Method of producing plastic lenses

Claim 1

THE METHOD OF PRODUCING A HARDENENED, OPTICAL LENS FROM A THERMOSETTING MONOMERIC RESIN HAVING THE CHARACTERISTICS OF DI-ETHYLENE GLYCOL BIS (ALLYL CARBONATE) AND SAID LENS HAVING CURVED MAJOR SURFACES IN OPPOSED RELATIONSHIP, SAID METHOD COMPRISING MIXING A PREDETERMINED QUANTITY OF SAID MATERIAL WITH APPROXIMATELY 2% TO 5% BY WEIGHT OF A CATALYST THEREFOR; FILTERING THE MIXTURE TO REMOVE IMPURITIES THEREFROM; SUPPORTING THE FILTERED MIXTURE IN A FORM SUBSTANTIALLY CONFORMING TO THE CONFIGURATION OF SAID LENS; IMMERSING THE SUPPORTED MIXTURE IN A LIQUID BATH AND GRADUALLY RAISING THE TEMPERATURE OF THE LIQUID FROM APPROXIMATELY 100*F. TO ABOUT 150*F. WITHIN A PERIOD OF APPROXIMATELY 11 HOURS AND MAINTAINING THE TEMPERATURE AT APPROXIMATELY 150*F. FOR ABOUT 5 HOURS TO POLYMERIZE SAID AMOUNT OF THE MIXTURE; REMOVING THE POLYMERIZED MATERIAL FROM SAID LIQUID; SUBJECTING THE LENS PRESENTING POLYMERIZEDD MATERIAL TO AN ATMOSPHERE OF A HEATED GAS HAVING A TEMPERATURE WITHIN THE RANGE OF APPROXIMATELY 235*F. TO ABOUT 245*F. AND WHILE SAID OPPOSED MAJOR CURVED SURFACES OF THE POLYMERIZED MATERIAL ARE FREE FROM EXTERNAL SUPPORT; AND REMOVING THE POLYMERIZED LENS PRESENTING MATERIAL FROM SAID ATMOSPHERE UPON FINAL CURING AND HARDENING OF THE SAME.

Claim 2

THE METHOD OF PRODUCING A HARDENENED, OPTICAL LENS FROM A THERMOSETTING MONOMERIC RESIN HAVING THE CHARACTERISTICS OF DI-ETHYLENE GLYCOL BIS (ALLYL CARBONATE) AND SAID LENS HAVING CURVED MAJOR SURFACES IN OPPOSED RELATIONSHIP, SAID METHOD COMPRISING MIXING A PREDETERMINED QUANTITY OF SAID MATERIAL WITH APPROXIMATELY 2% TO 5% BY WEIGHT OF A CATALYST THEREFOR; FILTERING THE MIXTURE TO REMOVE IMPURITIES THEREFROM; SUPPORTING THE FILTERED MIXTURE IN A FORM SUBSTANTIALLY CONFORMING TO THE CONFIGURATION OF SAID LENS; IMMERSING THE SUPPORTED MIXTURE IN A LIQUID BATH AND GRADUALLY RAISING THE TEMPERATURE OF THE LIQUID FROM APPROXIMATELY 100*F. TO ABOUT 150*F. WITHIN A PERIOD OF APPROXIMATELY 11 HOURS AND MAINTAINING THE TEMPERATURE AT APPROXIMATELY 150*F. FOR ABOUT 5 HOURS TO POLYMERIZE SAID AMOUNT OF THE MIXTURE; REMOVING THE POLYMERIZED MATERIAL FROM SAID LIQUID; SUBJECTING THE LENS PRESENTING POLYMERIZEDD MATERIAL TO AN ATMOSPHERE OF A HEATED GAS HAVING A TEMPERATURE WITHIN THE RANGE OF APPROXIMATELY 235*F. TO ABOUT 245*F. AND WHILE SAID OPPOSED MAJOR CURVED SURFACES OF THE POLYMERIZED MATERIAL ARE FREE FROM EXTERNAL SUPPORT; AND REMOVING THE POLYMERIZED LENS PRESENTING MATERIAL FROM SAID ATMOSPHERE UPON FINAL CURING AND HARDENING OF THE SAME.