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. 15, 2013
Filed:
May. 17, 2010
Masashi Yokota, Osaka, JP;
Masashi Yokota, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
It is an object of the present invention to provide a lighting device realizing improvement in brightness of an intended area such as a center area of an irradiation surface. A lighting deviceof the present invention includes a light source, a chassishousing the light source, and an optical memberfacing the light source. The optical memberhas a light source overlapping portion DA overlapping with a light source arrangement area LA where the light sourceis arranged, on the chassis, and a light source non-overlapping portion DN overlapping with a light source non-arrangement area LN where the light sourceis not arranged. The light source overlapping portion DA has a surface facing the light source, the surface having a light reflectance greater than that of the light source non-overlapping portion DN. The light source overlapping portion DA includes a low light reflectance area LR having a surface facing the light source, the surface having a light reflectance smaller than that of a surrounding area in the light source overlapping portion DA.