Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1987-10-26
1990-01-02
Sugarman, Scott J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
G02C 704
Patent
active
048909130
ABSTRACT:
Bifocal contact lenses are described wherein at least the major viewing area is divided into a plurality of near and distant viewing zones, each near vision zone being adjacent to a distant viewing zone and there being between about 2 and 8 zones of each power in said major viewing area, each zone being capable of operating as a lens independently of the other zones and wherein the relative areas of the zones are such that in use substantially equal amounts of light enter the eye through the near and distant vision zones.
REFERENCES:
patent: 3037425 (1962-06-01), De Carle
patent: 3794414 (1974-02-01), Wesley
patent: 4162122 (1979-07-01), Cohen
patent: 4338005 (1982-07-01), Cohen
patent: 4340283 (1982-07-01), Cohen
Jenkins, F. A. and White, H. E., Fundamentals of Physical Optics; McGraw-Hill Book Company, Inc., (N.Y. & London, 1937).
LandOfFree
Zoned multi-focal contact lens does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Zoned multi-focal contact lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zoned multi-focal contact lens will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1380842