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. 19, 2016
Filed:
Dec. 17, 2013
Carl Zeiss Smt Gmbh, Oberkochen, DE;
Damian Fiolka, Oberkochen, DE;
Markus Deguenther, Aalen, DE;
Carl Zeiss SMT GmbH, Oberkochen, DE;
Abstract
Methods of producing a polarization-modulating element that modulates a polarization state of incident light into a predetermined polarization state, the polarization-modulating element being used with an illumination optical apparatus, include preparing an optical material having optical activity, and providing the optical material with a circumferentially varying thickness profile and a central region that is an aperture having no optical activity. The thickness profile is set so that light in a linearly polarized state having a direction of polarization substantially along a single direction, is transformed into light in an azimuthal polarization state having a direction of polarization substantially along a circumferential direction or into light in a radially polarized state having a direction of polarization substantially along the radial direction.