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. 16, 2013
Filed:
Jun. 15, 2011
Hideki Nakata, Kyoto, JP;
Hidenori Wada, Kyoto, JP;
Hideki Nakata, Kyoto, JP;
Hidenori Wada, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided are an optical head and an optical information device capable of inhibiting the temperature rise of a photodetector. An optical head () includes a semiconductor laser () which emits a luminous flux, an objective lens () which focuses the luminous flux emitted from the semiconductor laser () on the optical disk (), and a photodetector () which detects the luminous flux reflected by the optical disk (). The photodetector () includes a light receiving part () which receives the luminous flux reflected by the optical disk (), a package () which covers the light receiving part (), and a heat transfer adhesion layer () disposed between the package () and the light receiving part (). The heat transfer adhesion layer () is formed in a region that is on the light receiving part () and includes a light path through which the luminous flux reflected by the optical disk () passes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile