|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||264/2.2 ; 264/328.7 ; 425/808|
|발명자 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 58 인용 특허 : 0|
A method and apparatus for injection molding thermoplastic lenses, such as prescription eyeglass lenses, in a single injection molding operation into a finished single vision or multifocal blank which does not require additional molding or polishing. Movable optical inserts (dies) are forced apart by injected polycarbonate, then the inserts are urged together forcing a portion of the injected polycarbonate into a pocket.