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:
May. 19, 2015
Filed:
Jan. 08, 2014
Carl Zeiss Smt Gmbh, Oberkochen, DE;
Eric Eva, Aalen, DE;
Carl Zeiss SMT GmbH, Oberkochen, DE;
Abstract
A method for determining the absorption of a blank () for producing an optical element (), including: radiating a heating light ray () through the blank () for the purpose of heating the blank (), and determining the absorption in the blank () by measuring at least one property of a measurement light ray () influenced by the heating of the blank (). In the method, either the heating light ray () and the measurement light ray () or the heating light ray and a further heating light ray are oriented to enter into the blank () through a first polished surface () or a second polished surface (), situated opposite the first surface, and meet one another exclusively in the interior of the blank (), preferably in a volume () used for the production of the optical element (). An associated measuring apparatus (), optical element (), and optical arrangement are also disclosed.