Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Reexamination Certificate
2007-03-27
2007-03-27
Dang, Hung Xuan (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
C351S044000, C351S046000
Reexamination Certificate
active
11215471
ABSTRACT:
An apparatus for light filtration is disclosed. The apparatus has a support structure. A lens is coupled to the support structure. The lens includes a first portion for performing light filtration, and a second portion. The second portion performs substantially less light filtration than the first portion or performs no light filtration. A distinct separation zone can be located between the first portion and the second portion. An apparatus for light filtration having an associated viewing area is disclosed. The apparatus includes a support structure, and a lens coupled to the support structure for performing light filtration. A portion of the lens is cut-out to allow for a portion of the viewing area to receive no light filtration. A method of making the same is disclosed.
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