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:
Oct. 26, 2010
Filed:
Feb. 25, 2009
Nobuyoshi Yamagishi, Yokohama, JP;
Shigehiro Masuji, Yokohama, JP;
Naoto Hirohata, Yokohama, JP;
Masahiko Sugiyama, Yokohama, JP;
Nobuyoshi Yamagishi, Yokohama, JP;
Shigehiro Masuji, Yokohama, JP;
Naoto Hirohata, Yokohama, JP;
Masahiko Sugiyama, Yokohama, JP;
Victor Company of Japan, Ltd., Kanagawa-Ken, JP;
Abstract
An optical unit for use in a backlight device of a liquid crystal display apparatus, has a first light-collecting and -diffusing optical component, a light-collecting optical component, and a second light-collecting and -diffusing optical component, provided in this order on the optical path of light emitted from a light source. Each light-collecting and -diffusing optical component has a surface provided on which are a plurality of microlenses each having a shape of a hemisphere- or semi-oval-like protrusion, with light collecting and diffusing functions. The light-collecting optical component has a surface provided on which are a plurality of prisms each having a saw-teeth like section, with a light collecting function. Each surface is provided on a light-emitting side of the optical unit.