Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Reexamination Certificate
2007-04-26
2008-11-18
Mai, Huy K (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
C351S200000, C351S246000
Reexamination Certificate
active
07452067
ABSTRACT:
Apparatus is provided including a frame configured to be worn on a face, such that a portion of the frame is located in front of a first eye and not in front of a second eye. The apparatus also includes a first lens, including one or more first lenses, coupled to the portion of the frame, and a second lens system, including one or more second lenses, coupled to the portion. A transparency regulation element coupled to the first lens system has variable transparency, and is configured to enhance viewing through the second lens system. A power unit is configured to drive the transparency regulation element to darken the first lens system without substantially darkening at least a portion of the second lens system during a first period, and, during a second period after the first period, to not drive the transparency regulation element to darken the first lens system.
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Darby & Darby PC
Mai Huy K
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