Photocopying – Projection printing and copying cameras – Step and repeat
Reexamination Certificate
2011-06-07
2011-06-07
Nguyen, Hung Henry (Department: 2882)
Photocopying
Projection printing and copying cameras
Step and repeat
C355S067000
Reexamination Certificate
active
07956984
ABSTRACT:
An apparatus includes a plurality of projection optical systems, each including optical elements arranged in an optical path between a first plane and a second plane and forming a radiation pattern from the first plane onto an exposure field on the second plane via the optical elements. A movable portion is disposed in the side of the second plane with respect to the projection optical systems, which holds an object to be moved relative to the exposure field in a first direction in the second plane during scanning exposure of the object in which the radiation patterns are formed on the object as the object is moved in the first direction. The projection optical systems may include an adjustable wedge prism. The projection optical systems may include first and second optical units, optical axes of the first and second optical units being decentered from each other.
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SPIE vol. 922 Optical/Laser Microlithography (1988), “
Chiba Hiroshi
Kato Kinya
Kato Masaki
Tanaka Masashi
Nguyen Hung Henry
Nikon Corporation
Oliff & Berridg,e PLC
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