Glasses

Details Glasses Glasses

2008-10-27

2009-12-29

Dang, Hung X (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Lens pivots in and out of optical path

C351S041000

Reexamination Certificate

active

07637608

ABSTRACT:
Glasses, comprising a frame and a lens system for the correction of defective vision, which comprises at least one pair of lenses formed by a first lens and a second lens, which first and second lens, viewed in the path of vision, are disposed one behind the other and are mutually adjustable for realizing a desired degree of correction of vision, wherein the first lens is position-invariantly received in the frame, and the second lens can be moved longitudinally along the first lens.

REFERENCES:
patent: 1206457 (1916-11-01), Mills
patent: 3305294 (1967-02-01), Alvarez
patent: 5162824 (1992-11-01), Klemka
patent: 5644374 (1997-07-01), Mukaiyama et al.
patent: 7175274 (2007-02-01), Markson
patent: 2007/0091253 (2007-04-01), Chao
patent: 1433415 (2004-08-01), None
patent: 1491937 (2007-09-01), None

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