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. 29, 2010
Filed:
Jul. 08, 2008
Katsumi Kobinata, Tokyo, JP;
Katsuya Mochizuki, Tokyo, JP;
Toshiyuki Kondo, Tokyo, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
A compact lighting fixture having various functions can be achieved at low cost. The lighting fixture can provide a high degree of freedom for space utilization, can provide a comfortable illumination space with designed light distribution, can be configured to require a smaller space for installation, and can have an appearance that is not so different from its surroundings. As a component constituting the illumination optical system, a polygonal frustum portion can be located at a center and can have tapered side reflecting portions. When assuming that three concentric imaginary circles have respective radii of R, Rand R(R<R<R) and a center positioned at a center axis of the frustum portion, individual lens portions can be located at respective intersections where the imaginary circle having the radius of Rand lines extending radially from the center at regular center angles of α intersect. Light-incident lenses can be located at respective intersections where the imaginary circle having the radius of Rand bisectors of the center angles of α intersect. LEDs can be located at respective intersections where the imaginary circle having the radius of Rand lines connecting the center and positions of the light-incident lenses intersect.