Stock material or miscellaneous articles – Composite – Of silicon containing
Reexamination Certificate
2005-09-06
2005-09-06
Robertson, Jeffrey B. (Department: 1712)
Stock material or miscellaneous articles
Composite
Of silicon containing
C428S413000, C428S421000, C428S446000, C427S387000
Reexamination Certificate
active
06939613
ABSTRACT:
An optical member having improved durability characteristics and a process of producing an optical member are provided. The optical member has an antireflection film on a substrate, wherein an outermost layer of the antireflection film is a layer containing, as a major component, vapor deposited silicon dioxide. The outermost layer is further externally provided with a fluorine-containing water-repellent layer. The optical member has the following characteristics: (1) after the water-repellent layer is initially provided, a stationary contact angle (stationary contact angle before rubbing) to water is 104° or more; and (2) after a chamois skin is dipped in water at 25° C. for 5 minutes, and the surface of the water-repellent layer is then rubbed 10,000 times by the chamois skin while applying a load of 500 g, a stationary contact angle (stationary contact angle after rubbing) is from 0 to 10° smaller than the stationary contact angle before rubbing.
REFERENCES:
patent: 5576885 (1996-11-01), Lowe et al.
patent: 5909314 (1999-06-01), Oka et al.
patent: 6235833 (2001-05-01), Akamatsu et al.
patent: 6318842 (2001-11-01), Shimomura et al.
patent: 6511753 (2003-01-01), Teranishi et al.
patent: 6660392 (2003-12-01), Yamaguchi et al.
patent: 2002/0192472 (2002-12-01), Metz et al.
patent: 2004/0021966 (2004-02-01), Takahashi et al.
patent: 1 112 981 (2001-07-01), None
patent: 50-006615 (1975-01-01), None
patent: 58-122979 (1983-07-01), None
patent: 58-172242 (1983-10-01), None
patent: 58-172246 (1983-10-01), None
patent: 60-040254 (1985-03-01), None
patent: 60-221470 (1985-11-01), None
patent: 61-130902 (1986-06-01), None
patent: 62-148902 (1987-07-01), None
patent: 05-215905 (1993-08-01), None
patent: 09-157582 (1997-06-01), None
patent: 09-202648 (1997-08-01), None
patent: 09-263728 (1997-10-01), None
patent: 10-130844 (1998-05-01), None
patent: 11-320743 (2001-07-01), None
patent: 2000/66353 (2000-11-01), None
English Translation of JP 05-215905 from JPO website, Kono, Aug. 1993.
English Translation of JP 2003-014904 from JPO website, Kono, Jan. 2003.
Matsumoto Masakazu
Takahashi Yukihiro
Finnegan Henderson Farabow Garrett & Dunner LLP
HOYA Corporation
Robertson Jeffrey B.
LandOfFree
Optical member, process of producing optical member, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical member, process of producing optical member, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical member, process of producing optical member, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3383331