Variable spectacle lens

Details Variable spectacle lens Variable spectacle lens

1998-06-09

2000-03-21

Sugarman, Scott J.

Optical: systems and elements

Lens

Fluid

351 41, 351168, G02B 106, G02C 706

Patent

active

060409479

ABSTRACT:
A liquid-filled variable focal length lens of the type which has a distensible membrane as one of the lens surfaces, and a membrane support member to support the perimeter of the free area of the membrane. By using a membrane support member having a toroidally shaped portion, the membrane is supported such that it has a circular free area irrespective of the shape of the perimeter of the lens. The cross sectional shape of the toroidal portion of the support member is preferably approximately an arc of a circle, and the perimeter of the free area of the membrane is maintained tangent thereto.

REFERENCES:
patent: 3598479 (1971-08-01), Wright
patent: 4261655 (1981-04-01), Honigsbaum
patent: 4913536 (1990-04-01), Barnea
patent: 5138494 (1992-08-01), Kurtin
patent: 5526067 (1996-06-01), Cronin et al.
patent: 5684637 (1997-11-01), Floyd

Affiliated with

Also associated with

Rating

Variable spectacle lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable spectacle lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable spectacle lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-735237