Abstract: A multi-layer thin film is provided preferably for use with photochromic lenses, wherein the thin film comprises a plurality of layers, preferably including dielectric layers, selected and arranged so as to reflect less than about 6 percent of the UVA rays in a range of about 315 to 400 nm, more preferably about 350 to 380 nm. The thin film preferably has an activation value greater than 25%.
Type:
Grant
Filed:
March 26, 2004
Date of Patent:
December 15, 2009
Assignee:
Intercast USA, Inc.
Inventors:
Graziano Marusi, Federico Menta, Paolo Baiocchi
Abstract: An optical element is disclosed comprising at least one transparent eye-protecting portion comprising a plastic material, preferably having a hardness within a range of about 40 Shore A to about 77 Shore D, as measured according to ASTM Standard D2240, and an elongation at break within a range of about 200% to about 700%, as measured according to ASTM Standard D638.
Type:
Grant
Filed:
April 8, 2004
Date of Patent:
March 21, 2006
Assignee:
Intercast USA, Inc.
Inventors:
Giuseppe Iori, Federico Menta, Paolo Baiocchi
Abstract: A plano-convex optical sheet having a positive power including: a substantially planar inner surface; opposed lateral edges, and a thickness s that is decreasing proceeding from a transversal central line passing through the geometric center of the optical sheet towards said opposed lateral edges along a portion of predetermined width w of the optical sheet, so as to define a convex outer surface having a curvature such that the optical sheet is capable of providing once bent a cylindrically shaped optically correct visor.
Type:
Grant
Filed:
November 18, 2003
Date of Patent:
May 17, 2005
Assignee:
Intercast USA, Inc.
Inventors:
Giuseppe Iori, Federico Menta, Matteo Lagasi, Gian Giuseppe Giani
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