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. 26, 2026
Filed:
Jul. 19, 2021
Nitto Denko Corporation, Osaka, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
An angle at which an intensity becomes maximum in a light distribution of light emitted from a center of a light emitting surface of a surface illumination device is in a range of −90° or more to less than 0° in a plane including a vertical axis and perpendicular to the light emitting surface, in a case where an axis passing through the center of the light emitting surface and perpendicular to the floor surface is defined as the vertical axis, and in the plane, a direction extending from the center of the light emitting surface toward the floor surface is defined as −90°, a direction extending from the center of the light emitting surface toward a side opposite to the floor surface is defined as +90°, and a direction orthogonal to the light emitting surface is defined as vertical 0°.