Method of applying scratch-resistant coatings to plastic ophthal

Details Method of applying scratch-resistant coatings to plastic ophthal Method of applying scratch-resistant coatings to plastic ophthal

1991-05-20

1992-11-17

Jones, W. Gary

Coating processes

Optical element produced

Transparent base

118641, 264 17, B29D 1100

Patent

active

051642280

ABSTRACT:
Plastic ophthalmic lenses are coated with a scratch-resistant coating using a spin coating process. The lenses are separated from lens mold pieces, and the lenses are routed through a coating system where the lens coating is applied. A conveyor moves the lens mold pieces toward an inspection station while the corresponding lenses are moving through the coating system. The operation of the lens coating system and the conveyor are coordinated so that the coated lens and the lens mold pieces from which that lens was made are delivered as a group to the inspection station.

REFERENCES:
patent: 4155962 (1979-05-01), Neefe
patent: 4919850 (1990-04-01), Blum et al.

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