Disposable ophthalmic lens

Details Disposable ophthalmic lens Disposable ophthalmic lens

2007-10-16

2007-10-16

Manuel, George (Department: 3762)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

Reexamination Certificate

active

10995589

ABSTRACT:
An ophthalmic lens with high definition, wide field of view and high magnification has, in one embodiment, a contact lens, an intermediate field lens and an image lens wherein a real image is formed inside the field lens. At least two of the lenses contribute to the magnification and three surfaces of the ophthalmic lens are aspheric to provide a better defined image. The ophthalmic lens is made disposable with high quality plastic lenses and a plastic holder. A portion of the holder changes appearance in response to change in environment to indicate that the disposable lens has been used.

REFERENCES:
patent: 4613379 (1986-09-01), Su et al.
patent: 4728183 (1988-03-01), Heacock et al.
patent: 4921205 (1990-05-01), Drew et al.
patent: 5706073 (1998-01-01), Volk
patent: 6471396 (2002-10-01), Biel

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