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:
Feb. 18, 2003
Filed:
Dec. 04, 2000
Katsushige Yanagisawa, Nagano, JP;
Tohru Hotta, Nagano, JP;
Ikuo Kasuga, Nagano, JP;
Toshihiko Okina, Nagano, JP;
Satoru Kishita, Tokyo, JP;
Hidenori Sai, Tokyo, JP;
Other;
Abstract
An optical pick-up device ( ) includes a laser diode ( ) for recording which acts as a fixation side light source attached to an attachment portion ( ) of a device frame ( ) and has a great calorific value, and a laser diode ( ) for reproduction which acts as an adjustment side light source held in a holder ( ) fixed with an adhesive ( ) in a clearance ( ) provided on a side surface ( ) of the device frame. Heat generated from the laser diode ( ) for recording is radiated efficiently through the device frame ( ), and heat generated from the laser diode ( ) is also radiated efficiently through the holder ( ) fixed with the adhesive ( ) which is partially filled for the device frame ( ) with the clearance ( ) formed.