Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With auxiliary lenses movable in and out of the optical path
Patent
1982-09-24
1985-01-15
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With auxiliary lenses movable in and out of the optical path
351 41, 351 59, G02C 708, G02C 904
Patent
active
044935382
ABSTRACT:
A lateral view extender device for Homonymous Hemianopsia is disclosed. The device is particularly useful with eyeglasses having a pair of lenses and a nose bridge separating the pair of lenses. The device includes a dichroic half lens having the combined optical properties of a reflector and a see through lens and means for fixing the dichroic half lens to the nose bridge of the eyeglasses in optical registry with one lens of the pair of lenses for providing at least one optical path through the one lens of the pair of lenses and the dichroic half lens and at least one other optical path over the dichroic half lens. The dichroic lens forms an interior angle with the one lens of the pair of lenses for providing mirror images on the dichroic lens within the one optical path thereby extending the lateral view of a person suffering from Homonymous Hemianopsia proportionally to the interior angle formed between the dichroic lens and the one lens of the pair of lenses.
REFERENCES:
patent: 4155633 (1979-05-01), Benavie
Bovernick Rodney B.
Genca Samuel R.
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