Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1977-07-05
1979-09-18
Corbin, John K.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
65 30E, 350165, 351177, G02B 110, G02C 702
Patent
active
041681134
ABSTRACT:
There is disclosed a glass ophthalmic lens including an ion-exchanged antireflection coating. Metal oxide films including TiO.sub.2, CeO.sub.2, ZrO.sub.2, La.sub.2 O.sub.3, Nd.sub.2 O.sub.3, Al.sub.2 O.sub.3, and SiO.sub.2 when evaporated on glass lenses in a vacuum chamber by electron-beam techniques form hard optical coatings which are chemically stabile at high temperatures and allow potassium and sodium ions to traverse the thickness thereof without changing chemical composition or physical integrity thereby enhancing ability of glass lenses to be ion-exchanged in a conventional ion-exchange treatment. This allows antireflection coated glass lenses to pass impact-resistant standards ANZI Z80.1 for prescription ophthalmic lenses and USAS Z87.1 for safety lenses.
REFERENCES:
patent: 3185020 (1965-05-01), Thelen
patent: 3743491 (1973-07-01), Poole et al.
patent: 3984581 (1976-10-01), Doubler et al.
Chang Leei
Masso Jon D.
American Optical Corporation
Corbin John K.
Duggan Jeremiah J.
Schneeberger Stephen
Spencer Alan H.
LandOfFree
Glass lens with ion-exchanged antireflection coating and process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Glass lens with ion-exchanged antireflection coating and process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glass lens with ion-exchanged antireflection coating and process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-896359