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. 26, 2010
Filed:
Apr. 24, 2006
Daisuke Matsubara, Tokyo, JP;
Masahisa Shinoda, Tokyo, JP;
Daisuke Matsubara, Tokyo, JP;
Masahisa Shinoda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A laser emitting device () includes a light emitting portion () that emits light of a wavelength λ(approximately 405 nm), a light emitting portion () that emits light of a wavelength λ(approximately 650 nm), and a light emitting portion () that emits light of a wavelength λ(approximately 780 nm). The light emitting position of the light emitting portion () and the light emitting position of the light emitting portion () are approximately on the same position as seen in the direction of an optical axis of emitted light of the laser emitting device (). An optical axis adjusting element () is provided for adjusting an optical axis of return light of at least one of the wavelengths among return lights of the wavelengths λand λso that respective return lights emitted by the light emitting portions (and) of the laser emitting device () and reflected by an optical recording medium () are received by a common light detector ().