TOPOGRAPHY MEASUREMENT SYSTEM
    3.
    发明申请

    公开(公告)号:US20180373171A1

    公开(公告)日:2018-12-27

    申请号:US16061947

    申请日:2016-11-30

    Abstract: A topography measurement system includes a radiation source; a first grating; imaging optics; a movement mechanism; detection optics; a second grating; and a detector. The radiation source is configured to generate a radiation beam and includes a light emitting diode to produce to the radiation. The first grating is configured to pattern the radiation beam. The imaging optics is configured to form a first image of the first grating at a target location on a substrate. The movement mechanism is operable to move the substrate relative to the image of the first grating such that the target location moves relative to the substrate. The detection optics is configured to receive radiation from the target location of the substrate and form an image of the first image at the second grating. The detector is configured to receive radiation transmitted through the second grating and produce an output signal.

    WAVELENGTH COMBINING OF MULTIPLE SOURCE
    5.
    发明申请

    公开(公告)号:US20190049864A1

    公开(公告)日:2019-02-14

    申请号:US16078699

    申请日:2017-02-07

    Abstract: A light combiner (500) for use in a metrology tool includes a plurality of light sources (LED 1, LED 2, LED 3, LED 4, LED 5), a first filter (502), and a second filter (504). The first filter is designed to substantially reflect light generated from a first source of the plurality of light sources, and to substantially transmit light generated from a second source of the plurality of light sources. The second filter is designed to substantially reflect light generated from the first source and the second source of the plurality of light sources, and to substantially transmit light generated from a third source of the plurality of light sources. An angle of incidence of the light generated from the first source on a surface of the first filter is less than 30 degrees.

    METHOD OF MANUFACTURE OF A CAPILLARY FOR A HOLLOW-CORE PHOTONIC CRYSTAL FIBER

    公开(公告)号:US20210141150A1

    公开(公告)日:2021-05-13

    申请号:US17088201

    申请日:2020-11-03

    Abstract: A method for manufacturing a capillary usable as part of a hollow-core photonic crystal fiber. The method includes obtaining a capillary having capillary wall including a first wall thickness; and chemically etching the capillary wall to reduce the wall thickness of the capillary wall. During performance of the etching, a control parameter is locally varied along the length of the capillary, the control parameter relating to reactivity of an etchant used in the etching, so as to control the etched wall thickness of the capillary wall along the capillary length. Also disclosed is a capillary manufactured by such a method and various devices including such a capillary.

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