Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Reexamination Certificate
2007-12-25
2007-12-25
Green, Anthony J. (Department: 1793)
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
C501S053000, C065S017100, C065S017200, C065S030100, C065S384000, C065S397000, C065S424000
Reexamination Certificate
active
10548237
ABSTRACT:
The present invention provides an optical synthetic quartz glass material which substantially does not cause changes in transmitted wave surface (TWS) by solarization, compaction (TWS delayed), rarefaction (TWS progressed) and photorefractive effect when ArF excimer laser irradiation is applied at a low energy density, e.g. at energy density per pulse of 0.3 mJ/cm2or less. The present invention further provides a method for manufacturing the same. In order to solve the above-mentioned problems, the optical synthetic quartz glass material of the present invention is characterized in that, in a synthetic quartz glass prepared by a flame hydrolysis method using a silicon compound as a material, the followings are satisfied that the amount of SiOH is within a range of more than 10 ppm by weight to 400 ppm by weight, content of fluorine is 30 to 1000 ppm by weight, content of hydrogen is 0.1×1017to 10×1017molecules/cm3and, when the amounts of SiOH and fluorine are A and B, respectively, total amount of A and B is 100 ppm by weight or more and B/A is 0.25 to 25.
REFERENCES:
patent: 5326729 (1994-07-01), Yaba et al.
patent: 6333284 (2001-12-01), Otsuka et al.
patent: 6451719 (2002-09-01), Yamagata
patent: 1094040 (2001-04-01), None
patent: 01-028240 (1989-01-01), None
patent: 02-069332 (1990-03-01), None
patent: 11-116248 (1999-04-01), None
patent: 11-302025 (1999-11-01), None
patent: 2000-026125 (2000-01-01), None
patent: 2000-143252 (2000-05-01), None
patent: 2000-191331 (2000-07-01), None
patent: 2000-264671 (2000-09-01), None
patent: 2001-019450 (2001-01-01), None
patent: 2001-114529 (2001-04-01), None
Patent Abstracts of Japan, vol. 2000, No. 12, Jan. 3, 2001, for JP 2000 264671 A (Sep. 26, 2000).
Patent Abstracts of Japan, vol. 2000, No. 02, Feb. 29, 2000, for JP 11 302025 A (Nov. 2, 1999).
Patent Abstracts of Japan, vol. 2000, No. 04, Aug. 31, 2000, for JP 2000 026125 A (Jan. 25, 2000).
Patent Abstracts of Japan, vol. 2000, No. 10, Nov. 17, 2000, for JP 2000 191331 A (Jul. 11, 2000).
Patent Abstracts of Japan, vol. 013, No. 211 (C-597), May 17, 1989, for JP 01 028240 A (Jan. 30, 1989).
Patent Abstracts of Japan, vol. 2000, No. 16, May 8, 2001, for JP 2001 019450 A (Jan. 23, 2001).
Patent Abstracts of Japan, vol. 2000, No. 08, Oct. 6, 2000, for JP 2000 143252 A (May 23, 2000).
Patent Abstracts of Japan, vol. 1999, No. 09, Jul. 30, 1999, for JP 11 116248 A (Apr. 27, 1999).
Patent Abstracts of Japan, for JP 2001-114529 (Apr. 24, 2001).
Patent Abstracts of Japan, for JP 02-069332 (Mar. 8, 1990).
Khotimchenko, V.S. et al., “Determining the Content of Hydrogen Dissolved in Quartz Glass Using . . . ”, Zhurnal Prikladnoi Spektroskopii, vol. 46, No. 6, pp. 987-991, Jun. 1987.
Fujinoki Akira
Nishimura Hiroyuki
Green Anthony J.
Heraeus Quarzglas GmbH & Co. KG
Shin-Etsu Quartz Products Co. Ltd.
Tiajoloff & Kelly
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