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:
Apr. 21, 2009
Filed:
Mar. 28, 2005
Masayoshi Uehira, Toyohashi, JP;
Akihiko Matsumoto, Toyokawa, JP;
Katsushi Watanabe, Toyokawa, JP;
Toshiyuki Majima, Toyokawa, JP;
Masayoshi Uehira, Toyohashi, JP;
Akihiko Matsumoto, Toyokawa, JP;
Katsushi Watanabe, Toyokawa, JP;
Toshiyuki Majima, Toyokawa, JP;
Konica Minolta OPTO, Inc., Tokyo, JP;
Abstract
In the case where a lens unit where two ore more transparent resin lenses are combined is constituted, at least one transparent resin lens contains infrared absorbent. When the lens unit is assembled, an infrared laser is emitted to a joined portion between the transparent resin lens and the other transparent resin lens. As a result, the emitted infrared ray is absorbed by the infrared absorbent, so that the transparent resin lenses are welded to each other. An opaque lens barrel which holds the entire lens unit and the transparent resin lenses are joined by welding.