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:
Oct. 19, 2010
Filed:
Aug. 31, 2005
Masayuki Hata, Kadoma, JP;
Yasuyuki Bessho, Uji, JP;
Yasuhiko Nomura, Moriguchi, JP;
Masayuki Shono, Hirakata, JP;
Masayuki Hata, Kadoma, JP;
Yasuyuki Bessho, Uji, JP;
Yasuhiko Nomura, Moriguchi, JP;
Masayuki Shono, Hirakata, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A one-chip semiconductor laser device for use in a semiconductor laser apparatus has a structure in which a red semiconductor laser device and an infrared semiconductor laser device are stacked on a blue-violet semiconductor laser device. The blue-violet semiconductor laser device is manufactured by forming semiconductor layers on a GaN substrate. Each of the red semiconductor laser device and the infrared semiconductor laser device is manufactured by forming semiconductor layers on a GaAs substrate. The modulus of elasticity of GaAs is smaller than the modulus of elasticity of GaN. The length of each of the red semiconductor laser device and the infrared semiconductor laser device is longer than the length of the blue-violet semiconductor laser device.