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:
Nov. 16, 2010
Filed:
Mar. 02, 2005
Takahisa Harayama, Kyoto, JP;
Takehiro Fukushima, Kyoto, JP;
Takahisa Harayama, Kyoto, JP;
Takehiro Fukushima, Kyoto, JP;
Abstract
A semiconductor laser gyro including a photodetector and a semiconductor laserthat emits first and second laser lights. The photodetector is disposed in a position where interference fringes are formed by the first and second laser lights. The semiconductor laserincludes an active layer as well as first and second electrodesandfor injecting carriers into the active layer. The first laser light is one obtained through emission of a part of laser light (L) that circulates on a polygonal path in the active layer. The second laser light is one obtained through emission of a part of laser light (L) that circulates on the polygonal path in the opposite direction to the laser light (L).