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. 13, 2004
Filed:
Jan. 15, 2003
Yoshifumi Yabuki, Miyagi, JP;
Tsuyoshi Tojo, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed is an array type semiconductor laser device including a plurality of semiconductor laser chips each of which has an active layer for forming a light emitting point, wherein the semiconductor laser chips are arrayed on the same substrate in such a manner as to be spaced from each other at intervals. In this laser device, an array configuration of the semiconductor laser chips is specified such that a gap between arbitrary adjacent two laser chips located inwardly from both outermost laser chips positioned at both the edges of the semiconductor laser device is wider than a gap between each of said outermost laser chips and an LD chip adjacent thereto. This laser device is advantageous in reducing the effect of thermal interference mutually exerted on the laser chips, thereby ensuring a thermal uniformity over the entire laser chips.