The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2003
Filed:
Apr. 27, 2001
Applicant:
Inventors:
Rolf Martin, Jena, DE;
Andreas Menzel, Jena, DE;
Frank Coriand, Jena, DE;
Wolfgang Schmidt, Jena, DE;
Assignee:
Schott Glass, Mainz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 2/304 ;
U.S. Cl.
CPC ...
C03B 2/304 ;
Abstract
A method produces homogenous quartz glass plates without streaks. The method is applied to starting quartz glass body which has an X—X geometrical axis and good refractive index homogeneity in its central area, and a refractive index homogeneity decreasing as the axis lies further from a central area. The body is divided into at least two concave parts by longitudinal cuts parallel to the axis once the central area has been processed out of the body. The parts are placed separately in corresponding molds and heated therein such that they are molded to form quartz glass plates having a desired thickness.