Patent ID: 8308999

Claim:
A method for producing soft contact lenses from a polymerizable composition, the method comprising: providing a carrier carrying a plurality of contact lens mold assemblies each comprising a first mold section and a second mold section forming a contact lens shaped cavity therebetween, wherein each contact lens mold assembly contains a polymerizable composition comprising a hydrogel contact lens polymerizable composition in the contact lens shaped cavity; providing a chamber containing a UV light source comprising a plurality of UV lamps providing UV light to the chamber effective to facilitate polymerization of the polymerizable composition; exposing the contact lens mold assemblies in the carrier to the UV light in the chamber at conditions effective to polymerize the polymerizable composition and form a hydrogel contact lens; and during the step of exposing, using digital addressable lighting interface (DALI) protocol-based technology in performing (A) monitoring the plurality of UV lamps and identifying a UV lamp which fails to operate and (B) controlling the consistency of light intensity provided by the plurality of UV lamps.