Optical lens base with protective film and process for producing optical lens base

Patent 7660051 Issued on February 9, 2010. Estimated Expiration Date:

September 30, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Hoya Corporation

Application

No. 10577592 filed on 09/30/2004

US Classes:

359/796Single component with multiple elements

Examiners

Primary: Mack, Ricky L
Assistant: Greece, James R

Attorney, Agent or Firm

Blakely, SokoLoff, Taylor & Zafman

Foreign Patent References

9200513 DE 03/01/1992
51120490 JP 10/01/1976
52-057592 JP 05/01/1977
55121028 JP 09/01/1980
2-1867 JP 01/01/1990
02-001867 JP 01/01/1990
06-024852 JP 04/01/1994
06-347611 JP 12/01/1994
07-156052 JP 06/01/1995
09-225798 JP 09/01/1997
2001-232542 JP 08/01/2001
2001232542 JP 08/01/2001
2003-053646 JP 02/01/2003

International Classes

G02B 9/00
G02B 7/02
B29D 11/00

Abstract

A protective film (10) is eccentrically adhered to a concave-side transfer surface (3b) of a first mold (3) which is used in a plastic lens forming mold, and part (10a) of the peripheral portion of the protective film is projected laterally from the mold (3). The protective film (10) comprises a film layer with an outer diameter smaller than that of the first mold (3), and an adhesive layer with a relatively low adhesive strength which is formed on one surface of the film layer.