Method for manufacturing preforms used in molding optical elemen

Details Method for manufacturing preforms used in molding optical elemen Method for manufacturing preforms used in molding optical elemen

1997-11-07

1999-12-28

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

264 24, 264 27, 264 71, 425808, B29D 1100

Patent

active

060077468

ABSTRACT:
A method for manufacturing preforms used in molding optical elements includes: (1) forming an array made from a material for optical elements, in which a plurality of preform portions used in molding optical elements are connected; (2) applying vibration to the outer peripheral part of the preform portion in the thickness direction of the array by a pair of punches; and then (3) punching the preform portions.

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