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:
Jan. 04, 2005
Filed:
Jul. 17, 2002
Kazuo Shibuya, Chiba, JP;
Kenji Takase, Tokyo, JP;
Tsuguaki Shibata, Miyagi, JP;
Shigeru Shinzawa, Tokyo, JP;
Tamiaki Matsuura, Kanagawa, JP;
Hidekuni Aizawa, Kanagawa, JP;
Keigo Suzuki, Fukushima, JP;
Hideo Ohata, Saitama, JP;
Kazuo Shibuya, Chiba, JP;
Kenji Takase, Tokyo, JP;
Tsuguaki Shibata, Miyagi, JP;
Shigeru Shinzawa, Tokyo, JP;
Tamiaki Matsuura, Kanagawa, JP;
Hidekuni Aizawa, Kanagawa, JP;
Keigo Suzuki, Fukushima, JP;
Hideo Ohata, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention provides a laser module that can maintain weldability of a lens holder and improve machinability, and it protects a burr from being induced, and thereby improves optical accuracy, improves a reading accuracy of a bar code, improves mass productivity and reduces a manufacturing cost. In a laser module for a bar code reader, which has a packaged structure including a light emitting element and a light projection lens, for collecting a beam emitted from the light emitting element through the light projection lens and irradiating to an irradiation target, it includes: a cylindrical housing, in which the light emitting element is engaged with one end side; and a cylindrical lens holder, which is engaged with the other end side of the housing, for holding therein the light projection lens. Then, the lens holder is provided with: an inner cylinder, which is made of a metal having good machinability, for holding therein the light projection lens; and an outer cylinder engaged with a periphery of the inner cylinder and integrated with the inner cylinder, whose outer circumference is made of a metal having good weldability to be welded to the housing.