Lithographic projection apparatus, reflector assembly for...

Photocopying – Projection printing and copying cameras – Step and repeat

Reexamination Certificate

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Details

C355S067000, C355S071000, C250S492200

Reexamination Certificate

active

07088424

ABSTRACT:
A lithographic projection apparatus includes a radiation system configured to form a beam of radiation from radiation emitted by a radiation source, as well as a support configured to hold a patterning device, which when irradiated by the beam of radiation provides the beam of radiation with a pattern. A substrate table is configured to hold a substrate, and a projection system is configured to image an irradiated portion of the patterning device onto a target portion of the substrate. The radiation system further includes an aperture at a distance from the optical axis, a reflector which is placed behind the aperture when seen from the source and a structure placed in a low radiation intensive region behind the aperture.

REFERENCES:
patent: 5768339 (1998-06-01), O'Hara
patent: 6064072 (2000-05-01), Partlo et al.
patent: 6285737 (2001-09-01), Sweatt et al.
patent: 6541786 (2003-04-01), Partlo et al.
patent: 6815700 (2004-11-01), Melnychuk et al.
patent: 2003/0095623 (2003-05-01), Singer et al.
patent: 2004/0150155 (2004-08-01), Partlo et al.
patent: 101 38 284 (2003-02-01), None
patent: 1 211 918 (2002-06-01), None

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