Title:
VENTED OPTIC POWER INSERT BUSHINGS AND RELATED SYSTEMS AND METHODS FOR PRODUCING OPHTHALMIC LENS MOLDS AND MOLDED OPHTHALMIC LENSES
Document Type and Number:
WIPO Patent Application WO2008014211
Kind Code:
B1
Abstract:
Devices, systems, and methods for producing ophthalmic lens molds and molded ophthalmic lenses are described. The present devices, systems, and methods provide venting of gases produced during injection molding of ophthalmic lens molds. An optic power insert bushing is described and includes a venting system that directs gas from a first end of the bushing toward a second end of the bushing. The gas is directed between an optic power insert and an inner sidewall surface of a bushing bore in which the optic power insert is located. The bushing or bushings, and optic power inserts, can be provided as components of an ophthalmic lens mold injection system. Methods of making and using the vented bushings are also described.
Inventors:
EDWARDS DAVID (GB)
Application Number:
PCT/US2007/074124
Publication Date:
May 29, 2008
Filing Date:
July 23, 2007
Export Citation:
Assignee:
COOPERVISION INC (US)
COOPERVISION INT HOLDING CO LP (BB)
EDWARDS DAVID (GB)
COOPERVISION INT HOLDING CO LP (BB)
EDWARDS DAVID (GB)
International Classes:
B29C33/40
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