Progressive refractive power lens and production method...

Details Progressive refractive power lens and production method... Progressive refractive power lens and production method...

2007-01-09

2007-01-09

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S161000

Reexamination Certificate

active

10509494

ABSTRACT:
A progressive power lens is conventionally so designed that a distance portion and a near portion are linked together in a successive manner, and thus framing cannot be done in a manner as to fully achieve the best optical properties of the near portion. The present invention provides, on the other hand, a progressive power lens that is designed to make the near portion closer to an eyeball without impairing the optical properties of the progressive power lens. Accordingly, both the distance portion and the near portion can be framed with the ideal fitting, and the resulting eyeglasses can be less in distortion and fluctuation.

REFERENCES:
patent: 6505934 (2003-01-01), Menezes
patent: 6712467 (2004-03-01), Kitani
patent: 6789898 (2004-09-01), Le Saux et al.
patent: 6935744 (2005-08-01), Kitani et al.
patent: 2002/0075446 (2002-06-01), Lossman et al.
patent: 2002/0101565 (2002-08-01), Yamaguchi
patent: 2003/0231282 (2003-12-01), Saux et al.
patent: WO 97/019382 (1997-05-01), None
patent: WO 97/19383 (1997-05-01), None

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