MEMBRANE CLEANING APPARATUS
    16.
    发明申请

    公开(公告)号:WO2021073799A1

    公开(公告)日:2021-04-22

    申请号:PCT/EP2020/073669

    申请日:2020-08-25

    Abstract: A membrane cleaning apparatus for removing particles from a membrane comprises: a membrane support for supporting the membrane; and a pressure pulse generating mechanism including one or more laser energy sources configured to generate a pressure pulse in a gas. The one or more energy laser sources may be focused to generate a pressure pulse in a gaseous atmosphere. The pressure pulse serves to dislodge particles on the membrane.

    TRANSMISSIVE DIFFUSOR
    19.
    发明申请

    公开(公告)号:WO2020078625A1

    公开(公告)日:2020-04-23

    申请号:PCT/EP2019/074447

    申请日:2019-09-13

    Abstract: A first diffusor configured to receive and transmit radiation comprises a plurality of layers, each layer arranged to change an angular distribution of EUV radiation passing through it differently. A second diffusor configured to receive and transmit radiation comprises: a first layer and a second layer. The first layer is formed from a first material, the first layer comprising a nanostructure on at least one surface of the first layer. The second layer is formed from a second material adjacent to the at least one surface of the first layer such that the second layer also comprises a nanostructure. The second material has a refractive index that is different to a refractive index of the first layer. The diffusor first and second diffusors may be configured to receive and transmit EUV radiation.

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