Optical: systems and elements – Lens – With field curvature shaping
Reexamination Certificate
2005-02-08
2005-02-08
Lester, Evelyn A. (Department: 2873)
Optical: systems and elements
Lens
With field curvature shaping
C359S663000, C359S679000, C359S726000, C359S753000, C353S031000, C353S037000, C353S077000
Reexamination Certificate
active
06853493
ABSTRACT:
Projection lenses for use with pixelized panels (PP) are provided. The projection lenses have a negative first unit (U1) separated from a positive second unit (U2) by a reflective surface (RS) which folds the lens' optical axis. The lenses are telecentric on the short conjugate side, have a large field of view in the direction of the long conjugate, and have low aberration levels, including, in particular, low levels of lateral color.
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Zemax Development Corporation's documentation entitled “GHO—Ghost Image Analysis,” San Diego, California, 9-49 through 9-54 and 9-61 through 9-76, published prior to January 7, 2003.
3M Innovative Properties Company
Lester Evelyn A.
LandOfFree
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