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:
Sep. 25, 2012
Filed:
Oct. 28, 2010
Applicants:
Ryuta Koizumi, Shiojiri, JP;
Yujiro Nomura, Shiojiri, JP;
Takeshi Sowa, Matsumoto, JP;
Inventors:
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/10 (2006.01); G03G 15/04 (2006.01); B41J 15/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
An exposure head, includes: a lens array that includes lenses that are arranged in a first direction and in a second direction orthogonal to the first direction; and a light emitting element substrate that is provided with light emitting elements that emit lights to be imaged by the lenses, wherein a relationship defined by a following formula: 1<L/Lis satisfied, where the symbol Ldenotes a length of the lens in the first direction and the symbol Ldenotes a length of the lens in the second direction.