Method of controlling the ultraviolet polymerization of spin cas

Details Method of controlling the ultraviolet polymerization of spin cas Method of controlling the ultraviolet polymerization of spin cas

1984-08-17

1985-08-13

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

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

264 21, 264 22, 264 25, 4251744, B29D 1100

Patent

active

045349150

ABSTRACT:
A method of controlling the polymerization of spin cast hydrogel contact lenses by controlling the shape of the ultraviolet light beam across the rotating surface of the spin cast lens. To provide polymerization which progresses smoothly from the center to edge of the rotating lens.

REFERENCES:
patent: 2524862 (1950-10-01), White
patent: 2525664 (1950-10-01), Gadsby et al.
patent: 3660545 (1972-05-01), Wichterle
patent: 4113224 (1978-09-01), Clark et al.
patent: 4166088 (1979-08-01), Neefe
patent: 4382902 (1983-05-01), Feurer

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