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    • 7. 发明申请
    • Radiation Source
    • 辐射源
    • US20150261095A1
    • 2015-09-17
    • US14349883
    • 2012-09-06
    • Bastiaan Stephanus Hendricus JansenJan Frederik Hoogkamp
    • Bastiaan Stephanus Hendricus JansenJan Frederik Hoogkamp
    • G03F7/20
    • G03F7/70033H05G2/003H05G2/008
    • A radiation source suitable for providing a beam of radiation to an illuminator of a lithographic apparatus. The radiation source comprises a nozzle configured to direct a stream of fuel droplets along a trajectory towards a plasma formation location. The radiation source is configured to receive a first amount of radiation such that, in use, the first amount of radiation is incident on a fuel droplet at the plasma formation location, and such that, in use, the first amount of radiation transfers energy to the fuel droplet to generate a radiation generating plasma that emits a second amount of radiation. The radiation source further comprises a first sensor arrangement configured to measure a property of the first amount of radiation that is indicative of a focus position of the first amount of radiation; and a second sensor arrangement configured to measure a property of a fuel droplet that is indicative of a position of the fuel droplet.
    • 适用于向光刻设备的照明器提供辐射束的辐射源。 辐射源包括喷嘴,该喷嘴构造成沿着等离子体形成位置的轨迹引导燃料液滴流。 辐射源被配置为接收第一量的辐射,使得在使用中,第一量的辐射入射在等离子体形成位置处的燃料液滴上,并且使得在使用中,第一量的辐射将能量传递到 所述燃料液滴产生发射第二量的辐射的辐射产生等离子体。 辐射源还包括第一传感器装置,其配置成测量指示第一辐射量的聚焦位置的第一辐射量的特性; 以及第二传感器装置,被配置为测量指示燃料液滴位置的燃料液滴的性质。