Method for curing a lens-forming fluid

Details Method for curing a lens-forming fluid Method for curing a lens-forming fluid

1998-02-19

2000-08-15

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 22, 264 25, 264 404, 425140, 425352, 425808, B29D 1100

Patent

active

061031488

ABSTRACT:
A method for curing a lens-forming fluid, including exposing the lens-forming fluid to an ultra-violet light, wherein the exposure time is between twenty seconds and thirty minutes, which can completely cure the fluid. The exposure can occur by placing the lens-forming fluid intermediate a plurality of ultraviolet light sources, in which the intensity of the ultra-violet light is at least 1.2.times.10.sup.-2 watts per square centimeter at a wavelength of 350 nanometers. The lens-forming fluid preferably is a monomer. The prior art, in contrast, requires significantly longer exposure times to cure monomer or other lens-forming fluids.

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Ophthalmic Optic Files, Sections 1 through 6, produced by Essilor (Undated) .

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