Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1984-10-23
1987-07-14
Corbin, John K.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
350417, 351159, 351166, 351177, G02C 702, G02C 710
Patent
active
046799184
ABSTRACT:
A composite glass/plastic ophthalmic lens is disclosed. The lens consists of a thin layer of glass, preferably photochromic, adhered to the front of a plastic layer, by a highly elastic adhesive. The rear surface of the glass has a different radius than the front surface of the plastic so that the space between the lenses forms a tapered gap which is filled by the elastic adhesive. The edge thickness of the elastic adhesive is sufficient to insure that the increase in diameter of the plastic layer with respect to the diameter of the glass layer due to differences in the thermal expansion characteristic of the glass and the plastic will not damage the composite lens even over a temperature range greater than 300.degree. F. The glass layer is shaped to have a power which compensates for differences in the index of refraction of the glass, adhesive and plastic layer, and which compensates for the optical powers produced by the tapered adhesive layer, so that the composite lens can be finished to prescription as though it were an all-plastic lens.
REFERENCES:
patent: T739939 (1965-09-01), Christensen
patent: 2092789 (1936-01-01), Tillyer
patent: 2263249 (1939-09-01), Rogers
patent: 2287546 (1938-02-01), Binda
patent: 2340109 (1944-01-01), D'Alello
patent: 2356250 (1937-12-01), Land
patent: 2361589 (1940-08-01), Bennett et al.
patent: 2363422 (1942-07-01), Hutchings
patent: 2409356 (1944-04-01), Hutchings
patent: 2453665 (1943-12-01), Kropa
patent: 2596863 (1949-08-01), Moulton et al.
patent: 2788306 (1957-04-01), Cox et al.
patent: 2962471 (1960-11-01), Lang et al.
patent: 3258356 (1962-02-01), Caldwell et al.
patent: 3406086 (1965-03-01), Foster
patent: 3471356 (1964-09-01), Kolb et al.
patent: 3508987 (1964-05-01), Burkley et al.
patent: 3533897 (1967-06-01), Robbins, Jr. et al.
patent: 3551344 (1970-12-01), Gardlund et al.
patent: 3574030 (1968-07-01), Callander et al.
patent: 3582455 (1968-06-01), De Lap et al.
patent: 3657057 (1972-04-01), Shorr et al.
patent: 3771858 (1973-11-01), Bivens
patent: 3808077 (1974-04-01), Rieser et al.
patent: 3922327 (1975-11-01), Howden
patent: 3970362 (1976-07-01), Laliberte
patent: 3982822 (1976-09-01), Conder et al.
patent: 3998531 (1976-12-01), Marzouk
patent: 4143181 (1979-03-01), Cahn et al.
patent: 4161560 (1979-07-01), Kienel
patent: 4168339 (1979-09-01), Kerko et al.
patent: 4174240 (1979-11-01), Muller et al.
patent: 4204025 (1980-05-01), LeGrand et al.
patent: 4227950 (1980-10-01), Spycher
patent: 4230769 (1980-10-01), Goossens
patent: 4243719 (1981-01-01), Holmes
patent: 4261656 (1981-04-01), Wu
patent: 4264156 (1981-04-01), Spycher
patent: 4264658 (1981-04-01), Tobias et al.
patent: 4268134 (1981-05-01), Gulati et al.
patent: 4300821 (1981-11-01), Mignen
patent: 4311762 (1982-01-01), Spycher et al.
patent: 4364786 (1982-12-01), Smith, Jr. et al.
patent: 4417790 (1983-11-01), Dawson e al.
patent: 4427743 (1984-01-01), Katsuki et al.
Corbin John K.
Sugarman Scott J.
LandOfFree
Ophthalmic glass/plastic laminated lens having photochromic char does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ophthalmic glass/plastic laminated lens having photochromic char, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ophthalmic glass/plastic laminated lens having photochromic char will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1425162