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. 19, 2015
Filed:
Mar. 30, 2012
Applicant:
Manabu Hakko, Utsunomiya, JP;
Inventor:
Manabu Hakko, Utsunomiya, JP;
Assignee:
CANON KABUSHIKI KAISHA, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 40/14 (2006.01); G02B 3/00 (2006.01); H01L 27/146 (2006.01); H01L 31/0216 (2014.01);
U.S. Cl.
CPC ...
G02B 3/0043 (2013.01); G02B 3/0056 (2013.01); H01L 27/14629 (2013.01); H01L 31/02161 (2013.01);
Abstract
An optical element includes a refractive index pattern that is periodically formed by a plurality of media having refractive indices different from each other. The highest diffraction order for a light beam of a first wavelength region that enters the optical element is greater than the highest diffraction order for a light beam of a second wavelength region that is longer than the first wavelength region, and the light beams of the first wavelength region and the second wavelength region are emitted so that each of the light beams of the first wavelength region and the second wavelength region is periodically localized.