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:
Jun. 16, 2015
Filed:
Jan. 28, 2014
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Mitsuyoshi Kobayashi, Tokyo, JP;
Risako Ueno, Tokyo, JP;
Kazuhiro Suzuki, Tokyo, JP;
Hiroto Honda, Yokohama, JP;
Honam Kwon, Kawasaki, JP;
Hideyuki Funaki, Tokyo, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
A microlens array unit according to an embodiment includes: a substrate; a first group of microlenses including first microlenses having a convex shape and a first focal length, the first group of microlenses being arranged on the substrate; and a second group of microlenses including second microlenses having a convex shape and a second focal length different from the first focal length, the second group of microlenses being arranged on the substrate, a first imaging plane of the first group of microlenses and a second imaging plane of the second group of microlenses being parallel to each other, a distance between the first and second imaging planes in a direction perpendicular to the first imaging plane being 20% or less of the first focal length, and images of the first microlenses projected on the substrate not overlapping images of the second microlenses projected on the substrate.