Method of molding optical elements

Details Method of molding optical elements Method of molding optical elements

1992-04-27

1993-11-23

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

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

222 1, 264 17, B29C 3508, B29D 1100

Patent

active

052641600

ABSTRACT:
A method of molding an optical element in which a required amount of a resin material can be accurately supplied without air bubbles becoming entrapped in the resin material when it is supplied. The method includes a first step of making a tip of resin material supply means approach a molding surface until the tip is a predetermined distance away from the molding surface, a second step of discharging a predetermined amount of the resin material from the tip of the supply means while the tip of the supply means is the predetermined distance away from the molding surface, and a third step of discharging the resin material from the tip at a predetermined discharge rate, until a required amount of the resin has been supplied, while the tip of the supply means is moved in a direction away from the molding surface as the lower end of the resin material discharged from the tip is maintained in contact with the molding surface.

REFERENCES:
patent: 4432832 (1984-02-01), Fantone
patent: 4756972 (1988-07-01), Kloosterboer et al.
patent: 5102599 (1992-04-01), Shults

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