Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2009-05-20
2011-11-22
Schwartz, Jordan (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S165000, C351S177000
Reexamination Certificate
active
08061837
ABSTRACT:
A method to reduce ocular chromatic aberrations using a lens or other spatial structure to selectively band-pass filter transmitted light of certain wavelengths. The ocular lens overcomes the negative effects of the wavelength band pass filter lenses while maintaining its ability to reduce the negative effects of chromatic aberration. The band-pass filter is applied in one or more concentric zones and or angular regions. The lens power is adjusted in concert with the band-pass filter wavelength to minimize aberrations. Variations include the application of the band-pass filter being applied to an angular region and no filter is applied to another. Alternatively the band-pass filter is not applied to one or more concentric ring regions and is applied to one or more angular regions. The band-pass filter can be applied to the surface of the lens or spatial structure, or applied to the lens material.
REFERENCES:
patent: 6305801 (2001-10-01), Kerns et al.
patent: 6338559 (2002-01-01), Williams et al.
patent: 7364291 (2008-04-01), Haywood et al.
patent: 7641337 (2010-01-01), Altmann
Sanders Donald R.
Sarver Edwin J.
McHale & Slavin P.A.
Schwartz Jordan
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