Ultraviolet cycling oven for polymerization of contact lenses

Details Ultraviolet cycling oven for polymerization of contact lenses Ultraviolet cycling oven for polymerization of contact lenses

1994-06-10

1997-01-28

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

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

264494, 264 406, 264 407, 425143, 4251744, 425150, B29D 1100

Patent

active

055975194

ABSTRACT:
A method and apparatus for molding contact lenses by curing polymerizable compositions in suitably dimensioned molds using ultraviolet or other polymerization-inducing radiation and heat. The molds are moved along a source of radiation such that the intensity of the radiation to which the composition is exposed rises and falls several times, thereby achieving superior results by balancing the initiation and the propagation of the polymerization.

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