Method for determining the suitability of a transparent...

Details Method for determining the suitability of a transparent... Method for determining the suitability of a transparent...

2005-08-16

2005-08-16

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C008S506000

Reexamination Certificate

active

06929368

ABSTRACT:
The method comprises:a) placing in contact at least one principal surface of the colourless articles of the set with a solution of a fluorescent material for a sufficient time to allow penetration of the fluorescent material under the principal surface of the article;b) irradiation of the impregnated articles by means of radiation which activates the fluorescence of the fluorescent material; andc) selection of the articles in the set into two sub-sets of which the first is composed of those articles of the set which show a homogeneous fluorescence of their principal surfaces under irradiation and the second is composed of those articles of the set which show a non-homogeneous fluorescence of their principal surfaces under irradiation.Application: to opthalmic lenses.

REFERENCES:
patent: 4241102 (1980-12-01), McKinley et al.
patent: 4303701 (1981-12-01), Torgersen et al.
patent: 4320939 (1982-03-01), Mueller
patent: 4329378 (1982-05-01), Tarumi et al.
patent: 4632773 (1986-12-01), Neefe
patent: 4695399 (1987-09-01), Neefe
patent: 5201921 (1993-04-01), Luttermann et al.
patent: 0838850 (1998-04-01), None
patent: WO 00/60395 (2000-10-01), None

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