Patent Number: 047486465
Section: claims

1. An X-ray lithography system comprising: means for generating synchrotron beams and separating an X-ray beam thereform  a vacuum chamber for defining a passage of the X-ray beam;  a scanning mirror arranged in one section of said vacuum chamber for reflecting the X-ray beam;  means for oscillating said scanning mirror so as to scan the reflected X-ray beam in a vertical direction;  a beryllium window defined as a part of said vacuum chamber, through which the X-ray beam is irradiated into an exposure chamber in which is arranged a work piece to be exposed to the X-ray radiation; and,  means for vertically oscillating said beryllium window in such a manner that the beryllium window is shifted up and down in synchronization with the scanning operation of the X-ray beam. 2. A system as set forth in claim 1, wherein said beryllium window is relatively wide in a horizontal direction, but narrow in the vertical direction, and the thickness of said beryllium window is relatively thin. 3. A system as set forth in claim 1, wherein said beryllium window is relatively wide in a horizontal direction, but narrow in the vertical direction and has a size of 50 mm.times.5 mm, and a relatively thin thickness of, 10 .mu.m. 4. A system as set forth in claim 1, wherein the oscillating means for the mirror and the oscillating means for the window comprise each linear motor separate, said linear motors are connected to a controller.