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. 29, 2012
Filed:
Jun. 09, 2009
Isao Matsubara, Tucson, AZ (US);
Isao Matsubara, Tucson, AZ (US);
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A computer generated hologram includes a plurality of cells which form a light intensity distribution on a predetermined plane. The plurality of cells includes a plurality of first cells including isotropic media and anisotropic media, and a plurality of second cells including anisotropic media alone. The plurality of cells change a phase of incident light which impinges on each of the plurality of cells to form a phase distribution including N phases (N is the number of phases, N≧2) for each of a wavefront of a linearly polarized light component in a first direction and a wavefront of a linearly polarized light component in a second direction perpendicular to the first direction.