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    • 8. 发明授权
    • Apparatus with permanent magnetic lenses
    • 带永久磁性镜片的设备
    • US07285785B2
    • 2007-10-23
    • US11418730
    • 2006-05-03
    • Bart BuijsseTheodorus Hubertus Josephus BisschopsMark Theo Meuwese
    • Bart BuijsseTheodorus Hubertus Josephus BisschopsMark Theo Meuwese
    • H01J1/50H01J37/147H01J37/26
    • H01J37/143
    • The invention describes a particle-optical apparatus arranged to focus a beam (1) of electrically charged particles with the aid of two particle-optical lens systems (10, 20). The lens action is achieved by magnetic fields, which fields are generated by permanent-magnetic materials (13, 23). In contrast to magnetic lenses equipped with a coil, it is not easy in the case of lenses equipped with permanent-magnetic material to alter the focusing magnetic field with the aim of altering the optical power. In an apparatus according to the invention, the optical power of the lens systems is altered by altering the energy with which the beam (1) traverses the lens systems (10, 20). This can easily happen by altering the voltage of electrical power supplies (14, 24).
    • 本发明描述了一种粒子光学装置,其被布置成借助于两个粒子光学透镜系统(10,20)来聚焦带电粒子的束(1)。 透镜作用是通过磁场实现的,这些磁场由永磁材料(13,23)产生。 与配备有线圈的磁性透镜相比,在配备永磁材料的透镜的情况下,为了改变光焦度来改变聚焦磁场是不容易的。 在根据本发明的装置中,通过改变光束(1)穿过透镜系统(10,20)的能量来改变透镜系统的光焦度。 这可以通过改变电源的电压来容易地发生(14,24)。
    • 10. 发明授权
    • Method of generating extremely short-wave radiation, and extremely short-wave radiation source unit
    • 产生极短波辐射的方法和极短波辐射源单元
    • US06538257B2
    • 2003-03-25
    • US09726780
    • 2000-11-30
    • Theodorus Hubertus Josephus Bisschops
    • Theodorus Hubertus Josephus Bisschops
    • G21G400
    • H05G2/001B82Y10/00G03F7/70033
    • A method of generating EUV radiation is described, comprising the steps of: transporting a solid medium (33) through a source space (34) connected to a vacuum pump (35), and irradiating a portion (37) of the medium with an intense, pulsed, laser beam (41) focused on said portion of the medium, thus creating a plasma (47) which emits EUV radiation. To increase the intensity of the EUV radiation and improve the possibility to collect particles (51, 52, 53) released from the medium, at least the medium portions (37) to be irradiated have a concave shape. The method can be improved by embedding the medium in a flow of rare gas. Also described are a EUV radiation source unit for realizing the method and the application of the method in the manufacture of devices such as IC devices, and in a lithographic projection apparatus.
    • 描述了一种产生EUV辐射的方法,包括以下步骤:将固体介质(33)输送通过连接到真空泵(35)的源空间(34),并用强烈的, 脉冲激光束(41)聚焦在介质的所述部分上,从而产生发射EUV辐射的等离子体(47)。为了增加EUV辐射的强度,并提高收集释放的颗粒(51,52,53)的可能性 至少所述被照射的介质部(37)从所述介质形成为凹状。 该方法可以通过将介质嵌入到稀有气体流中而得到改善。还描述了一种EUV辐射源单元,用于实现该方法在制造诸如IC器件的器件中的方法和应用,并且在光刻投影设备 。