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:
Jul. 05, 2016
Filed:
Mar. 27, 2013
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Naofumi Maruyama, Kanagawa, JP;
Toshiaki Fukuda, Kanagawa, JP;
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Abstract
To provide a lateral light emitting device that can prevent coupling efficiency in a fused portion of a rod lens and a prism from being deteriorated, can set an outside diameter extremely small, and set the distance to a beam waist long. A lateral light emitting device includes an optical fiber, a rod lens, one end of which is fused to the end surface of the optical fiber, and a prismfused to the other end of the rod lens. The prism has a base shape obtained by cutting a part of the circumference of a cylinder and forming a flat emission surfaceparallel to an axial line. In a fused portion of the rod lens and the prism, the outside diameter of a fused end surface of the rod lens is equal to or smaller than the smallest diameter of a fused end surface of the prism. The fused end surface of the rod lens does not protrude from the fused end surface of the prism. A center Oof the fused end surface of the rod lens and a center Oof a circular arc of the fused end surface of the prism are offset.