Optical: systems and elements – Lens – With field curvature shaping
Reexamination Certificate
2006-03-07
2006-03-07
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
With field curvature shaping
C359S676000, C359S754000
Reexamination Certificate
active
07009776
ABSTRACT:
An object is to obtain a projection optical system capable of projecting image information onto a screen while maintaining satisfactory optical performance, and projection apparatus using it. An image display element and the screen both are set normal to the reference optical axis of the projection optical system, and at least one optical element out of a plurality of optical elements constituting the projection optical system has an optical axis shifted from the reference optical axis or/and tilted relative to the reference optical axis.
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An office action from the Patent Office of the People's Republic of China dated Mar. 5, 2004 for Application No. 02147995.X with English Translation.
Morgan & Finnegan L.L.P.
Sugarman Scott J.
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