Optical: systems and elements – Compound lens system – With curved reflective imaging element
Reexamination Certificate
2006-07-18
2006-07-18
Robinson, Mark A. (Department: 2872)
Optical: systems and elements
Compound lens system
With curved reflective imaging element
C359S727000, C359S730000
Reexamination Certificate
active
07079314
ABSTRACT:
A catadioptric optical system comprising a first imaging optical system for forming an intermediate image of a first plane surface, a second imaging optical system for forming a final image of the first plane surface onto a second plane surface which is substantially parallel to the first plane surface, and a catadioptric type optical system disposed in the optical path from the first plane surface to the second plane surface and including a first reflecting surface which reflects light coming from through the first plane surface and a second reflecting surface for directing the light reflected by the first reflecting surface toward the second plane surface. At least one of the first and second reflecting surfaces is a concave reflecting surface. All of the optical elements of the catadioptric optical system are disposed on a single linear optical axis.
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Miyashita Tomohiro
Suenaga Yutaka
Yamaguchi Kotaro
Miles & Stockbridge
Nikon Corporation
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