Method and apparatus for making a non spherical beveled contact

Details Method and apparatus for making a non spherical beveled contact Method and apparatus for making a non spherical beveled contact

1979-01-16

1981-10-27

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

61124L, 351160R, B24B 914, G02C 704

Patent

active

042970083

ABSTRACT:
An improved contact lens with a truly non-spherical bevel is disclosed, along with a method and apparatus for making same. Lenses, including the theoretically perfect "ski" periphery are consistently produced and reproduced by bringing the posterior surface of the unfinished lens into contact with a rotating abrasive coated working surface. The working surface or tool is size selected to match the unfinished lens and desired fitting dimensions. The working surface is formed on a tool body having a central axis and having a smooth three-dimensional curvilinear surface configuration generated by the rotation of an S-shaped curve produced by the circumferential arcs of two tangential conic-section curves about the central axis.

REFERENCES:
patent: 3187338 (1965-06-01), Neefe
patent: 3227507 (1966-01-01), Feinbloom
patent: 3283446 (1966-11-01), Feinbloom
patent: 3482906 (1969-12-01), Volk
patent: 3535825 (1970-10-01), Volk
patent: 3871813 (1975-03-01), Cappeli

Affiliated with

Also associated with

Rating

Method and apparatus for making a non spherical beveled contact 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 and apparatus for making a non spherical beveled contact , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for making a non spherical beveled contact will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-276973