Mold for producing polarizing optical devices

Details Mold for producing polarizing optical devices Mold for producing polarizing optical devices

1976-07-19

1978-05-23

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425808, 249 84, 249 91, B29C 500, B29D 1100

Patent

active

040908305

ABSTRACT:
A mold for casting a polarizing ophthalmic lens from a fluid thermosetting monomeric resin wherein the mold unit includes convex and a concaved mold elements spaced apart by a peripheral gasket and includes therebetween a polarizing sheet defining first and second molding compartments thereabout such that the polarizing sheet while forming a part of the mold structure is cast in situ in the ophthalmic lens and becomes an integral part thereof.

REFERENCES:
patent: 2193935 (1940-03-01), Mulcahy
patent: 3211811 (1965-10-01), Lanman
patent: 3431335 (1969-03-01), Henning
patent: 3551956 (1971-01-01), Rosier
patent: 3711417 (1973-01-01), Schuler
patent: 3786119 (1974-01-01), Ortlieb
patent: 3833289 (1974-09-01), Schuler

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