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:
Aug. 02, 2011
Filed:
Jun. 24, 2004
Kenjiro Hamanaka, Minato-ku, JP;
Takahiro Hashimoto, Minato-ku, JP;
Hideshi Nagata, Minato-ku, JP;
Seiji Ohno, Minato-ku, JP;
Isao Muraguchi, Minato-ku, JP;
Nobuyuki Komaba, Minato-ku, JP;
Kenjiro Hamanaka, Minato-ku, JP;
Takahiro Hashimoto, Minato-ku, JP;
Hideshi Nagata, Minato-ku, JP;
Seiji Ohno, Minato-ku, JP;
Isao Muraguchi, Minato-ku, JP;
Nobuyuki Komaba, Minato-ku, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A lens-attached light-emitting element having an improved optical availability efficiency includes a composite lens provided on an approximately U-shaped light-emitting area of the light emitting element array. Four spherical lenses are arranged in such a manner that each is centered in the neighborhood the an end of a respective one of three segments of a U-shaped polygonal line corresponding to positions where light emitted by the U-shaped light-emitting area is a maximum Three cylindrical lens are arranged between two of the spherical lens, respectively, each cylindrical lens having an axis parallel with each segment. These four spherical lenses and three cylindrical lenses together constitute the composite lens. The light-emitting element further comprises an antireflection film covering the light-emitting area, and the composite lens is formed on the surface of the antireflection film.