射光束装置

    公开(公告)号:WO2016083120A2

    公开(公告)日:2016-06-02

    申请号:PCT/EP2015/076179

    申请日:2015-11-10

    CPC classification number: G03F7/70158 G02B5/1828 G02B6/29314 G03F7/70266

    Abstract: An adjustable diffraction grating comprises: an optical element and a distortion mechanism. The optical element has an optical surface for receiving an input radiation beam. The optical element is provided with a plurality of closed channels below the optical surface, above each closed channel the optical surface being formed from a membrane of material. The distortion mechanism comprises one or more actuators that are operable to distort the membranes over the closed channels so as to control the shape of the optical surface and to form a periodic structure on the optical surface which acts as a diffraction grating such that the input radiation beam is diffracted from the optical element to form a plurality of angularly separated sub-beams.

    Abstract translation: 可调节衍射光栅包括:光学元件和失真机构。 光学元件具有用于接收输入辐射束的光学表面。 光学元件在光学表面下方设置有多个闭合通道,每个闭合通道上方,光学表面由材料膜形成。 变形机构包括一个或多个致动器,其可操作以使膜在闭合通道上变形,以便控制光学表面的形状并且在作为衍射光栅的光学表面上形成周期性结构,使得输入辐射 光束从光学元件衍射以形成多个角度分离的子光束。

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