Single-crystal – oriented-crystal – and epitaxy growth processes; – Inorganic containing single-crystal (e.g. – compound – mixture – co – Halide containing (e.g. – fluorphlogopite – fluor-mica) {c30b 29/1
Reexamination Certificate
2006-01-24
2006-01-24
Nguyen, N. M. (Department: 1754)
Single-crystal, oriented-crystal, and epitaxy growth processes;
Inorganic containing single-crystal (e.g., compound, mixture, co
Halide containing (e.g., fluorphlogopite, fluor-mica) {c30b 29/1
C117S937000, C423S489000, C423S490000
Reexamination Certificate
active
06989060
ABSTRACT:
A calcium fluoride crystal produced in accordance with a method for producing calcium fluoride crystal on the basis of refining a raw material of calcium fluoride and causing crystal growth of the refined calcium fluoride, the method including a process of raising a purity of the calcium fluoride to complement the refining, wherein a transition density in crystal is not greater than 1×105/cm2, and that dispersion of transition density inside an effective portion in crystal is in a range of ±5×104/cm2. Also disclosed is an optical element to be manufactured by use of such CaF2 crystal.
REFERENCES:
patent: 6123764 (2000-09-01), Mizugaki et al.
patent: 6238479 (2001-05-01), Oba
patent: 6270570 (2001-08-01), Ohba et al.
patent: 6342312 (2002-01-01), Oba et al.
patent: 6377332 (2002-04-01), Sakuma et al.
patent: 6630117 (2003-10-01), Sparrow
patent: 2001/0025598 (2001-10-01), Staeblein et al.
patent: 2003/0158028 (2003-08-01), Loiacono et al.
patent: 0 869 203 (1998-10-01), None
patent: 0 875 778 (1998-11-01), None
patent: 0 919 646 (1999-06-01), None
patent: 0 995 820 (2000-04-01), None
Mouchovski, et al.,Growth of Ultra-Violet Grade CaF2Crystals and their Application for Excimer Laser Optics, Apr. 1, 1996, XP000627179.
Patent Abstracts of Japan, Publication No. 09 315815, Publication date Dec. 9, 1997.
Patent Abstracts of Japan, Publication No. 10 279378, Publication date Oct. 20, 1998.
Patent Abstracts of Japan, Publication No. 2001-019586, Publication date Jan. 23, 2001.
European Search Report, Jun. 7, 2002.
Morgan&Finnegan LLP
Nguyen N. M.
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