Methods and apparatus useful in manufacturing lenses

摘要

Methods of manufacturing a contact lens are provided. Such methods include using an adjustable mandrel to fixedly retain a single mold section carrying a polymerized contact lens product and delensing the contact lens product from the single mold section. Adjustable mandrels are also provided.

主权项

1. A method of manufacturing a contact lens comprising:
providing a polymerized contact lens product on a single mold section, the single mold section comprising a mandrel engagement surface; placing the single mold section in contact with an adjustable mandrel, the adjustable mandrel comprising a plurality of pivotable clutches and a mold section engagement member; adjusting the positions of the plurality of pivotable clutches, thereby adjusting the diameter of the mold section engagement member of the mandrel such that the mandrel engagement surface of the single mold section and the mold section engagement member of the adjustable mandrel interact to fixedly retain the single mold section on the adjustable mandrel; and delensing the contact lens product from the single mold section to separate the contact lens product from the single mold section.