Method of molding a plastic lens

Details Method of molding a plastic lens Method of molding a plastic lens

1991-10-11

1993-01-12

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 25, 264 405, B29D 1100

Patent

active

051788012

ABSTRACT:
A method of molding a plastic lens, in which: a pair of upper and lower molds are arranged to form a gap, corresponding to the thickness of the lens, therebetween; an adhesive tape is applied around the molds to define a cavity between the molds; and a plastic material is injected into the cavity. Optical axes of the molds are centered at respective positions of the molds. After the centering step, each of the molds is held with the centered optical axis. A height of each mold held is measured referring to a reference height. Displacements of the molds are determined on the basis of the measured heights of the molds and the reference height. The molds held are horizontally moved with the centered optical axes for axial alignment. The molds held are axially moved to form a predetermined mold gap between the molds on the basis of the determined displacements of the molds. Then, the adhesive tape is applied around the molds to define the cavity.

Affiliated with

Also associated with

Rating

Method of molding a plastic lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of molding a plastic lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of molding a plastic lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1217820