Method of marking ophhalmic lens by using laser radiation of...

Details Method of marking ophhalmic lens by using laser radiation of... Method of marking ophhalmic lens by using laser radiation of...

2005-02-22

2005-02-22

Schwartz, Jordan M (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S159000

Reexamination Certificate

active

06857744

ABSTRACT:
A method of marking an ophthalmic lens, including a step of irradiating the ophthalmic lens formed of a resin material with a laser radiation of a femtosecond pulse width, such that the laser radiation is condensed at each of at least one predetermined spot within the ophthalmic lens, to form a whitened portion at the each of the at least one predetermined spot, for thereby providing the ophthalmic lens with a marking.

REFERENCES:
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patent: 6203156 (2001-03-01), Wu et al.
patent: 20020027638 (2002-03-01), Thakrar et al.
patent: 20020103478 (2002-08-01), Gwon et al.
patent: B-62-37368 (1987-08-01), None
patent: A-64-13520 (1989-01-01), None
patent: B-5-67932 (1993-09-01), None

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