公开(公告)号：JP2001168025A

公开(公告)日：2001-06-22

申请号：JP2000306943

申请日：2000-10-06

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ZHU XIEQUING ,  KATSAP VICTOR ,  ERIC MUNRO ,  ROUSE JOHN ANDREW ,  WASKIEWICZ WARREN K

IPC: H01J37/14 ,  H01J37/305 ,  H01L21/027

Abstract: PROBLEM TO BE SOLVED: To provide a device for projection lithography. SOLUTION: This device is provided with at least one magnetic lens. The lens is provided with a segmented magnetic liner inside. The segmented liner has the segments of magnetic materials alternate with the segments of non- magnetic materials. The liner is continued through the lens. Both the lens and the liner share the same optical axis. The liner practically removes a distortion in the magnetic field of the lens. Further, the liner provides the density of magnetic flux less than saturation within the lens.

公开(公告)号：JP2001160536A

公开(公告)日：2001-06-12

申请号：JP2000306942

申请日：2000-10-06

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ZHU XIEQUING ,  KATSAP VICTOR ,  ERIC MUNRO ,  ROUSE JOHN ANDREW ,  WASKIEWICZ WARREN K

IPC: G03F7/20 ,  H01J37/141 ,  H01J37/305 ,  H01J37/317 ,  H01L21/027

Abstract: PROBLEM TO BE SOLVED: To provide an apparatus for projection lithography. SOLUTION: This apparatus is provided with at least one doublet lens. A scattering filter with aperture is interposed between two lenses of the magnetic doublet lens. The scattering filter is located on the rear focal plane of the magnetic doublet lens system or conjugate plane equal thereto. Additionally, this apparatus is provided with two magnetic clamps interposed between two lenses of the magnetic doublet lens. These clamps are located and constituted, so as not to practically overlap the magnetic fields of the magnetic lenses. The magnetic clamp is located, so that magnetic field from the lens of the magnetic doublet lens cannot be extended to the scattering filter with aperture.