Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1987-06-19
1989-06-13
Arnold, Bruce Y.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351168, G02C 706
Patent
active
048386758
ABSTRACT:
A method for optimizing the performance of an ophthalmic progressive lens having a distance viewing zone, a near viewing zone, and an intermediate zone, and the resulting optimized lens are provided. The surface of the lens to be optimized, which has at least one quantitative performance characteristic, is represented by a mathematical base function which is com=bined with a selected optimization function. The optimization function includes at least one adjustable parameter and may have at least one boundary condition imposed on it along the boundary of a selected subregion of the lens surface. A quantitative merit figure of the combination of the base and optimization functions, which is related to the at least one performance characteristic by a selected merit function, is optimized through the at least one adjustable parameter of the optimization function. Through the optimization, there is obtained an improved surface function which represents the surface of the improved progressive lens. A lens surface responsive to the improved surface function is then formed.
REFERENCES:
patent: 4240719 (1980-12-01), Guilino et al.
patent: 4274717 (1981-01-01), Davenport
patent: 4315673 (1982-02-01), Guilino et al.
patent: 4362368 (1982-12-01), van Ligten
patent: 4418992 (1983-12-01), Davenport et al.
patent: 4426139 (1984-01-01), van Ligten et al.
patent: 4514061 (1985-04-01), Winthrop
patent: 4537479 (1985-08-01), Shinohara et al.
patent: 4592630 (1986-06-01), Okazaki
patent: 4606622 (1986-08-01), Fueter et al.
patent: 4606626 (1986-08-01), Shinohara
patent: 4640593 (1987-02-01), Shinohara
patent: 4676610 (1987-06-01), Barkan et al.
Numerical Methods of Scientists and Engineers 2d Ed., Dover Publications, Inc., New York, 1973, Chapter 43-R. W. Hamming.
Barkan Eric F.
Sklar David H.
Arnold Bruce Y.
Callaghan Terry S.
Sola International Holdings Ltd.
LandOfFree
Method for improving progressive lens designs and resulting arti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for improving progressive lens designs and resulting arti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for improving progressive lens designs and resulting arti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1272548