Progressive power lens

Details Progressive power lens Progressive power lens

2005-10-11

2005-10-11

Epps, Georgia (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

Reexamination Certificate

active

06953248

ABSTRACT:
A progressive power lens belonging to a series of lenses according to the present invention is provided. If a first lens and a second lens randomly chosen from the series of progressive power lenses have a common spherical refractive power Sph [diopter] in the distance portions thereof, the Sph is greater than or equal to +1, and a base curve BC1of the first lens is smaller than a base curve BC2of the second lens, the first and second lenses satisfy a condition:Wds⁡(BC1,Sph)Wns⁡(BC1,Sph)Wdt⁡(BC1,Sph)Wnt⁡(BC1,Sph)<Wds⁡(BC2,Sph)Wns⁡(BC2,Sph)Wdt⁡(BC2,Sph)Wnt⁡(BC2,Sph).(1)

REFERENCES:
patent: 5708429 (1998-01-01), Antoniol et al.
patent: 5708492 (1998-01-01), Kitani
patent: 5710615 (1998-01-01), Kitani
patent: 6412948 (2002-07-01), Yanari
patent: 6419549 (2002-07-01), Shirayanagi
patent: 2004/0189932 (2004-09-01), Shinohara et al.
patent: 0772066 (1997-05-01), None
patent: 0872755 (1998-10-01), None
patent: 1158337 (2001-11-01), None
patent: 09-090291 (1997-04-01), None
patent: 11125580 (1999-05-01), None
patent: 2001-318344 (2001-11-01), None
patent: 2001-318345 (2001-11-01), None
patent: 2002-122824 (2002-04-01), None
English Language Abstract of JP2002-122824.
English Language Abstract of JP09-090291.
English Language Abstract of JP2001-318345.

Affiliated with

Also associated with

Rating

Progressive power 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 Progressive power lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progressive power lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3468463