Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Methods of use
Patent
1996-03-15
1999-11-02
Dang, Hung Xuan
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Methods of use
351232, A61B 300, A61B 302
Patent
active
059757027
ABSTRACT:
The present invention is directed to a system, which uses polarized light difference to improve vision. The system obtains an image at a first polarization direction. The system then obtains an image at a second orthogonal polarization direction. The second orthogonal polarization value is subtracted from the first value. The difference value is then amplified in order to provide an enhanced image.
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Engheta Nader
Pugh, Jr. Edward N.
Rowe Manoel P.
Tyo J. Scott
Dang Hung Xuan
The Trustees of the University of Pennsylvania
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