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. 07, 2013
Filed:
Dec. 12, 2008
Isao Matsubara, Tucson, AZ (US);
Isao Matsubara, Tucson, AZ (US);
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A present invention provides a computer generated hologram which forms a light intensity distribution on a predetermined plane by giving a phase distribution to a wavefront of incident light, the hologram including a first anisotropic cell and second anisotropic cell configured to change a polarization state of the incident light, and a first isotropic cell and second isotropic cell configured not to change the polarization state of the incident light, wherein a direction of an optic axis of the first anisotropic cell is different from a direction of an optic axis of the second anisotropic cell, and a thickness of the first isotropic cell is different from a thickness of the second isotropic cell.