METHOD OF FORMING VARIABLE FOCUS EYEWEAR

摘要

A method of forming a support member to a flexible membrane is provided by the present disclosure. In one form, the method includes placing the flexible membrane onto an outer periphery of a fixed tool, translating a movable tool towards the fixed tool, and engaging the flexible membrane such that the flexible membrane is deformed and placed into tension. A molten resin is then injected into a support ring molding cavity, and the resin is allowed to cool such that the support ring is secured to the tensioned flexible membrane. The movable tool is then translated away from the fixed tool to eject a flexible membrane and support ring assembly.

主权项

1. A method of forming a support member to a flexible membrane comprising:
placing the flexible membrane onto an outer periphery of a fixed tool, the fixed tool defining a central recess; translating a movable tool towards the fixed tool and engaging the flexible membrane proximate the outer periphery of the fixed tool with at least one spring-loaded member, the movable tool defining a central protrusion and a support ring molding cavity disposed within the central protrusion; continuing to translate the movable tool towards the fixed tool such that the central protrusion of the movable tool progressively engages the flexible membrane and the flexible membrane is deformed into the central recess of the fixed tool and placed into tension; injecting a molten resin into the support ring molding cavity while the flexible membrane is held in tension; allowing the resin to cool such that the support ring is secured to the tensioned flexible membrane, the support ring defining a radiused transition adjacent the flexible membrane that reduces the stresses at the boundary between the support ring and the flexible membrane; and translating the movable tool away from the fixed tool to eject a flexible membrane and support ring assembly.