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:
Feb. 19, 2013
Filed:
May. 19, 2010
Ralf Mueller, Aalen, DE;
Toralf Gruner, Aalen-Hofen, DE;
Ralf Mueller, Aalen, DE;
Toralf Gruner, Aalen-Hofen, DE;
Carl Zeiss SMT GmbH, Oberkochen, DE;
Abstract
The disclosure provides an optical system having an optical axis, where the optical system includes a polarization manipulator which includes first and second subelements. The first subelement has a non-planar, optically effective surface. For light passing through the first subelement, the first subelement causes a change in the polarization state. A maximum effective retardation introduced by the first subelement along the optical axis is less than a quarter of the working wavelength of the optical system. The first subelement and the second subelement have mutually facing surfaces which are mutually complementary. The optical system also includes a position manipulator to manipulate the relative position of the first and second subelements.