Back to results
US 8,408,698 B2Granted
Laminated composite lens
AssigneeVicoh, LLC
InventorJerome A. Legerton
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a composite lens, comprising an anterior rigid gas permeable layer, and an annulus of soft material bonded to a posterior surface of the anterior rigid gas permeable layer, wherein a central zone of the composite lens is rigid and without a soft layer, wherein a peripheral zone of the composite lens is generally rigid in its anterior aspect and soft in its posterior aspect.
Claims6
A composite button for manufacturing a composite lens, the button comprising:
- a rigid lens material formed by casting;
- an annulus of soft lens material on an ocular surface of the rigid material;
- wherein the soft lens material is bonded to the rigid lens material;
- and
- wherein the soft lens material transitions anterior-ward to the rigid lens material at a preselected chord diameter where the edge of the composite lens is to be formed.
2 more elements
Dependencies are inferred from the claim text.