Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Reshaping or treatment of an optical preform
Reexamination Certificate
2011-04-12
2011-04-12
Del Sole, Joseph S (Department: 1743)
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Reshaping or treatment of an optical preform
C264S001320, C264S001700, C264S002500, C264S002600, C427S162000, C427S164000
Reexamination Certificate
active
07922942
ABSTRACT:
A method and apparatus for coating lenses within an injection molding machine having a concave optical insert with a perimeter edge that meets the receiver ring in an annular contact region. A channel is formed throughout the annular contact region. When molding a lens with the apparatus, and according to the method, a closed-loop coating containment lip is formed by the channel. After the lens has solidified and the mold is opened, a predetermined volume of coating solution is applied and the mold is re-clamped. A uniformly thin layer of coating is cured on to the convex lens surface by avoiding coating run off and preventing mold contamination.
REFERENCES:
patent: 4251474 (1981-02-01), Blandin
patent: 5067800 (1991-11-01), Shirakawa
patent: 5674283 (1997-10-01), Stoy
patent: 6733701 (2004-05-01), Gross et al.
patent: 7028974 (2006-04-01), Chiba
patent: 2004/0099971 (2004-05-01), Su et al.
patent: 07017729 (1995-01-01), None
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English Abstract and English machine translation of JP 07017729, retrieved Jul. 26, 2010 from JPO database.
Examiner D. Bibollett-Ruche; International search Report; Mar. 19, 2010; European Patent Office, Rijswijk; 9 pages.
Chiu Hao-Wen
Houle Wilfred
Lockwood Matthew
Del Sole Joseph S
Essilor International "Compagnie Generale d'Optique"
Kennedy Timothy
Keusey & Associates, P.C.
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