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:
Aug. 15, 2006
Filed:
Jul. 07, 2004
Bernd Kleemann, Aalen, DE;
Stefan Weissenrieder, Elchingen, DE;
Jeffrey Erxmeyer, Oberkochen, DE;
Ralf Kuschnereit, Oberkochen, DE;
Bernd Kleemann, Aalen, DE;
Stefan Weissenrieder, Elchingen, DE;
Jeffrey Erxmeyer, Oberkochen, DE;
Ralf Kuschnereit, Oberkochen, DE;
Carl Zeiss Laser Optics GmbH, Oberkochen, DE;
Abstract
An optical grating has a multiplicity of parallel diffraction structures, which are arranged on a support defining a base face. Each structure has a blaze flank that is inclined substantially at the Littrow angle with respect to the base face, and a back flank. Both flanks together form a reflection layer which comprises a reflective base layer and a transparent protective layer that is connected to the base layer and covers it. The protective layer on the blaze flank and the protective layer on the back flank are made of the same material. The thicknesses of the protective layers on the blaze flank and on the back flank, however, are different.